plateform stringclasses 1
value | repo_name stringlengths 13 113 | name stringlengths 3 74 | ext stringclasses 1
value | path stringlengths 12 229 | size int64 23 843k | source_encoding stringclasses 9
values | md5 stringlengths 32 32 | text stringlengths 23 843k |
|---|---|---|---|---|---|---|---|---|
github | bozso/orb_prop-master | rad2hms.m | .m | orb_prop-master/vallado/rad2hms.m | 1,345 | utf_8 | 72736e6c477db66ef04b07721758ca49 | % -----------------------------------------------------------------------------
%
% function rad2hms
%
% this function converts radians to hours, minutes and seconds. notice
% the conversion 0.2617 is simply the radian equivalent of 15 degrees.
%
% author : david vallado ... |
github | bozso/orb_prop-master | anglesg.m | .m | orb_prop-master/vallado/anglesg.m | 13,583 | utf_8 | 44815899f9900f35e85670f632802b59 | % ------------------------------------------------------------------------------
%
% function anglesg
%
% this function solves the problem of orbit determination using three
% optical sightings. the solution function uses the gaussian technique.
% there are lots of debug statemen... |
github | bozso/orb_prop-master | finitediff.m | .m | orb_prop-master/vallado/finitediff.m | 2,587 | utf_8 | 1f983899ea17ef2902e510e7c3eafcaf | % -----------------------------------------------------------------------------
%
% procedure finitediff
%
% this procedure perturbs the components of the state vector for processing
% with the finite differencing for the a matrix.
%
% author : david vallado 719... |
github | bozso/orb_prop-master | ecef2tod.m | .m | orb_prop-master/vallado/ecef2tod.m | 2,862 | utf_8 | 06734c9fdc01a7af5c5b7e30f7fed836 | %
% ----------------------------------------------------------------------------
%
% function ecef2tod
%
% this function transforms a vector from the earth fixed (itrf) frame, to
% the true of date (tod).
%
% author : david vallado 719-573-2600 4 jun 20... |
github | bozso/orb_prop-master | coveq2cl.m | .m | orb_prop-master/vallado/coveq2cl.m | 4,999 | utf_8 | 094e9f2ebacecade28dad3345fdead2a | % ----------------------------------------------------------------------------
%
% function coveq2cl
%
% this function transforms a six by six covariance matrix expressed in
% equinoctial elements into one expressed in classical orbital elements.
%
% author : david vallado ... |
github | bozso/orb_prop-master | satfov.m | .m | orb_prop-master/vallado/satfov.m | 3,552 | utf_8 | 6049dbceb3faa0e6fdd9e075cbc3bf5c | % ------------------------------------------------------------------------------
%
% function satfov
%
% this function finds parameters relating to a satellite's fov.
%
% author : david vallado 719-573-2600 27 may 2002
%
% revisions
% -
%
... |
github | bozso/orb_prop-master | iau00pna.m | .m | orb_prop-master/vallado/iau00pna.m | 12,759 | utf_8 | ea50e63a44a83d2285877a4b0ffa2a40 | %
% ----------------------------------------------------------------------------
%
% function iau00pna
%
% this function calulates the transformation matrix that accounts for the
% effects of precession-nutation in the iau2000a theory.
%
% author : david vallado ... |
github | bozso/orb_prop-master | rot2.m | .m | orb_prop-master/vallado/rot2.m | 1,062 | utf_8 | 4d75a3ea217f9c71dde45475650759c9 | % ------------------------------------------------------------------------------
%
% function rot2
%
% this function performs a rotation about the 2nd axis.
%
% author : david vallado 719-573-2600 27 may 2002
%
% revisions
% -
%
% inputs... |
github | bozso/orb_prop-master | lambertb.m | .m | orb_prop-master/vallado/lambertb.m | 8,240 | utf_8 | c03a03477da2a42fe0bb9bf57c221a6a | % ------------------------------------------------------------------------------
%
% function lambertb
%
% this function solves lambert's problem using battins method. the method is
% developed in battin (1987). it uses continued fractions to speed the
% solution and has several p... |
github | bozso/orb_prop-master | ijk2ll.m | .m | orb_prop-master/vallado/ijk2ll.m | 3,292 | utf_8 | 017e23f0c79a5703928bbcdf3c73e644 | %
% ------------------------------------------------------------------------------
%
% function ijk2ll
%
% these subroutines convert a geocentric equatorial position vector into
% latitude and longitude. geodetic and geocentric latitude are found. the
% inputs must be ecef.
%
... |
github | bozso/orb_prop-master | site.m | .m | orb_prop-master/vallado/site.m | 2,163 | utf_8 | 2fb866acfddceaff1ac368c2ea7cc2c5 | %
% ---------------------------------------------------------------------------
%
% function site
%
% this function finds the position and velocity vectors for a site. the
% answer is returned in the geocentric equatorial (ecef) coordinate system.
% note that the velocity is ze... |
github | bozso/orb_prop-master | mag.m | .m | orb_prop-master/vallado/mag.m | 994 | utf_8 | 692971fab2efc7cc1a386b571082890a | % ------------------------------------------------------------------------------
%
% function mag
%
% this function finds the magnitude of a vector. the tolerance is set to
% 0.000001, thus the 1.0e-12 for the squared test of underflows.
%
% author : david vallado ... |
github | bozso/orb_prop-master | invjday.m | .m | orb_prop-master/vallado/invjday.m | 2,640 | utf_8 | 10cc52dbe259ca9325c6be31dbb98dd9 | % ------------------------------------------------------------------------------
%
% function invjday
%
% this function finds the year, month, day, hour, minute and second
% given the julian date. tu can be ut1, tdt, tdb, etc.
%
% author : david vallado 719-... |
github | bozso/orb_prop-master | hohmann.m | .m | orb_prop-master/vallado/hohmann.m | 3,339 | utf_8 | 5212d772a89d1d50951e067335c66b3d | % ------------------------------------------------------------------------------
%
% procedure hohmann
%
% this procedure calculates the delta v's for a hohmann transfer for either
% circle to circle, or ellipse to ellipse.
%
% author : david vallado 719-573... |
github | bozso/orb_prop-master | recovpar.m | .m | orb_prop-master/vallado/recovpar.m | 1,385 | utf_8 | fe2466a3f22d88efac7f35bcf9adca53 | %
% ------------------------------------------------------------------------------
%
% function recovpar
%
% this function recovers the time and function values in parabolic blending routines.
%
% author : david vallado 719-573-2600 11 dec 2002
%
% revis... |
github | bozso/orb_prop-master | eq2rv.m | .m | orb_prop-master/vallado/eq2rv.m | 4,236 | utf_8 | 3407b369d7017c3ff23031fa86e80591 | % ------------------------------------------------------------------------------
%
% function eq2rv
%
% this function finds the classical orbital elements given the equinoctial
% elements.
%
% author : david vallado 719-573-2600 9 jun 2002
%
% revision... |
github | bozso/orb_prop-master | hms2sec.m | .m | orb_prop-master/vallado/hms2sec.m | 1,094 | utf_8 | d2f789a0c1044c71efc472df87e2a07f | % -----------------------------------------------------------------------------
%
% function hms2sec
%
% this function converts hours, minutes and seconds into seconds from the
% beginning of the day.
%
% author : david vallado 719-573-2600 27 may 2002
%
... |
github | bozso/orb_prop-master | rot1mat.m | .m | orb_prop-master/vallado/rot1mat.m | 1,122 | utf_8 | fdf82a20b28ffad1c1fbe41018cd926a | % ------------------------------------------------------------------------------
%
% rot1mat
%
% this function sets up a rotation matrix for an input angle about the first
% axis.
%
% author : david vallado 719-573-2600 10 jan 2003
%
% revisions
... |
github | bozso/orb_prop-master | teme2ecef.m | .m | orb_prop-master/vallado/teme2ecef.m | 2,621 | utf_8 | a095bd4886871cbf372fe1db35aa2f26 | % ----------------------------------------------------------------------------
%
% function teme2ecef
%
% this function trsnforms a vector from the true equator mean equniox frame
% (teme), to an earth fixed (ITRF) frame. the results take into account
% the effects of sidereal ti... |
github | bozso/orb_prop-master | mod2eci.m | .m | orb_prop-master/vallado/mod2eci.m | 1,608 | utf_8 | b8ec084021a6ffb04a3a220e593d6e3e | %
% ----------------------------------------------------------------------------
%
% function mod2eci
%
% this function transforms a vector from the mean equator mean equinox of
% date (mod) to the mean equator mean equinox (j2000) frame.
%
% author : david vallado ... |
github | bozso/orb_prop-master | razel2rv.m | .m | orb_prop-master/vallado/razel2rv.m | 3,355 | utf_8 | b5ac9d69c411e225429eeed6ef1ef863 | %
% ------------------------------------------------------------------------------
%
% function razel2rv
%
% this function converts range, azimuth, and elevation and their rates to
% the geocentric equatorial (eci) position and velocity vectors.
%
% author : david vallado ... |
github | bozso/orb_prop-master | fundarg.m | .m | orb_prop-master/vallado/fundarg.m | 7,732 | utf_8 | dec604f6efd5ecc852145f4e3ea1ccdc | %
% ----------------------------------------------------------------------------
%
% function fundarg
%
% this function calulates the delauany variables and planetary values for
% several theories.
%
% author : david vallado 719-573-2600 16 jul 2004
%
% ... |
github | bozso/orb_prop-master | rv2ntw.m | .m | orb_prop-master/vallado/rv2ntw.m | 2,277 | utf_8 | fb3bf39e004fd37022d91bc6966d7364 | % ------------------------------------------------------------------------------
%
% function rv2ntw
%
% this function converts position and velocity vectors into normal (in-radial),
% tangential (velocity), and normal (cross-track) coordinates. note that sometimes
% the first ve... |
github | bozso/orb_prop-master | dscom.m | .m | orb_prop-master/vallado/dscom.m | 8,536 | utf_8 | 9d59d451aa72b865cf7d6f6f4d1a3901 | % -----------------------------------------------------------------------------
%
% procedure dscom
%
% this procedure provides deep space common items used by both the secular
% and periodics subroutines. input is provided as shown. this routine
% used to be called dpper, bu... |
github | bozso/orb_prop-master | initl.m | .m | orb_prop-master/vallado/initl.m | 4,253 | utf_8 | f55940cdf02c13c034b82644401eb186 | % -----------------------------------------------------------------------------
%
% procedure initl
%
% this procedure initializes the spg4 propagator. all the initialization is
% consolidated here instead of having multiple loops inside other routines.
%
% Author:
% Jeff Bec... |
github | bozso/orb_prop-master | hillsv.m | .m | orb_prop-master/vallado/hillsv.m | 2,080 | utf_8 | 65dac45effb5b40c365eee5baafbf41b | %
% ------------------------------------------------------------------------------
%
% function hillsv
%
% this function calculates initial velocity for hills equations.
%
% author : david vallado 719-573-2600 1 mar 2001
%
% inputs description ... |
github | bozso/orb_prop-master | cubicspl.m | .m | orb_prop-master/vallado/cubicspl.m | 1,601 | utf_8 | ffb730e77a33fda29b44f20b8e90ac20 | %
% ------------------------------------------------------------------------------
%
% function cubicspl
%
% this function performs cubic splining of an input zero crossing
% function in order to find function values.
%
% author : david vallado 719-573-2600 ... |
github | bozso/orb_prop-master | cubic.m | .m | orb_prop-master/vallado/cubic.m | 4,807 | utf_8 | ee77177b82723492be5ceb705163fb18 | %
% ------------------------------------------------------------------------------
%
% function cubic
%
% this function solves for the three roots of a cubic equation. there are
% no restrictions on the coefficients, and imaginary results are passed
% out as separate values. t... |
github | bozso/orb_prop-master | convtime.m | .m | orb_prop-master/vallado/convtime.m | 10,815 | utf_8 | 5f6d4dee76f1053edb8a4f9c00eb7e8f | % ------------------------------------------------------------------------------
%
% function convtime
%
% this function finds the time parameters and julian century values for inputs
% of utc or ut1. numerous outputs are found as shown in the local variables.
% because calucation... |
github | bozso/orb_prop-master | eci2pef.m | .m | orb_prop-master/vallado/eci2pef.m | 2,771 | utf_8 | 8c668a9de302664e0ce833bb173a01a7 | %
% ----------------------------------------------------------------------------
%
% function eci2pef
%
% this function transforms a vector from the mean equator, mean equinox frame
% (j2000), to the pseudo earth fixed frame (pef).
%
% author : david vallado ... |
github | bozso/orb_prop-master | recovqd.m | .m | orb_prop-master/vallado/recovqd.m | 1,192 | utf_8 | b8570f6ab05b0cf9da61edb0a8163c24 | %
% ------------------------------------------------------------------------------
%
% function recovqd
%
% this function recovers the time and function values in parabolic blending routines.
%
% author : david vallado 719-573-2600 3 jan 2003
%
% revisi... |
github | bozso/orb_prop-master | iau00f2i.m | .m | orb_prop-master/vallado/iau00f2i.m | 4,598 | utf_8 | 5ddd3bb63ad76f47a8a2e150037c6c41 | %
% ----------------------------------------------------------------------------
%
% function iau00f2i
%
% this function transforms a vector from the earth fixed (itrf) frame, to
% the eci mean equator mean equinox (gcrf).
%
% author : david vallado 719-57... |
github | bozso/orb_prop-master | recovqt.m | .m | orb_prop-master/vallado/recovqt.m | 1,607 | utf_8 | 9f730c7a07107393bfce175564e2a33d | %
% ------------------------------------------------------------------------------
%
% function recovqt
%
% this function recovers the time and function values in quartic blending routines.
%
% author : david vallado 719-573-2600 11 dec 2002
%
% revision... |
github | bozso/orb_prop-master | kepler.m | .m | orb_prop-master/vallado/kepler.m | 9,665 | utf_8 | a424f40a82ca789888f5b4c3fe33f981 | % ------------------------------------------------------------------------------
%
% function kepler
%
% this function solves keplers problem for orbit determination and returns a
% future geocentric equatorial (ijk) position and velocity vector. the
% solution uses universal var... |
github | bozso/orb_prop-master | sidereal.m | .m | orb_prop-master/vallado/sidereal.m | 3,304 | utf_8 | c6a016f5586f505b2473f225fae51391 | %
% ----------------------------------------------------------------------------
%
% function sidereal
%
% this function calulates the transformation matrix that accounts for the
% effects of sidereal time. Notice that deltaspi should not be moded to a
% positive number because ... |
github | bozso/orb_prop-master | rendz.m | .m | orb_prop-master/vallado/rendz.m | 4,925 | utf_8 | 431cf4713f643a8f3b7d63f7a0664fda | % ------------------------------------------------------------------------------
%
% procedure rendz
%
% this procedure calculates parameters for a hohmann transfer rendezvous.
%
% author : david vallado 719-573-2600 1 mar 2001
%
% inputs descript... |
github | bozso/orb_prop-master | sunill.m | .m | orb_prop-master/vallado/sunill.m | 3,395 | utf_8 | 842ebafaa433634f6c8fe9c6316e007e | % ------------------------------------------------------------------------------
%
% function sunill
%
% this function calculates the illumination due to the sun.
%
% author : david vallado 719-573-2600 9 jun 2002
%
% revisions
% -
%
% i... |
github | bozso/orb_prop-master | findc2c3.m | .m | orb_prop-master/vallado/findc2c3.m | 1,588 | utf_8 | 4f3916c84b71b9d9f0911607577de183 | % ------------------------------------------------------------------------------
%
% function findc2c3
%
% this function calculates the c2 and c3 functions for use in the universal
% variable calculation of z.
%
% author : david vallado 719-573-2600 27 may... |
github | bozso/orb_prop-master | pathm.m | .m | orb_prop-master/vallado/pathm.m | 2,839 | utf_8 | fa08561661b0b589bc1fa7995e7da9c2 | % ------------------------------------------------------------------------------
%
% function pathm
%
% this function determines the end position for a given range and azimuth
% from a given point.
%
% author : david vallado 719-573-2600 27 may 2002
%
% ... |
github | bozso/orb_prop-master | iau00era.m | .m | orb_prop-master/vallado/iau00era.m | 1,527 | utf_8 | ec412a8ce87040dbfa7353034016c9d8 | %
% ----------------------------------------------------------------------------
%
% function iau00era
%
% this function calulates the transformation matrix that accounts for the
% effects of sidereal time via the earth rotation angle.
%
% author : david vallado ... |
github | bozso/orb_prop-master | ijk2llb.m | .m | orb_prop-master/vallado/ijk2llb.m | 3,229 | utf_8 | e0cb1ab77b38fd2cd8e56b338a3f5696 | %
% ------------------------------------------------------------------------------
%
% function ijk2llb
%
% these subroutines convert a geocentric equatorial (ijk) position vector into
% latitude and longitude. geodetic and geocentric latitude are found.
%
% author : davi... |
github | bozso/orb_prop-master | ecef2mod.m | .m | orb_prop-master/vallado/ecef2mod.m | 2,876 | utf_8 | e443fc91f061472714ffdff35ba436a7 | %
% ----------------------------------------------------------------------------
%
% function ecef2mod
%
% this function transforms a vector from the earth fixed (itrf) frame, to
% the mean of date (mod) frame.
%
% author : david vallado 719-573-2600 4 ... |
github | bozso/orb_prop-master | iau80in.m | .m | orb_prop-master/vallado/iau80in.m | 1,271 | utf_8 | 3f5e1817c9a9270bcea39f5163c9eb46 | % ----------------------------------------------------------------------------
%
% function iau80in
%
% this function initializes the nutation matricies needed for reduction
% calculations. the routine needs the filename of the files as input.
%
% author : david vallado ... |
github | bozso/orb_prop-master | precess.m | .m | orb_prop-master/vallado/precess.m | 8,875 | utf_8 | 020ee61797ea232b1cf032d6b85fbc19 | %
% ----------------------------------------------------------------------------
%
% function precess
%
% this function calulates the transformation matrix that accounts for the effects
% of precession. both the 1980 and 2000 theories are handled. note that the
% required param... |
github | bozso/orb_prop-master | seebatt.m | .m | orb_prop-master/vallado/seebatt.m | 2,658 | utf_8 | a99c301a5a9ca1f0e9257e6b1f349a16 | % ------- two recursion algorithms needed by the lambertbattin routine
function seebatt = seebat( v );
% ------------------------- implementation -------------------------
c(1) = 0.2;
c(2) = 9.0 / 35.0;
c(3) = 16.0 / 63.0;
c(4) = 25.0 / 99.0;
c(... |
github | bozso/orb_prop-master | iau00xys.m | .m | orb_prop-master/vallado/iau00xys.m | 13,779 | utf_8 | 8809c5ebbed375d57305acc31682bf47 | %
% ----------------------------------------------------------------------------
%
% function iau00xys
%
% this function calulates the transformation matrix that accounts for the
% effects of precession-nutation in the iau2000 theory.
%
% author : david vallado ... |
github | bozso/orb_prop-master | sgp4.m | .m | orb_prop-master/vallado/sgp4.m | 12,356 | utf_8 | d18299455617041597878e2513e67ed4 | % -----------------------------------------------------------------------------
%
% procedure sgp4
%
% this procedure is the sgp4 prediction model from space command. this is an
% updated and combined version of sgp4 and sdp4, which were originally
% published separately in spa... |
github | bozso/orb_prop-master | quadric.m | .m | orb_prop-master/vallado/quadric.m | 2,757 | utf_8 | 96a689018028506386ffa071252562b2 | %
% ------------------------------------------------------------------------------
%
% function quadric
%
% this function solves for the two roots of a quadric equation. there are
% no restrictions on the coefficients, and imaginary results are passed
% out as separate values. ... |
github | bozso/orb_prop-master | gibbs.m | .m | orb_prop-master/vallado/gibbs.m | 4,335 | utf_8 | e75fa6cb7af6b2b2265e300fcc92fd4b | %
% ------------------------------------------------------------------------------
%
% function gibbs
%
% this function performs the gibbs method of orbit determination. this
% method determines the velocity at the middle point of the 3 given position
% vectors.
%
% author ... |
github | bozso/orb_prop-master | unit.m | .m | orb_prop-master/vallado/unit.m | 1,146 | utf_8 | b52b673752cacfc51b34ec4f8d51420e | % ------------------------------------------------------------------------------
%
% function unit
%
% this function calculates a unit vector given the original vector. if a
% zero vector is input, the vector is set to zero.
%
% author : david vallado 719-5... |
github | bozso/orb_prop-master | fk4.m | .m | orb_prop-master/vallado/fk4.m | 3,539 | utf_8 | 29322f1b2653b75ee86fd7af34abb664 | % ----------------------------------------------------------------------------
%
% function fk4
%
% this function converts vectors between the b1950 and j2000 epochs. be
% aware that this process is not exact. there are different secular rates
% for each system, and there are dif... |
github | bozso/orb_prop-master | rot3mat.m | .m | orb_prop-master/vallado/rot3mat.m | 1,124 | utf_8 | d11122ab13c7c2697ed50823bc2f3302 | % ------------------------------------------------------------------------------
%
% rot3mat
%
% this function sets up a rotation matrix for an input angle about the third
% axis.
%
% author : david vallado 719-573-2600 10 jan 2003
%
% revisions
... |
github | bozso/orb_prop-master | anglesdr.m | .m | orb_prop-master/vallado/anglesdr.m | 7,603 | utf_8 | 9f920ea3d75da53a0ce344839b81915f | % ------------------------------------------------------------------------------
%
% function anglesdr
%
% this function solves the problem of orbit determination using three
% optical sightings. the solution function uses the double-r technique.
%
% author : david vallado ... |
github | bozso/orb_prop-master | nu2lon.m | .m | orb_prop-master/vallado/nu2lon.m | 1,612 | utf_8 | f0c5cdf20e4a7998b5bdada9a0e831e5 | %
% convert orbital elments and find lon
% input all angles in rad
% output is in rad
% dav 6 may 2011
%
% jdut1=jday(2011,3,22,12,30,0);
% incl = 0.04801366433780/rad;
% raan = 330.034263262230/rad;
% argp = 91.3766761083524/rad;
% lon = -7.2935047164727/rad;
%
function lon = nu2lon( jdut1, nu, i... |
github | bozso/orb_prop-master | ECI_to_EQCM_RTN_sal.m | .m | orb_prop-master/vallado/ECI_to_EQCM_RTN_sal.m | 5,019 | utf_8 | 01cb3d5ce3af67124dffd82f398b75bf | % ------------------------------------------------------------------------------
%
% function ECI_to_EQCM_RTN_sal
%
% this function finds the relative pos/vel vectors in the Modified
% Equidistant Cylindrical (EQCM) frame given the ECI target and
% interceptor vectors with RTN (=RSW... |
github | bozso/orb_prop-master | parabbln.m | .m | orb_prop-master/vallado/parabbln.m | 2,116 | utf_8 | 294948a47b1d58fb10493bbd386f2b55 | % ------------------------------------------------------------------------------
%
% function parabbln
%
% this function performs parabolic blending of an input zero crossing
% function in order to find event times.
%
% author : david vallado 719-573-2600 1... |
github | bozso/orb_prop-master | teme2eci.m | .m | orb_prop-master/vallado/teme2eci.m | 2,283 | utf_8 | de850f941a2cb71f6811cd7255f1141e | % ----------------------------------------------------------------------------
%
% function teme2eci
%
% this function transforms a vector from the true equator mean equinox system,
% (teme) to the mean equator mean equinox (j2000) system.
%
% author : david vallado ... |
github | bozso/orb_prop-master | rv2tradc.m | .m | orb_prop-master/vallado/rv2tradc.m | 4,666 | utf_8 | cc03a01eb5c4f9f99e8e5d601b26418e | %
% ------------------------------------------------------------------------------
%
% function rv2tradc
%
% this function converts geocentric equatorial (eci) position and velocity
% vectors into range, topcentric right acension, declination, and rates.
% notice the value of ... |
github | bozso/orb_prop-master | coveq2ct.m | .m | orb_prop-master/vallado/coveq2ct.m | 12,195 | utf_8 | 049eaca267a298dd90bb315c8307ccd9 | % ----------------------------------------------------------------------------
%
% function coveq2ct
%
% this function transforms a six by six covariance matrix expressed in
% equinoctial elements into one expressed in cartesian elements.
%
% author : david vallado ... |
github | bozso/orb_prop-master | dms2rad.m | .m | orb_prop-master/vallado/dms2rad.m | 1,152 | utf_8 | b0aab67b43845334368c743f8409c030 | % -----------------------------------------------------------------------------
%
% function dms2rad
%
% this function converts degrees, minutes and seconds into radians.
%
% author : david vallado 719-573-2600 27 may 2002
%
% revisions
% -
... |
github | bozso/orb_prop-master | EQCM_to_ECI_RTN_sal.m | .m | orb_prop-master/vallado/EQCM_to_ECI_RTN_sal.m | 5,156 | utf_8 | 3e8f02313462382d29ea666eba7b27db | % ------------------------------------------------------------------------------
%
% function EQCM_to_ECI_RTN_sal
%
% this function finds the interceptor's ECI (RTN) pos/vel vectors
% given the ECI target and Modified Equidistant Cylindrical (EQCM)
% interceptor vectors.
%
% Rout... |
github | bozso/orb_prop-master | rv2ell.m | .m | orb_prop-master/vallado/rv2ell.m | 1,323 | utf_8 | bf0182292cd8a37083c40c9c4337d7de | %
% position and velocity to ecliptic latitude longitude
% dav 28 mar 04
%
% [rr,ecllon,ecllat,drr,decllon,decllat] = rv2ell (rijk,vijk);
function [rr,ecllon,ecllat,drr,decllon,decllat] = rv2ell (rijk,vijk);
% -------------------- implementation ----------------------
constmath;
o... |
github | bozso/orb_prop-master | getintmo.m | .m | orb_prop-master/vallado/getintmo.m | 973 | utf_8 | ec8fedfd905827a283d440a386241ed4 | %
% -----------------------------------------------------------------------------
%
% function getintmon
%
% this function finds the integer equivalent of the 3 character string
% representation of month.
%
% revisions
% -
%
% inputs description ... |
github | bozso/orb_prop-master | newtonm.m | .m | orb_prop-master/vallado/newtonm.m | 4,564 | utf_8 | 21b3a96b2ba16e2dc496c4b68619cafa | % ------------------------------------------------------------------------------
%
% function newtonm
%
% this function performs the newton rhapson iteration to find the
% eccentric anomaly given the mean anomaly. the true anomaly is also
% calculated.
%
% author : davi... |
github | bozso/orb_prop-master | pef2eci.m | .m | orb_prop-master/vallado/pef2eci.m | 2,717 | utf_8 | 1765ea09d26cbec37448ff41ed08bb9d | %
% ----------------------------------------------------------------------------
%
% function pef2eci
%
% this function trsnforms a vector from the pseudo earth fixed frame (pef),
% to the mean equator mean equinox (j2000) frame.
%
% author : david vallado ... |
github | bozso/orb_prop-master | checkhit.m | .m | orb_prop-master/vallado/checkhit.m | 2,833 | utf_8 | 4326688032b1a6c2e1209092917835b7 | % ------------------------------------------------------------------------------
%
% function checkhitearth
%
% this function checks to see if the trajectory hits the earth during the
% transfer. the first check determines if the satellite is initially
% heading towards perigee, ... |
github | bozso/orb_prop-master | newtonnu.m | .m | orb_prop-master/vallado/newtonnu.m | 3,093 | utf_8 | eae34b860af855066fc499bace3fc39c | % ------------------------------------------------------------------------------
%
% function newtonnu
%
% this function solves keplers equation when the true anomaly is known.
% the mean and eccentric, parabolic, or hyperbolic anomaly is also found.
% the parabolic limit at 168 i... |
github | bozso/orb_prop-master | matvecmult.m | .m | orb_prop-master/vallado/matvecmult.m | 1,048 | utf_8 | eee8726d498ed04163a4621cff730332 | % ------------------------------------------------------------------------------
%
% function matvecmult
%
% this function multiplies a matrix by a vector.
%
% author : david vallado 719-573-2600 4 jun 2002
%
% revisions
% -
%
% inputs ... |
github | bozso/orb_prop-master | quartic.m | .m | orb_prop-master/vallado/quartic.m | 7,425 | utf_8 | 2523c85e19e053491ceaf8840d660aa1 | %
% ------------------------------------------------------------------------------
%
% function quartic
%
% this function solves for the four roots of a quartic equation. there are
% no restrictions on the coefficients, and imaginary results are passed
% out as separate values.... |
github | bozso/orb_prop-master | orbit_arc_sal2.m | .m | orb_prop-master/vallado/orbit_arc_sal2.m | 2,230 | utf_8 | 917733aedcef1e7849a2efa274b0e84b |
% ------------------------------------------------------------------------------
%
% function orbit_arc_sal2
%
%
% Computes the length of an arc on a closed orbit
% between true anomaly angles nu1 and nu2 (in radians).
% Arc length is determined by dividing the arc in small straight ... |
github | bozso/orb_prop-master | sgp4init.m | .m | orb_prop-master/vallado/sgp4init.m | 15,140 | utf_8 | 253c853b8d2cc6a6a4d4f5d2bf9e1458 | % -----------------------------------------------------------------------------
%
% procedure sgp4init
%
% this procedure initializes variables for sgp4.
%
% Author:
% Jeff Beck
% beckja@alumni.lehigh.edu
% 1.0 (aug 7, 2006) - update for paper dav
% original comments fro... |
github | bozso/orb_prop-master | dsinit.m | .m | orb_prop-master/vallado/dsinit.m | 12,090 | utf_8 | a1130e37c2f5ce359a794c73f1dde44c | % -----------------------------------------------------------------------------
%
% procedure dsinit
%
% this procedure provides deep space contributions to mean motion dot due
% to geopotential resonance with half day and one day orbits.
%
% Author:
% Jeff Beck
% beckja@... |
github | bozso/orb_prop-master | finddays.m | .m | orb_prop-master/vallado/finddays.m | 1,948 | utf_8 | d4dd32ee9a16d6a4fa95618aaba1d2a3 | % ------------------------------------------------------------------------------
%
% function finddays
%
% this function finds the fractional days through a year given the year,
% month, day, hour, minute and second.
%
% author : david vallado 719-573-2600 ... |
github | bozso/orb_prop-master | iau00in.m | .m | orb_prop-master/vallado/iau00in.m | 5,199 | utf_8 | 0686242eb04be9cdede3f97c3cd8e28b | %
% ----------------------------------------------------------------------------
%
% function iau00in
%
% this function initializes the matricies needed for iau 2000 reduction
% calculations. the routine uses the files listed as inputs, but they are
% are not input to the routin... |
github | bozso/orb_prop-master | ell2rv.m | .m | orb_prop-master/vallado/ell2rv.m | 939 | utf_8 | 4aa6d66e47abf5c2a444328874280e13 | %
% ecliptic latitude longitude to position and velocity
% dav 28 mar 04
%
% [rijk,vijk] = ell2rv ( rr,ecllon,ecllat,drr,decllon,decllat );
function [rijk,vijk] = ell2rv ( rr,ecllon,ecllat,drr,decllon,decllat );
% -------------------- implementation ----------------------
obliquity= 0.4090... |
github | bozso/orb_prop-master | ionlychg.m | .m | orb_prop-master/vallado/ionlychg.m | 985 | utf_8 | 75d2847223837dc7c266f305a4d52293 | % ------------------------------------------------------------------------------
%
% procedure ionlychg
%
% this procedure calculates the delta v's for a change in inclination only.
%
% author : david vallado 719-573-2600 1 mar 2001
%
% inputs des... |
github | bozso/orb_prop-master | gstime.m | .m | orb_prop-master/vallado/gstime.m | 1,547 | utf_8 | 7f7badf11ce7e204592a0d305bf224b0 | % -----------------------------------------------------------------------------
%
% function gstime
%
% this function finds the greenwich sidereal time (iau-82).
%
% author : david vallado 719-573-2600 7 jun 2002
%
% revisions
% -
%
% in... |
github | bozso/orb_prop-master | covct2eq.m | .m | orb_prop-master/vallado/covct2eq.m | 9,198 | utf_8 | dd24c4df650d62e5709a8acac801b2fb | % ----------------------------------------------------------------------------
%
% function covct2eq
%
% this function transforms a six by six covariance matrix expressed in
% cartesian vectors into one expressed in equinoctial elements.
%
% author : david vallado ... |
github | bozso/orb_prop-master | rad2dms.m | .m | orb_prop-master/vallado/rad2dms.m | 1,242 | utf_8 | 5a106c6b21c94c4d2a669d2d46d63bf2 | % -----------------------------------------------------------------------------
%
% function rad2dms
%
% this function converts radians to degrees, minutes and seconds.
%
% author : david vallado 719-573-2600 27 may 2002
%
% revisions
% -
%... |
github | bozso/orb_prop-master | newtone.m | .m | orb_prop-master/vallado/newtone.m | 2,419 | utf_8 | f8bed57680d21539f865b1a23129a91a | % ------------------------------------------------------------------------------
%
% function newtone
%
% this function solves keplers equation when the eccentric, paraboic, or
% hyperbolic anomalies are known. the mean anomaly and true anomaly are
% calculated.
%
% author ... |
github | bozso/orb_prop-master | gc2gd.m | .m | orb_prop-master/vallado/gc2gd.m | 1,106 | utf_8 | 5e734728b1d81b88b50bacdfaa0f9c66 | % ------------------------------------------------------------------------------
%
% function gc2gd
%
% this function converts from geodetic to geocentric latitude for positions
% on the surface of the earth. notice that (1-f) squared = 1-esqrd.
%
% author : david vallado ... |
github | bozso/orb_prop-master | angl.m | .m | orb_prop-master/vallado/angl.m | 1,369 | utf_8 | 6dbecfa78ac24bd4c0b0b2ea62658da3 | % ------------------------------------------------------------------------------
%
% function angl
%
% this function calculates the angle between two vectors. the output is
% set to 999999.1 to indicate an undefined value. be sure to check for
% this at the output phase.
%
% ... |
github | bozso/orb_prop-master | onetang.m | .m | orb_prop-master/vallado/onetang.m | 5,976 | utf_8 | f37ff6d89712a25ace7b1e38bee265e1 | % ------------------------------------------------------------------------------
%
% procedure onetang
%
% this procedure calculates the delta v's for a one tangent transfer for either
% circle to circle, or ellipse to ellipse.
%
% author : david vallado 719... |
github | bozso/orb_prop-master | coe2rv.m | .m | orb_prop-master/vallado/coe2rv.m | 3,826 | utf_8 | 5d6cf5748f8b6c07088708a7a5a406a4 | %
% ------------------------------------------------------------------------------
%
% function coe2rv
%
% this function finds the position and velocity vectors in geocentric
% equatorial (ijk) system given the classical orbit elements.
%
% author : david vallado ... |
github | bozso/orb_prop-master | rot2mat.m | .m | orb_prop-master/vallado/rot2mat.m | 1,125 | utf_8 | 916da6cdae1146f945e621145ae30ddf | % ------------------------------------------------------------------------------
%
% rot2mat
%
% this function sets up a rotation matrix for an input angle about the second
% axis.
%
% author : david vallado 719-573-2600 10 jan 2003
%
% revisions... |
github | bozso/orb_prop-master | iau00pnb.m | .m | orb_prop-master/vallado/iau00pnb.m | 9,335 | utf_8 | 9594c10ade8bdf6b409cb78508b1b6e6 | %
% ----------------------------------------------------------------------------
%
% function iau00pnb
%
% this function calulates the transformation matrix that accounts for the
% effects of precession-nutation in the iau2000b theory.
%
% author : david vallado ... |
github | bozso/orb_prop-master | hillsr.m | .m | orb_prop-master/vallado/hillsr.m | 2,335 | utf_8 | d451a4757b74cac5a96f96de868d79da | % ------------------------------------------------------------------------------
%
% function hillsr
%
% this function calculates various position information for hills equations.
%
% author : david vallado 719-573-2600 1 mar 2001
%
% inputs descr... |
github | bozso/orb_prop-master | moon.m | .m | orb_prop-master/vallado/moon.m | 3,823 | utf_8 | c122d7c5592d889f5c3ba32f0e566cea | % ------------------------------------------------------------------------------
%
% function moon
%
% this function calculates the geocentric equatorial (ijk) position vector
% for the moon given the julian date.
%
% author : david vallado 719-573-2600 27... |
github | bozso/orb_prop-master | adbar2rv.m | .m | orb_prop-master/vallado/adbar2rv.m | 1,915 | utf_8 | 6a6f7b08ef2a701f98cea5030b7ee090 | % ----------------------------------------------------------------------------
%
% function adbar2rv.m
%
% this function transforms the adbarv elements (rtasc, decl, fpa, azimuth,
% position and velocity magnitude) into eci position and velocity vectors.
%
% author : david v... |
github | bozso/orb_prop-master | iau00gst.m | .m | orb_prop-master/vallado/iau00gst.m | 4,510 | utf_8 | d58674778b528fdc1aaa24af315729bd | %
% -----------------------------------------------------------------------------
%
% function iau00gst
%
% this function finds the iau2000 greenwich sidereal time.
%
% author : david vallado 719-573-2600 16 jul 2004
%
% revisions
%
% inputs d... |
github | bozso/orb_prop-master | noncoplr.m | .m | orb_prop-master/vallado/noncoplr.m | 3,030 | utf_8 | 601e554544d24722a1e1f81713e698b5 | % -----
% vallado 2007, 370, alg 46, ex 6-10
% function [ttrans,tphase,dvphase,dvtrans1,dvtrans2,aphase ] = noncoplr(phasei,aint,atgt,ktgt,kint,arglatint,nodeint,truelon,deltai);
%------ }
function [ttrans,tphase,dvphase,dvtrans1,dvtrans2,aphase ] = noncoplr(phasei,aint,atgt,ktgt,kint,arglatint,nodeint,tr... |
github | bozso/orb_prop-master | covct2clnew.m | .m | orb_prop-master/vallado/covct2clnew.m | 11,347 | utf_8 | 581fbce175e6d75bfda4580166f82025 | % ----------------------------------------------------------------------------
%
% function covct2cl
%
% this function transforms a six by six covariance matrix expressed in cartesian elements
% into one expressed in classical elements
%
% author : david vallado ... |
github | bozso/orb_prop-master | f_ECI_to_RTN_sal.m | .m | orb_prop-master/vallado/f_ECI_to_RTN_sal.m | 615 | utf_8 | 2877ccd04adb9b77323eb49412f99a84 | % ------------------------------------------------------------------------------
%
% function f_ECI_to_RTN_sal
%
% this function converts finds rotation matrix from ECI to RTN
%
% author : sal alfano 719-573-2600 11 aug 2010
% ------------------------------------... |
github | bozso/orb_prop-master | getgravc.m | .m | orb_prop-master/vallado/getgravc.m | 2,599 | utf_8 | 45cd8d3fdff1fa9aedb1080c17e0e3bf | % -----------------------------------------------------------------------------
%
% function getgravc
%
% this function gets constants for the propagator. note that mu is identified to
% facilitiate comparisons with newer models.
%
% author : david vallado 7... |
github | bozso/orb_prop-master | iandnode.m | .m | orb_prop-master/vallado/iandnode.m | 2,009 | utf_8 | f70911a69d9435fd44169609dce63ec8 | % ------------------------------------------------------------------------------
%
% procedure iandnode
%
% this procedure calculates the delta v's for a change in inclination and
% longitude of ascending node.
%
% author : david vallado 719-573-2600 1 m... |
github | bozso/orb_prop-master | rv2razel.m | .m | orb_prop-master/vallado/rv2razel.m | 5,089 | utf_8 | e606178f918c4ef83684ebccfa3f82e2 | % ------------------------------------------------------------------------------
%
% function rv2razel
%
% this function converts geocentric equatorial (eci) position and velocity
% vectors into range, azimuth, elevation, and rates. notice the value
% of small as it can affect th... |
github | bozso/orb_prop-master | rot3.m | .m | orb_prop-master/vallado/rot3.m | 1,062 | utf_8 | 5646857ee3ba36c828d1f2056272fcb3 | % ------------------------------------------------------------------------------
%
% function rot3
%
% this function performs a rotation about the 3rd axis.
%
% author : david vallado 719-573-2600 27 may 2002
%
% revisions
% -
%
% inputs... |
github | bozso/orb_prop-master | tod2eci.m | .m | orb_prop-master/vallado/tod2eci.m | 2,040 | utf_8 | 6b210212ed20a0d23c469bdab8c4424d | %
% ----------------------------------------------------------------------------
%
% function tod2eci
%
% this function transforms a vector from the true equator true equinox frame
% of date (tod), to the mean equator mean equinox (j2000) frame.
%
% author : david vallado ... |
github | bozso/orb_prop-master | moonill.m | .m | orb_prop-master/vallado/moonill.m | 2,311 | utf_8 | 2772c60fc9fa0b62a7cad130a0e0adad | % ------------------------------------------------------------------------------
%
% function moonill
%
% this function calculates the illumination due to the moon.
%
% author : david vallado 719-573-2600 9 jun 2002
%
% revisions
% -
%
% ... |
github | bozso/orb_prop-master | flt2rv.m | .m | orb_prop-master/vallado/flt2rv.m | 3,297 | utf_8 | 1096e5b8afdc36697964a637627fe997 | % ----------------------------------------------------------------------------
%
% function flt2rv.m
%
% this function transforms the flight elements - latgc, lon, fpav, az,
% position and velocity magnitude into an eci position and velocity vector.
%
% author : david valla... |
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