SimulaMet/gnss-nmea-jammertest25

GNSS NMEA Jammertest 2025

Raw receiver telemetry collected during the Jammertest 2025 campaign, used in the paper "GNSS Jamming and Spoofing Detection Using NMEA Data" (ICL-GNSS 2026).

Companion code (preprocessing, feature engineering, model training/evaluation) is available at: https://github.com/simula/icl-gnss26

Data Collection

The data was collected over five days in September 2025 on Andøya Island, Norway, across three test sites. The experimental plan is available online at https://github.com/NPRA/jammertest-plan, describing the different attacks generated using various hardware configurations.

Data were collected from a small OpenWrt/Linux-based measurement node equipped with two Sierra 7455 receiver modules. For each module, data were collected via the standard NMEA 0183 interface, timestamped using the local node clock, and stored on disk.

Dataset Structure

This repo has two configs, both keyed by ts / node_id / module_id so rows can be joined across configs.

gps config (~1.33M rows, from RMC/GGA sentences)

Column	Description
ts	Timestamp (local node clock, ms precision)
node_id	Measurement node identifier
module_id	Receiver module identifier (1 or 2, corresponding to the two antenna configurations)
fix_type	GPS fix quality/type code
latitude / longitude	Position, decimal degrees
altitude	Altitude, meters
speed_knots	Ground speed, knots
course	Heading, degrees
satellites_used	PRNs of satellites used in the position fix
satellites_visible	Number of satellites in view
hdop / vdop / pdop	Horizontal / vertical / position dilution of precision

constellation config (~2.12M rows, from GSV sentences)

Column	Description
ts	Timestamp (local node clock, ms precision)
node_id	Measurement node identifier
module_id	Receiver module identifier
prn	Satellite PRN / ID
elevation / azimuth	Satellite position, degrees
snr	Signal-to-noise ratio, dB-Hz
system	Constellation system code (e.g. GP = GPS, GL = GLONASS)

Citation

@inproceedings{icl-gnss26-mekrache,
  title={GNSS Jamming and Spoofing Detection Using NMEA Data},
  author={Mekrache, Abdelkader and Evang, Jan Marius and Gomola, Alojz and Cicic, Tarik},
  booktitle={International Conference on Localization and GNSS (ICL-GNSS 2026)},
  year={2026}
}