| # CISR24 storage schema |
|
|
| ## HDF5 |
|
|
| Each split file contains: |
|
|
| | Dataset | Dtype | Shape | Meaning | |
| | --- | --- | --- | --- | |
| | `/iq` | float32 | `[N, 2, 1024]` | I and Q channels | |
| | `/class-id` | uint16 | `[1, N]` | IDs 0 through 23 | |
| | `/snr-db` | float32 | `[1, N]` | SNR in dB | |
| | `/sample-index` | uint32 | `[1, N]` | global 1-based sample index | |
|
|
| Root attributes include `release_name`, `split`, `fs_hz`, `record_len`, |
| `total_count`, and `effective_snr_basis`. The public loader also recognizes the |
| legacy underscore aliases for provenance files, but canonical releases use the |
| hyphenated names above to match the paper. |
|
|
| No normalization, random crop, or test-time augmentation is applied when |
| reading the fixed 1024-sample records. |
|
|
| ## Manifest |
|
|
| Each manifest row maps one HDF5 row to its taxonomy, generation condition, and |
| waveform parameters. Canonical field names use lowercase kebab case, including: |
|
|
| ```text |
| sample-id, split, h5-rel-path, h5-dataset, h5-index, |
| class-id, super-class, class-name, waveform-family, |
| snr-db, fs-hz, n-samples, seed, active-len, start-offset, |
| channel-profile, release-name, iid-or-ood, effective-snr-basis |
| ``` |
|
|
| Waveform-specific fields include `symbol-rate-hz`, `sps`, `nfft`, `cp-len`, |
| `n-active`, `chirp-bw-hz`, `chirp-dir`, `pulse-width-us`, `barker-len`, |
| `costas-len`, `frank-order`, `p4-len`, `rrc-beta`, `ofdm-num-symbols`, |
| `costas-df-hz`, `costas-perm-id`, `chip-samples`, `gmsk-bt`, |
| `cpfsk-modulation-index`, and `cpfsk-tone-spacing-hz`. Barker and Costas may distribute a target active length |
| across chips by one-sample differences; for those classes, `chip-samples` is |
| `NaN` and `chip-samples-min`/`chip-samples-max` record the actual bounds. |
| Non-applicable values are encoded as `NaN`. |
|
|
