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  gengnss v0.1.0 Stable

  ykp released this 2026-09-22 21:01:50 +02:00 | 102 commits to main since this release

  First public release - GNSS open-service baseband signal generator.

  Tier-1 generators (ICD-verified)

  • GPS L1 C/A (PRN 1-37): first-10-chips octal verified against IS-GPS-200N Table 3-Ia;
    family correlation bound 65 (published C/A Gold bound)
  • GLONASS L1OF/L2OF FDMA (shared 511-chip ST code, per-slot channels)
  • BeiDou B1I/B3I (SV 1-63): ICD tables fetched and cross-validated; register
    convention (reciprocal polys) proven by 63/63 phase-pair reproduction and
    bit-equality with gnss-sdr replicas

  Core features

  • Feasibility module: Doppler-aware band-edge verdicts (INCLUDED/CAUTION/EXCLUDED)
  • Seeded, reproducible channel draws (Doppler/delay/phase/power) + sidecar scenario
  • Streaming generation (memory independent of duration), int8/int16 IQ output
  • Spec-7.1 validation harness: receiver-style acquisition gate (negative control)
  • CLI: run/scenario/show with presets; Forgejo CI on py3.12 + 3.14

  Known limitations

  • Modernized signals (L1C/L2C/L5, Galileo, B1C/B2a/B3I, GLONASS CDMA) registered but
    generators land in v1.1 (Tier 2)
  • GUI ships as a skeleton; wiring steps 013/014 pending
  • Navigation messages are placeholders (zeros/random bits)
  • CI e2e job currently red due to a CI backend issue (local e2e smoke passes:
    14/14 signals recovered, SHA256SUMS attached)

  E2E reference artifacts (seed 2026, reproducible bit-for-bit)

  • gps_l1.i16 (8x C/A), glonass_l1.i16 (4x L1OF), beidou_b1i.i16 (2x B1I)
  • sidecar scenario JSONs with drawn channels + SHA256SUMS

  Legal: file/baseband output only. Radiating GNSS-like signals requires a
  license; do not use to spoof receivers.

  Downloads

  • Source code (ZIP)
    0 downloads
  • Source code (TAR.GZ)
    0 downloads

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  • beidou_b1i.i16.scenario.json
    0 downloads · 2026-09-22 21:02:13 +02:00 · 1.8 KiB
  • glonass_l1.i16.scenario.json
    0 downloads · 2026-09-22 21:02:13 +02:00 · 2.9 KiB
  • gps_l1.i16.scenario.json
    0 downloads · 2026-09-22 21:02:13 +02:00 · 5.2 KiB
  • SHA256SUMS
    0 downloads · 2026-09-22 21:02:14 +02:00 · 580 B