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Satellite SDR Reception

Master 2 - Annual Project Pair (with Nagib) Since summer 2026 In progress

Fifth-year annual project (class 5SIJ), mentored by Geoffrey Lavigne: build a full chain to receive, track, demodulate and decode satellite signals, then evaluate the security posture of the link itself. The goal is not just to use existing tools end to end but to reimplement at least one decoding stage from scratch, to actually understand the protocol rather than trust a black box.

Target signal chain: antenna to security analysis Antenna VHF/UHF SDR RTL-SDR / HackRF Orbit tracking Doppler correction Demodulation planned Decoding CCSDS / LRPT - planned Security analysis clear vs protected - planned
Target chain. Antenna, SDR capture and orbit tracking with Doppler correction are the current focus; demodulation, protocol decoding (CCSDS/LRPT) and the clear-vs-protected security analysis (dashed) are the next milestones.

Scope

  • Reception: antenna and SDR hardware (RTL-SDR, HackRF) for capturing satellite downlinks.
  • Orbit tracking: pass prediction and Doppler shift correction so the receiver stays locked on a moving satellite.
  • Demodulation and decoding: targeting the CCSDS telemetry standard and LRPT satellite imagery, with at least one decoding stage reimplemented rather than relying entirely on existing tooling.
  • Security analysis: comparing the exposure of the link when transmitted in the clear versus protected, to draw conclusions on satellite communication security.

Status

Currently in the requirements/design phase: the subject proposal, state of the art and project specification have been validated. The actual reception and decoding chain is the next phase of work - this page will be updated as it progresses.

Tech stack

SDR RTL-SDR HackRF CCSDS LRPT GNU Radio Doppler correction