High-Performance Satellite Communication Measurement and Control System
Product Introduction
This system is a high-performance measurement and control solution specifically designed for modern satellite communications, meeting stringent demands for high precision and reliability. It offers excellent flexibility and scalability to adapt to complex and variable communication environments.
The system's core function is to establish and maintain a stable communication link with spacecraft. It provides full support for S-band Telecommand (TC), Telemetry (TM), Ranging, and Ranging Rate Measurement (RRM) operations. Additionally, it handles uplink/downlink signal processing and level control for Ka-band High-Speed Data Links. The system supports multiple operational modes, including Direct Sequence Spread Spectrum (DSSS, both coherent and non-coherent), standard Unified S-Band (USB), integrated Telemetry-Tracking-and-Command (TT&C) and data transmission, and long/short code relay short messaging. Users can flexibly invoke different host computer software via the RF signal transceiver module to rapidly switch measurement and control protocols and configure parameters, enabling tasks such as telemetry demodulation, telecommand modulation, and ranging/ranging rate measurement processing. It also integrates a telemetry simulator to facilitate system verification and testing.
The system strictly adheres to the CCSDS (Consultative Committee for Space Data Systems) series of protocol standards, ensuring data format compatibility and system interoperability with international space projects.
Product Features:
1. Telemetry processing
- Telemetry Code Format: NRZ-L/M/S.
- Demodulation Scheme:Supports BPSK/QPSK/DQPSK/OQPSK/UQPSK; PCM-CDMA-BPSK; PCM-BPSK, with support for future upgrades.
- Telemetry Symbol Rate:Up to 600 kbps.
- Descrambling:Features descrambling capability; the primitive polynomial and initial phase are configurable.
- Bit Error Rate (BER) Statistics:Supports BER statistics; BER degradation ≤ 1 dB.
- Frame Length:Up to 32,000 bytes.
- Channel Decoding:Supports Viterbi decoding, R-S decoding, LDPC decoding compliant with CCSDS standards, and is expandable for other decoding methods.
2. Distance measurement and speed measurement
- Code Format:NRZ-L/M/S.
- Ranging Scheme:Supports pseudo-code ranging and ESA.
- Code Rate:1000 bps, compliant with non-coherent spread spectrum measurement standards.
- Channels:Supports single-channel or multi-channel (≥ 4 channels) ranging.
- Ranging Accuracy:Up to σR ≤ 1 m.
- Ranging Rate Accuracy:σṘ ≤ 2 cm/s.
3. Remote control generation
- Telecommand Code Format:NRZ-L/M/S.
- Modulation Scheme:Supports UQPSK, PCM-CDMA-BPSK, PCM-BPSK, with support for future upgrades.
- Telecommand Code Rate:Up to 1 Mbps. PN Code: 1.023 Mbps - 10.23 Mbps. Information Code: 0.5 kbps - 64 kbps.
- Spread Spectrum Code Rate Accuracy:< 0.01 chip.
- Channel Encoding:Supports convolutional encoding, R-S encoding, LDPC encoding compliant with CCSDS standards, and is expandable for other encoding methods.
- Commanding Mode:Supports local or remote command transmission.
4. Telemetry simulation
- Data Source:Preset file reading, telemetry playback (reading locally stored telemetry data files), network reception.
- Code Format:NRZ-L/M/S.
- Code Rate:Up to 10 Mbps. PN Code: 1.023 Mbps - 10.23 Mbps. Information Code: 0.5 kbps - 64 kbps.
- File Size:Maximum 32,768 bytes (preset file mode); maximum 500 MB (playback mode).
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