satTRAC USB Application – Specsheet

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Software Specifications

The satTRAC Modem/BBU provides telemetry, ranging, and commanding on a next-gen software radio platform consisting of a high-availability commercial off-the-shelf server, a high-performance signal converter, and one or more software applications.

The tables below summarize the specifications for the Universal S-Band (USB) application. Please refer to the satTRAC top-level data sheet for an overview of the innovative capabilities of satTRAC. Refer to the hardware data sheet for a summary of the signal converter specifications.

This application supports STDN USB Satellites.

USB Command (Transmit) Specification
Modulation BPSK/PM
Symbol Rate 250 bps; 1, 2, 4, and 8 ksps
Modulation Index 0.0 to 3.0 radians
Number of Subcarriers 1
Subcarrier Frequency 4 to 32 kHz
Command Data Input Network, Serial, GUI, or Internal BERT

USB Telemetry Test (Transmit) Specification
Modulation BPSK/PM, PCM/PM
Symbol Rate 250 to 500,000 sps
Modulation Index 0.0 to 3.0 radians
Number of Subcarriers 1 2
Subcarrier Frequency 1 8 to 4000 kHz
Convolutional Encoding Rate 1/2; K=7
Reed-Solomon Encoding (255,223)
Reed-Solomon Interleave 0 to 8 frames
PCM Coding NRZ-L/M/S, BIΦ-L/M/S
Data Input Network, Serial, File, GUI, or Internal BERT

USB Command Echo (Receive) Specification
Modulation BPSK/PM
Symbol Rate 250 bps; 1, 2, 4, and 8 ksps
Number of Subcarriers 1
Subcarrier Frequency 4 to 32 kHz
Command Echo Data Output Network or Internal BERT

USB Telemetry (Receive) Specification
Modulation BPSK/PM, PCM/PM
Symbol Rate 250 to 500,000 sps
Number of Subcarriers 1 2
Subcarrier Frequency 1 8 to 4000 kHz
Acquisition Frequency Range +/- 200 kHz with Aided PLL
Carrier Acquisition Bandwidth Fully Programmable per Symbol Rate
Symbol Acquisition Bandwidth Fully Programmable per Symbol Rate
Viterbi Decoding Rate 1/2; K=7
Reed-Solomon Decoding (255,223)
Reed-Solomon Interleave 0 to 8 frames
PCM Decoding NRZ-L/M/S, BIΦ-L/M/S
Implementation Loss < 1 dB
Telemetry Data Output Network, Serial, or Internal BERT

USB Tone Ranging Specification
Tone Frequency 1000 to 500,000 Hz
Multiple Tone Sets ESA, ESA-Like, USB or User
Determined
PM Mod Indices 0.0 to 3.0 radians
Integration Time and Relative Tone
Power
Fully Programmable
Min and Max Delay Fully Programmable
Implementation Loss < 0.5 dB

1 Not Applicable for PCM/PM Modulation

  • Built-In Software Capabilities - Each satTRAC application includes an integrated full-time Spectrum Analyzer, Oscilloscope, editable GUIs to streamline operations, Automated Test Script Runner and secure Linux operating system.
  • Optional Software Features - satTRAC’s ever-increasing list of optional integrated capabilities include: Data Recorder/Reproducer, Front End Processor (FEP), Network Gateway, Channel Emulation, and custom security policies.