Modem / Baseband Units

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Modem / Baseband Unit

  • Signal Converters for RF and 70MHz
  • Digital IF over Ethernet
  • Software Apps for Waveform-Specific Processing

Satellite Telemetry, Ranging, and Commanding

satTRAC SL Modem and Server
satTRAC SL Modem and Server

Software Applications

Commercial Satellites

  • Commanding, Telemetry, and Ranging for commercial satellites.
  • No Export License Required.
  • GROUP1 supports FS-1300, LS-1300, GEOStar2, GEOStar3, and similar satellites.
  • GROUP2 supports Boeing-601, Boeing-702, Lockheed Martin-A2100, and similar satellites.
  • DIRECT1 supports direct carrier modulations (BPSK, QPSK, and SQPSK).

Group1 App Sheet   Group1 App Sheet  Group2 App Sheet   Group2 App Sheet  
 Direct1 App Sheet   Direct1 App Sheet   SatSim1 App Sheet SatSim1 App Sheet

SGLS

  • Filters, demodulates, bit syncs, and FEC decodes a SGLS telemetry downlink.
  • Ternary command uplink modulation (FSK/AM waveform) and echo checking.
  • High-fidelity PRN ranging generation and processing (range/range rate).

SGLS App Sheet SGLS App Sheet

USB

  • Filters, demodulates, bit syncs, and FEC decodes a USB telemetry downlink.
  • Binary command uplink modulation (BPSK/PM waveform) and echo checking.
  • Sequential tone ranging generation and processing (range/range rate).

USB App Sheet USB App Sheet

TDRS

  • Generates TDRS spread spectrum forward link with command data and ranging PN sequence.
  • Receives TDRS Mode 1 or Mode 2 return link despreading and demodulation of the data streams.
  • SNUG-compliant S-Band Single Access (SSA) and Multiple Access (MA), Data Group 1, User Codes.

TDRSS App Sheet TDRSS App Sheet

Channel Emulator

  • Accurately emulate the RF channel.
  • Time varying delay and Doppler emulates the effects of motion.
  • Time varying amplitude and phase emulates path loss, rain fades, scintillation and flat fading.
  • Includes noise to emulate receiver LNA noise floors.

Channel Emulator App Sheet Channel Emulator App Sheet

swdLab-GUI

Modem-Functions

Telemetry Waveforms
Subcarrier BPSK/PM
Direct PCM/PM
BPSK/QPSK/SQPSK,UAQPSK
SBW Mode 1 and Mode 2
Viterbi/Reed-Solomon

Command Waveforms
FSK/AM
Subcarrier BPSK/PM
Subcarrier BPSK/FM
SBW Mode 1 and Mode 2

Ranging
PRN (SGLS)
Tone (STDN/USB/ESA-like)

Customized Algorithms
Implemented in software



Digital Conversion


S-Band/L-Band and 70 MHz


Algorithms with Floating Point Precision


antenna