Satellite Communications Modems

satTRAC Modems provide RF conversion and modem processing for TT&C and Payload links with support for all commonly used frequencies and waveforms.

satTRAC Modems offer extensive configurability, resiliency, and security; they are compatibility tested with most GEO spacecraft buses and LEO smallsat radios.

An ethernet-attached RF digitizer connects to the modem’s software application running on commercial servers.

Introducing the satTRAC wave:IQ Wideband Digitizer

The AMERGINT wave:IQ wideband digitizer is the solution of choice when:

» the mission link’s bandwidth requirement is greater than 100 MHz;

» multiple channels are required;

» the instantaneous dynamic range requirement is less than 75 dB.

  • Digitizer technology conditions, filters, downconverts, samples, and decimates to a digitized IF over Ethernet
  • The modem’s intelligence is the satTRAC App software that performs all demodulation, modulation, and ranging computations
  • TRL 9, proven in both factory compatibility tests and on-orbit operations
  • 5 Mbps Commanding Uplink
    10 Mbps Telemetry Downlink
    180 Mbps Payload Downlink
  • Server or Cloud Hosted
  • Custom Configurations
RF Digitization
C-Band
K-Band
Ka-Band
L-Band
S-Band (2.1 – 2.45 GHz)
X-Band
Protocols
TCP/UDP
CCSDS
Space Link Extension (SLE)
COP-1
HDLC
Serial PCM, Ternary, Di-Bit
Telemetry Waveforms
Subcarrier BPSK/PM
Direct PCM/PM
BPSK, QPSK, SQPSK, UAQPSK
SOQPSK, GMSK
SBW Mode 1 and Mode 2
Command Waveforms
FSK/AM (SGLS)
BPSK
PCM/PM
Subcarrier BPSK/PM
Subcarrier BPSK/FM
SBW Mode 1 and Mode 2
Satellite Ranging
PRN (SGLS)
Tone (SDIVN, USB, and ESA)
Channel Emulation
Time Delay and Doppler
Path Loss, Fading, Noise

 

Digital IF and Software Modems
A Really Basic Intro to Satellite Links (Modems)