HDRM HIGH DATA RATE MODEM OVERVIEW: The HDRM is a high-rate multi- mission satellite data modem and simulation system that supports both CCSDS (for Conventional and Advanced Orbiting Systems) and TDM (Time-Division Multiplexed) formats. The HDRM performs data reception, ingest, processing, distribution and archiving functions at rates up to 1.5 Gbps. It is most commonly deployed within a satellite ground station, but is also ideal for applications including satellite integration/test and aircraft data acquisition.

MODEM PERFORMANCE: Based on Avtec's proprietary software-defined radio algorithms, the HDRM's digital receiver operates within 1dB of theoretical receive performance. The receiver's low power performance far exceeds that of conventional analog alternatives; it can reliably acquire and track signals below 0 db Es/No. An industry-leading 10 MHz of Doppler tracking bandwidth contributes to the system's multi-mission flexibility, allowing the HDRM to track signals from aircraft in addition to transmissions from low-orbit and geostationary satellites.

HIGH-SPEED FRONT-END PROCESSING: The HDRM's integrated high speed front-end processor ingests the high-rate data stream output by the system's receiver, performing frame synchronization, derandomization, Low Density Parity Check (LDPC) and Turbo Product Code (TPC) Reed-Solomon error correction, CRC decoding, time tagging and network output to clients and Network Attached Storage (NAS) at rates up to 800 Mbps.