T400CS Channel Simulator
The RT Logic T400CS Channel Simulator is a sophisticated, yet easy-to-use, economical communications link simulator. The T400CS emulates key RF channel propagation path characteristics including range delay, Doppler, range attenuation, and fading. All characteristics are implemented in a smooth and phase-continuous manner. The T400CS is equipped with IF or RF inputs/outputs for the standard SATCOM frequency bands (C, L, S, X, and Ku). Use of the Channel Simulator requires no knowledge of the signal waveform(s).
The T400CS emulates channel effects for test and training applications, without using expensive satellite transponder bandwidth. The T400CS enables accurate and repeatable testing of modern communications equipment and algorithms that rely on particular terminal-to-satellite and/or satellite-to-terminal propagation characteristics for correct operation. A problematic propagation path can be constructed, for example, then used repetitively for system-level and component-level analysis and test. Furthermore, expected link condition extremes are easily emulated in a repeatable and consistent way to enable performance verification and worst-case evaluation of modems and communication equipment.
Leveraging Internet Protocol Networks to Transport Multi-Rate Serial Data Streams
As the rates and numbers of serial telemetry data streams increase, the cost of timely, efficient, and robust distribution of those streams increases faster. Without alternatives to traditional point-to-point serial distribution, the complexity of the infrastructure will soon overwhelm potential benefits of the increased stream counts and rates. Utilization of multiplexing algorithms in FPGA, coupled with universally available IP switching technology, provides a low-latency, time-data correlated multi-stream distribution solution. This implementation has yielded zero error IP transport and regeneration of multiple serial streams, maintaining stream to stream skew of less than 10 nsec, with end-to-end latency contribution of less than 15 msec. Adoption of this technique as a drop-in solution can greatly reduce the costs and complexities of maintaining pace with the changing serial telemetry community.