Next-generation avionics systems will need to incorporate extensive integration, including the Communication, Navigation, and Identification (CNI) functions. An important element in such a highly integrated CNI system is a set of programmable preprocessors, each of which can process baseband outputs from a receiver to perform real-time signal dependent processing, such as matched filtering, PN despreading, code and carrier tracking, phase rotation, correlation, convolution, pulse shape discrimination, threshold crossing or time-of-arrival detection, demodulation (pulse position demodulatin, DPSK, etc.) message formatting, and on-line status reporting. Control of the total integrated CNI system is characterized by a distributed-control architecture, wherein the execution times range from seconds at the data processor level down to a few nanoseconds at the preprocessor level. Any candidate control architecture for the preprocessors must support reprogrammability, flexibility in event scheduling (including manipulation of event lists to add, insert, or drop basic events), and testability, while fully meeting the requirements of each CNI function. This paper describes a distributed-control architecture for a generic CNI preprocessor that meets the above requirements.
Distributed control architecture for CNI preprocessors
Verteilte Steuerungsarchitektur fuer CNI (Kommunikations, Navigations, Idenfifikations)-Prozessoren
1987
5 Seiten, 4 Bilder, 3 Quellen
Conference paper
English
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