Application and FPGA implementation of wideband real-time spectrum analysis in spaceborne electronic reconnaissance

摘要

Because spaceborne electronic reconnaissance is restricted by limited aerospace-grade electronic devices, data processing speed, storage capacity, and downlink speed, traditional electronic reconnaissance satellite is difficult to realize real-time spectrum monitoring, signal detection and capture in wide band for long. So in this paper, two main wideband real-time spectrum analysis (RTSA) technology named digital phosphor technology (DPX) and frequency mask trigger (FMT) are introduced into spaceborne electronic reconnaissance. DPX technology implements digital phosphor spectrum accumulation and can effectively analyze and process various signals existed in the same period. FMM technology is a novel trigger data collection method. When certain signal features are known, according to frequency mask shape to trigger storing data, the efficiency of data storage can be effectively enhanced. The proposed spaceborne electronic reconnaissance scheme use aerospace-grade FPGA chips as the main processor, and some FPGA optimization algorithm is used in the implementation to improves process efficiency and reduce resources consumption.