Realization Of LPI Radar Signal Processing Arithmetic

With the development of electron oppositional technology, the capability of low intercept has been a necessary characteristic of radar.LPI radar makes use of all kinds of technology to avoid to be intercepted by scout .The paper chooses DSP to realize signal processing of LPI radar, because of its high powered ability in signal processing.Based on the relevant research result,the paper first introducts LPI radar technology,analyses the characteristic of LFMCW signal, then deducts basic connection formula of LFMCW radar,introduces two dimension FFT theory in LFMCW radar singal processing, puts forward improved two dimension FFT theory,and compares their performance.The test adopts improved two dimension FFT, realizes the theory of digital signal processing based on General signal processing board and optimizes data processing, storage and communicate in design. The paper introduces realization of hardware and software program of LFMCW radar experiment system in detail.The test results indicate that the signal processing system is coincident with the radar system's demand in function. And the main parameters gained by test reach the radar system's design demand, the system achieves processing in real time.