Low S Of Radar Signal Detection Technology

With the advent of the 21 st century, all countries in the world now pay more attention on the research and use for electronic warfare, to weaken, destroy the enemy the use of electronic equipment efficiency and safeguard their own electronic equipment function. Therefore, development is particularly important in the field of signal processing, it is only through signal processing to get effective information, to provide effective help for subsequent electronic countermeasures, which makes us obtain advantageous situation in the war.Signal processing fields an unavoidable problem is signal denoising filtering. Only try best to solved the problem, disturbed by the noise in the signal transmission process, will be as small as possible so, how to extracted the low SNR signal from all kinds of background noise has become one of the key. But the study found that when the signal reconnaissance, signal transmission will be a loss, decline, these problems make more difficult separated signal from noise signal. This paper analyses the related algorithm, chaos algorithm, wavelet analysis according to the inherent defects in the prior method is proposed for signal autocorrelation and non coherent accumulation with the test of low SNR signal detect method. And through simulation, Semi physical simulation, outfield experiments, to verify the feasibility of this detecting method, realization of the detection of negative SNR signal. Finally analysis the detection performance under several conditions, and has made the certain analysis in each different kind of environment, This method has practical engineering value.