The Research Of Radar Signal Sorting Algorithm In Complicated Environment

Radar signal sorting is a key area of electronic warfare, signal sorting capacity to determine whether the radar reconnaissance system to adapt to modern electronic warfare environment. Therefore, improving the detection signal sorting system capacity, especially in the dense and complex signal, pulse the case of the larger loss rate for real-time sorting and identification, it is very important.This paper studies the environment of modern electronic warfare radar signal sorting, first introduced the study of radar signal sorting and significance of the background and current situation of research and development at home and abroad. And then introduces the radar signal sorting parameters and measurement accuracy, and then describes the main radar signal sorting method and sorting system composition. Focus on the unknown radar signal sorting process, including pre-sorting and radar signal separation of two main parts, pre-sorting algorithm of DOA, PW, RF combined sorting, using a dynamic clustering method, the specific algorithm is: Improved K-means clustering algorithm. Biggest advantages are:no prior division of storage space, not the number of pre-set categories, which fits well with the modern electronic warfare and radar emitter pulse density unknown number of unknown characteristics. Sorting is based on the PRI primary sorting, correlation function are studied, CDIF, SDIF, PRI transform, modified PRI transform, plane transformation. Another way for the correlation function of harmonic problems, CDIF and SDIF strategy used to avoid, PRI transform using suppression strategy, made two o'clock on the PRI transform Fixed:use of variable time point, the use of overlap in the PRI case. To adapt the estimated PRI jitter, simulation results show that 10% of the jitter, pulse rate of 20% loss, the estimated results are basically correct. Subsequent identification of sequence retrieval and varied.Based on the work in the above proposed program of integrated sorting, program in the following order:the matching and less known radiation sources, the remaining burst cluster, the SDIF for each type of separation, not separation, and the modified PRI transform, the type of pulse identification, conventional, jitter, or mixed. Simulation results show that the comprehensive program of separation and sorting of the parameters in the basic accuracy.