The integration of radar interference is an effective technical path to optimize radio frequency resources and realize directional interference.Radar interference integrated waveform design is a hot spot in radar interference integrated research.This paper presents an radar interference integrated waveform based on Zadoff-Chu sequence and orthogonal frequency division multiplexing(OFDM)architecture,and studies the waveform design and processing methods.The waveform uses OFDM as the modulation mode and time-frequency division multiplexing as the basic architecture.The frequency domain subcarriers are reasonably allocated and modulated through Zadoff-Chu and Mersenne-Twister sequences to achieve the integration of detection and interference functions.In signal processing,the first step is to separate the time and frequency of interference detection,and the second step is to conduct pulse compression and coherent processing,so as to achieve ranging and velocity measurement.Theoretical analysis and simulation test show that the proposed waveform has the advantages of high ratio of main lobe to side lobe of pulse compression,strong Doppler tolerance,flexible frequency alignment and strong interference randomness.
关键词
雷达干扰一体化/正交频分复用/Zadoff-Chu序列/Mersenne-Twister序列
Key words
radar interference integrated/orthogonal frequency division multiplexing(OFDM)/Zadoff-Chu sequence/Mersenne-Twister sequence
维普
万方数据