低截获概率雷达波形设计的一种方法

A Method of Waveform Design for Low Probability of Intercept Radars

本文基于低截获概率雷达(LPI—R)对波形的要求,提出了一种用于低截获概率雷达的二相编码脉冲压缩波形的设计方法,该方法是基于以相参积累特性作为码组的最终优化准则。应用该方法对130位左右的码形进行了优化,指出127是个较为理想的码长,在其它指标颇佳的条件下,当目标多卜勒频移f_α=0时,8个码子相参积累后的主副比为34,12(DB),16个(?)子相参积累后的主副比为37、22(DB),基本达到了实用要求,结果较为满意。

Based on the requirment to low probability of intercept (LPI) radars, this paper presents a new design meathod of biphase coded pulse compression signals.This meathod takes the coherent integration characteristi of codes as the direct optimization object and can be used in waveform desig of LPI-R. Biphase sequences with codelenth about 130 are optimized using this meahod and satisfactory results are obtaind. the results show that 127 is a idae codelenth under this codelenth, the coherent integration peak ratio of mainlobe to sidelobe of 8 codes and 16 codes is 34.12(ab) and 37.22 (db) respectively. when the doppler freqency Fd is zero.ln addition, the other characteristics of these code groups are pretty good, so they can be used in practice.