一种优化编码信号距离副瓣的快速算法  

A Fast Algorithm for Optimizing the Range Sidelobe of Coded Signal

作　　者：张磊 曹文杰 完诚 范宽 ZHANG Lei;CAO Wen-jie;WAN Cheng;FAN Kuan(The 8th Research Academy of CSSC,Yangzhou 225101,China)

机构地区：[1]中国船舶集团有限公司第八研究院,江苏扬州225101

出　　处：《舰船电子对抗》2022年第4期75-79,共5页Shipboard Electronic Countermeasure

摘　　要：对多相编码信号(以Frank码为例)以积分旁瓣电平最小化原则进行优化,采用基于快速傅里叶变换(FFT)的快速循环算法求得局部最优解,分析对比了优化前后波形的距离副瓣变化情况,仿真了在不同门限下不同码长波形优化后的品质因子变化情况,对采用FFT和不采用FFT的算法进行效率对比,最后针对量化效应进行了仿真对比,得到了较为合适的量化位数。This paper optimizes the multi-phase coded signal(taking Frank code as an example)based on the principle of integral sidelobe level minimization,uses a fast cyclic algorithm based on fast Fourier tranform(FFT)to obtain the local optimal solution,analyzes and compares the distance sidelobe change of the waveform before and after optimization,simulates the change of the quality factor after waveform optimization with different code lengths under different thresholds,compares the efficiency of the algorithm with FFT and without FFT,finally simulatively compares the quantization effect,obtains more appropriate quantization figure.

关 键 词：波形设计 循环算法 距离旁瓣 

分 类 号：TN957[电子电信—信号与信息处理]