由于二相编码序列的周期自相关和非周期自相关函数具有低的时间旁瓣，因此广泛应用于雷达信号中。降低偏码旁瓣的主要途径包括编码优选和旁瓣抑制，通过选择合适的编码及接收滤波器，可以完全消除旁瓣，这样的编码称为理想编码，它包括理想周期／奇周期序列和互补序列，本文综述了理想二相编码的研究历史，现状及可能的发展方向。

In radar applications,binary phase coded sequences are used with the property that their periodic or aperiodic autocorrelation function has an impulse-like form.There are two ways in reducing the sidelobes of the codes:selecting codes and sidelobe suppression.All the sidelobes could be entirely suppressed given specified codes and corresponding filters. The codes which have no sidelobes are called perfect codes.In this work perfect/odd-perfect periodical sequences and complementary sequences are included.This paper present a survey of recent result of sidelobe reduction.The future of sidelobe reduction is also predicted.

TN911.21 TN957.51

“九五”国防科技预研基金项目