调频Costas编码信号成像算法研究  

Study of Imaging Algorithm for Costas Hopping Chirp Signal

作　　者：王良[1] 尚朝轩[1] 何强[1] 韩壮志[1] 

机构地区：[1]军械工程学院电子与光学工程系,河北石家庄050003

出　　处：《军械工程学院学报》2013年第3期58-63,共6页Journal of Ordnance Engineering College

摘　　要：结合Costas编码信号和线性调频信号进行波形设计，建模分析了这种信号的成像方法，从参数设置的角度研究了抑制距离像泄露和栅瓣效应的方法．根据采样频率的变化，研究了细化距离像的冗余问题，并通过距离像拼接算法实现所有距离单元成像，通过脉压阶段的加窗使距离单元的非均匀加权问题得到改善，对这种信号形式的抗干扰性能进行了仿真分析．The signal is designed combining Costas hopping with chirp signal, and imaging algorithm is analyzed. Restraining of image energy leaking and grating lobes are discussed with parameters setting. Based on the sampling frequency changes,the problems of refining image redundancies are discussed and the final image is achieved via imaging joining algorithm. By implementing cies are discussed and the final image is achieved via imaging joining algorithm. By implementing weighting windows, the image non-uniform weighting problem is improved,and the interference of this signal is analyzed via simulation.

关 键 词：COSTAS编码 脉冲调制 成像 抗干扰 

分 类 号：TN959[电子电信—信号与信息处理]