适于雷达信号压缩的DCTGA研究

Research on DCTGA of Radar Signal Compression

对雷达回波信号进行压缩,可有效减少其传输带宽和节省其存储空间.应用贪婪算法思想,提出了基于离散余弦变换(DCT)的贪婪算法(DCTGA),并将其应用于雷达回波信号压缩.通过仿真,分析了线性DCT压缩与非线性DCTGA压缩的优缺点,并对DCTGA与DFTGA压缩性能进行了比较.结果表明,与其他压缩方法相比,DCTGA更适于雷达回波信号压缩.

Compressing radar echo signals can reduce their transmission bandwidth and save the memory space efficiently. The DCT-based greedy algorithm （DCTGA） was put forward and applied to compression of radar echo signals in terms of the principles of greedy algorithm. By simulation the pros and cons of linear DCT and nonlinear DCTGA compression algorithms were analyzed,and the compression performances of DFTGA and DCTGA compared. The simulation results show that DCTGA is preferable to compression of radar echo signals,compared with other compression methods.