基于DFT的雷达回波数据压缩非线性算法  

A Nonlinear Algorithm of Radar Echo Data Compression Based on DFT

作　　者：李平[1] 魏文斌[2] 

机构地区：[1]空军雷达学院研究生管理大队,武汉430019 [2]空军雷达学院空天基预警监视装备系,武汉430019

出　　处：《空军雷达学院学报》2009年第5期363-365,369,共4页Journal of Air Force Radar Academy

摘　　要：为了更加有效地减少雷达数据的传输带宽和节省数据的存储空间,根据雷达回波信号的特点,研究了基于频域的数据压缩算法.针对雷达回波变换域数据的特点,应用贪婪算法思想,提出了一种新的基于DFT的非线性压缩算法.仿真结果表明,把该方法应用到雷达信号数据压缩中,在保真度方面要优于传统线性的DFT压缩算法.In order to reduce the transmission bandwidth and save the memory space of radar data more effectively, the algorithms of frequency domain-based data compression were studied in terms of the features of radar echo signals. Aimed at the data characteristics in the radar echo transform domain, a new DFT-based nonlinear compression algorithm was put forward by means of the idea of greedy algorithm. The simulation results show that this nonlinear method used for the radar echo data compression is better than the traditional linear DFT-based compression algorithm.

关 键 词：贪婪算法 数据压缩 离散傅里叶变换 

分 类 号：TN95[电子电信—信号与信息处理]