超宽带线性调频信号快速BP成像  

UWB LFMCW Radar Imaging Based on Dechirp Processing

作　　者：余洪涛[1] 张永顺[1] 朱丽莉[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《现代雷达》2005年第7期39-41,共3页Modern Radar

摘　　要：首先对超宽带线性调频信号进行脉冲压缩处理得到短脉冲信号,在详细阐述BP算法原理的基础上,利用此短脉冲信号推导其BP算法成像公式;然后将子孔径思想应用于BP算法,得到一种快速BP(FBP)算法;最后对BP算法和FBP算法的计算量进行理论分析,同时结合点目标和多点目标应用BP算法和FBP算法分别成像,给出两种算法成像所花费的时间,其结果证明了FBP算法的快速性和有效性。In this paper, the UWB chirp pulses are processed by pulse-compression and short pulses are abtained. Using them, the imaging formula is derived according to detailed explanation of the BP theory. Then by applying sub-aperture theory to the BP algorithm, a fast BP algorithm is developed. Finally the computation amount of BP and FBP algorithms are theoretically analyzed and at the same time spot target and multi-spot targets are imaged by applying these two algorithms and the time spent on imaging are obtained. The speediness and validity are verified by computed results.

关 键 词：超宽带 线性调频 BP算法 FBP算法 

分 类 号：TN911[电子电信—通信与信息系统]