基于去斜的步进频合成高分辨距离像新方法  

Dechirp-based method for synthesizing high resolution range profile(HRRP) via stepped-frequency waveforms

作　　者：金胜[1,2] 朱天林[2] 邓振淼[3] 杨文军[4] 

机构地区：[1]北京理工大学雷达技术研究所,北京100081 [2]北京跟踪与通信技术研究所,北京100094 [3]厦门大学信息科学与技术学院,福建厦门361005 [4]南京电子技术研究所,江苏南京210013

出　　处：《系统工程与电子技术》2012年第6期1126-1130,共5页Systems Engineering and Electronics

摘　　要：研究了一种基于子脉冲去斜的高分辨距离像合成新方法。首先,用本地参考信号对接收的步进频脉冲串信号进行去斜处理,然后把去斜之后的信号按顺序在时域上拼接起来得到宽带回波,最后按传统的处理方法得到目标的一维距离像和二维逆合成孔径雷达像。这种方法避免了传统时域拼接法的上采样、频移和相位补偿运算,减小了处理复杂度,易于工程应用。A novel method for synthesizing the high resolution range profile （HRRP） with respect to the stepped frequency waveforms, which is based on dechirp processing, is proposed. First, the received stepped- frequency pulses are dechirped by local reference signals. The wideband echoes are obtained by joining the dechirped pulses in order in time-domain. Finally, the 1-D HRRP and the 2-D inverse synthetic aperture radar （ISAR） images can be obtained according to the traditional processing. The up sampling, frequency shift and phase compensation operations are avoided with this new method, thus the processing complexity is reduced and this new method is easier to implement in radar systems.

关 键 词：步进频 高分辨距离像 去斜 逆合成孔径雷达 

分 类 号：TN958[电子电信—信号与信息处理]