| 摘要: |
| 采用标准匹配滤波器会使雷达的脉冲压缩处理在大目标附近的距离单元产生距离
旁瓣，从而遮蔽附近的小目标。针对这种情况提出的基于最大输出信噪比准则(MSN)的自适
应脉冲压缩实现了对旁瓣的自适应压缩。然而有些在役雷达系统不能在标准脉冲压缩之前获
得接收信号，或者不能更换当前脉冲压缩系统，这种算法不再适用。基于迭代思想和最大输
出信噪比准则提出的脉冲压缩修复处理，自适应地作用于匹配滤波后的输出信号，利用先验
目标信息实现对距离旁瓣和噪声的抑制。在推导的算法原理基础上给出了实现步骤，并对算
法
的适用性进行了仿真，结果表明对单、多目标算法能够实现有效脉冲压缩，对于多普勒失配
，
性能有所下降，但仍远优于匹配滤波，提高了雷达对小目标的检测能力。 |
| 关键词: 脉冲压缩 自适应处理 修复处理 最大信噪比 |
| DOI： |
|
| 基金项目: |
|
| Adaptive Pulse Compression Repair Processing via MSN Criteria |
| SHAO Jiang-yu,SHI Xing |
| (Southwest China Institute of Electronic Technology,Chengdu 610036, China) |
| Abstract: |
| Standard matched filter always makes radar pulse compression generate r
ang sidelobes in the vicinity of large targets which can result in the masking o
f smaller nearby targets. To solve this problem, adaptive pulse compression via
MSN is proposed to effectively suppress sidelobes. However, some in-service r
adar systems may not have access to the received signal prior to standard pulse
compression or may not be feasible to replace the current pulse-compression syst
em, this algorithm would not work. Adaptive pulse compression repair processing
via MSN criteria proposed in this paper adaptively operates on the output of the
standard matched filter and uses the apriori information to suppress sidelobes
and noise. Algorithm steps are given according to the principle and simulation s
hows this algorithm can effectively suppress sidelobes for single and multiple
targets, when Doppler mismatch is considered, performance degrades, but this al
gorithm still outperms matched filter,so that it can improve the ability to det
ect small targets. |
| Key words: pulse compression adaptive processing repair processing maximal signal to n
oise rate |
