基于小波变换的多目标模糊分辨

Ambiguity Resolution of Multiple Targets Using Wavelet Transform

硬件距离门与中国的余数定理是常用的多目标模糊分辨算法 ,但这种处理系统硬件比较复杂 ,并且在单一PRF上较小的距离误差也可能导致很大的测距偏差。讨论了利用小波变换来估计多回波信号的时延信息 ,并利用聚集算法解多目标的距离模糊 ,再利用最大似然法分辨不同目标的算法。最后给出了计算机仿真结果。

Range gates and the Chinese remainder theorem are usually used to resolve ambiguities of multiple targets.This system is complex in hardware structure,and a small range error on single PRF can cause a large error in the resolved range. This paper studies an algorithm: firstly, wavelet transform is used to estimate the arrival time of multiple echo signal; then the range ambiguities of multiple targets are resolved by a clustering algorithm, and the different targets are resolved with the maximum likelihood technique. Finally, the paper gives out the simulation results by computer.