宽带相关信号的参数估计问题

Estimation of the parameters of wide band correlative signals

在反隐身、浅层地下目标勘探、反射地震勘探等领域越来越多地运用宽带或超宽带信号的雷达体制．由于信号传播色散的影响，经典的相关估计方法不能有效地估计目标信号的时延等参数．针对这种情况，该文给出了宽带相关信号参数的估计模型，在已知源信号情况下提出了估计的方法，并对估计器的性能进行了详细的理论分析．最后，应用这种方法分析了模拟和实测的雷达数据，结果表明，这种方法可以精确、有效地估计时延等参数．

This paper presents a novel model for the estimation of the parameters of the wide band correlative signals. Under the assumption of a known source signal, some novel methods are derived for the evaluations of the unknown parameters and the performance of such estimators are analyzed. Simulation is conducted to test the validity of the methods and some field test data of the wide band radar are processed. The results show that the techniques can deal with such problems accurately and efficiently.