At last , in the circumstances of a wide - band radar is used for target detection , the length of received signal is much longer than that of the transmitted pulse signal . because the traditional matched filter collects only a small part of the energy of received signal , it is not good for detection . the generalized matched filter is obtained by improving the traditional matched filter and can collect all energy of received signal , which is good for detection 最后,在宽带条件下,雷达发射脉冲信号,雷达的目标回波的时间长度要远远大于发射信号的时间长度,传统的匹配滤波只能收集一部分回波信号的能量,这对于检测电磁散射比较弱的目标是不利的,而广义匹配滤波对传统的匹配滤波进行改进,可以将目标回波的全部能量收集起来以提高检测性能。
