针对PGPR回波中直达波的特性，尝试用二维滤波、模板滤波和水平高通滤波去除PGPR直达波并分析各个方法的利弊。

According to characteristic of direct wave in PGPR echo, 2d filtering, matrix filtering and horizontal high pass filtering are tried to remove direct wave in PGPR echo.

youdao

针对PGPR回波中直达波的特性，尝试用二维滤波、模板滤波和水平高通滤波去除PGPR直达波并分析各个方法的利弊。

According to characteristic of direct wave in PGPR echo, 2d filtering, matrix filtering and horizontal high pass filtering are tried to remove direct wave in PGPR echo.

youdao