在外场用已知半球反射率的靶板作为标准靶板，反演测定目标靶板激光雷达散射截面和半球反射率。
Using a plate whose hemisphere reflectivity is known as a standard plate, the lidar scattering cross section (LRCS) and hemisphere reflectivity of a target plate are measured inversely.
UWB雷达可以穿透墙壁、天花板和地板，而其他类型的无线电信号会被这些东西挡住或反射。
UWB radar can see right through walls, ceilings and floors that would block or reflect other types of radio signals.
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