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开发了毫米波段固体组件毫米波高度表。研究了相对Ｕ波段垂直入射的地面后向散射特性对波束接收强度的影响，后向散射受地面凹凸、植被情况和波束入射角度等因素的综合影响。为根据散射系数直方图的分布函数和拍频掌握无线电高度表波束接收强度的变化，求出必要的特征量，取得野外试验数据。以散射系数作为高度数据的补充，利用模糊推理求出了山谷斜面的倾斜角，证明可以提高导航的测量精度。
Mm-band solid component millimeter-wave altimeter was developed. The effect of the backscattering characteristics of the vertical U-band incident on the received beam intensity is studied. The backscattering is affected by the surface roughness, the vegetation condition and the beam incident angle. Based on the distribution function of the scatter coefficient histogram and the change of the beat reception intensity of the beat of the radio altimeter, the necessary characteristic quantities are obtained to obtain the field test data. Taking the scattering coefficient as a complement to the height data, the slope angle of the valley slope was calculated by fuzzy reasoning, which proves that the navigation accuracy can be improved.