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地形地物的回波信号特性影响着星载激光测高仪测量精度。对星载激光测高仪回波脉冲信号进行了理论分析,建立了地形地物数学物理模型,对不同地形地物的回波信号进行了数值模拟研究;在采用不同回波信号检测的情况下,分析了不同地形地物造成回波信号的变化所引起的测量误差。研究结果对保证星载激光测高仪测量精度具有重要的意义。
The echo signal characteristics of topography affect the accuracy of spaceborne laser altimeters. The echo pulse signal of satellite laser altimeter is analyzed theoretically. The mathematical model of terrain matter is established and the echo signals of different terrain objects are numerically simulated. In the case of using different echo signals , The measurement error caused by the change of echo signal caused by different topography is analyzed. The research results are of great significance to ensure the measurement accuracy of satellite laser altimeter.