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基线是干涉合成孔径雷达系统中所特有的参数。基线长度的微小误差都可能引起地形高度较大的误差。根据基线投影方式的不同所形成的不同表达形式,分析了垂直基线与高度灵敏度以及高度模糊数的关系;分析了水平基线和垂直基线对地形高程精度的影响。并利用ERS数据进行了仿真分析。
The baseline is unique to interferometric synthetic aperture radar systems. Small errors in the length of the baseline can cause large terrain height errors. The relationship between vertical baseline and height sensitivity and height fuzzy number is analyzed based on the different expressions of different baseline projection modes. The effects of horizontal baseline and vertical baseline on terrain elevation accuracy are analyzed. The ERS data were used for simulation analysis.