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在InSAR数据处理过程中,基线参数是影响干涉处理结果的重要因素。卫星编队InSAR系统中基线值不断变化,需要一种可靠的方法精确测定基线参数。基线定标是获取高精度基线参数的重要手段之一,其方法是通过已知的地面定标点的坐标,反向求解基线长度、基线倾角、轨道高度等参数。在对基线定标基本内容分析的基础上,通过仿真数据来验证定标点布设方案的可行性,为制定更加合理的基线定标方案提供参考。
In InSAR data processing, the baseline parameters are important factors that influence the result of interference processing. Baseline values are constantly changing in the satellite formation InSAR system, and a reliable method is needed to accurately measure baseline parameters. Baseline calibration is one of the most important ways to obtain high-precision baseline parameters by inversely solving the parameters such as baseline length, baseline dip angle and orbit height through the known coordinates of ground calibration points. Based on the analysis of the basic content of baseline calibration, the feasibility of calibration plan layout is verified by simulation data, which provides a reference for developing a more reasonable baseline calibration plan.