引用本文: 陈刚, 汤晓涛, 钱方明. 星载InSAR立体基线定标方法[J]. 武汉大学学报 ( 信息科学版), 2014, 39(1): 37-41.
CHEN Gang, TANG Xiaotao, QIAN Fangming. A Three-Dimensional Baseline Calibration Method of Spaceborne InSAR[J]. Geomatics and Information Science of Wuhan University, 2014, 39(1): 37-41.
 Citation: CHEN Gang, TANG Xiaotao, QIAN Fangming. A Three-Dimensional Baseline Calibration Method of Spaceborne InSAR[J]. Geomatics and Information Science of Wuhan University, 2014, 39(1): 37-41.

## A Three-Dimensional Baseline Calibration Method of Spaceborne InSAR

• 摘要: 在专用的星载InSAR系统中,基线矢量精度是影响地面高程精度的主要因素之一,对其进行定标能有效提高目定标位的精度。目前,基线定标方法多采用简化的二维平面模型,该模型忽略了顺轨基线分量,导致其定标精度不高。针对此模型存在的不足,提出了一种符合星载InSAR工作特点的立体基线模型,通过建立局部移动坐标系,简化定标参数,优化处理过程。仿真数据处理结果表明,该方法能完成高精度InSAR基线矢量定标,可为星载InSAR系统定标提供支撑。

Abstract: Accuracy of baseline vector is one of important factors that affect the accuracy of height inspaceborne InSAR.By calibrating the baseline vector can effectively improve target’s position accura-cy,now most baseline calibration methods adopt two-dimensional model.This model ignores along-track baseline,which decrease calibration accuracy.According to working theroy of spaceborne In-SAR,this paper presents a three-dimensional baseline model.By constructing the local moving coordi-nate system,the proposed method simplifies parameters and optimizes process in calibration.Resultsshow that the proposed method has practical value and can be used in the calibration of high accuracybaseline vector.

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