摘要
对常用于星载SAR影像正射纠正的R-D模型与共线模型的原理及各解算步骤中存在的共性与异性进行了分析,并利用实地布设的角反射实验数据对两种模型的解算结果进行了对比。分析表明,两种模型建立在不同的原理、假设基础之上,其内部相同物理参数的解算结果也有差异,但两个模型的精度输出基本一致。
For the two commonly used orho-rectification models in spaceborne SAR, which are collinearity model and range-Doppler （R-D） model, we proposed an analysis for the common and opposite characteristics existing in their principle and solving steps in sequence. Moreover, we made a comparison for the computation result based on the on-site experiment data obtained by corner reflectors as well. Experimental results illustrate that although the two models should not only be based on entirely different principles of hypothesis, but also own different computation results with the same internal physical parameters, the output accuracy of the two models are basically the same.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第9期1069-1073,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2009AA12Z139)
国家自然科学基金资助项目(40601058
40701108
40871191)
关键词
R-D模型
共线方程
SAR正射纠正
卫星轨道
range Doppler model
collinearity equation
SAR ortho-rectification
satellite ephemeris
