RFM替代星载InSAR几何模型的方法

Geometric Model for RFM to Replace Spaceborne InSAR

尝试用RFM替代InSAR几何模型。建立了替代InSAR几何模型的RFM方程并给出了求解方法。分别用星载高分辨率SAR影像和普通SAR影像进行了试验,通过比较不同阶数的RFM模型的替代精度,验证了RFM模型替代InSAR严格模型的可行性与可靠性。结果表明,采用三阶带分母的RFM模型,星载高分辨率SAR影像的替代精度可达到万分之一波长,满足InSAR进行地形测绘的精度要求,有望应用于InSAR数据的并行计算与快速处理。

The paper tries to use the RFM to replace lnSAR geometric model and establish RFM equation and solving method for the alternative InSAR geometry model. Spaceborne high resolution SAR images and SAR images are tested to verify the feasibility and reli- ability of alternative InSAR strict model by comparing the different order of accuracy of RFM model. The results show that the denomi- nator of the third order of RFM model can reach the wave length of one ten thousandth in terms of alternative precision, which meets the accuracy requirements InSAR topographic mapping and is expected to be applied to the fast processing.