The Phase Statistical Characteristic of InSAR Image at the Isolated Point

摘要：

Current researches on the phase of interferometric Synthetic Aperture Radar (abbreviated as InSAR) images are restricted to the homogeneous scene with spatially constant backscatter coefficients. But in reality, there are many unknown targets or scalers with high backscatter coefficients in the ground scene, which produce several bright spots (called isolated points) in the SAR image. The phase statistical characteristic of interferogram at the isolated point is not available recently. Based on the InSAR system, the phase distribution characteristic of SAR image at the isolated point is analyzed. Furthermore, the interferometric phase probability density function at the isolated point is deduced and the phase statistical characteristic at the isolated point is analyzed in theory which is confirmed by the simulations. Finally the conclusion is obtained that the existence of isolated point can improve the interferometric phase estimation precision which establishes the theoretic foundation for calibrating the InSAR system with the interferometric phase at the scaler.

关键词： interferometric synthetic aperture radar phase statistics isolated point phase probability density function

作者: Zhu Lingfeng Xu Huaping

作者单位: School of Electronic and Information Engineering, Beijing University of Aeronautics &Astronautics, Beijing, P.R.China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 2059-2062

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）