Author:
Liu Huixiang,Liu Yang,Xi Peili,Chen Jie,Yang Wei,Zeng Hongcheng
Abstract
Abstract
The atmosphere is a very important factor that affects the accuracy of X-band SAR image registration, and the ionosphere effect has the most intricate influence. In response to this problem, this paper introduces the mathematical model of ionospheric dispersion effect and scintillation effect. Then, echo simulation, imaging processing, and image registration are used to calculate the image offset caused by the ionosphere, which can determine whether the ionosphere effect needs to be compensated during image registration. Simulation experimental results show that in the X-band image registration, the dispersion effect needs to be compensated, and the impact of the scintillation effect can be ignored.
Subject
General Physics and Astronomy
Reference7 articles.
1. Ionospheric and tropospheric effects on synthetic aperture radar performance [J];Quegan;International Journal of Remote Sensing,1986
2. Ionospheric effects on synthetic aperture radar at 100 MHz to 2 GHz [J];Ishimaru;RadioScience,1999
3. On the application of phase screen models to the interpretation of ionospheric scintillation data [J];Rino;Radio Science,1982