The Technic And Application Of InSAR

The technic of Synthetic Aperture Radar(for short, SAR)is a new way of remote sensing. It had a very fast development in recent 20 years, now, it can not be sbsense in remote sensing field. Along with its development and perfect, The technic of SAR had succeed in geography, ocean, survey, entironment, agriculture, forest, weather, military affairs etc.This lesson is a particular intro about the imaging elements of the technic of SAR. The Radar of side-glance imaging send microwave pulse,and receive the back-direction dispersion of the Radar wave bundle which come from the object, it makes image base on the intension of the wave. A small antenna moves forward in a beeline to improve the image sight, as it moves, it sends microwave and receives its back single and keeps its shake swing and phase.when the antenna move about "L", The image of the object on the earth can be gained after dealing with the back single. So, a larger aperture can be composed, and we obtain a good purpose of increasing the length of the antenna,and we obtain a better Radar image on the orientation. Subsequently, we particularly introduce the principle of interference surveying,discuss the processing of data of SAR, including matching images, how to produce interference pattern, sieving wave, how to clear up the result of the flat effect, how to solve the binding phase. In chapter 4, we discussed the baseline. In the last chpter of this lesson, we introduced the apply of the technic of InSAR.