A RAIL CENTRAL DISPLACEMENT METHOD ABOUT GB-SAR

J. Peng, J. Cai, H. Yang
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
This paper presents a new method to correct rail errors of Ground Based Synthetic Aperture Radar (GB-SAR) in the discontinue mode. Generally, "light positioning" is performed to mark the GB-SAR position in the dis-continuous observation mode. Usually we assume there is no difference between the marked position and the real installation position. But in fact, it is hard to keep the GB-SAR positions of two campaigns the same, so repositioning errors can't be neglected. In order to solve this
more » ... to solve this problem, we propose an algorithm to correct the rail error after analyzing the GB-SAR rail error geometry. Results of the simulation experiment and the real experiment of a landslide in Lvliang, Shanxi, China, show the proposed method achieves an mm-level precision, enabling the D-GBSAR mode to be used in engineering projects.
doi:10.5194/isprsarchives-xli-b7-865-2016 fatcat:4rtajqywzvhvlkckvaovplddae