Abstract
Through integrating three- line arrays sensor characteristics of ZY- 3 satellite,using ancillary RPC files to conduct orientation,detecting the system error of RPC,and analyzing the strengths and weaknesses of four adjustable models defined in the domain of image coordinate,the authors deduced in detail the model of block adjustment for ZY- 3 satellite images based on RFM. The ZY- 3 stereo pair in Laizhou was selected to test the proposed method. A comparison with the direct spatial forward intersection shows that the proposed method can not only eliminate the RPC system error of ZY- 3 images but also greatly improve the image positioning accuracy.
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