System Design and Analysis for Improving Geometric Accuracy of High-Resolution Optical Remote Sensing Satellite Image.

At the present, how to improve the geometric accuracy optical remote sensing satellite image in China is getting more and more attention. Starting with the key geometric elements affeting the imaging quality--interior and exterior orientation elements, the ground geometric processing of the spaceborne optical image is introduced in this paper. Then by combining the development and manufacture, ground measurement trials and on-board calibration results of multiple optical satellites, the satellite-ground link factors affecting the geometric accuracy of both high-resolution optical remote sensing satellites and observation satellites with multiple linear arrays are compared and analyzed in detail. Based on the summed effect factors, the key constraints in system design and ground processing are accordingly pointed out. Finally, how to improve the geometric accuracy of high-resolution optical image is discussed by implementing specific system designs and means in the satellite development to cooperate with the ground processing. [ABSTRACT FROM AUTHOR]