A Processing Method of High-Resolution Optical Satellite Point Target Imaging Orbit Measurement Data
With the rapid development of satellite technolo-gy,optical remote sensing satellites have the capability to im-age multiple point targets within a single orbital arc. For opti-cal remote sensing satellites,high precision geometric posi-tioning of images is generally achieved by constructing a tight geometric imaging model,which requires the acquisition of or-bital data corresponding to each imaging row. However,when satellites image point targets,insufficient orbital obser-vations make it difficult to obtain orbital data for each imaging row. This paper proposes a single-point orbit data processing method based on the SGP4 model,which generates TLE (Two-Line Element) from the position velocity of the satel-lite combined with the SGP4 (simplified general perturba-tions) model,so as to provide orbit data for each imaging line and further complete the geometric positioning of the image. The experimental results show that the method has high accu-racy of orbit processing,reliable geometric positioning re-sults,and the accuracy is basically comparable to the geomet-ric positioning accuracy of standard image products,which is of some significance for the image processing of optical remote sensing satellites. In addition,the experiments using the simu-lated orbit data generated by STK software show that the method of this paper has relatively high accuracy of data pro-cessing for satellites with moderate orbit inclination.
orbital data processingtwo-line elementsorbit inclination
NETL
NSTL
万方数据
