초록 ▼

An attitude angle sensor correcting apparatus for an artificial satellite of the present invention includes a satellite attitude estimator. The satellite attitude estimator reads geographical image data out of an image data memory, produces a GCP (Ground Control Point) position included in the image

An attitude angle sensor correcting apparatus for an artificial satellite of the present invention includes a satellite attitude estimator. The satellite attitude estimator reads geographical image data out of an image data memory, produces a GCP (Ground Control Point) position included in the image data by stereo image measurement, and then estimates the instantaneous satellite attitude angle on the basis of a relation between the measured GCP position and a true GCP position. An attitude angle sensor data corrector corrects measured attitude angle data with estimated satellite attitude data output from the satellite attitude estimator and corresponding in time to the measured attitude angle data. The attitude angle sensor data corrector outputs an estimated satellite attitude signal.

대표청구항 ▼

1. An attitude angle correcting apparatus for an artificial satellite, comprising:an attitude angle sensor data memory for storing a signal output from sensing means responsive to an attitude angle of the artificial satellite; an image data memory for storing geographical image data representative a

1. An attitude angle correcting apparatus for an artificial satellite, comprising:an attitude angle sensor data memory for storing a signal output from sensing means responsive to an attitude angle of the artificial satellite; an image data memory for storing geographical image data representative a same geographical area, where a (Ground Control Point) GCP is located, shot at a plurality of positions; a satellite attitude estimator for generating estimated attitude data of the artificial satellite on the basis of a difference between a true GCP value representative of a true position of the GCP and a measured GCP value produced by image measurement using said geographical image data stored in said image data memory; and an attitude angle sensor data corrector for estimating an attitude angle of the artificial satellite by using said estimated attitude data, and then correcting measured attitude angle data, which is read out of said attitude angle sensor data memory, with said attitude angle estimated to thereby generate an estimated attitude angle signal.