On-orbit noise autonomous restraint method for APS star sensor
A star sensor and noise technology, applied in instruments, measuring devices, astronomical navigation, etc., can solve problems such as complex operation, performance degradation of imaging chips, long-term cost, etc., to achieve sufficient noise, suppress and eliminate airspace noise, and autonomy high effect
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[0027] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0028] The APS star sensor is an important satellite attitude determination device. In order to improve the data update rate of the star sensor, the star sensor searches for the navigation star in the local sky based on the rough attitude information provided by the all-sky capture, and according to the attitude matrix and the navigation star The inertial vector and optical system parameters calculate the two-dimensional coordinates of the navigation star on the imaging chip in the field of view, and use this coordinate as the center to open up a 9×9 pixel forecast window, and then perform pixel traversal in this forecast window to extract The star point is finally matched and recognized according to the star point coordinates, and finally the attitude calculation is completed.
[0029] The realization principle of the present invention...
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