Method for processing information of APS sun sensor

Abstract

The information processing method of the APS sun sensor includes two calculation modes of capture and tracking. First, the image is input into the memory, and the initial center of mass is extracted. After the correctness is verified, the system switches to the tracking mode. After loading the image and capture mode data, adjust the number of windows involved in the calculation according to the input of the ground remote control parameters, calculate the center of mass of the sun in the window, and calculate the attitude angle using the result of the center of mass calculation. Calculate, and then judge the size of the attitude angle. If the attitude angle is large, it needs to compensate for the large angle. Finally, the sun sensor outputs the attitude angle after compensation. The invention has a strong attitude capture ability, and can still be successfully captured when part of the sun image spot moves out of the target surface, and can perform attitude angle compensation at large angles, and can adjust the amount of calculation, which improves the attitude angle at large angles Calculation accuracy, while improving the data refresh rate of the sensor.

Description

technical field [0001] The invention relates to an information processing method of an APS sun sensor, belonging to the field of attitude measurement and control. Background technique [0002] The sun sensor to give the sun orientation is an optical attitude sensor commonly used by various spacecraft. With the rapid advancement of imaging detection devices and processor technology, solar sensors have successively appeared 0-1 solar sensors, analog solar sensors, digital solar sensors, CCD (electromagnetic coupling device) solar sensors, and the latest products are currently For APS (Active Pixel Detector) sun sensor. [0003] The APS sun sensor is an imaging sun sensor. It uses the principle of pinhole imaging to form a sun image of a pinhole array. Through image processing technology, the array sun image is processed through image processing and attitude calculation to solve the sun azimuth, so it is fast, robust and accurate. The information processing algorithm belongs ...

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Problems solved by technology

[0004] Chinese Patent No. 200610103797.3, title: A high-precision APS sun sensor, this patent describes the whole sensor, which involves information processing, and its shortcoming is that it does not take into account that part of the sun image spot may move out of the target surface at a large angle situation, and there is no means of adjusting the amount of calculation for all centroids in the algorithm, and finally, the deformation of the sun image spot at a large angle is not processed

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