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星敏感器是一种通过观测恒星位置,直接提供运载体在惯性空间中三轴绝对姿态的光电仪器。星图处理是星敏感器的重要工作内容之一,关系到后续星图识别的正确进行。处理方法需要能够有效地降低噪声,抑制背景,并正确提取出图像中的恒星目标。从分析星敏感器实际获取的星图特性入手,提出了相对应的图像处理算法。最后,进行实际测星试验,验证了星图处理算法的正确性和有效性。
The star sensor is a photoelectric instrument that directly provides the triaxial absolute attitude of the carrier in the inertial space by observing the position of the star. Star map processing is an important part of the work of the star sensor, related to the success of the subsequent star map recognition. Processing methods need to be able to effectively reduce the noise, suppress the background, and correctly extract the stars in the image of the target. Starting from the analysis of the star image acquired by star sensor, the corresponding image processing algorithm is proposed. Finally, the actual star test is carried out to verify the correctness and effectiveness of the star graph processing algorithm.