Method for accurately obtaining star image sidereal time
A star map, accurate technology, applied in the aerospace field, can solve inaccurate problems, achieve the effects of avoiding inaccuracy, improving locking accuracy, and broadening the method and application range
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[0013] Below in conjunction with embodiment and accompanying drawing, the present invention will be described in further detail:
[0014] Star map: a set of data sent by the APS star sensor and received by the data acquisition unit alone;
[0015] Star time: the time information on the single machine of the data acquisition unit, which is composed of whole second star time and microsecond star time;
[0016] Star map star time: identifies the time information when the star map is received, which is composed of star map full second star time and star map microsecond star time;
[0017] Time calibration: There are multiple stand-alone devices on the satellite. In order to keep the time consistent, one system broadcasts the current star time, and other devices receive it and synchronize the star time;
[0018] Whole second star time register: store the current whole second star time information of the data acquisition unit stand-alone, 32 bits;
[0019] Microsecond satellite ti...
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