Space absolute orientation technology based on starlight observation
A spatial orientation and technical technology, applied in the direction of the combined navigator, etc., can solve the problems such as the decline of the reliability of the image sensing of the resolution tube, and achieve the effect of eliminating the initial condition error, improving the speed and accuracy, and improving the recognition effect.
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[0034] (1) Inter-satellite direction observation
[0035] When taking photos for observation, the prerequisite is to ensure that there are observable background stars in the field of view of the directional device, so that effective observations can be obtained. In the case of a certain field of view of the observation instrument, the number of observable stars is not only related to the distribution of stars in the sky, but also affected by the background sky light. If the background sky light is too strong, it is impossible to obtain effective image information of the target star. Mainly consider the influence of sunlight.
[0036] Suppose the shading angle of the photographic observation equipment is Θ, and when the angle θ between the satellite's inter-satellite direction and the sun direction is greater than Θ, the observation can be made. According to the field of view of the navigation star catalog and observation equipment, the number of background stars at the time of obs...
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