Moon shadow occlusion estimation and satellite autonomous management method based on visual circle

A self-management and satellite technology, which is applied in the direction of artificial satellites, space navigation equipment, space navigation vehicles, etc., can solve the problems of no moon shadow occlusion ratio calculation, the inability to accurately predict the impact of moon shadow on satellite energy supply, etc., to achieve moon shadow Effects of occlusion ratio calculation, simplified calculation, fast calculation method

Active Publication Date: 2020-06-02
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0004] At present, only the time of the umbra and penumbra of the moon shadow is calculated in the calculation of the satellite moon shadow, and the occlusion ratio of the moon shadow is not calculated, so that it is impossible to accurately predict the impact of the moon shadow on the energy supply of the satellite

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  • Moon shadow occlusion estimation and satellite autonomous management method based on visual circle
  • Moon shadow occlusion estimation and satellite autonomous management method based on visual circle
  • Moon shadow occlusion estimation and satellite autonomous management method based on visual circle

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Embodiment

[0062] Step 1. Measure the moon-satellite-sun angle θ ms , The apparent radius α of the sun seen from the satellite s and the apparent radius α of the moon seen from the satellite m ;

[0063] Step 2. The satellite is in the penumbra area of ​​the moon shadow, and the moon shadow occlusion ratio η is calculated; the algorithm is calculated and matched through the in-orbit data of a certain satellite, and the diagnostic method based on the calculation of the visual full moon shadow occlusion ratio is verified.

[0064] The magnitude of the output current of the satellite solar panel is proportional to the power of the sunlight received by the solar panel. When the moon covers the sun, the moon shadow occlusion ratio is inversely proportional to the power that the satellite can receive. The output current I of the solar panel can be used Calculate the actual moon shadow occlusion ratio η actual of the satellite. Calculated as follows,

[0065] ηactual=1-I / I 0

[0066] wher...

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Abstract

The invention relates to a moon shadow occlusion estimation and satellite autonomous management method based on a visual circle, and belongs to the technical field of spacecraft on-orbit operation autonomous management and diagnosis. The method comprises the steps of: 1, measuring a moon-satellite-sun angle, an apparent radius of the sun seen from a satellite and an apparent radius of the moon seen from the satellite; 2, respectively calculating moon shadow occlusion ratios of the satellite in a moon shadow umbra region, a moon shadow penumbra region and a moon shadow pseudo-umbra region; 3, calculating a storage battery discharge ampere-hour number in the moon shadow period; 4, measuring a storage battery rated capacity CP, subjecting the storage battery discharge ampere-hour number CD and the storage battery rated capacity CP to comparison judgment, according to a judgment result, not taking action, or reducing the satellite discharge capacity. According to the method, the influenceof the moon shadow on satellite energy supply can be quantitatively estimated through a calculation result. The effectiveness and accuracy of the algorithm are verified through actual on-orbit data.

Description

technical field [0001] The invention belongs to the technical field of on-orbit autonomous management and diagnosis of spacecraft, and relates to a method for moon shadow occlusion estimation and satellite autonomous management based on a visualized circle. Background technique [0002] Moon shadow is an important event in satellite on-orbit management. With the reduction of redundancy in satellite power supply design, moon shadow has an increasing impact on satellite energy supply. Especially during the earth shadow season of satellites in synchronous orbits, long-term moon shadows will cause excessive battery discharge. If the battery storage is insufficient, it will lead to over-discharge of the battery, and even affect the safety of the entire satellite power supply. The difference between the moon shadow and the earth shadow is that the penumbra of the moon shadow is very long. During the moon shadow period, the solar panels have a certain output current. The impact of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/10B64G1/22B64G1/42B64G1/44
CPCB64G1/10B64G1/22B64G1/42B64G1/44
Inventor 戴雪扬张香燕王大轶高谨博李志强周进锋
Owner BEIJING INST OF SPACECRAFT SYST ENG
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