An area coverage push-broom constellation and its construction method
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A regional coverage and constellation technology, applied in electrical components, radio transmission systems, transmission systems, etc., can solve the problems of high cost and low coverage performance, and achieve the effect of meeting mission requirements, wide application prospects, and complete coverage performance
Inactive Publication Date: 2019-05-07
张雅声
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Problems solved by technology
The technology proposed in the present invention aims to solve the problem of low coverage performance and hig
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Embodiment 1
[0060] Embodiment 1 of the present invention provides an area coverage push-broom constellation, and the area coverage push-broom constellation includes:
[0061] At least one group of push-broom satellites; the configuration of satellite orbit elements in the at least one group of push-broom satellites is the same, and the right ascension of the ascending node is different.
[0062] Each group of push-broom satellites consists of two or more satellites arranged side by side, and each satellite is deployed on a different orbital plane.
[0063] The number of satellites in each group of push-broom satellite groups specifically includes:
[0064] According to the size of the regional target and the satellite-to-ground instantaneous coverage bandwidth, calculate the minimum number of satellites N to meet the instantaneous full coverage requirement,
[0065]
[0066] Among them, d is defined as the width of the target area, w is defined as the width of the satellite's instanta...
Embodiment 2
[0079] The embodiment of the present invention also provides a method for constructing an area coverage push-broom constellation, including:
[0080] Step 1. Select the observation area, and find its circumscribed circle according to the shape of the observation area.
[0081] The finding of the circumscribed circle according to the shape of the observation area refers to the smallest circle that can envelop the entire observation area with the center of the observation area as the center.
[0082] Step 2: Determine the number of satellites and the orbital inclination of the push-broom satellite group according to the radius of the outer cut circle.
[0083] First, determine the orbital inclination that can cover the area through the latitude of the target observation area;
[0084] Secondly, according to the diameter of the outer truncated circle and the coverage width of a single satellite, determine the minimum number of satellites in the push-broom satellite group that ca...
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Abstract
The invention discloses an area covering push-broom constellation. The area covering push-broom constellation comprises at least one set of push-broom satellite groups, wherein the satellite orbit element configurations in the push-broom satellite groups are same, and the right ascensions of ascending nodes are different. The invention further discloses a construction method of the area covering push-broom constellation. The construction method comprises the steps that an observation area is selected, and a circumcircle of the observation area is found according to the shape of the observation area; the satellite quantity and the orbit inclination angle of the push-broom satellite groups are determined according to the radius of the circumcircle; the difference between the right ascensions of ascending nodes of every two adjacent satellites is calculated; the configuration of the push-broom satellite constellation is determined. According to the area covering push-broom constellation and the construction method thereof, the push-broom satellite constellation is presented for solving the problems that in a traditional Walker satellite constellation, the area target monitoring cost is too high, the operability is low, and missed targets are prone to generation, and the discrete full-covering problem in a limited area range can be effectively solved through the constellation; compared with the traditional Walker constellation, the method has the advantages that the more complete covering performance is achieved, the very rigorous task requirements can be met, and the wide application prospect is achieved.
Description
technical field [0001] The invention relates to an area coverage push-broom constellation and a construction method thereof, in particular to a method for realizing a push-broom constellation based on coverage band splicing, and belongs to the technical field of spacecraft constellation and orbit design. Background technique [0002] In the early application of satellites, tasks were mainly accomplished by a single satellite. But except for a few cases (geostationary orbit), most satellites cannot be fixed above a certain point on the earth, and their coverage is always changing. Therefore, in order to use multiple satellites to work together to complete a specific task, the concept of satellite constellation came into being. Satellite constellation (constellation for short) refers to a satellite system composed of multiple satellites, the satellite orbit forms a stable spatial geometric configuration, and the satellites maintain a fixed time-space relationship, and is used...
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