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Satellite selection method for medium earth orbit satellite search and rescue system

A technology of orbiting satellites and satellites, which is applied in the field of navigation to achieve the effect of low complexity, fast calculation speed and guaranteed continuity

Active Publication Date: 2011-04-20
SPACE STAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of satellite selection when one ground terminal station faces multiple satellites in the middle orbit satellite search and rescue system

Method used

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  • Satellite selection method for medium earth orbit satellite search and rescue system
  • Satellite selection method for medium earth orbit satellite search and rescue system
  • Satellite selection method for medium earth orbit satellite search and rescue system

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Embodiment Construction

[0028] The satellite selection method of the medium orbit satellite search and rescue system described in the present invention is suitable for the medium orbit satellite search and rescue system, and can be used to help ground terminal stations solve the problem of selecting tracking satellites.

[0029] 1. Basic principles

[0030] The satellite selection method of the present invention includes two main steps, which are respectively "single-time optimal star scheme" and "antenna minimum switching tracking scheme".

[0031] 1. The most optimal star program at a single moment

[0032] The best goal that the ground terminal station of the medium-orbit search and rescue system hopes to achieve when selecting satellites is to make the beacons within the service range of the ground terminal station have the best comprehensive positioning results.

[0033] At a specific moment, a traversal star selection strategy can be adopted. For each satellite combination, according to the p...

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Abstract

The invention relates to a satellite selection method for a medium earth orbit satellite search and rescue system, which comprises the single-time satellite selection step and the antenna switching and tracking processing step. The single-time satellite selection step can select the best satellite combination at the satellite selection time; and the antenna switching and tracking processing step can realize optimal switching strategy of an antenna. By adopting the method, the satellite selection problems at a ground terminal of the medium earth orbit satellite search and rescue system can be solved, the implementation speed is fast, the satellite selection precision is high, the switching times of the antenna can be reduced, and the continuity of tracking satellites of the antenna can be further ensured.

Description

technical field [0001] The invention relates to a satellite selection method for a search and rescue system, in particular to a satellite selection method suitable for a mid-orbit satellite search and rescue system, and belongs to the field of navigation. Background technique [0002] For the medium-orbit search and rescue system ground terminal station (MEOLUT), multiple satellites are usually observed at each moment. The design of the space segment will include the Galileo constellation, the DASS constellation, and the Galonass constellation. The number of satellites in the space segment at each time will be more than 10. For example, a ground terminal station located in a mid-latitude region will usually see 7-12 satellites. From the perspective of the design complexity and cost of the ground terminal station, it will not have the same number of tracking antennas, so using a small number of antennas to select the optimal satellite combination for tracking to achieve the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/28G01S19/38
Inventor 刘绍波林墨张云杰
Owner SPACE STAR TECH CO LTD
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