Optimal Design Method for LEO Communication and Navigation Augmented Hybrid Constellation
An optimized design and constellation technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve the problems of lack of hybrid constellation optimization design methods, limited number of boundary constraints, limited constellation work performance, etc., to achieve good compatibility The effect of interoperability, small number of satellites, and excellent constellation performance
Active Publication Date: 2018-09-25
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology
Most of the existing low-orbit communication constellations and navigation constellations are designed separately, and the number of boundary constraints considered by the method is limited, resulting in limited performance of the designed constellations. There are few studies on satellite systems, and there is a lack of hybrid constellation optimization design methods for this special application
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[0073] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0074] to combine figure 1 , the present invention provides a method for optimizing the design of low-orbit communication and navigation enhanced hybrid constellations, comprising the following steps:
[0075] Step 1: Determine that the satellite orbit type of each satellite in the mixed constellation is a circular orbit, its eccentricity e=0, and the argument of perigee ω=0;
[0076] Specifically, since the satellite orbits in circular orbits have relatively small changes in altitude and speed, satellites used for navigation and positioning are also often in circular o...
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The invention provides an optimization design method of a low-orbit communication and navigation enhancement mixed constellation. The method comprises the following steps: determining a satellite orbit type; determining a satellite orbit height; determining a minimum observation elevation angle; selecting constellation configuration; determining an orbit inclination angle; determining a satellite quantity; determining an orbit surface quantity and a phase factor; selecting initial ascending node right ascension in an optimized mode; analyzing coverage performance of the low-orbit communication and navigation enhancement mixed constellation; and after traversing ends, comparing all mixed constellation parameters satisfying design requirements, and selecting an optimal solution. The method has the following advantages: through combination of factors needing to be considered for design of a communication and navigation enhancement constellation at each phase, the designed low-orbit communication and navigation enhancement mixed constellation can satisfy user demands, is excellent in constellation performance, is small in satellite quantity and quite good in compatible mutual operation capability between constellations.
Description
technical field [0001] The invention belongs to the technical field of hybrid constellation optimization design, and in particular relates to an optimal design method of a low-orbit communication and navigation enhanced hybrid constellation. Background technique [0002] Satellite communication systems are divided into regional systems and global systems according to their coverage. At present, there are two schemes for realizing global real-time communication by using satellites: (1) basically realizing global real-time communication by using 3 (or more than 3) GEO satellites. (2) Use MEO and LEO satellites to form a global constellation to realize global communication. The height of MEO satellite is about 20000km, while the height of LEO satellite is between 700-1500km. A constellation composed of a certain number of MEO and LEO satellites can provide uninterrupted real-time communication around the world. For example, the Iridium system constellation is composed of 66 s...
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IPC IPC(8): G01S19/03H04B7/185
CPCG01S19/03H04B7/18528
Inventor 胡敏杨茗棋宋俊玲帅玮祎杨雪榕夏鲁瑞肖龙龙潘升东
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV