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Elliptical orbit based multi-beam low orbit satellite channel simulation method

A channel simulation, low-orbit satellite technology, applied in the field of satellite mobile communications, can solve the problems of difficult testing costs and common institutions, and achieve the effect of improving simulation efficiency

Active Publication Date: 2018-11-16
SOUTHEAST UNIV
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Problems solved by technology

On the one hand, the measurement of the real channel characteristics of satellite mobile communication is far less convenient than that of the terrestrial cellular system, and the related test costs are difficult to be borne by ordinary organizations

Method used

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  • Elliptical orbit based multi-beam low orbit satellite channel simulation method
  • Elliptical orbit based multi-beam low orbit satellite channel simulation method
  • Elliptical orbit based multi-beam low orbit satellite channel simulation method

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Embodiment Construction

[0042] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] figure 1is a basic block diagram of the channel simulation method of the present method. First configure the communication working frequency point, satellite orbit parameters, user terminal parameters, modify the general parameters according to the accuracy requirements, select the satellite multi-beam antenna model and configure parameters, etc. The satellite orbit parameters include the semi-major axis of the elliptical orbit where the satellite is located, the eccentricity of the orbit, and the inclination of the orbit plane; the user terminal parameters include the number of users, the three-dimensional coordinates of each user, the running speed of the user, the receiving gain of the user terminal antenna, The minimum elevation angle of the user antenna and the noise power of the receiving end; the multi-beam satellite antenna ...

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Abstract

The invention discloses an elliptical orbit based multi-beam low orbit satellite channel simulation method. The method includes steps of configuring satellite communication working frequency points, satellite orbit parameters and user terminal parameters and modifying universal parameters according to precision requirements; generating three-dimensional coordinates of different users randomly in asingle process or configuring three-dimensional coordinates of different users manually by utilizing a terminal coordinate system; selecting a multi-beam satellite antenna module and configuring parameters; calculating beam gain of the satellite antenna; calculating free space loss, Doppler frequency shift and time delay; calculating channel coefficients; and calculating valid communication timeof the satellite to users. According to the invention, related problems occurring when the low orbit satellite is in an elliptical orbit are taken into account; after simulation, multiple parameters from different beam antennas of the satellite to the ground multiple terminals can be output.

Description

technical field [0001] The invention belongs to the field of satellite mobile communication, and in particular relates to a multi-beam low-orbit satellite channel simulation method based on an elliptical orbit. Background technique [0002] Future communication requires that people can communicate with anyone at any time and anywhere. With the ubiquitous communication demand and the continuous growth of high data rate communication services, the advantages of seamless coverage and large communication capacity of the satellite mobile communication system will play a key role in the new generation of communication systems. At present, there are still large areas of land and sea in my country that are not covered by cellular mobile communication systems, and there is an urgent need to develop new mobile communication technologies to achieve seamless communication coverage around the clock and in all regions. Satellite mobile communication system is an extension and supplement ...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04B7/185H04B7/0408
CPCH04B7/0408H04B7/18576H04B17/3912
Inventor 尤力仝玉山王闻今卢安安江彬巴特尔高西奇
Owner SOUTHEAST UNIV
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