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A space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication

A technology of satellite communication and transmission characteristics, applied in transmission monitoring, transmission system, radio transmission system, etc., can solve the problem of insufficient analysis of low-orbit satellite mobile communication channels, and achieve ease of calculation burden, high accuracy, and low complexity Effect

Active Publication Date: 2022-07-19
NANJING CHINA SPACENET SATELLITE TELECOM
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Problems solved by technology

[0006] Purpose of the invention: Aiming at the problem of insufficient analysis of low-orbit satellite mobile communication channels, this invention proposes a space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communications, which is useful for realizing 6G large broadband, high spectrum multiplexing and global low-orbit satellite communication. Seamless high-speed communication coverage, has important theoretical significance and application value

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  • A space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication
  • A space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication
  • A space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication

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Embodiment Construction

[0054] Below in conjunction with specific embodiments, the present invention will be further illustrated, and it should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The modifications all fall within the scope defined by the appended claims of this application.

[0055] like figure 1 A method for analyzing the space-time-frequency non-stationary transmission characteristics for low-orbit satellite communication, assuming that the transmitter and receiver are configured separately root and root antenna, the system model diagram is as follows figure 1 ;Establish Cartesian coordinate system, where The axis is defined as the line connecting the projection of the midpoint of the antenna array at the transmitting end on the horizontal plane and the midpoint of the antenna array at the receiving end; The axis is defined as the line perpendicular to the horizontal plane through the ...

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Abstract

The invention discloses a space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication. By setting a low-orbit satellite mobile communication scene, and establishing a rectangular coordinate system; calculating the direct path length between a transmitting end and a receiving end; The transmission path length of the direct path; calculate the channel complex impulse function of the direct path and the indirect path respectively; establish the channel matrix based on the channel complex impulse function; analyze the low orbit based on the channel complex impulse function of the direct path and the indirect path Space-time-frequency non-stationary characteristics of satellite mobile communications. It is used to solve technical problems such as time-domain or frequency-domain non-stationarity, abundant scatterers, and multiple mobility in low-orbit satellite mobile communication scenarios; at the same time, it has important guiding significance for evaluating system performance such as low-orbit satellite mobile communication channel capacity and transmission gain. and application value.

Description

technical field [0001] The invention relates to a space-time-frequency non-stationary transmission characteristic analysis method for low-orbit satellite communication, and belongs to the technical field of wireless communication. Background technique [0002] In recent years, low-orbit satellite mobile communication has been applied in various fields such as navigation, communication and broadcasting, and has become a widespread concern in both academia and industry. The low-orbit satellite mobile communication has reliable service quality and low cost, so it can provide global coverage services. Generally speaking, satellite mobile communications are divided into geostationary orbits and non-geostationary orbits. Geostationary orbit satellites are geostationary satellites located 35,786km above the equator; non-geostationary orbits can be divided into low orbits, medium orbits and high track. Therefore, in the low-orbit satellite mobile communication scenario, channel mo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391H04B7/185
CPCH04B17/3912H04B7/18573
Inventor 江浩孔圆圆秦超杰张继群吴伟李玮
Owner NANJING CHINA SPACENET SATELLITE TELECOM
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