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Ka-band satellite channel modeling method integrated with meteorological factors

A technology of satellite channels and meteorological factors, applied in electrical components, wireless communication, radio transmission systems, etc., can solve problems such as lack of data classification and difficulty in obtaining model simulation data

Inactive Publication Date: 2013-07-03
紫光陕数大数据有限公司
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Problems solved by technology

[0003] Aiming at technical problems such as lack of theoretical basis for data classification and difficulty in obtaining model simulation data in the existing satellite channel modeling technology, the present invention proposes a Ka-band satellite channel modeling method that integrates meteorological factors

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  • Ka-band satellite channel modeling method integrated with meteorological factors
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Embodiment Construction

[0037] Below in conjunction with accompanying drawing, a kind of Ka-band satellite channel modeling method of comprehensive meteorological factor of the present invention is further described in detail.

[0038] A kind of Ka-band satellite channel modeling method of comprehensive weather factor of the present invention, its principle is as follows figure 1 shown.

[0039] A. Ka-Band Satellite Channel Propagation Characteristic Analysis

[0040] The multipath effect caused by reflection, scattering and diffraction in the signal propagation process widely exists in various frequency bands of satellite communication, which will have a great impact on the signal. It has been proved by research that the influence of multipath effect on the channel can be described by Rice distribution, and the probability density function of its amplitude is expressed as

[0041] p Rice = ( h ) ...

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Abstract

The invention provides a Ka-band satellite channel modeling method integrated with meteorological factors and aims at solving the problems that data classification is lack of theoretical basis and simulation data are difficult to obtain in a traditional Ka-band satellite channel modeling process. The method comprises the following steps of: firstly, analyzing the propagation characteristic of a Ka-band satellite channel and the influences of multipath propagation, rainfall, atmospheric absorption, atmospheric scintillation and other factors to satellite channel modeling; and secondly, establishing a multistate Markov model of the Ka-band satellite channel by using a principal component analysis and fuzzy clustering analysis method. Through comparing the electrical level crossing-over rate and the average decay time of the established model with the electrical level crossing-over rate and the average decay time of a former model, the accuracy and the effectiveness of the channel model are checked, the theoretical basis is provided for resisting the rain attenuation of the Ka-band satellite channel, and meanwhile, Ka-band satellite channel modeling method has great practical significance in technical research on the aspects of signal modulation, coding mode and power control of Ka-band satellite communication.

Description

technical field [0001] The technical field of wireless communication of the present invention specifically refers to a Ka-band satellite channel modeling method that integrates meteorological factors. Background technique [0002] With the increasing demand for satellite communication channel capacity and the increasingly crowded C and Ku frequency band services, there is an increasing need for satellite communication systems that work in higher frequency bands, larger bandwidths, and higher spectral efficiency. Ka-band satellite communication has become an inevitable trend of future satellite communication because of its advantages of large bandwidth, large communication capacity, narrow beam, small terminal size, many satellites that can be accommodated in the orbital plane, and strong anti-interference ability. In recent years, more and more countries and institutions have joined in the development and use of Ka-band satellite communication systems. Channel propagation c...

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Application Information

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IPC IPC(8): H04B7/185H04W84/06
Inventor 郭业才袁涛张秀再
Owner 紫光陕数大数据有限公司
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