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Research on Anti-jamming of Satellite Communication System Using Adaptive Filtering Algorithm

Author: GaoFan
Tutor: ZhangHui
School: Xi'an University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Direct Sequence Spread Spectrum Hopping Interference suppression Adaptive filtering
CLC: TN927.2
Type: Master's thesis
Year: 2007
Downloads: 59
Quote: 0
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Abstract


Larger satellite technology and systems in communications, remote sensing , scientific research , technology demonstrations , interplanetary exploration and education . In recent years , the spread spectrum technology has been widely applied to military and civilian fields . To improve the anti-jamming capability of spread spectrum systems is an important research topic . This paper uses the minimum mean square (LMS) and recursive least squares (RLS) two filtering algorithms, interference suppression for spread spectrum communication system . Take the appropriate anti-jamming measures to suppress the interference , which is one of the key technologies in satellite communications systems engineering design , has important theoretical significance and significant practical value . This paper first introduces the basic principles of the common variety of adaptive filtering algorithms . On this basis, this paper then specific analysis of the performance of the LMS algorithm , several improved LMS algorithm and its performance simulation . Secondly, the spread-spectrum anti-jamming model design , with a focus on expanding spread spectrum, frequency hopping two - channel anti-jamming capability . Through analysis of the model of the spread - spectrum channel , the specific analysis of the performance of suppressing the interference of the spread spectrum system , gives the filter realization of the adaptive algorithm in the spread spectrum communication . Finally, the summary of the work done in this article , and an overview of some of the latest developments in spread spectrum communications in narrowband interference suppression measures , and pointed out the direction for the follow-up phase of the study .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Satellite Communications and Space Communications > Satellite Communications
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