Optimization design of satellite navigation system spot beam power enhancement signal parameters

被引：2

作者：

Lyu Z. ^{[1
]}

Li P. ^{[1
]}

Li L. ^{[1
]}

机构：

[1] College of Electronic Science, National University of Denfense Technology, Changsha

来源：

Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2021年 / 43卷 / 10期

关键词：

Power-enhanced technology; Satellite navigation system; Spot beam;

D O I：

10.12305/j.issn.1001-506X.2021.10.30

中图分类号：

学科分类号：

摘要：

It is an effective measure to improve the anti-jamming performance of navigation signals that navigation satellites transmit spot beam power enhancement signals for specific regions. In view of the narrow beam width and variable direction of the spot beam power enhancement signal, the effects of working parameters such as power enhanced amplitude, half-beam angle and sweep angle on the coverage performance are studied. The analysis results show that when the amplitude of power enhancement varies from 0 to 20 dB, the equivalent noise ratio increases linearly and has the best enhancement effect. When the half-beam angles of geosynchronous earth orbit (GEO)/inclined geosynchronous earth orbit (IGSO) and medium earth orbit (MEO) satellite antenna are 0.86° and 1.31° respectively, the 20 dB power enhancement amplitude can be achieved with the corresponding radius of 542 km and 494 km. When the sweep angles of GEO/IGSO and MEO satellite antenna are 7.79° and 11.90° respectively, the maximum coverage radius reaches 9 046 km and 8 538 km. © 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.

引用

页码：2954 / 2960

页数：6

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