一种适用于北斗短报文通信的天线波束指向算法

张薇; 何宏伦; 王玮

doi:10.11999/JEIT200559

一种适用于北斗短报文通信的天线波束指向算法

doi: 10.11999/JEIT200559

航天恒星科技有限公司北京 100086

详细信息

作者简介:
张薇：女，1987年生，硕士，高级工程师，主要研究方向为卫星通信数据链系统和天线设计

何宏伦：男，1979年生，硕士，高级工程师，主要研究方向为卫星通信数据链系统设计

王玮：女，1981年生，硕士，工程师，主要研究方向为北斗短报文通信和可靠性设计

通讯作者:
张薇　wzhang1987@163.com

中图分类号: TN927.2
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出版历程
- 收稿日期: 2020-07-07
- 修回日期: 2020-12-18
- 网络出版日期: 2021-02-06
- 刊出日期: 2021-10-18

An Algorithm of Antenna Beam Direction for Beidou Short-message Communication

Space Star Technology Co., Ltd, Beijing 100086, China

摘要

摘要: 针对北斗短报文通信中载体天线波束指向北斗卫星的问题，该文提出一种天线波束指向算法。该算法根据载体所处的地理位置和姿态，计算出指向北斗卫星的天线波束指向角。根据载体天线的合成波束增益和所处地理位置的北斗卫星波束增益，选择出最优的北斗卫星，并将天线波束指向该卫星。该方法可以保证载体运动过程中，天线合成波束实时指向最优北斗卫星，最大限度地提高了北斗短报文通信性能。
- 天线波束指向 /
- 北斗卫星 /
- 短报文通信
Abstract: To solve the problem that the carrier antenna beam directs to Beidou satellite in Beidou short-message communication, a direction algorithm of the antenna beam is proposed. According to the position and the attitude of the carrier, the angle of the antenna beam directing to Beidou satellite is calculated. Based on the synthetic beam gain of the carrier antenna and the beam gain of the Beidou satellite, the optimal satellite is selected and directed to. This algorithm can ensure that the carrier antenna beam directs to the optimal satellite in real time when the carrier is moving, and can greatly improve the performance of Beidou short-message communication.
- Antenna beam direction /
- Beidou satellite /
- Short-message communication

HTML全文

图 1 天线波束指向算法原理框图

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图 2 载体运动姿态角

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图 3 最优短报文波束号

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图 4 总链路增益

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图 5 天线波束指向角-俯仰角

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图 6 天线波束指向角-方位角

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图 7 天线波束指向角定义

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图 8 总能量最大短报文波束

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图 9 总能量最大短报文波束的链路增益

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图 10 总能量最大短报文波束的天线波束指向角-俯仰角

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图 11 总能量最大短报文波束的天线波束指向角-方位角

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表 1 北斗卫星短报文波束能量查找表示意图(dB)

纬度(°)	经度(°)
纬度(°)	70	71	$ \cdots $	143	145
5	P_1,1	P_1,2	$ \cdots $	P_1,75	P_1,76
6	P_2,1	P_2,2	$ \cdots $	P_2,75	P_2,76
$ ⋮ $	$ \cdots $	$ \cdots $	$ \ddots $	$ \cdots $	$ \cdots $
55	P_51,1	P_51,2	$ \cdots $	P_51,75	P_51,76

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表 2 天线合成波束增益查找表示意图(dB)

方位角(°)	俯仰角(°)
方位角(°)	0	5	$ \cdots $	85	90
0	G_1,1	G_1,2	$ \cdots $	G_1,18	G_1,19
5	G_2,1	G_2,2	$ \cdots $	G_2,18	G_2,19
$ ⋮ $	$ \cdots $	$ \cdots $	$ \ddots $	$ \cdots $	$ \cdots $
360	G_73,1	G_73,2	$ \cdots $	G_73,18	G_73,19

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