北斗导航星座星间通信速率控制方法

李献斌; 王建; 范广腾; 杨志玺

doi:10.13700/j.bh.1001-5965.2019.0411

北斗导航星座星间通信速率控制方法

doi: 10.13700/j.bh.1001-5965.2019.0411

军事科学院国防科技创新研究院, 北京 100071

基金项目:

国家自然科学基金 61801503

详细信息

作者简介:
李献斌, 男, 博士, 助理研究员。主要研究方向:星间测距与星间通信

王建, 男, 博士, 助理研究员。主要研究方向:软件无线电和数字信号处理

范广腾, 男, 博士, 助理研究员。主要研究方向:卫星导航与定位

杨志玺, 男, 博士, 助理研究员。主要研究方向:空间仪器

通讯作者:
王建, E-mail: wangjian710108@126.com

中图分类号: V448.224
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- 被引次数: 0
出版历程
- 收稿日期: 2019-07-23
- 录用日期: 2019-10-25
- 网络出版日期: 2020-04-20

Inter-satellite communication rate control method of Beidou navigation constellation

National Innovation Institute of Defense Technology, Academy of Military Sciences, Beijing 100071, China

Funds:

National Natural Science Foundation of China 61801503

More Information

Corresponding author: WANG Jian, E-mail: wangjian710108@126.com

摘要

摘要:
北斗导航星座可以通过星间测距和传输链路实现自主定轨和性能增强。导航卫星间进行数据传输时，卫星相对位置时变，传输信道特性也随之不断发生变化。针对导航卫星间传输链路时变特性，提出了一种基于星历的星间通信速率控制方法。在满足传输服务质量的需求下，根据导航卫星自有的高精度星历资源定量计算星间最优通信速率，通过速率的动态调整提高星座的传输效能。仿真结果表明，采用所提方法，北斗导航星座星间传输效能可以提高1.92倍，验证了方法的有效性。
- 北斗 /
- 导航星座 /
- 星间通信 /
- 速率控制 /
- 星历
Abstract:
Beidou navigation constellation can achieve autonomous orbit determination and performance enhancement by introducing inter-satellite ranging and transmitting links. During data transmission of inter-satellite links, the relative position change of satellites with time causes the constant change of the characteristics of transmission channel. In view of the time-varying characteristics of inter-satellite transmitting links, an inter-satellite communication rate control method based on ephemeris is proposed. On the condition that the quality of transmission service is satisfied, the optimal inter-satellite transmission rate is quantitatively calculated according to the high-precision ephemeris resources that navigational satellite possesses, and the transmission efficiency is improved through the dynamic adjustment of the rate. The simulation results show that, using the proposed method, the inter-satellite transmission efficiency of Beidou navigation constellation can be improved by 1.92 times, which verifies the effectiveness of the method.
- Beidou /
- navigation constellation /
- inter-satellite communication /
- rate control /
- ephemeris

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图 1 星间测距通信一体化信号结构

Figure 1. Integrated signal structure of inter-satellite ranging communication

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图 2 基于星历的星间通信速率控制方法

Figure 2. Inter-satellite communication rate control method based on ephemeris

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图 3 星间通信数据帧结构

Figure 3. Frame structure of inter-satellite communication data

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图 4 北斗导航星座MEO星座构型

Figure 4. MEO constellation configuration of Beidou navigation constellation

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图 5 第一轨道面卫星间通信速率

Figure 5. Inter-satellite communication rate in the first orbit plane

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图 6 M11卫星与第二轨道面星间距离

Figure 6. Distances between M11 and satellites in the second orbit plane

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图 7 M11卫星与第二轨道面卫星间通信速率

Figure 7. Inter-satellite communication rate of M11 and satellites in the second orbit plane

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图 8 离散化的M11卫星与M25卫星通信速率

Figure 8. Discretized communication rate between M11 and M25

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图 9 M11卫星与M21卫星间传输效能对比

Figure 9. Comparison of transmission efficiency between M11 and M21

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图 10 M11与第二轨道面卫星间传输效能对比

Figure 10. Comparison of transmission efficiency between M11 and satellites in the second orbit plane

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表 1 M11与同轨道面卫星之间的距离

Table 1. Distances between M11 and satellites in the same orbit

目标卫星	星间距离/km
M12	21 358.68
M13	39 465.59
M14	51 564.07

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表 2 星间通信链路中的参数设置

Table 2. Parameter setting of inter-satellite communication links

参数	数值
传输误码率	10^-6
通信频率/GHz	30
发射功率/dBW	20
发射天线增益/dB	25.5
接收天线增益/dB	20
接收机噪声温度/K	300

下载: 导出CSV

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