基于阵列天线波束形成的卫星导航信号提纯

史鹏亮; 王晓宇; 薛瑞

doi:10.13700/j.bh.1001-5965.2021.0043

基于阵列天线波束形成的卫星导航信号提纯

doi: 10.13700/j.bh.1001-5965.2021.0043

史鹏亮^{1, 2},
王晓宇³,
薛瑞^1, ,

1.
北京麻豆精品秘国产传媒电子信息工程学院, 北京 100083
2.
空军研究院, 北京 100085
3.
中国电子科技集团公司第二十研究所导航专业部, 西安 710072

基金项目:

国家重点研发计划 2017YFB0503400

国家自然科学基金 61803037

详细信息

通讯作者:
薛瑞, E-mail: xuerui@cq5520.com

中图分类号: V241.6;TN96
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-22
- 录用日期: 2021-05-09
- 网络出版日期: 2021-07-15
- 整期出版日期: 2022-10-20

Purification method of satellite navigation signal based on array antenna beamforming

SHI Pengliang^{1, 2},
WANG Xiaoyu³,
XUE Rui^{1
, ,}

1.
School of Electronics and Information Engineering, Beihang University, Beijing 100083, China
2.
Air Force Research Academy, Beijing 100085, China
3.
Department of Navigation, The 20th Research Institute of CETC, Xi'an 710072, China

Funds:

National Key R & D Program of China 2017YFB0503400

National Natural Science Foundation of China 61803037

More Information

Corresponding author: XUE Rui, E-mail: xuerui@cq5520.com

摘要

摘要:
围绕对卫星导航信号实施转发式欺骗所需的卫星导航信号提纯要求，提出了一种数字波束形成的优化设计方法。通过向阵列天线接收信号的数据协方差矩阵加载由非目标卫星方向信息和阵列布局构造的“虚拟”干扰信号协方差矩阵，增大了协方差矩阵特征值的差异。用新构造的协方差矩阵计算最小方差无失真响应波束形成的加权向量，使波束指向方向的目标卫星信号无失真通过，并同时零陷其他非目标卫星的信号。通过计算机仿真试验验证了所提方法的正确性和有效性。
- 卫星导航 /
- 阵列天线 /
- 提纯 /
- 波束形成 /
- 空域滤波
Abstract:
To satisfy the requirements of satellite navigation spoofing, a satellite navigation signals purification method is proposed based on the optimal design of the array digital beamforming. Firstly, a new covariance matrix is constructed and the disparity between the max eigenvalue and the minimum eigenvalue of the covariance matrix of the array received data is expanded by combing the direction information of non-object satellites, the layout information of the received array and the covariance matrix of the array received data. Secondly, the spatial filter weights that make the object satellite signal distortion-free while nullifying any non-object satellite signals are computed by using the constructed covariance matrix. At last, the purified satellite signals are obtained by weighting the array of received data. The correctness and effectiveness of the method proposed in this paper are validated by computer simulations.
- satellite navigation /
- array antennas /
- purification /
- beamforming /
- spatial filtering

HTML全文

图 1 基于波束形成的卫星导航信号提纯原理

Figure 1. Principle of satellite navigation signal purification based on beamforming

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图 2 卫星星座分布天顶俯视图

Figure 2. Top view of satellite constellation distribution

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图 3 接收阵列布局

Figure 3. Receiving array layout

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图 4 优化波束响应

Figure 4. Response of optimized beams

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图 5 1#卫星仰角上优化波束和常规波束响应对比

Figure 5. Comparison of response of optimized beam and regular beams of satellite 1#

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图 6 1#波束在2#~10#卫星方向的响应对比

Figure 6. Comparison of responses of 1# beam in direction of 2# to 10# satellites

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图 7 1#~10#波束输出中各卫星信号功率对比

Figure 7. Comparison of satellite signal powers in 1# to 10# beam outputs

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表 1 导航卫星方位角和仰角

Table 1. Azimuth and elevation of navigation satellites

卫星号/PRN	方位角/(°)	仰角/(°)
1	131.89	39.37
2	224.49	39.79
3	176.97	50.26
4	113.98	23.73
5	245.27	23.41
6	175.6	41.46
7	353.58	70.84
8	156.52	6.15
9	201.68	62
10	289.28	64.42

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参考文献(16)

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