GNSS distribute suppression jamming method based on directional antennas

doi:10.11947/j.AGCS.2026.20260107

Abstract

Abstract:

To address the issues of low energy utilization efficiency, high deployment costs, and poor concealment associated with traditional omnidirectional antennas in GNSS distribute suppression jamming, this paper proposes a GNSS distribute suppression jamming method based on directional antennas. This method is built upon the 3D space GNSS distributed suppression jamming method based on slope optimal point. By constructing a 3D ellipsoidal radiation model for directional antennas and establishing coordinate transformation relationships, an improved Euclidean clustering algorithm based on geometric constraints is designed to accurately solve the optimal beam pointing of the antenna. Meanwhile, the deployment process of jamming sources is reconstructed to match the characteristics of directional antennas. Furthermore, a combined omnidirectional-directional antenna jamming mode is designed, employing a sequential selection strategy to integrate the advantages of both antennas types. Simulation results show that the proposed method can reduce the number of jamming sources by 34.62% to 65.63% compared with the omnidirectional antenna scheme on the premise of achieving approximately 95% of the target jamming coverage. The combined omnidirectional-directional mode further reduces the number of jamming sources by 20% to 50% relative to the purely directional solution. Moreover, the higher the antenna gain, the more significant the deployment scale optimization. At the same time, it significantly reduces signal overlap redundancy, improving energy utilization efficiency and deployment concealment.

Key words: directional antenna, Euclidean clustering, distribute suppression jamming, satellite navigation, viewshed analysis

CLC Number:

P228

Zhiheng Liu, Weiping Liu, Zhiwei Lü, Bo Jiao. GNSS distribute suppression jamming method based on directional antennas[J]. Acta Geodaetica et Cartographica Sinica, 2026, 55(9): 1530-1541.

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	天线类型	增益范围/dB	典型应用场景
全向天线	标准全向	2~5	车载干扰
	中增益全向	6~9	中型区域覆盖
	特种全向	5~8	固定式干扰系统
定向天线	八木天线	6~12	固定点定向干扰
	平板/对数周期	8~16	基站式干扰
	螺旋定向	10~18	无人机反制

试验区域大小	待聚类点数	定向天线模型参数			欧氏聚类参数设置			分簇结果
试验区域大小	待聚类点数	a/m	b/m	c/m	搜索半径R/m	最小簇数量N_min	最大簇数量N_max	分簇个数	最大簇编号
10 km×10 km	12 456	1500	1500	3000	100	1	10 000	3	1
10 km×10 km	12 456	1500	1500	3000	100	1	8000	3	1
10 km×10 km	12 456	1500	1500	3000	100	1	6000	5	1
10 km×10 km	12 456	1500	1500	3000	100	1	4000	7	1
10 km×10 km	12 456	1500	1500	3000	100	1	2000	6	2
10 km×10 km	12 456	1500	1500	3000	100	1	1000	12	2

场景编号	组别序号	发射功率/W	干扰信号最大覆盖距离/m	全向天线增益/dB	定向天线增益/dB	干扰源数量			干扰源数量减少百分比/（%）
场景编号	组别序号	发射功率/W	干扰信号最大覆盖距离/m	全向天线增益/dB	定向天线增益/dB	全向	定向	全/定向	定向vs全向	组合vs定向
1	1	0.01	90	2	6	26	17	12	34.62	29.41
	1	0.01	90	2	8	26	15	12	42.31	20.00
	2	0.03	156	2	6	21	12	8	42.86	33.33
	2	0.03	156	2	8	21	12	8	42.86	33.33
2	1	3	1560	5	12	32	19	11	40.63	42.11
	1	3	1560	5	18	32	11	8	65.63	27.27
	2	5	2139	5	12	19	10	5	47.36	50.00
	2	5	2139	5	18	19	7	5	63.16	28.57