无人机数据链带内电磁干扰效应预测模型与验证

doi:10.12305/j.issn.1001-506X.2025.08.34

Abstract

Abstract:

Aiming at the problem that current in-band electromagnetic interference effect prediction models of unmanned aerial vehicle data link are difficult to predict the effect of multiple interference source interferences in a complex electromagnetic environment, a prediction model of in-band electromagnetic interference effect for unmanned aerial vehicle data link is established based on interference effect index of direct sequence spread spectrum data link. Taking the unmanned aerial vehicle data link of a direct sequence spread spectrum as test object, the multi-type interference signal combination is formed by the combination of single-tone interference and partial-band noise interference to simulate the complex electromagnetic environment. The electromagnetic interference injection method is used to carry out the in-band interference loss-of-lock threshold test and the effect index test respectively. The results show that the error between the experimental value and the theoretical value of the effect index is less than 0.627 dB, which illustrates the effectiveness of the model. Meanwhile, the model is also suitable for the prediction of periodic signal interference effect.

Key words: unmanned aerial vehicle data link, electromagnetic interference, interference effect, prediction model

CLC Number:

TN 972

Xiaolu ZHANG, Yazhou CHEN, Min ZHAO. Prediction method and verification of in-band electromagnetic interference effect for unmanned aerial vehicle data link[J]. Systems Engineering and Electronics, 2025, 47(8): 2763-2773.

Figures/Tables 13

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References 34

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组号		P₁/dBm	P₂/dBm	P₁₀/dBm	P₂₀/dBm	$\tau $	$10\lg \tau /{\text{dB}}$	状态
1	1-1	−59.6	−58.0	−58.8	−53.1	1.155	0.627	失锁
	1-2	−60.2	−57.0	−58.8	−53.1	1.132	0.538
	1-3	−60.9	−56.1	−58.8	−53.1	1.118	0.484
	1-4	−62.1	−55.5	−58.8	−53.1	1.043	0.184
	1-5	−62.9	−54.8	−58.8	−53.1	1.065	0.274
	1-6	−63.9	−54.3	−58.8	−53.1	1.068	0.284
2	2-1	−62.2	−49.3	−60.7	−44.9	1.071	0.298	失锁
	2-2	−62.9	−48.8	−60.7	−44.9	1.010	0.043
	2-3	−63.9	−47.5	−60.7	−44.9	1.028	0.121
	2-4	−64.9	−46.9	−60.7	−44.9	1.011	0.048
	2-5	−65.9	−46.3	−60.7	−44.9	1.026	0.113
	2-6	−66.9	−45.9	−60.7	−44.9	1.034	0.146
3	3-1	−54.1	−56.5	−53.4	−48.3	1.002	0.011	失锁
	3-2	−54.9	−52.3	−53.4	−48.3	1.106	0.438
	3-3	−55.6	−51.6	−53.4	−48.3	1.070	0.295
	3-4	−56.6	−50.7	−53.4	−48.3	1.054	0.229
	3-5	−57.2	−50.1	−53.4	−48.3	1.078	0.324
	3-6	−57.9	−49.5	−53.4	−48.3	1.113	0.466
4	4-1	−46.3	−60.5	−45.4	−53.4	1.008	0.034	失锁
	4-2	−47.1	−58.2	−45.4	−53.4	1.015	0.031
	4-3	−47.8	−55.9	−45.4	−53.4	1.138	0.561
	4-4	−48.7	−55.2	−45.4	−53.4	1.128	0.525
	4-5	−49.7	−54.8	−45.4	−53.4	1.096	0.398
	4-6	−50.4	−54.4	−45.4	−53.4	1.111	0.455

组号	P₁/dBm	P₂/dBm	$\tau $	$10\lg \tau /{\text{dB}}$	状态
1-1−1	−59.6	−59.0	1.089	0.369	未失锁
2-1−1	−62.2	−50.3	0.996	−0.016
3-1−1	−54.1	−57.5	0.971	−0.126
4-1−1	−46.3	−61.5	0.968	−0.143
1-1+1	−59.6	−57.0	1.239	0.931	失锁
2-1+1	−62.2	−48.3	1.165	0.663
3-1+1	−54.1	−55.5	1.042	0.177
4-1+1	−46.3	−59.5	1.058	0.246

组号		P₁/dBm	P₂/dBm	P₃/dBm	P₁₀/dBm	P₂₀/dBm	P₃₀/dBm	$\tau $	$10\lg \tau /{\text{dB}}$	状态
1	1-1	−48	−67.2	−62.2	−47	−54.3	−54.1	1.000	0.002	失锁
	1-2	−48.7	−69.1	−58.7	−47	−54.3	−54.1	1.056	0.236
	1-3	−49.7	−68.1	−56.9	−47	−54.3	−54.1	1.104	0.428
	1-4	−49.4	−68.6	−57.3	−47	−54.3	−54.1	1.091	0.379
	1-5	−51.2	−66.6	−56.1	−47	−54.3	−54.1	1.070	0.294
	1-6	−51.7	−60	−58.1	−47	−54.3	−54.1	1.006	0.026
2	2-1	−53.3	−65.6	−59.8	−52.4	−55.6	−52	1.079	0.329	失锁
	2-2	−54.5	−65.9	−56.1	−52.4	−55.6	−52	1.099	0.410
	2-3	−55.3	−64.9	−55.7	−52.4	−55.6	−52	1.057	0.240
	2-4	−57.3	−64.5	−54.6	−52.4	−55.6	−52	1.002	0.009
	2-5	−57.6	−64.3	−54	−52.4	−55.6	−52	1.068	0.285
	2-6	−58.6	−66.8	−53.6	−52.4	−55.6	−52	1.008	0.033
3	3-1	−61	−63.6	−62	−60.1	−52.6	−52.8	1.012	0.054	失锁
	3-2	−61.7	−63.2	−59.2	−60.1	−52.6	−52.8	1.008	0.035
	3-3	−62.6	−64.2	−57.1	−60.1	−52.6	−52.8	1.003	0.013
	3-4	−63.8	−64.8	−55.6	−60.1	−52.6	−52.8	1.012	0.050
	3-5	−64.5	−63.5	−55.3	−60.1	−52.6	−52.8	1.007	0.029
	3-6	−65.1	−64.6	−54.8	−60.1	−52.6	−52.8	1.010	0.044

组号	P₁/dBm	P₂/dBm	P₃/dBm	$\tau $	$10\lg \tau /{\text{dB}}$	状态
1-1−1	−48	−67.2	−63.2	0.969	−0.138	未失锁
2-1−1	−53.3	−65.6	−60.8	1.045	0.190
3-1−1	−61	−63.6	−63.0	0.988	−0.053
1-1+1	−48	−67.2	−61.2	1.239	1.041	失锁
2-1+1	−53.3	−65.6	−58.8	1.165	1.122
3-1+1	−61	−63.6	−61	1.042	1.044

参数	组号	干扰1	干扰2					τ	10lgτ/dB	状态
频率	/	f_s+2	f_s+1	f_s+1.5	f_s+0.5	f_s+2.5	f_s−0.5	/	/	/
P_i0/dBm	/	−54.0	−61.3	−58.3	−55.0	−53.8	−54.3	/	/	/
P_i /dBm	1	−60.2	−62.7	−72.6	−72.3	−81.5	−81.9	1.024	0.101	失锁
	2	−59.3	−63.0	−73.2	−72.9	−81.8	−82.1	1.023	0.099	失锁
	3	−57.2	−64.3	−74.3	−74.1	−83.1	−82.9	1.020	0.085	失锁
	4	−55.8	−66.0	−76.1	−76.5	−83.8	−83.8	1.025	0.109	失锁
	5	−54.7	−69.9	−79.3	−79.5	−86.1	−86.3	1.002	0.008	失锁

Prediction method and verification of in-band electromagnetic interference effect for unmanned aerial vehicle data link

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