车载超短波电台受扰程度定量分析与评估

doi:10.16180/j.cnki.issn1007-7820.2022.11.001

Abstract

Abstract:

As one of the core components of the in-vehicle communication system, the vehicle-mounted radio is susceptible to interference from the complex electromagnetic environment in the vehicle, resulting in a decrease in communication quality or loss of performance. This study uses experimental data to establish a quantitative model and evaluation method that can describe the degree of interference of the vehicle-mounted radio station, and studies the degree of interference of the vehicle-mounted radio station in the complex electromagnetic environment of the vehicle. By analyzing the receiver desensitization mechanism, based on the test data of a certain model of ultrashort wave radio, a quantitative model of receiver desensitization and antenna port interference voltage is established. And using the established model, an evaluation method to characterize the communication performance of the disturbed vehicle radio is proposed using analytic hierarchy process. The experimental data verification shows that the proposed model has high accuracy, and the quantization error of more than 85% of the test frequency points is within the 6 dB limit, indicating that the proposed evaluation method is effective and feasible.

Key words: very high frequency radio, disturbance degree, reduction of sensitivity, non-linear effects, communication efficiency, analytic hierarchy process, evaluation, electromagnetic compatibility

CLC Number:

TN911.4

WANG Wen,LU Hongmin,ZHANG Guangshuo,CHEN Chongchong,ZHANG Shiwei. Quantitative Analysis and Evaluation of the Disturbance Degree of Vehicle-Mounted VHF Radio[J].Electronic Science and Technology, 2022, 35(11): 1-6.

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References 18

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评估等级	评估量值
优秀	(0.9,1]
良好	(0.6,0.9]
合格	(0.3,0.6]
不合格	[0,0.3]

指标值	干扰电压1	干扰电压2	干扰电压3
干扰电压幅值	-1.0 dBμV	3.7 dBμV	7.7 dBμV
减敏量	0 dB	5 dB	9 dB
信噪比	12 dB	7 dB	3 dB
清晰度指标	0.64	0.50	0.39
误码率	3.43×10^-5	12.59×10^-3	7.89×10^-2
通信距离	25 km	19 km	15 km

指标值	干扰电压1	干扰电压2	干扰电压3
清晰度指标	1	0.78	0.61
误码率	1	0.43	0.25
通信距离	1	0.76	0.60
评估值	1	0.63	0.45

Quantitative Analysis and Evaluation of the Disturbance Degree of Vehicle-Mounted VHF Radio

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