Investigation on Prediction Method of Electromagnetic Interference in the Tracking Loop of Navigation Receiver

Qinglong ZHANG; Yuming WANG; Erwei CHENG; Yazhou CHEN; Liyun MA; Zhe ZHANG

doi:10.11999/JEIT200895

Volume 43 Issue 12

Dec. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(12): 3656-3661

Qinglong ZHANG, Yuming WANG, Erwei CHENG, Yazhou CHEN, Liyun MA, Zhe ZHANG. Investigation on Prediction Method of Electromagnetic Interference in the Tracking Loop of Navigation Receiver[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3656-3661. doi: 10.11999/JEIT200895

Citation:

Qinglong ZHANG, Yuming WANG, Erwei CHENG, Yazhou CHEN, Liyun MA, Zhe ZHANG. Investigation on Prediction Method of Electromagnetic Interference in the Tracking Loop of Navigation Receiver[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3656-3661. doi: 10.11999/JEIT200895

Citation:

Qinglong ZHANG, Yuming WANG, Erwei CHENG, Yazhou CHEN, Liyun MA, Zhe ZHANG. Investigation on Prediction Method of Electromagnetic Interference in the Tracking Loop of Navigation Receiver[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3656-3661. doi: 10.11999/JEIT200895

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Investigation on Prediction Method of Electromagnetic Interference in the Tracking Loop of Navigation Receiver

doi: 10.11999/JEIT200895

1.
National Key Laboratory of Electromagnetic Environment Effects, Army Engineering University Shijiazhuang Campus, Shijiazhuang 050003, China
2.
The Second Flight Training Base, Naval Aeronautical University, Changzhi 046000, China

Received Date: 2020-10-19
Rev Recd Date: 2021-03-15

Available Online: 2021-03-29

Publish Date: 2021-12-21

Abstract

Abstract

In view of the phenomenon that the navigation receiver loses tracking of the satellites due to ElectroMagnetic Interference (EMI) in the complex battlefield electromagnetic environment, the effect prediction model of the navigation receiver’ tracking loop, when facing in-band and out-of-band dual-frequency interference is studied. Through the analysis of the blocking mechanism of the receiver’s RF (Radio Frequency) front-end, the gain formula of the RF front-end signal is deduced by the method of vector analysis, and combined with the relevant processing of the receiver, the effect prediction model under out-of-band and in-band dual-frequency interference is obtained. Then, by using the Carrier-to-Noise ratio (C/N₀) threshold as the criterion for loss of lock, a dual-frequency interference effect experiment is carried out. The experiment results show that the above model can predict the state of satellite tracking inside the receiver, whose prediction error is less than ±1 dB, and it is equally applicable to narrowband and wideband interference signals.

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References(18)

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