Modeling satellite vehicle passive intermodulation

Raghavan, Srini; Kreng, Jack K.; Ardeshiri, Michelle M.

doi:10.1109/aero.2017.7943641

Cited by 1 publication

(2 citation statements)

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“…Equation (7) shows that as the frequency of the passive intermodulation signal is higher, the localization result error is more minor. However, the smaller the frequency of the passive intermodulation signal, the shorter the length of the measured transmission line.…”

Section: Localization Algorithm For Pim Sourcementioning

confidence: 99%

“…Therefore, the realization of the precise location of the PIM source is an essential prerequisite for stopping and eliminating PIM interference. Previously, passive intermodulation interference caused many satellite communication accidents, such as the U.S. fleet communication satellites, maritime satellites, European maritime satellites, and international communication satellites, which resulted in severe interference to receivers due to passive intermodulation products [4][5][6][7][8]. The communication system is moving in the direction of high-power, high-frequency, and multicarrier systems, and the interference generated by passive intermodulation can no longer be ignored.…”

Section: Introductionmentioning

confidence: 99%

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High-Precision Localization of Passive Intermodulation Source in Radio Frequency Transmission Lines Based on Dual-Frequency Signals

Zhang,

Cheng,

Liang

et al. 2024

Electronics

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With the development of communication technology, the interference from passive intermodulation to the communication system has become increasingly severe. Locating the source of passive intermodulation and then repairing or replacing the device experiencing passive intermodulation is a reliable method. Therefore, this paper proposes a dual-frequency signal localization method based on the principle of phase ranging to accurately locate the passive intermodulation sources in RF cables. This method switches the test signal frequency to obtain the phase of passive intermodulation signals at different frequencies to localize the passive intermodulation source. This paper analyzes the principle of the passive intermodulation localization method based on dual-frequency signals, establishes a localization system for experiments, and finally, analyzes the experimental error to propose an optimization strategy. Through experimental verification, this method can stabilize the positioning error of a passive intermodulation source in a transmission line less than 0.06 m. Meanwhile, this method has high positioning accuracy and the advantages of slight computational complexity, fast positioning speed, and only a small number of requirements on hardware resources. It can work in communication scenarios like satellite and base stations, providing a new technical solution for localizing passive intermodulation interference sources in 5G and 6G communication systems.

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Section: Localization Algorithm For Pim Sourcementioning

confidence: 99%