Electromagnetic Imaging of Passive Intermodulation Sources Based on Virtual Array Expansion Synchronous Imaging Compressed Sensing
Abstract
:1. Introduction
- (1)
- The proposed method can solve the problem of the large peak area at the PIM source location in the imaging results and can obtain imaging results with smaller peak areas with smaller computational effort.
- (2)
- The proposed method solves the problem that a smaller number of antennas cannot locate multiple PIM sources. The method solves the flooding problem with higher localization accuracy.
- (3)
- The proposed method solves the problem of the low energy share of the PIM source location in the imaging results. The solution to this problem can make the PIM source location in the imaging results have more focused and more accurate positioning.
2. Signal Model for Detecting PIMs
2.1. Coprime Array
2.2. UWB-CS
3. The Proposed Improved CS Method
3.1. Transmission Matrix Frequency Selection
3.2. Fuzzy Synchronous Principle
3.3. SI-CS Method
3.4. Quantitative Indicators for Imaging Quality
4. Simulation Results and Discussion
4.1. A Single Target
4.2. Double Targets
4.3. Multiple Targets
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Liu, S.; Liang, M.; Cheng, Z.; Li, X.; Ma, M.; Liang, F.; Zhao, D. Electromagnetic Imaging of Passive Intermodulation Sources Based on Virtual Array Expansion Synchronous Imaging Compressed Sensing. Electronics 2023, 12, 1653. https://doi.org/10.3390/electronics12071653
Liu S, Liang M, Cheng Z, Li X, Ma M, Liang F, Zhao D. Electromagnetic Imaging of Passive Intermodulation Sources Based on Virtual Array Expansion Synchronous Imaging Compressed Sensing. Electronics. 2023; 12(7):1653. https://doi.org/10.3390/electronics12071653
Chicago/Turabian StyleLiu, Siyuan, Musheng Liang, Zihan Cheng, Xinjie Li, Menglu Ma, Feng Liang, and Deshuang Zhao. 2023. "Electromagnetic Imaging of Passive Intermodulation Sources Based on Virtual Array Expansion Synchronous Imaging Compressed Sensing" Electronics 12, no. 7: 1653. https://doi.org/10.3390/electronics12071653
APA StyleLiu, S., Liang, M., Cheng, Z., Li, X., Ma, M., Liang, F., & Zhao, D. (2023). Electromagnetic Imaging of Passive Intermodulation Sources Based on Virtual Array Expansion Synchronous Imaging Compressed Sensing. Electronics, 12(7), 1653. https://doi.org/10.3390/electronics12071653