- 标题
- 摘要
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An anti‐repeater‐jamming approach based on blind source separation for the downlink of satellite communication systems
摘要： In this paper, an anti‐jamming approach is proposed for the downlink of satellite communication systems when encountering a hostile repeater‐jamming. Based on blind source separation, this approach can eliminate repeater‐jamming by separating the mixtures of the communication signals and the repeater‐jamming. Meanwhile, oversampling method is employed to transform the underdetermined mixing of signals into a determined mixing for facilitating the separation. In the simulations, the symbol error ratio (SER) of the separated communication signals can approximate the theory SER, and the anti‐repeater‐jamming capacity can arrive to nearly 28 dB.
关键词： blind source separation,satellite communication,Anti‐jamming,repeater‐jamming,oversampling
更新于2025-09-04 15:30:14
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Ka-band Scintillation on Low-Elevation Satellite-Earth Links in the Arctic; Long-Term Measurements and Improved Modelling
摘要： This paper presents long term scintillation measurements on 20 GHz satellite links at 3 coastal locations in the Norwegian Arctic and compares the results with existing prediction methods. The elevation angles of the three links are 6.6, 10, and 14o respectively. The scintillation levels are highest during the summer months and show large monthly variations at two coastal locations, while the variations are reduced for the island location. The measured scintillation amplitudes are lower than predicted by the ITU-R method. A much modification of the existing methods is proposed, based on the results, giving significantly better annual predictions for the 3 locations in question. Monthly predictions are also improved, if slightly conservative.
关键词： scintillation,satellite communication,radio wave propagation,measurement
更新于2025-09-04 15:30:14