Vol. 69

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GSVD-Based Optimal Filtering with Analog Circuits Preprocessing for Interference Suppression in ELF Communication

By Chun-Teng Li, Yu-Zhong Jiang, Fang-Jun Liu, and Ting-Ting Jiang
Progress In Electromagnetics Research M, Vol. 69, 87-96, 2018


In order to effectively improve the communication quality in the extremely-low frequency (ELF) communication, an integrated model of the analog circuit combined with the multi-channel array algorithm is constructed, and a highly sensitive magnetic sensor is designed. An array algorithm based on generalized singular value decomposition is proposed to find the optimal filter coefficient, and then to achieve the purpose of suppressing interference in ELF communication. In the manufacture of magnetic antenna, the method of partitioned windings divided by acrylic effectively reduces the distributed capacitance of the magnetic antenna, and the rational design of the amplification filter circuit lays the foundation for the interference suppression in the next step. Specific process of the proposed algorithm is deduced. The corresponding evaluation indices are given, and the correlation among evaluation indice is expounded. The simulated and experimental results are discussed respectively. The experimental setups are designed and presented. The results show that no matter which the simulated signal or the experimental data is, the proposed algorithm can effectively suppress the interference, and the output signal to interference ratio is increased by 30 dB.


Chun-Teng Li, Yu-Zhong Jiang, Fang-Jun Liu, and Ting-Ting Jiang, "GSVD-Based Optimal Filtering with Analog Circuits Preprocessing for Interference Suppression in ELF Communication," Progress In Electromagnetics Research M, Vol. 69, 87-96, 2018.


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