A Biomimetic Very Low Frequency(VLF) Active Electrolocation System Based on FFT Feature Extraction Localization Algorithm

doi:10.3901/JME.2016.02.157

Abstract

Abstract: The idea of active electrolocation comes from biomimetic research. The weakly electric fish, which was found by biological researchers, could hunt and navigate without visual cues by sensing perturbations of a self-generated electric field. The ability to detect, characterize and locate objects using self-generated electric fields is called active electrolocation. An active underwater electrolocation experimental platform has been designed. In order to realize the automatic locating purpose by this platform, the experimental characteristics of the active underwater electrolocation system for different objects in different water environment in very low frequency(VLF) inspiriting electric filed were researched. A localization algorithm base on FFT for the active underwater electrolocalization is designed. Based on this platform and the localization algorithm, the precise localization of underwater objects with different materials in water environment with different electrical conductivity was realized. A prototype of VLF active underwater electrolocalization base on FFT method is developed. The feasibility and effectiveness of the active underwater electrolocalization system by our method have been validated by this prototype. It provides a technology foundation of the further engineering application and the following related research for the active underwater electrolocation system.

Key words: active underwater electrolocation, characteristic research, FFT, localization algorithm, very low frequency (VLF)

CLC Number:

TN966

PENG Jiegang, YONG Tao, WANG Wenlong. A Biomimetic Very Low Frequency(VLF) Active Electrolocation System Based on FFT Feature Extraction Localization Algorithm[J]. Journal of Mechanical Engineering, 2016, 52(2): 157-165.

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