Dianlun Zhang

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At first, the basic principle and numerical method of bi-stable stochastic resonance (SR) system was described and the SR beam-forming method with single-frequency signal was studied to verify that the SR system could get a gain to the array element, but not with the Correlation Detection method (matched filter) be used together. Secondly, in order to use a(More)
The acquisition of vessel's speed by using Acoustic Doppler Velocity Log (DVL) is a well-known method. It depends on the estimation of Doppler-shift between the DVL and the seabed. Due to scattering from many different scatterers, a Doppler signal is received with a large variance. The Pulse-pair method estimates the first moment of the Doppler-shift and(More)
This paper presented an algorithm of outliers removed for nonlinear model and the threshold selection method, which was used in ultra-short baseline (USBL) positioning system for the installation of underwater calibration. At first, the assumption that most of the observation points were correct was given. Then a parameter was set up on the data based on(More)
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