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AUV Co-localization Method Based on Generalized Maximum Correlation Entropy and Volumetric Kalman Filter

ActiveCN117741571BComprehensive parametersflexiblePosition fixationHigh level techniquesNonlinear filterAlgorithm
This invention relates to the field of underwater positioning technology, specifically to an AUV cooperative positioning method based on generalized maximum correlation entropy and capacitive Kalman filtering (CKF) that can effectively improve positioning accuracy. This invention employs GMCC and introduces a generalized Gaussian density kernel function to measure the error of the nonlinear filtering algorithm using generalized correlation entropy. The generalized Gaussian kernel function has the advantages of having many parameters, flexible variation, and adaptability. It can achieve the maximum correlation entropy when the error is minimized. Because the generalized Gaussian kernel contains even-order higher moments of the errors of two variables, it can better handle heavy-tailed noise and large outliers. Experimental verification shows that the technical solution of this invention has better robustness and reliability, and can better handle problems such as outliers and heavy-tailed noise interference. Compared with the traditional CKF, this invention can improve positioning accuracy.
Owner:HARBIN INST OF TECH AT WEIHAI

A railway maintenance apparatus

The utility model provides a kind of railway maintenance equipment, the railway maintenance equipment includes frame, two walking wheels, two clamping wheels, lifting assembly and limiting component, two walking wheels are respectively arranged in the length direction of frame two ends, two clamping wheels are respectively arranged in the width direction of frame two sides, clamping wheel is obliquely arranged to be matched with steel rail lower jaw, lifting assembly is connected with frame, lifting assembly is used to adjust the height of clamping wheel, limiting component is spaced apart with lifting assembly, limiting component is used to limit the position of lifting assembly.The railway maintenance equipment of the utility model embodiment has the advantages of compact structure, flexible adjustment and adapt to multiple track types.
Owner:BEIJING ANCHUANGGONGYAN SCI-TECH CO LTD