Marine vertical deflection interpolation algorithm based on remove-recovery method
Marine vertical deflection is the basic information of the gravity compensation in inertial navigation system,and the high precision interpolation algorithm of vertical deflection is key element.By combining spatial domain distribution characteristics and frequency domain representation attributes,the marine vertical deflection interpolation algorithm based on remove-recovery method has been analyzed.Taking commonly inverse distance weighting algorithm and Kriging algorithm as examples,the simulation experiment was designed using the earth gravity field model EIGEN-C4 and vertical deflection data computed by shipborne gravity data,The results indicated that when considered frequency domain representation attributes,the precision of Inverse distance weighting algorithm improved 70%and Kriging algorithm improved 20%.The effectiveness of the algorithm presented in this article has been verified,and it can provide technical support for the construction of high-precision and high-resolution marine vertical deflection model.
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