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- W2016373014 abstract "A new method of underwater passive navigation based on gravity gradient is proposed in this paper. In comparison with some other geophysical characteristics such as gravity or gravity anomaly, gravity gradient which is the second derivative of gravitational potential has better spatial resolution and more sensitive to terrain changes. Through it, the digitally stored gravity gradient maps and real-time gravity gradient measurements can be taken as input information, with gravity gradient linearization techniques and extended Kalman filter, the navigation errors of INS are estimated by using gravity gradient error, therefore the output in the inertial navigation system are corrected. Simulation test has been done and the results show that, the method is effective and efficient for the positioning precision improvement." @default.
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- W2016373014 date "2007-11-15" @default.
- W2016373014 modified "2023-09-25" @default.
- W2016373014 title "New method of underwater passive navigation based on gravity gradient" @default.
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- W2016373014 doi "https://doi.org/10.1117/12.749408" @default.
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