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The gravity model of WGS84 is commonly used in the calculation of gravitational acceleration known as normal gravity vector, but it cannot meet the requirements for high-precision inertial navigation systems because of the gravity anomaly. In this paper, the effects of gravity vertical deviation on navigation accuracy are analyzed and the principle of compensation is studied based on vertical deviation...
GNSS Spoofing is a technique that intentionally fools a receiver into generating incorrect position and/or time solution. A low cost GNSS receiver is added to the widely known GNSS/INS system to achieve effective spoofing detection. Models of pseudorange/carrier phase double difference under normal and spoofing conditions are built and analyzed. With the aid of INS, double difference observations...
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