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To obtain accurate magnetic gradient tensor data, a fast and robust calculation method based on regularized method in frequency domain was proposed. Using the potential field theory, the transform formula in frequency domain was deduced in order to calculate the magnetic gradient tensor from the pre-existing total magnetic anomaly data. By analyzing the filter characteristics of the Vertical vector...
The main factor leading to decline in geomagnetic navigation accuracy is the carrier magnetic field. Based on analyzing the geomagnetic measurement error which caused by UAS carrier magnetic interference geomagnetic field, lead the 12 coefficient compensation model into UAS' compass deviation, which used in the geomagnetic matching navigation on small gesture. In the static condition, use the non-magnetic...
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