To calibrate and compensate the compass error of magnetic heading in a carrier with constant pitch Angle, the deviation compensation algorithm (DCA) for magnetic deviation compensation is put forward.
The carrier magnetic disturbance which make magnetic deviation of the navigation equipment and influence geomagnetic measurement precision has been a difficult problem at all times.
载体磁场对地磁测量的干扰，一直是造成导航设备罗差、影响地磁测量精度的技术难题。
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The algorithm features the large estimation range for carrier frequency deviation and high estimation accuracy.