The iron in the ship caused a deviation of the magnetic needle of the compass.
这块在船上得铁引起罗盘磁针的背离。
2
To calibrate and compensate the compass error of magnetic heading in a carrier with constant pitch Angle, the deviation compensation algorithm (DCA) for magneticdeviation compensation is put forward.
The carrier magnetic disturbance which make magneticdeviation of the navigation equipment and influence geomagnetic measurement precision has been a difficult problem at all times.