Using signals from GLONASS/GPS navigation systems to correct the readings of a digital magnetic compass

The article describes the results obtained from research, manufacture and quality improvement of an inexpensive digital magnetic compass system. Given that the receivers of the global navigation satellite systems (GNSS) signals are not expensive, in order to increase the accuracy and reliability of the compass, in this paper, the authors propose a method to use the signal of the GNSS global positioning system to compare and adjust the azimuth value of the Digital magnetic compass (DMC).