Abstract: In order to apply the navigation solution output from the satellite navigation receiver to applications such as aircraft navigation and weapon launching testing, it is necessary to convert the geodetic height of the navigation solution to coarse normal height, but the demands for the coarse normal height in different application fields are different. To meet the normal height estimation requirements of different precisions, and to support the actual satellite navigation receiver application with low running time and storage space overhead, this paper proposes a coarse normal height estimation algorithm based on the simplified EGM96 model. Adopting the 360-degree 360-order EGM96 Earth gravity field model and the 2190-degree 2159-order EGM2008 Earth gravity field model, the running time and calculation accuracy of the coarse normal height estimation algorithm are evaluated. The test and comparative analysis of the grid points in the global region and the Asia-Pacific region show that the coarse normal height estimation algorithm can obtain the coarse normal height at different levels of accuracy, meeting the accuracy and timeliness requirements of the coarse normal height estimation with the satellite navigation receiver in the Asia-Pacific region and the global region.