Discussion on the fitting of GPS broadcast ephemeris parameters
Cui Xian · Cehui kexue · 2006
After a review of the fitting of GPS broadcast ephemeris parameters, the influence function (IF) of the harmony term (HT) to the partial derivative is presented based on the partial derivative of satellite position with respect to ephemeris parameters. The results indicate that taking into account harmony terms cannot improve the precision and efficiency of GPS broadcast ephemeris parameter fitting, so the harmony term can be ignored in application.