CAJ | 학술논문

GPS精密单点定位技术是今后GPS测量技术的发展趋势，其中，卫星轨道预报与钟差预报是该技术的关键。如今，IGS组织已能够提供短时高精度的卫星轨道预报，但在钟差预报方面尚无法达到实时定位的要求，所以建立足够精度的卫星钟差预报模型尤为重要。文章根据常用的二次多项式短期预报模型，提出新的参数估计方法---总体最小二乘估计，并得出该方法能进一步提高二次多项式模型预报精度的结论。
GPS정밀단점정위기술시금후GPS측량기술적발전추세，기중，위성궤도예보여종차예보시해기술적관건。여금，IGS조직이능구제공단시고정도적위성궤도예보，단재종차예보방면상무법체도실시정위적요구，소이건립족구정도적위성종차예보모형우위중요。문장근거상용적이차다항식단기예보모형，제출신적삼수고계방법---총체최소이승고계，병득출해방법능진일보제고이차다항식모형예보정도적결론。
GPS Precise Point Positioning technology is the future development trend of GPS measurement technology. In which, the satellite orbit prediction and clock forecasting is the key of the technology. Nowdays, IGS could provide short-term high-precision satellite orbit prediction, but the clock is still poor forecasting can not achieve real-time positioning requirements, therefor the satellite clock error prediction model is particularly important to establish sufficient accuracy. In this paper, based on common quadratic polynomial short-term forecasting model, a new parameter estimation method - total least squares estimation have been put forward, and draw over the forecast accuracy of the method of least squares parameter estimation forecast higher accuracy results.