STUDY ON AUTOMIC PREDICTION OF TIME BASED ON INTERPOLATION MODEL WITH TCHEBYTCHEV POLYNOMIAIS
Liu Xiaogang 1,2) ;Wu Xiaoping 1) ;Tian Yanfeng 1,3) ; and Deng Yu 1,4)
1)Institute of Surveying and Mapping, Information and Engineering University, Zhengzhou 4500522)Key Laboratory of GNSS Research (Wuhan University), Ministry of Education, Wuhan 4300793)73603 troops, Nanjing 2100494)78155 troops, Chengdu 610062
Abstract：Two basic models, general polynomial model and Tchebytchev polynomials model which are used to predict the time deviation of atomic clock, are discussed. One day’s clock bias of three different GPS satellite’s clocks, which are launched in different period, are predicted by using of the precise clock bias data supplied by IGS, and the prediction results of clock bias are analyzed and compared, and the results show that when using the Interpolation model with Tchebytchev polynomials to predict the time deviation of atomic clock, the prediction results’ differences are very small compared with the results of general polynomial model. Therefore, the general polynomial model can be instead of by interpolation model with Tchebytchev polynomials to predict the time deviation of atomic clock.
Liu Xiaogang,Wu Xiaoping ,Tian Yanfeng et al. STUDY ON AUTOMIC PREDICTION OF TIME BASED ON INTERPOLATION MODEL WITH TCHEBYTCHEV POLYNOMIAIS[J]. jgg, 2010, 30(1): 77-82.
