全球定位系统
全毬定位繫統
전구정위계통
GPS WORLD OF CHINA
2015年
4期
23-27
,共5页
程梦飞%李兆南%史丰丰%王主丰
程夢飛%李兆南%史豐豐%王主豐
정몽비%리조남%사봉봉%왕주봉
授时周期波动%上行时延误差%转发时刻误差%星历预报误差%Sagnac效应修正
授時週期波動%上行時延誤差%轉髮時刻誤差%星歷預報誤差%Sagnac效應脩正
수시주기파동%상행시연오차%전발시각오차%성력예보오차%Sagnac효응수정
Periodic fluctuation of time service%uplink delay error%forwarding time er-ror%ephemeris error%sagnac effect filter
高精度时间传递和同步技术有广泛的应用前景，GEO卫星可以提供高精度的单双向授时服务，但GEO 卫星的单向授时结果存在周期性波动现象，波动周期为日。通过对GEO卫星授时原理和过程的研究可知，星历预报误差、上行时延误差、转发时刻误差是造成GEO卫星单向授时结果周期性波动现象产生的主要因素，另外星历预报误差会对上行时延、转发时刻和下行时延的计算造成影响。
高精度時間傳遞和同步技術有廣汎的應用前景，GEO衛星可以提供高精度的單雙嚮授時服務，但GEO 衛星的單嚮授時結果存在週期性波動現象，波動週期為日。通過對GEO衛星授時原理和過程的研究可知，星歷預報誤差、上行時延誤差、轉髮時刻誤差是造成GEO衛星單嚮授時結果週期性波動現象產生的主要因素，另外星歷預報誤差會對上行時延、轉髮時刻和下行時延的計算造成影響。
고정도시간전체화동보기술유엄범적응용전경，GEO위성가이제공고정도적단쌍향수시복무，단GEO 위성적단향수시결과존재주기성파동현상，파동주기위일。통과대GEO위성수시원리화과정적연구가지，성력예보오차、상행시연오차、전발시각오차시조성GEO위성단향수시결과주기성파동현상산생적주요인소，령외성력예보오차회대상행시연、전발시각화하행시연적계산조성영향。
High‐precision time transfer and synchronization technology has broad appli‐cation prospects .GEO satellite can provide high precision of single and double time service , but the results of the GEO satellite single time service has the phenomenon of periodic fluc‐tuation ,and its fluctuation cycle is one day .Studying on the principle and process of GEO satellite time service ,we know that the main factors of the GEO satellite single time service periodic fluctuation phenomenon are ephemeris error ,uplink delay error and forwarding time error ,,the ephemeris error will impact on the calculation of uplink delay ,forwarding time and downlink delay .According to reasons of periodic fluctuation ,we can design a method to effectively decrease the GEO satellite time service periodic fluctuation .
