海洋测绘2011，Vol.31Issue(1)：20-22,27,4.
GPS广播星历的时间序列分析
Time Series Analysis of GPS Broadcast Ephemeris
摘要
Abstract
The time series of broadcast ephemeris for last 15 years are studied. Six GPS satellites are selected,which include 1 Block Ⅱ, 2 Block IIA, 2 Block IIR, and Ⅰ Block IIR-M. We focus on six Kepler parameters, which include semi-major axis of orbital ellipse ( a), eccentricity of the orbit ( e ), inclination ( i ), the right ascension of the ascending node ( Ω), argument of perigee (ω) and true anomaly ( M ). The chart of time series are shown in the paper, the maximum values and the trends of the series are found. Obviously trends are existed in the time series of a,e,i,Ω,and ω. The time series are transformed into frequency domain using the FFT. There is a main period of about 280 days in the a,e,ω,and M,140 days in the i and 1 month in the Ω.关键词
全球定位系统/广播星历/时间序列分析/功率谱分析/趋势项分析Key words
GPS/ broadcast ephemeris/ time series analysis/ power spectral analysis/ trend analysis分类
天文与地球科学引用本文复制引用
李英冰,夏敬潮..GPS广播星历的时间序列分析[J].海洋测绘,2011,31(1):20-22,27,4.基金项目
国家高技术研究发展计划863专题(2009AA12Z320). （2009AA12Z320）
