空间科学学报2017，Vol.37Issue(2)：214-221,8.DOI:10.11728/cjss2017.02.214
GPS16参数广播星历改进参数的变化规律分析
Analysis of the Changing Regularity of Improved Parameters of 16-parameter GPS Broadcast Ephemeris
摘要
Abstract
A new 18-parameter GPS broadcast ephemeris improved on the basis of 16-parameter GPS broadcast ephemeris is introduced in the GPS interface control document issued in 2004.But the improved reasons have not been analyzed.In this paper,the fitting algorithm of 16-parameter GPS broadcast ephemeris is briefly introduced,the differences of the two kinds of GPS broadcast ephemeris parameters are compared,and the change regularity and properties of the improved parameters are analyzed.Calculation results show that the improved parameters of 16-parameter GPS broadcast ephemeris have obvious periodic variation characteristics with a period of about 12 hours and 13.5 days,and the newly proposed 18-parameter GPS broadcast ephemeris can better approach the real orbit of GPS satellites.关键词
GPS/广播星历/最小二乘/周期性Key words
Global positioning system/Broadcast ephemeris/Least square/Periodicity分类
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冯来平,崔先强,贾小林,阮仁桂..GPS16参数广播星历改进参数的变化规律分析[J].空间科学学报,2017,37(2):214-221,8.基金项目
国家自然科学基金项目(41204020)和中国博士后科学基金项目(2013M540641)共同资助 （41204020）
