摘要
目的研究GAMIT对地球模型的修正和主要误差参数的估计，在CORS系统建立过程中，中、长基线解算方法使基线数据解算更精确．方法方法中利用精密星历，通过GAMIT软件解算沈阳市某地区CORS系统中的基线，与常用徕卡LGO解算出的基线数据进行对比分析．结果在中、长基线解算结果中可以看出，LGO广播星历基线标准化均方根残差σ1在5．22～7．20mm、LGO精密星历基线在σ1 3．02—4．18mm、GAMIT基线σ1在1．06—2．73mm结论中、长基线解算采用广播星历精度较差，精密星历能够较好提高精度，GAMIT通过对地球模型的修正和主要误差参数的估计能够使基线数据解算更精确．
Research on Earth model GAMIT main error correction and parameter estimation in the process of establishing CORS system, enables medium, long baseline solver method more accuracy baseline data. Use of precise ephemeris by GAMIT to solve Shenyang CORS system baseline, Leica LGO solver with common da- ta were compared for accuracy analysis. In the medium and long baseline solver results can be seen, LGO broadcast ephemeris baseline accuracy is between 5.22mm and 7.20mm, LGO precise ephemeris baseline accuracy is between 3.02ram and 4. 18mm,GAMIT is between1.06mm and 2.73mm,The medium and long baseline solver using broadcast ephemeris accuracy is poor, precise ephemeris is able to improve the accura- cy, GAMIT through the Earth and the main error correction model parameter estimation solver enables more accuracy baseline data.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2014年第1期98-103,共6页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(61070024)
辽宁省科学事业公益研究基金项目(2013003005)
