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- 2018
全球CGCS2000坐标框架的构建理论研究
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Abstract:
全球坐标参考框架是发展全球卫星导航系统最具重要性的基础设施之一,也是我国空间信息基础设施建设的迫切需求。研究了构建全球CGCS2000(China Geodetic Coordinate System 2000)坐标参考框架的数学模型,研究了采用内约束理论构建全球CGCS2000框架理论和算法,最后证明了构建全球CGCS2000框架的二步法和一步法数学模型在一定条件下等价。内部约束算法根据框架转换参数及其速率变化量最小标准重新定义框架约束条件,经过坐标相似变化得到最佳网形,并保证最佳网形和初始网形的拟合度达到最高,最后得到最优网形中测站坐标估值,并能保持不同观测技术参考框架的内在纯粹性,发挥不同观测技术优势。本文研究结果可完善中国坐标框架构建基础理论体系,对CGCS2000框架的全球化实现提供科学方法
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