摘要
GPS精密单点定位技术常用的数学模型是非差模型。在分析常用的3种模型基础上,引入观测方程的差分模型。通过理论分析与实例比较,得到各种差分方法在精度与实时性方面的优缺点,并根据比较结果设计出一种新的差分模型,即二次差——一次差组合模型。试验表明,对比非差模型,新的差分模型的计算收敛速度明显加快,提高幅度约30%。
In GPS precise point positioning, non-difference model is commonly used. Three common models are analyzed. And on this basis, difference models of observations are advanced. Through theoretical analysis and comparison, advantages and disadvantages of each model have been found. Based on comparison result, a new difference model is designed, which is combined by double-difference and single- difference solutions. The empirical results show that this new model obviously accelerates the convergence time rather than non-difference model, which can be increased up to 30%.
出处
《黑龙江工程学院学报》
CAS
2013年第2期1-4,7,共5页
Journal of Heilongjiang Institute of Technology
基金
黑龙江省教育厅科学技术研究项目(12511467)
关键词
GPS精密单点定位
数学模型
差分模型
GPS precise point positioning
mathematical model
difference model
