摘要
随着导航卫星定位系统多频率的广泛应用,三频载波相位组合可以形成很多具有长波长、弱电离层、低噪声的线性组合。这些特性可有效地实现整周模糊度值的快速确定并削弱电离层延迟的影响。由于组合观测值需保留模糊度的整周特性,所以组合系数要取整数。提出整数规划算法,以组合观测值的波长为目标函数,以弱电离层延迟和弱观测噪声等为约束条件建立整数规划数学模型,从而求解满足一定条件的全局最优整数解。GPS数据分析表明,整数规划算法能较好地应用于三频组合观测值确定。
With the wide application of the multi-frequency of GNSS,Triple-frequency phase can form a lot of long-wavelength,weak ionospheric delay and low-noise linear combinations.These features can effectively make the value of ambiguity to be quickly identified and the impact of ionospheric delay to be weakened.As the ambiguity of combination observation is necessary to be an integer,every combination coefficient so as to be an integer.The integer programming algorithm is presented,adopting the wavelength of combination observation as the objective function and weak ionospheric delay and low-noise of observation as the constraint conditions for the establishment of integer programming mathematical model in order to obtain global optimal integer solution.GPS data analysis shows that integer programming algorithm to determine the triple-frequency combination observation is a valuable algorithm.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第6期116-119,共4页
Journal of Geodesy and Geodynamics
关键词
三频
组合观测值
整数规划
目标函数
电离层延迟
triple-frequency
combination observation
integer programming
objective function
ionospheric delay
