摘要
Locata定位技术是全球导航卫星系统(GNSS)不可见或不能满足定位需求情况下的定位替代技术。到目前为止的许多研究已经证明,Locata定位技术利用载波相位测量可以提供厘米甚至亚厘米级的定位精度。现在的Locata系统中,其浮点载波相位整周模糊度是在已知精确坐标的位置上采用静态初始化方法得到的。但是在许多实际情况下,Locata的载波相位整周模糊度需要在线解算,在线解算Locata的载波相位整周模糊度过程中,面对观测方程法方程奇异等问题,采用了一种基于Tikhonov正则化原理和LAMBDA搜索方法的在线解算算法。仿真分析表明这种方法可以正确得到Locata的载波整周模糊度解。
Locata positioning technology is the substitute technology of GNSS in the invisible environment or unavailable situation. As is shown by many studies, centimeter-level positioning accuracy can be achieved with carrier phase measurement by Locata positing technology. In Locata system, the float carrier phrase ambiguity can be obtained at a precise coordinate point with the initializing method. However, in many cases, Locata carrier phase integer ambiguity needs to be resolved in real-time. In the real-time resolution of Locata carrier phase integer ambiguity, an online resolution method based on TIKHONOV regularization principle and LAMBDA searching method is used to solve the problems such as singular equation. Simulation analysis shows that correct integer ambiguity resolution can be obtained by using the method.
出处
《电光与控制》
北大核心
2016年第3期77-81,共5页
Electronics Optics & Control
基金
中央高校科技业务项目(3122014P001)
