首页>
外国专利>
Method for using external constraints to improve the speed and reliability of phase ambiguity resolution in real-time kinematic initialization
Method for using external constraints to improve the speed and reliability of phase ambiguity resolution in real-time kinematic initialization
展开▼
机译:运动学实时初始化中利用外部约束提高相位模糊度求解的速度和可靠性的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for obtaining integer ambiguity solutions based on externally provided constraints, e.g., altitude. Such constraints are useful in reducing the computational burden created by the search problem, and using constraints is particularly more effective when a more limited number of satellite vehicles are visible than is ordinarily the case. The constraints are exercised in a search algorithm. As the branches of the integer ambiguity search tree are traversed, an additional test is used to determine if the current search candidate is compatible with such external constraint. Because a three-dimensional position is associated with each search candidate, the branch clipping is straightforward. The ambiguity candidates are each only acceptable if their locations in space are within a confidence region bound set determined from the external constraint. Any sensor that can provide any combination of x, y, or z position information that is better than that obtainable from GPS code phase is a candidate source of such external constraints.
展开▼