一种气压测高辅助下的地面移动网定位方法

摘要

Due to the poor geometric of base stations and errors of NLOS and frepuent positioning error, modern positioning work is hard. A new method to increase terrestrial mobile network with the barometric altimetry technology is proposesd. The method, based on the local station coordinate system transports the pressure correction information through base stations. Therefore, the three-dimensional positioning problem can be solved. In this way, the restriction imposed by the dilution of precision ( DOP) of terrestrial mobile network can be ignored, and finally obtains high positioning accuracy.%针对现存的地面移动基站几何分布欠佳、NLOS误差过大,定位误差较大,难以满足现代高精度导航定位需求的现状,提出了一种在局域站心坐标系下,通过地面移动通信基站传输气压基点修正信息,利用气压测高技术辅助地面移动网进行定位的新方法.应用此方法,可以精确确定用户垂直方向坐标,并将三维定位问题进行降维解算处理,避免地面移动网几何精度因子DOP较大的限制,从而获得更为理想的定位精度.