一种气压测高辅助下的地面移动网定位方法

Terrestrial Mobile Network Positioning Method Assisted by Barometric Altimetry Technology

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。

Due to the poor geometric of base stations and errors of NLOS and frepuent positioning error, modem 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 cor- rection 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 ig- nored, and finally obtains high positioning accuracy.