航标灯多基站GPS伪距差分定位新方法

A New Method of GPS PR Differential Positioning Based on Several Reference Stations on Navigation Light

针对由于航海环境的复杂性,导致传统的航标灯定位精度不高,容易偏离航道或发生碰撞的问题,根据其定位精度要求提出了一种伪距改正数的线性组合模型。该模型以单基站伪距差分定位为基础,选取3个参考站和一个移动站并将其误差源理想化,在各参考站上利用高精度GPS定位模块测量其概略坐标,通过各参考站的位置关系建立模型。测试结果表明,该方法能有效提高单GPS模块伪距差分定位的精度,且随着参考站数目的增加定位精度大幅提高。

Due to the complication of the navigation situation,the positioning accuracy of the traditional navigation light is not so exact that the waterway is likely deviated or collided.A linear combined model of PR revised number was suggested according to requirements of the positioning accuracy of the navigation light.The model was based on PR differential positioning by single base station.It chose three reference stations and a mobile station while the error source was idealized.At each of the reference stations,the high accuracy DGPS module was used to measure the roughly coordinate and the model was created by the location of the reference stations.The testing results show that this scheme can improve the accuracy of the single GPS module PR differential positioning.The accuracy could be improved significantly by the increased amount of the reference stations.