中文摘要：

提高GPS手机的定位精度具有很广阔的应用前景,本文研究GPS手机的实时定位差分系统的设计和实现方法。该系统采用基准站广播位置差分值、移动站实时处理的差分GPS方案,其主要优点是定位精度高、改正速度快、设备简单、操作方便;分析了位置差分GPS的定位误差,给出了测量结果。理论分析和测试结果都表明,该系统的差分定位精度比手机GPS直接定位相对提高31m左右,定位误差达4m左右,能够满足相关领域测量精度要求。

英文摘要：

Due to its popularity, GPS phone is used to replace expensive professional GPS receiver m some nelas on less accuracy, which has became a trend. Improving GPS positioning accuracy of mobile phone has a wide application prospects. This paper stud- ied on the real-time differential positioning system based on GPS phone, which uses position difference algorithm that base station broadcasts DGPS corrections and roving station real-time performs. It has some advantages, such as the higher positioning accuracy, the faster correction speed, the equipment is simple and easy to use. This paper analyzed the position error of DGPS and calculated the measured results. The test result indicated that the DGPS positioning accuracy improved 31 meters than absolute positioning based on GPS phone, positioning error of 4 meters, which could meet the accuracy requirement in some fields.