Long Range Differential GPS and the Concepts of Chinese Plans to Establish BroadArea Networks

摘要

This article describes the general status of radio navigation and positioningsystems. Stress is laid on introducing GPS global navigation systems, putting forward the use of methods associated with differential GPS in order to raise positioning precisions and carry out long range differential tests from Xian to Luoyang and Jinxi. Recommendations are made to set up a Chinese differential GPS network.