Real time self differential global positioning system and method for a moving station in a local area, and terminal global positioning system using the same

摘要

A real-time self Differential Global Positioning System (DGPS) is developed for positioning a moving station in a local area. This DGPS system enables not only to minimize the error ranges without any additional expansive transmitting-receiving equipment, but also to calculate an accurate correcting value through a DGPS receiver. A method of the real-time self DGPS system comprises the steps of: (1) receiving a GPS signal of moving station contained data of satellite time and pre-measured moving station position, (2) calculating a correcting value from the moving station, (3) positioning the accurate moving station according to the correcting value and the GPS signal of moving station.