Development of Real-Time Precise Positioning Algorithm Using GPS L1 Carrier Phase Data

• Main Authors: Jeong-Ho Joh, Byung-Kyu Choi, Jong-Uk Park, Kwan-Dong Park, Hyung-Chul Lim, Pil-Ho Park
• Format: Article
• Language: English
• Published: Korean Space Science Society (KSSS) 2002-12-01
• Series: Journal of Astronomy and Space Sciences
• Subjects: GPS; L1 Phase; RPDAP; L1 RTK
• Online Access: http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2002/v19n4/OJOOBS_2002_v19n4_377.pdf

We have developed Real-time Phase DAta Processor(RPDAP) for GPS L1 carrier. And also, we tested the RPDAP's positioning accuracy compared with results of real time kinematic(RTK) positioning. While quality of the conventional L1 RTK positioning highly depend on receiving condition, the RPDAP can gives more stable positioning result because of different set of common GPS satellites, which searched by elevation mask angle and signal strength. In this paper, we demonstrated characteristics of the RPDAP compared with the L1 RTK technique. And we discussed several improvement ways to apply the RPDAP to precise real-time positioning using low-cost GPS receiver. With correcting the discussed weak points in near future, the RPDAP will be used in the field of precise real-time application, such as precise car navigation and precise personal location services.