Comparison of GPS Antenna Calibration Models and Their Effects in Determination of Precipitable Water Vapors

• 발행기관: 한국항해항만학회
• 저자명: Kwan-Dong Park Jihye Won Jihyun Ha
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2006년도 International Symposium on GPS/GNSS Vol.2, 1~5쪽, 전체 5쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2006.10.25

영문 초록

To get accurate positions of GPS antennas, one should apply phase center variations (PCV) corrections in the data processing. Until recently, relative calibrations, originally proposed by National Geodetic Survey of United States, were the international standard. However, in late 2006, International GNSS Service will switch to absolute calibration methods. In this study, we compared the position differences caused by different PCV models, and their effects on the calculations of Precipitable Water Vapor (PWV) in the atmosphere. Data from ~40 permanent GPS stations in Korea were processed and we found that the vertical position differences reach up to 5 cm, depending on the model selected. Also the PWV values varied quite significantly: the maximum bias in the computed PWV values was ~4 mm.

목차

1. Introduction

2. Theory and Concept of PCV

3. Comparison of PCV Calibrations

4. Results and Discussion

키워드

GPS Global Positioning System Phase Center Water Vapor PWV