USER’S GUIDE FOR GPS OBSERVATIONS

Short Description
User’s Guide for GPS Observations, Updated March 2007 … This User’s Guide for Global Positioning System (GPS) Observations for the tidal and water …

Website: tidesandcurrents.noaa.gov | Filesize: 2426kb
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Content
USER’S GUIDE
FOR
GPS OBSERVATIONS
Updated March 2007
Requirements and Development Division
Center for Operational Oceanographic Products and Services
National Ocean Service
National Oceanic and Atmospheric AdministrationTABLE OF CONTENTS
1.0 INTRODUCTION………………………………………………………………………………………………… 1
1.1. REFERENCE DOCUMENTS ……………………………………………………………………………………. 1
2.0. EQUIPMENT AND SETUP …………………………………………………………………………………. 2
3.0 GEODETIC CONNECTIONS AND DATUMS RELATIONSHIP…………………………. 3
3.1. LEVEL CONNECTIONS…………………………………………………………………………………………. 3
3.1.1. NAVD88 Level Tie ………………………………………………………………………………………… 3
3.1.2. Leveling at Continuously Operating Reference Stations (CORS) ………………………… 4
3.2. GPS CONNECTIONS ……………………………………………………………………………………………. 5
3.2.1. References……………………………………………………………………………………………………. 5
3.2.2. GPS Observations - Goals and Planning …………………………………………………………. 5
3.2.3. Static Surveys……………………………………………………………………………………………….. 6
3.2.4. Criteria for Bench Mark Selection for GPS Observations ………………………………….. 7
3.2.5. Planning, Position, and Photograph of the GPS Bench Mark …………………………….. 8
3.2.6. Data Collection and setup ……………………………………………………………………………… 9
3.2.7. North American Datum 1983 (NAD83) GPS Tie……………………………………………… 10
3.2.8. GPS Data Processing Using OPUS……………………………………………………………….. 11
3.2.9. OPUS DB Preliminary information……………………………………………………………….. 12
3.2.10. NAVD 88 GPS Tie…………………………………………………………………………………….. 14
4.0 GPS PROJECT DOCUMENTATION AND DATA SUBMISSION ……………………… 14
4.1. DATA SUBMISSION…………………………………………………………………………………………. 15…