3.1. Horizontal Position Accuracy
3.2. Differential Global Positioning System (DGPS)
3.2.1. DGPS Specifications
3.2.2. DGPS Site Confirmation
3.2.3. Other GPS Techniques
4.1. General Project Requirements and Scope
4.1.1. Scope
4.1.2. Objectives
4.1.3. Planning and Preliminary Tidal Zoning
4.1.4. NOS Control Stations and Data Quality Monitoring
4.1.5. General Data and Reference Datum Requirements
4.1.6. Error Budget Considerations
4.2. Data Collection and Field Work
4.2.1. Water Level Station Requirements
4.2.2. Water Level Measurement Systems and Data Transmissions
4.2.3. Station Installation, Operation and Removal
4.2.4. Tide Staffs
4.2.5. Bench Marks and Leveling
4.2.6. Water Level Station Documentation
4.2.7. Additional Field Requirements
4.2.8. Geodetic Connections and Datums Relationship
4.2.9. NAVD 88 Level Tie
4.2.10. GPS Observations
4.2.11. North American Datum 1983 (NAD83) GPS Tie
4.2.12. GPS Data Processing Using OPUS
4.2.13. OPUS DB Preliminary Information
4.2.14. NAVD 88 GPS Tie
4.3. Data Processing and Reduction
4.3.1. Data Quality Control
4.3.2. Data Processing and Tabulation of the Tide
4.3.3. Computation of Monthly Means
4.3.4. Data Editing and Gap Filling Specifications
4.4. Computation of Tidal Datums and Water Level Datums
4.4.1. National Tidal Datum Epoch
4.4.2. Computational Procedures
4.4.3. Tidal Datum Recovery
4.4.4. Quality Control
4.5. Final Zoning and Tide Reducers
4.5.1. Water Level Station Summaries
4.5.2. Construction of Final Tidal Zoning Schemes
4.5.3. Tide Reducer Files and Final Tide Note
4.6. Data Submission Requirements
4.6.1. Station Documentation
4.6.2. GPS Project Documentation
4.6.3. Water Level Data
4.6.4. Tabulations and Tidal Datums
4.6.5. Tide Reducers and Final Zoning and Final Tide Note
4.6.6. Submission and Deliverables - Documents and Time Lines
4.7. Guidelines and References
8.1. Field Reports
8.1.1. Progress Sketch and Survey Outline
8.1.2. Danger to Navigation Report
8.1.2.1. Charted Feature Removal Request
8.1.3. Descriptive Report (DR)
8.1.4. Descriptive Report Supplemental Reports
8.1.4.1. Data Acquisition and PRocessing Report
8.1.4.2. Horizontal and Vertical Control Report
8.2. S-57 Feature File
8.2.1. S-57 Attribution
8.2.2. Cartographic Specifications and Conventions
8.3. Side Scan Sonar
8.3.1. Side Scan Sonar Mosaic
8.3.2. Side Scan Sonar Contact List
8.3.3. Data Acquisition and processing Abstracts
8.4. Digital Data Files
8.4.1. Media
8.4.2. Single-beam Data
8.4.3. Shallow-Water Multibeam and Lidar Data
8.4.4. Side Scan Sonar Data
8.4.5. Other Data