List of Figures
===============

**Frontmatter**

* :numref:`Figuref-1.png`: OPUS Projects supports the submission of GNSS survey data to NGS for publication on Datasheets

**Quick Start Guide**

* :numref:`FigureQS-1.jpg`: NGS Survey Project Proposal Form
* :numref:`FigureQS-10gvx.png`: GVX Vector Listing
* :numref:`FigureQS-11gvx.png`: Scatter Plots for Baseline "brun-mas2"
* :numref:`FigureQS-12gvx.png`: "Update GVX" Button (highlighted in yellow)
* :numref:`FigureQS-13gvx.png`: GVX Baseline Statistics Window
* :numref:`FigureQS-14gvx.png`: "Set up Adjustment" Button (highlighted in yellow)
* :numref:`FigureQS-15gvx.png`: Horizontal-Free Adjustment Available Solutions
* :numref:`FigureQS-16gvx.png`: Horizontal-Free Adjustment Settings
* :numref:`FigureQS-17gvx.png`: Map Window with Adjustment Results
* :numref:`FigureQS-18gvx.png`: Map Window with Mark Info Tooltip
* :numref:`FigureQS-19gvx.png`: Mark Page
* :numref:`FigureQS-1gvx.png`: "Preferences" Button (highlighted in yellow)
* :numref:`FigureQS-2.jpg`: Input screen to create a project in OPUS Projects
* :numref:`FigureQS-20gvx.png`: "Show File" Window
* :numref:`FigureQS-2gvx.png`: "Data & Solution Quality Thresholds" Window
* :numref:`FigureQS-3.jpg`: Location of the Preferences button on the OP Manager's Page
* :numref:`FigureQS-3gvx.png`: "Upload GNSS Vectors" Button (highlighted in yellow)
* :numref:`FigureQS-4a.jpg`: Location of upload descriptions and field log buttons on the OP Manager's Page
* :numref:`FigureQS-4b.jpg`: Upload a photo button on the user mark page
* :numref:`FigureQS-4gvx.png`: Upload GNSS Vectors Window
* :numref:`FigureQS-5.jpg`: OPUS GNSS data file upload page
* :numref:`FigureQS-5gvx.png`: GVX-file Selection Confirmation
* :numref:`FigureQS-6.jpg`: OPUS single file processing results are available under "Show File" and on the individual user mark page
* :numref:`FigureQS-6gvx.png`: "Upload GNSS Vector (.gvx) File" Button (highlighted in yellow)
* :numref:`FigureQS-7.jpg`: Add/Delete CORS pop-up window
* :numref:`FigureQS-7gvx.png`: Map Display with GNSS Vectors
* :numref:`FigureQS-8.jpg`: Session processing sequence
* :numref:`FigureQS-8gvx.png`: Vectors for Baseline "e087-umbc"
* :numref:`FigureQS-9.jpg`: Network adjustment window showing sequence of five network adjustments when a NGS Tracking ID is used.
* :numref:`FigureQS-9gvx.png`: Repeat Measurements Scatter Plot

**1. Introduction**

* :numref:`Figure1-1.PNG`: Sample OPUS Projects Manager's Page showing all five network adjustments
* :numref:`Figure1-2.jpg`: OPUS Projects Create, Session, and Manager access page
* :numref:`Figure1-3.png`: Conceptual diagram of OPUS Projects workflow

**2. NGS Survey Proposal**

* :numref:`Figure2-1.jpg`: NGS home page showing how to access NGS Survey Project Proposal Form
* :numref:`Figure2-2.jpg`: The NGS Survey Project Proposal Form

**3. Create Your Project in OP**

* :numref:`Figure3-1.jpg`: Access to OPUS Projects by way of the OPUS Front Page
* :numref:`Figure3-2.jpg`: Create New Project
* :numref:`Figure3-3.jpg`: \* Fields, Information to Enter
* :numref:`Figure3-4.jpg`: Click Map
* :numref:`Figure3-5.jpg`: Create Project
* :numref:`Figure3-6.jpg`: Project Creation Confirmation Report

**4. Review and Edit Project Preferences**

* :numref:`Figure4-1.jpg`: Review and Edit Project Preferences
* :numref:`Figure4-2.jpg`: Save Project Preferences
* :numref:`Figure4-3.jpg`: Project Title, ID and Keywords Report
* :numref:`Figure4-4.jpg`: CC'ing Team Members
* :numref:`Figure4-5.jpg`: Data & Solution Quality Thresholds
* :numref:`Figure4-6.jpg`: Data Processing Defaults
* :numref:`Figure4-7.jpg`: Session Definition
* :numref:`Figure4-8.jpg`: Mark Co-location Definition Settings
* :numref:`Figure4-9.jpg`: Saving Your Preferences

**5. Naming Files Correctly for Best Results in OP**

* :numref:`Figure5-1.jpg`: RINEX File Header
* :numref:`Figure5-2.jpg`: Close-up, Eye-level and the Horizon

**6. Loading GNSS Observation Files**

* :numref:`Figure6-1.jpg`: OPUS processing customization options
* :numref:`Figure6-10.jpg`: Click on a user marks for access to the corresponding Mark page
* :numref:`Figure6-11.jpg`: User Mark web page
* :numref:`Figure6-2.jpg`: Project Identifier Option
* :numref:`Figure6-3.jpg`: Options Customization Confirmation Report, "Skip Description" National Spatial Reference Network Inclusion or Not
* :numref:`Figure6-4.jpg`: Data upload verification email indicating a project preference was not met
* :numref:`Figure6-5.jpg`: Rejection of an upload to OPUS providing an explanation of probably cause
* :numref:`Figure6-6.jpg`: Show File button to access all solution reports
* :numref:`Figure6-7.jpg`: OPUS Solution results
* :numref:`Figure6-8.jpg`: Manager's Page, showing information on data files associated with a user mark
* :numref:`Figure6-9.jpg`: Manager's Page showing "Occupation" information from the "ALL OPUS Results" Report Table

**7. Walking Through OP Visualizations**

* :numref:`Figure7-1.jpg`: The Project Manager's web page
* :numref:`Figure7-10.jpg`: The Controls bar
* :numref:`Figure7-11.jpg`: Top page control options
* :numref:`Figure7-12.jpg`: Preferences button on the Controls bar
* :numref:`Figure7-13.jpg`: Project List button on the Controls bar
* :numref:`Figure7-14.jpg`: Solutions button on the Controls bar
* :numref:`Figure7-15.jpg`: Manage Solutions pop-up window
* :numref:`Figure7-16.jpg`: Add Tracking ID button on the Controls bar
* :numref:`Figure7-17.jpg`: Attach NGS Project Tracking ID pop-up window
* :numref:`Figure7-18.jpg`: Show File button on the Controls bar
* :numref:`Figure7-19.jpg`: Pop-up window showing a sample solution from a processed session
* :numref:`Figure7-2.jpg`: The Notices banner on the OPUS Projects Manager's Page
* :numref:`Figure7-20.jpg`: Send Email button on the Controls bar
* :numref:`Figure7-21.jpg`: Send Email Message pop-up window
* :numref:`Figure7-22.jpg`: Upload Description button on the Controls bar
* :numref:`Figure7-23.jpg`: Choose WinDesc Description Files for loading into project (pop-up window)
* :numref:`Figure7-24.jpg`: Upload Field Logs button on the Controls bar
* :numref:`Figure7-25.jpg`: Choose Field Log to upload pop-up window
* :numref:`Figure7-26.jpg`: Refresh PID Information button on the Controls bar
* :numref:`Figure7-27.jpg`: Confirmation or Cancel PID Refresh
* :numref:`Figure7-28.jpg`: Setup Adjustment button on the Controls bar
* :numref:`Figure7-29.jpg`: Setup Adjustment Type, Include Available Solutions pop-up window
* :numref:`Figure7-3.jpg`: Drop-down menu location for displaying results on the Manger's Page
* :numref:`Figure7-30.jpg`: Upload Project Report button on the Controls bar
* :numref:`Figure7-31.jpg`: Review and Submit to NGS button on the Controls bar
* :numref:`Figure7-32.jpg`: Delete Project button on the Controls bar
* :numref:`Figure7-33.jpg`: Delete Project confirmation pop-up window
* :numref:`Figure7-34.jpg`: MARKS and Sessions Table showing summary occupation data for all sessions
* :numref:`Figure7-35.jpg`: Solution Statistics for All Sessions Table that can be displayed on the Manager's Page
* :numref:`Figure7-36.jpg`: Symbology for distinguishing between user marks, CORSs, and baselines
* :numref:`Figure7-37.jpg`: Add Marks and Add/Delete CORS buttons on the Manger's Page
* :numref:`Figure7-38.jpg`: Reminder pop-up window for uploading observation files to the project through the OPUS upload page
* :numref:`Figure7-39.jpg`: The Add/Del CORS management pop-up window
* :numref:`Figure7-4.jpg`: Map zooming toggles
* :numref:`Figure7-40.jpg`: Submitting Comments to & Asking Questions of the OPUS team
* :numref:`Figure7-41.jpg`: Restricted access to session processing
* :numref:`Figure7-42.jpg`: Sessions Page prior to session processing
* :numref:`Figure7-43.jpg`: Solution Quality Indicators
* :numref:`Figure7-44.jpg`: Session solution quality indicators showing a threshold exceeded
* :numref:`Figure7-45.jpg`: Satellite Data Availability
* :numref:`Figure7-46.jpg`: The Set up Processing button on the Session page Controls bar
* :numref:`Figure7-47.jpg`: Accessing a mark page from the Manager's Page
* :numref:`Figure7-48.jpg`: Example mark page
* :numref:`Figure7-49.jpg`: Mark page toggling from the map
* :numref:`Figure7-5.jpg`: Map background options
* :numref:`Figure7-50.jpg`: Mark page zoom controls
* :numref:`Figure7-51.jpg`: Datasheet Retrieval by way of a user mark with a PID in the NG database
* :numref:`Figure7-52.jpg`: Show File button on the mark page Controls bar
* :numref:`Figure7-53.jpg`: OPUS Solution Report for a user mark
* :numref:`Figure7-54.jpg`: The Change Mark ID button on the Mark page Controls panel
* :numref:`Figure7-55.jpg`: Change Mark ID pop-up window
* :numref:`Figure7-56.jpg`: The Remove Mark button on the Mark page Controls bar
* :numref:`Figure7-57.jpg`: Confirmation pop-up window for removing a mark from the project
* :numref:`Figure7-58.jpg`: Mark Description Summary
* :numref:`Figure7-59.jpg`: Upload A Photo button within the mark description summary
* :numref:`Figure7-6.jpg`: Mark ID shown by hovering over mark
* :numref:`Figure7-60.jpg`: Upload photos pop-up window
* :numref:`Figure7-61.jpg`: Example showing successfully loaded photos on a mark page
* :numref:`Figure7-62.jpg`: Save Description button within the mark description summary
* :numref:`Figure7-63.jpg`: Occupation information on a mark page
* :numref:`Figure7-64.jpg`: Manage Data Files button on the mark occupations table
* :numref:`Figure7-65.jpg`: Manage a mark's data file pop-up window
* :numref:`Figure7-66.jpg`: Save Occupations button on the mark occupations table
* :numref:`Figure7-67.jpg`: Manage Coordinates button on the mark processing results table
* :numref:`Figure7-68.jpg`: Manage a mark's coordinate pop-up window showing coordinates, reference frame, and assumed errors (sigmas)
* :numref:`Figure7-7.jpg`: Mark data information shown when clicking on a user mark icon
* :numref:`Figure7-8.jpg`: CORS ID shown when hovering over a CORS
* :numref:`Figure7-9.jpg`: CORS data information shown when clicking on the CORS icon

**8. Mark Descriptions**

* :numref:`Figure8-1.jpg`: WinDesc program main screen

**9. Selecting CORS**

* :numref:`Figure9-1.jpg`: Add/Delete CORS button on the project map
* :numref:`Figure9-10.jpg`: Example of a CORS coordinates page showing reference to the CORS monument
* :numref:`Figure9-11.jpg`: Example of a CORS position referencing the monument
* :numref:`Figure9-12.jpg`: Example of a CORS position referencing the Antenna Reference Point (ARP)
* :numref:`Figure9-13.jpg`: CORS network accuracy shown on the station's datasheet
* :numref:`Figure9-14.jpg`: Example of CORSs plotted with respect to a 250 km radius from the centroid of the project
* :numref:`Figure9-15.jpg`: CORS map showing CORSs plotted with respect to a 250 km radius from the centroid of the project
* :numref:`Figure9-16.jpg`: Example of a CORS short-term plot showing both bias and random error
* :numref:`Figure9-17.jpg`: Example of a short-term CORS plot exhibiting little bias and low error
* :numref:`Figure9-18.jpg`: Screen captures showing the steps used in adding a CORS from the Manager's Page (see 7.1.7)
* :numref:`Figure9-2.jpg`: Add/Delete CORS pop-up window
* :numref:`Figure9-3.jpg`: CORS information bubble on the Add/Delete CORS window
* :numref:`Figure9-4.jpg`: List of all CORS included in the project as seen on the Manager's Page
* :numref:`Figure9-5.jpg`: Map of CORS stations on the CORS web page, showing a 250 km radius around a selected location
* :numref:`Figure9-6.jpg`: Example of a spreadsheet used to help select the best CORSs for a project
* :numref:`Figure9-7.jpg`: EData availability for the CORS "GODE" in early April 2021
* :numref:`Figure9-8.jpg`: Data availability for a CORS not in the NOAA CORS network will appear blank
* :numref:`Figure9-9.jpg`: Example coordinates page for the CORS LOY8 showing computed velocities

**10. Session Processing**

* :numref:`Figure10-1.jpg`: Accessing the Session Processing Page
* :numref:`Figure10-10.jpg`: The seven email attachments (sent to the project manager) resulting from session processing
* :numref:`Figure10-11.jpg`: Select "ALL SESSIONS" from the Manger's Page to reveal the results of any/all session processing
* :numref:`Figure10-12.jpg`: Clicking on the session of interest in the "Occupation" table showing "ALL SESSIONS" will open the session page
* :numref:`Figure10-13.jpg`: Mark information displayed on at particular session page
* :numref:`Figure10-14.PNG`: Session results presented on a mark page
* :numref:`Figure10-15.jpg`: Session Solution Statistics are available from the Manager's Page
* :numref:`Figure10-16.jpg`: Example of session solution statistics
* :numref:`Figure10-17.jpg`: The Show File button on the Manager's Page controls bar
* :numref:`Figure10-18.jpg`: Example of a session solution processing report (\*.txt file)
* :numref:`Figure10-19.jpg`: Example solution statistics for all sessions
* :numref:`Figure10-2.jpg`: Example Session processing page
* :numref:`Figure10-3.jpg`: Example session processing page noting the one hub constrained 3D under "User" selected network design
* :numref:`Figure10-4.jpg`: Manage a mark's data file pop-up window
* :numref:`Figure10-5.jpg`: Manage a mark's data file pop-up window
* :numref:`Figure10-6.jpg`: Manage a mark's data file pop-up window
* :numref:`Figure10-7.jpg`: The "Perform Processing" button at the top of the Session Processing Page
* :numref:`Figure10-8.jpg`: The OP Session Processing confirmation window
* :numref:`Figure10-9.jpg`: Manager's Page showing six successfully processed sessions

**11. Network Adjustments**

* :numref:`Figure11-1.jpg`: Conceptual work flow for running adjustments in OP1
* :numref:`Figure11-10.jpg`: Sample network solution processing report showing a "no check" mark
* :numref:`Figure11-11.PNG`: The explanation of a solution processing report showing "MARK ESTIMATED - A PRIORI COORDINATE SHIFTS"
* :numref:`Figure11-12.jpg`: Network solution processing report showing the coordinates of unconstrained marks
* :numref:`Figure11-13.jpg`: Network solution processing report showing coordinates of a constrained mark and the coordinate shifts between computed and published coordinates
* :numref:`Figure11-14.jpg`: Sample output from the PREPLT2 file
* :numref:`Figure11-15.jpg`: Preliminary Network Adjustment window showing OP recommendation for a single hub 3D constraint
* :numref:`Figure11-16.jpg`: (1) a rejected vector; (2) a session (0987A) with large residuals; and (3) the large residual in the "Up" direction
* :numref:`Figure11-17.jpg`: Example of a histogram plotting the unadjusted vector differences from the COMPVECS output
* :numref:`Figure11-18.jpg`: Sample Horizontal Constrained Adjustment window showing 3-D constraints
* :numref:`Figure11-19.jpg`: Network solution processing report from the Horizontal Constrained Adjustment showing "MARK ESTIMATED - HORIZONTAL-FREE ADJUSTMENT COORDINATE SHIFTS"
* :numref:`Figure11-2.jpg`: Set up Adjustment button on the Manager's Page controls bar
* :numref:`Figure11-20.jpg`: Network solution processing report from the Horizontal Constrained Adjustment showing "MARK ESTIMATED – PUBLISHED HORIZONTAL COORDINATE SHIFTS"
* :numref:`Figure11-21.jpg`: Computed - Observed residual values shown in the processing log output for the Horizontal Constrained Adjustment
* :numref:`Figure11-22.jpg`: Processing Report from the Horizontal Constrained Adjustment showing the results of the F-Test
* :numref:`Figure11-23.jpg`: Constraint Ratio Test as seen in the Processing Report of the Horizontal Constrained Adjustment
* :numref:`Figure11-24.jpg`: Network accuracies as shown in the Processing Log
* :numref:`Figure11-25.jpg`: Sample Vertical Free Adjustment constraint selection
* :numref:`Figure11-26.jpg`: Sample Vertical Constrained Adjustment constraint selection
* :numref:`Figure11-27.png`: the Horizontal Free Adjustment, the Horizontal Constrained Adjustment, and the published orthometric heights
* :numref:`Figure11-28.jpg`: Upload Project Report button on the Controls Bar on the Manager's Page
* :numref:`Figure11-29.jpg`: The Review and Submit to NGS button on the Controls Bar on the Manager's Page
* :numref:`Figure11-3.jpg`: Network adjustment windows with NGS Tracking ID and without
* :numref:`Figure11-30.jpg`: Example of the result of a project check where two items are missing or incomplete
* :numref:`Figure11-4.jpg`: The Manage Solutions window, enabling the user to rename or delete any solution in the project
* :numref:`Figure11-5.jpg`: Conceptual diagram of the relationships between session solutions and network solutions in OP
* :numref:`Figure11-6.jpg`: Sample Network Adjustment window showing the OP recommended selections for a Preliminary Adjustment
* :numref:`Figure11-7.jpg`: The "Perform Adjustment" button on the network adjustment page
* :numref:`Figure11-8.jpg`: Sample network adjustment confirmation pop-up window
* :numref:`Figure11-9.PNG`: Sample network solution selected from the individual user mark page