NSRS Modernization Update Dru Smith NSRS Modernization Manager NOAA’s National Geodetic Survey

1. NSRS Modernization Update Dru Smith NSRS Modernization Manager NOAA’s National Geodetic Survey FGCS Meeting, Silver Spring, MD

2. NGS Ten Year Plan 2013-2023 Goal 2: Modernize and Improve the National Spatial Reference System. • Objective 1: Replace NAD 83 • Objective 2: Replace NAVD 88 • Objective 3: Re-invent Bluebooking • Objective 4: Fix the Toolkit • Objective 5: Better Surveying FGCS Meeting, Silver Spring, MD

3. Projects being tracked under “Goal 2” FGCS Meeting, Silver Spring, MD

4. Projects that transcend more than one Goal FGCS Meeting, Silver Spring, MD

5. Naming the replacements • NGS/CGS negotiations occurred in June • Scrapped previous naming proposal (see Feb 2016 FGCS meeting) • New working agreement reached on 6/8/2016 • Approved by NGS ESC • Approved by the CGS leadership (with minor reservations) • Awaiting final word from INEGI FGCS Meeting, Silver Spring, MD

6. Template Legislation • NGS historically provided template acts for each state to help adopt changes • NAD 83 , SPC • Has one major drawback: “NAD 83” is now by-name mandated in 48 states. • NEWS: As of 6/10/2016: • NGS/NSPS/AAGS committee has completed a new template: • E.g. “the latest coordinates of the NSRS as defined by the NGS” • Avoids name-specific issues in the future • Has been turned over to NSPS for dissemination to the states • NSPS decision on an action plan in October FGCS Meeting, Silver Spring, MD

7. Goal 1: Replace NAD 83 FGCS Meeting, Silver Spring, MD

8. Math Model: IGSxx to 2022 • Define this: ? FGCS Meeting, Silver Spring, MD

9. Math Model: IGSxx to 2022 • NEWS as of 6/8/2016: CGS and NGS have a potential candidate solution • Tentative (close-hold) • Dan Roman will finalize this proposal as project manager • Definitely will contain plate rotation • Four plates = Four frames (adding the Caribbean) • The role of, and responsibility for, other velocities (compression, earthquakes, etc) is being discussed FGCS Meeting, Silver Spring, MD

10. NADCON 5 • Cleaning up NADCON and GEOCON • Streamlining software so 2022 can be added fast • No more state-by-state transformations • All reference frames and most horizontal datums back to the 1890’s FGCS Meeting, Silver Spring, MD

11. NADCON 5(ex: NAD27/NAD83(86) longitude/meters) FGCS Meeting, Silver Spring, MD

12. NADCON 5(ex: NAD27/NAD83(86) longitude error /meters) FGCS Meeting, Silver Spring, MD

13. Goal 2: Replace NAVD 88 FGCS Meeting, Silver Spring, MD

14. “CONUS” Alaska Guam / Northern Marianas Hawaii Puerto Rico / Virgin Islands American Samoa Expected GRAV-D airborne gravity coverage by 2022 GRAV-D Planned Coverage FGCS Meeting, Silver Spring, MD

15. GRAV-D • 51.7% as of today • Coming up: Experiments with G4 • If successful, begin using G4 to collect Pacific states and territories as early as next year FGCS Meeting, Silver Spring, MD

16. Common Gravity Files • NGS, CGS and INEGI have data from NGA • Under NDAs: Can’t share => No analysis • NEWS as of 6/9/2016: NGA has offered a new, evaluated publicly releasable set of 7 million points • NGS, CGS, INEGI will work from this set • If a substantial number of points currently held by NGS are not in the new set, only then will we pursue the NDA issue FGCS Meeting, Silver Spring, MD

17. Geoid Monitoring Service • NGS should monitor the following (pre-decisional): • Secularshapechanges (via GRACE and terrestrial observations) • Permanent episodic shape changes (using GRACE and/or new airborne surveys), such as earthquakes • Secularsizechanges of GMSL (via Altimetry and terrestrial observations) • Provide all three of these to the user community independently • Ignore the following: • Periodic changes • No “summer geoid” versus “winter geoid” • Temporary episodic shape changes • No special geoid just for the “7 year Southeast CONUS drought” FGCS Meeting, Silver Spring, MD

18. GPS Campaign for Transformations • Needed to create next NADCON and VERTCON grids • Transform f, l, h from NAD 83(2011) into 2022 • Transform H from NAVD 88* into 2022 • Spacing will be driven by NADCON 5 and VERTCON 3 research in 2016 * Or any other official, latest, vertical datum in the NSRS FGCS Meeting, Silver Spring, MD

19. Choice of points Highly unstable / lots of motion 3-D stability (except for plate rotation) Highly stable / no motion 2017 ‘18 ‘19 ‘21 ‘20 Year when the point should be surveyed FGCS Meeting, Silver Spring, MD

20. VERTCON 3 • Should begin late 2016 • Like NADCON 5, two intents: • Make it more user friendly than existing product • Prepare software to add 2022 quickly FGCS Meeting, Silver Spring, MD

21. Goal 3: Re-invent Bluebooking FGCS Meeting, Silver Spring, MD

22. Build an NSRS Database • A new NSRS database will be: • A spatial database • Capable of working with 4 dimensional data • Able to hold raw GPS data for fast reprocessing • Target: 2020 • Currently: • Skeletal structure in place to load, hold, retrieve gravity data. FGCS Meeting, Silver Spring, MD

23. OPUS-Projects into the IDB • IDB (Integrated Database) is the official repository of NSRS data • Currently may only be populated through the FGCS Bluebook process • Ongoing project to use OPUS-Projects to do all checking and processing for submission into NGS • Expected Beta release: Dec 2016 FGCS Meeting, Silver Spring, MD

24. OPUS-Projects of the future? The 2013 Survey of the Washington Monument had GPS, leveling and traverse components. An integrated OP might allow for easier processing and especially cross-processing FGCS Meeting, Silver Spring, MD

25. OPUS-Projects of the future? Day 4 – 2014 04 21 Leveled point Not Leveled GPS/geoid control point Backward Running Forward Running FGCS Meeting, Silver Spring, MD

26. Organize Historic GPS files • To prepare to populate the new NSRS with existing GPS data: • NGS has some 3000 GPS projects on file • 400,000 receiver files out of 1.2 million files • Any name, any directory…no organization • Metadata (receiver, antenna height, PID, times) • Once organized, these files will go through OP and build the NSRS database foundation FGCS Meeting, Silver Spring, MD

27. Goal 4: Fix the Toolkit FGCS Meeting, Silver Spring, MD

28. Fix the Tool Kit FGCS Meeting, Silver Spring, MD

29. Fix the Toolkit • Try it yourself at: • http://beta.ngs.noaa.gov/gtkweb/ • Next to be added: • NADCON 5 • VERTCON 3 FGCS Meeting, Silver Spring, MD

30. Goal 5: Better Surveying FGCS Meeting, Silver Spring, MD

31. Replace NGS 58/59 • Oregon State University delivered a final report outlining their work on this project in Dec 2015 • Not a manual, just a report. • This is one, in a series of data collections, attempting to support the creation of a new GPS height manual. • NGS still needs to write the manual itself. • Ideas for getting to the finish line would be welcome. • Should this be an FGCS working group project? FGCS Meeting, Silver Spring, MD

32. Leveling in a GPS/geoid world • Develop a manual for using GPS and leveling in the field and in processing for orthometric heights in the new datum • Order of events: • Simulations (underway; New math model developed last week) • NGS/Ohio State joint collaboration on the mathematical model • Corbin field work (underway; Leveling done, GPS was this week) • Apply to GSVS11/14/17 • Manual Written and approved at FGCS FGCS Meeting, Silver Spring, MD

33. Loose Ends FGCS Meeting, Silver Spring, MD

34. State Plane Coordinates • Barring user-requested changes, NGS may use existing SPC projections, boundaries and equations, but with new false northings & eastings (to distinguish from NAD 27 and NAD 83) • User-provided plug-ins (pre-written code) for SPC or other projections may be possible FGCS Meeting, Silver Spring, MD

35. Thank you! FGCS Meeting, Silver Spring, MD

36. Questions? Ideas? What are we overlooking? FGCS Meeting, Silver Spring, MD

37. END FGCS Meeting, Silver Spring, MD