NGS All Hands 2.5.2010

NGS All Hands 2.5.2010

Blueprint for 2022, Part 3: Working in the Modernized National Spatial Reference System (NSRS) Dru Smith NSRS Modernization Manager NOAAs National Geodetic Survey July 25, 2019 Blueprint for 2022, Part 3: Webinar 1 Outline Acknowledgements BLUF

What Ill be skipping Refresher / Shift and Drift Replace NAD 83 Replace NAVD 88 EPP2022 and IFVM2022 Reference Epoch Coordinates from Time-Dependent Coordinates Terminology Using the modernized GNSS Miscellaneous July 25, 2019 Blueprint for 2022, Part 3: Webinar 2

Acknowledgments Blueprint for 2022, Part 3 is the result of significant TEAM efforts over 18 months GNSS Standard Operating Procedure (SOP) Team Choi, Roman, Jalbrzikowski, Sun, Dennis, Prusky, Gillins, W. Wang, Saleh, Yoon, Damiani, Kanazir, Evjen, Sellars, Schenewerk, Caccamise, Heck, Hilla, Bilich, McFarland Leveling Standard Operating Procedure (SOP) Team Zenk, Kanazir, Dennis, Breidenbach, Fancher, Hanson, Hensel, Paudel, Ward, Zilkoski, Gillins, Geoghegan BP3 Writing Team Kinsman, Kanazir, Hensel, Jordan, Stone, Vogel, Heck, Dennis, Fromhertz, Winester, Zenk, Silagi, Roman, Grosh, Ahlgren It is a team document, with input from dozens of individuals around

NGS July 25, 2019 Blueprint for 2022, Part 3: Webinar 3 Bottom Line, Up Front If you do geospatial work in the USA and you work in the National Spatial Reference System.. every product youve ever made every survey every map

every lidar point cloud every image every DEM WILL have the wrong coordinates on it in 3 years. Lets talk about what this means, why it is happening, and how it will affect things going forward July 25, 2019 Blueprint for 2022, Part 3: Webinar 4 What is BP3? BP3 is a companion to BP1 (geometric) and BP2 (geopotential), both released in 2017 It is about re-inventing bluebooking Its about how NGS will provide the frames/datum in the future Its about how YOU will use the frames/datum in BP1 and BP2 July 25, 2019

Blueprint for 2022, Part 3: Webinar 5 What Ill be skipping Blueprint for 2022, Part 3 will take 1-1.5 hours to cover Not included today: What is NGS and its mission The NSRS Bluebooking GRAV-D ITRF Why we are modernizing in 2022

All of these topics have been covered extensively in multiple forums in the last few years July 25, 2019 Blueprint for 2022, Part 3: Webinar 6 Refresher July 25, 2019 Blueprint for 2022, Part 3: Webinar 7 Modernizing the NSRS means

July 25, 2019 Blueprint for 2022, Part 1 Replacing NAD 83 Blueprint for 2022, Part 2 Replacing NAVD 88 Re-inventing Bluebooking Blueprint for 2022, Part 3 Improving the Geodetic Toolkit Better Surveying Methodologies Blueprint for 2022, Part 3: Webinar 8 Modernizing the NSRS The blueprint documents: Your best source for information

Geometric: Sep 2017 NOAA TR NOS NGS 62 Geopotential: Nov 2017 NOAA TR NOS NGS 64 Working in the modernized NSRS: April 2019 NOAA TR NOS NGS 67 32 pages 41 pages 77 pages July 25, 2019 Blueprint for 2022, Part 3: Webinar

9 Replacing NAD 83 The Old: NAD 83(2011) NAD 83(PA11) NAD 83(MA11) The New: The North American Terrestrial Reference Frame of 2022 (NATRF2022) The Caribbean Terrestrial Reference Frame of 2022 (CATRF2022) The Pacific Terrestrial Reference Frame of 2022 (PATRF2022) The Mariana Terrestrial Reference Frame of 2022 (MATRF2022)

July 25, 2019 Blueprint for 2022, Part 3: Webinar 10 Replacing NAVD 88 Orthometric Heights Normal Orthometric Heights Dynamic Heights Gravity Geoid Undulations Deflections of the Vertical

July 25, 2019 The Old: The New: NAVD 88 The North American-Pacific Geopotential Datum of 2022 PRVD 02 (NAPGD2022) VIVD09 ASVD02 Will include: NMVD03 GEOID2022 GUVD04 DEFLEC2022 IGLD 85 GRAV2022 IGSN71 DEM2022

GEOID12B More DEFLEC12B Blueprint for 2022, Part 3: Webinar 11 The preeminence of ITRF Rotation of the North American Plate Rotation of the Caribbean Plate ITRF2014 Rotation of the Pacific Plate Rotation of the Mariana Plate The North American Terrestrial Reference Frame

of 2022 (NATRF2022) The Caribbean Terrestrial Reference Frame of 2022 (CATRF2022) The Pacific Terrestrial Reference Frame of 2022 (PATRF2022) The Mariana Terrestrial Reference Frame of 2022 (MATRF2022) EPP2022 July 25, 2019 EPP for Euler Pole Parameters (a way of describing a plates rotation) Blueprint for 2022, Part 3: Webinar 12 Shift and Drift

July 25, 2019 Blueprint for 2022, Part 3: Webinar 13 Shift One of the two major changes youll see in 2022 is a shift in coordinates Latitude, Longitude, Ellipsoid Height: -2 to +4 meters Non-geocentricity of NAD 83 Orthometric Height: -0.5 to +2.0 meters Bias and tilt in NAVD 88 Other shifts will occur in non-CONUS, non-Alaska regions of the USA There will be outliers! Old unsurveyed points might be off by meters if theyve moved! July 25, 2019 Blueprint for 2022, Part 3: Webinar

14 NAD 83(2011) epoch 2010.0 to NATRF2022 epoch 2020.00 (estimate) July 25, 2019 Blueprint for 2022, Part 3: Webinar 15 NAVD 88 to NAPGD2022 epoch 2020.00 (estimate) July 25, 2019 Blueprint for 2022, Part 3: Webinar 16 Drift

The second major change youll see in 2022 is a drift in coordinates Everything in the world moves Coordinates will be associated with the actual date when the data was taken! July 25, 2019 Blueprint for 2022, Part 3: Webinar 17 The wrong question, circa 2022: What is the latitude of that point? The right question, circa 2022: What is the latitude of that point, on some specific date? July 25, 2019 Blueprint for 2022, Part 3: Webinar

18 Drift The second major change youll see in 2022 is a drift in coordinates Everything in the world moves Coordinates will be associated with the actual date when the data was taken! Velocities at all marks can be estimated Using a new tool, called the Intra-Frame Velocity Model (IFVM2022) Two things will mitigate the pain of time-dependent coordinates: Plate Fixed frames Reference Epoch coordinates July 25, 2019 Blueprint for 2022, Part 3: Webinar 19

Euler Poles and Plate Fixed In the ITRF, many tectonic plates have one dominant motion: rotation Plus plenty of other motions The point about which a continent rotates is called its Euler Pole In summary: Under ITRF Frame = constant N.A. Plate = rotating It is a fairly simple matter to reverse this and define a rotating frame in which the plate is not rotating. Under NATRF2022: Frame = rotating (relative to ITRF) N.A. Plate = constant (relative to NATRF2022 frame) We say NATRF2022 is fixed to the N.A. Plate, making it a plate fixed frame July 25, 2019

Blueprint for 2022, Part 3: Webinar 20 CORS Velocities ITRF2014 July 25, 2019 Blueprint for 2022, Part 3: Webinar 21 CORS Velocities NATRF2022 July 25, 2019 Blueprint for 2022, Part 3: Webinar 22

EPP2022 and IFVM2022: The two tools that make time dependent geodetic control useable July 25, 2019 Blueprint for 2022, Part 3: Webinar 23 Theres really two drifts The plate rotation is simple (3 parameters per plate) Captured in EPP2022 Horizontal (latitude/longitude) only Changes the frame ITRF2014 to NATRF2022, PATRF2022, CATRF2022 & MATRF2022 Doesnt change the epoch The residual motions (after removing plate rotation) are complex

Captured in IFVM2022 Residual horizontal motion All vertical motion Changes the epoch Doesnt change the frame IFVM = Intra-frame velocity model July 25, 2019 Blueprint for 2022, Part 3: Webinar 24 Example Its 2039 and you are working in San Diego using NATRF2022 You need to compare your work against a competitors survey

Important: This slide only covers geometric coordinates. Done in 2028, using PATRF2022 PATRF2022 ep. 2028.048 EPP2022 ITRF2014 ep. 2028.048 EPP2022 IFVM2022 PATRF2022

ep. 2039.704 July 25, 2019 NATRF2022 ep. 2028.048 IFVM2022 EPP2022 ITRF2014 ep. 2039.704 Blueprint for 2022, Part 3: Webinar EPP2022 NATRF2022 ep. 2039.704 25 Reference Epochs It seems highly unlikely that surveyors will embrace coordinates with

such diversity of epochs To mitigate that, NGS will issue snapshots of the NSRS every five years (called Reference Epochs) Estimates of coordinates at specific 5 year intervals, based on historic timedependent coordinates and the IFVM2022 and the Geoid Monitoring Service (GeMS), for non-geometric quantities Beginning with 2020.00 Each snapshot will be published 2-3 years after the reference epoch Thus the 2020.00 Reference Epoch Coordinates get published by the end of calendar year 2022 July 25, 2019 Blueprint for 2022, Part 3: Webinar 26 Reference Epoch Coordinates from Time-Dependent Coordinates July 25, 2019

Blueprint for 2022, Part 3: Webinar 27 2.250 Assume h was determined four different times: 1990: 2.100 1994: 2.110 2002: 2.190 2009: 2.180 2.200 h 2.150 2.100 2.050 2.000

1990 95 00 05 10 15 time 20 25 30 2.250 All measurements have error. Shown here are the same

Values of h, but with their error estimates. 1990: 2.100 +/- 0.0375 (3.75 cm) 1994: 2.110 +/- 0.0250 (2.50 cm) 2002: 2.190 +/- 0.0200 (2.00 cm) 2009: 2.180 +/- 0.0250 (2.50 cm) 2.200 h 2.150 In the modernized NSRS these time-dependent coordinates, estimated at the actual date when the surveys took place, will be called Final Discrete Coordinates 2.100 2.050 2.000 1990 95

00 05 10 15 time 20 25 30 2.250 In todays NSRS, a height is held fixed until replaced. So plotting the height as seen on a datasheet over time would look like this:

2.200 h 2.150 2.100 2.050 2.000 1990 95 00 05 10 15 time

20 25 30 In the modernized NSRS we will also have an estimate of crustal motion from IFVM2022 2.250 2.200 h 2.150 2.100 Combining Final Discrete Coordinates with IFVM2022 allows NGS to estimate Reference Epoch Coordinates

2.050 2.000 1990 95 00 05 10 15 time 20 25 30 2.250

2.200 h The IFVM2022 model will (statistically) match reference epoch coordinates. 2.150 2.100 This will allow for the elimination of a stand-alone NADCON product for coordinates after 2020.0, instead relying entirely upon IFVM2022 2.050 2.000 1990 95 00

05 10 15 time 20 25 30 2.250 2.200 h 2.150 2.100

In the absence of new survey data, error estimates will grow through time. 2.050 2.000 1990 95 00 05 10 15 time 20 25

30 The (in)ability of current approach to properly inform users of the height of this mark can be seen in green below. 2.250 2.200 h 2.150 2.100 2.050 2.000 1990 95 00 05

10 15 time 20 25 30 Example (v2) Its 2039 and you are working in San Diego using NATRF2022 (epoch 2035.00) You need to compare your work against a competitors survey Done in 2028, using PATRF2022 (epoch 2025.00) PATRF2022 ep. 2025.00 IFVM2022

PATRF2022 ep. 2035.00 July 25, 2019 EPP2022 ITRF2014 ep. 2025.00 EPP2022 NATRF2022 ep. 2025.00 This wouldve been a NADCON function in the past IFVM2022 ITRF2014 ep. 2035.00

NATRF2022 ep. 2035.00 EPP2022 Blueprint for 2022, Part 3: Webinar EPP2022 35 Terminology July 25, 2019 Blueprint for 2022, Part 3: Webinar 36 The NOAA CORS Network (NCN) As of 2019, this is the official name of the network managed at

NGS Historically referred to as CORS or the CORS July 25, 2019 Blueprint for 2022, Part 3: Webinar 37 ARP vs GRP The purpose of a CORS can be debated But at NGS: the continuous collection of GNSS data for the express purpose of determining the continuous coordinates of a unique, permanent, physical point on each CORS Such a point is called the Geometric Reference Point, or GRP Not to be confused with the Antenna Reference Point, or ARP Which is part of each antenna, not a permanent, unique physical part of a CORS Identification of GRPs has begun Coordinates on a CORS will eventually be fully transitioned to be coordinates of the GRP of the CORS. Right now they areunclear.

July 25, 2019 Blueprint for 2022, Part 3: Webinar 38 GPS Month A span of four consecutive GPS weeks, where the first GPS week in the GPS month is an integer multiple of 4 GPS Month 0 = GPS weeks 0, 1, 2 and 3 GPS Month 1 = GPS weeks 4, 5, 6 and 7 Etc. July 25, 2019 Blueprint for 2022, Part 3: Webinar 39 New Types of Coordinates

July 25, 2019 Blueprint for 2022, Part 3: Webinar 40 Five types of coordinates Name Reported Preliminary Final Discrete Final Running Reference Epoch July 25, 2019 Generally on Passive Passive Passive CORS

Passive and CORS Description Quick and Dirty. Smartphone accuracy. Computed by you with OPUS using your data. Unchecked by NGS. Most accurate. Time-dependent. Computed by NGS every four weeks. Continuous time-dependent CORS coordinates. Checked by NGS every day. Modeled from Final Discrete, Final Running, IFVM2022 and GeMS. Computed by NGS every five years. Blueprint for 2022, Part 3: Webinar 41 New Types of Coordinates Reported These are from any source where the coordinate is directly reported to NGS without the data necessary for NGS to replicate the coordinate. Scaled From NCAT or Vdatum

NGS Coordinate Conversion and Transformation Tool (NCAT) Hand Held / Smartphone Reported directly from an RTK rover without data files July 25, 2019 Blueprint for 2022, Part 3: Webinar 42 Reported Coordinates July 25, 2019 Blueprint for 2022, Part 3: Webinar 43 New Types of Coordinates Preliminary

These are coordinates at survey epoch that have been computed from OPUS, but not yet quality checked and loaded into the National Spatial Reference System Database (NSRS DB). User-computed values, such as they might get today from either OPUS-S or OPUS-Projects Preliminary coordinates are the only coordinates a user will get directly from OPUS July 25, 2019 Blueprint for 2022, Part 3: Webinar 44 New Types of Coordinates Reference Epoch These are coordinates which have been estimated by NGS, from time-dependent (final discrete and final running) coordinates, at an Official NSRS Reference Epoch (ONRE) NAD 83(2011) epoch 2010.00 (sort of) wouldve fallen under this category These will be computed by NGS every 5 years

On a schedule 2-3 years past ONRE 2020.00 coordinates will be computed in CY 2022 2025.00 coordinates will be computed in CY 2027 July 25, 2019 Blueprint for 2022, Part 3: Webinar 45 New Types of Coordinates Final Discrete These are coordinates computed by NGS using submitted data and metadata, checked and adjusted and referenced to a single survey epoch. These represent the best estimates NGS has of the time-dependent coordinates at any mark Survey epochs: GNSS: Each GPS Month Stand-alone occupations, RTK/RTN, Campaigns, etc Leveling: Annually

Orthometric heights: Leveling adjusted to GNSS-based orthometric heights July 25, 2019 Blueprint for 2022, Part 3: Webinar 46 New Types of Coordinates Final Running Of all types of coordinates on a mark, these are the only ones which will have a coordinate at any time. Generally will only be available at each CORS Also being called the coordinate function Which will be generated by a fit to daily processed data July 25, 2019 Blueprint for 2022, Part 3: Webinar 47

Using the modernized NSRS OPUS Will include stand-alone GNSS (like OPUS-S and OPUS-RS) Will include mark discovery, recovery and reporting Will include project management and analysis for: GNSS (including RTK and RTN!) Leveling Classical Gravity All in one project! Will have a submit to NGS button which replaces bluebooking July 25, 2019 Blueprint for 2022, Part 3: Webinar

48 Using the modernized NSRS OPUS Guidance (such as pre-selected CORSs and assistance in locating marks in project areas) Users will decide what control to hold fixed and what epochs they wish to set for the adjustment Preliminary coordinates If submitted to NGS, we will harvest your raw data and use it to compute Final Discrete coordinates July 25, 2019 Blueprint for 2022, Part 3: Webinar 49 Using the modernized NSRS

GNSS is your only entry (for now) Leveling and Classical surveys will need some GNSS if you wish to submit your survey to NGS for inclusion in the NSRS database Some GNSS = RTK or RTN is fine No decision yet on whether OPUS will operate if projects have no GNSS If it does, this tends to encourage reliance upon passive control which is so 90s (1890s!) July 25, 2019 Blueprint for 2022, Part 3: Webinar 50 So much more New version of PAGES GPS, Galileo, GLONASS, Beidou, QZSS, etc. Target: 15 minute occupations OPUS expansion plan

RTK/RTN: 2019 Leveling, Classical, Gravity: 2020-2025 Fully integrated (GPS projects with leveling and gravity? No problem!) Ease of submission to NGS for inclusion in the NSRS New Mark Recovery Tool Smart-phone enabled. In beta now! beta.ngs.noaa.gov/cgi-bin/recvy_entry_www.prl Fully integrated toolkit NCAT and VDatum June 13, 2019 HxGN LIVE 2019 51

Thank you! July 25, 2019 Blueprint for 2022, Part 3: Webinar 52 Questions? July 25, 2019 Blueprint for 2022, Part 3: Webinar 53

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