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Wsrs2022 wsls-aug-2019

Wisconsin Spatial Reference System 2022 Task Force presentation to Wisconsin Society of Land Surveyors, August 2019.

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Wsrs2022 wsls-aug-2019

  2. 2. In case you hadn’t heard, NEW “DATUMS” ARE COMING!
  3. 3. New horizontal reference frame and new vertical datum
  4. 4. >1.25 m shift horizontal (Ellipsoid center shift)
  5. 5. -1 m shift vertical
  6. 6. Other Characteristics Coordinates will be time-dependent (epochs) due to movement of crustal plates Euler-pole model of plate rotation (~3 cm/yr counter- clockwise for Wisconsin) Intra-Frame Velocity Model (IFVM) to estimate non- rotational movement as well as vertical change
  7. 7. Getting Ready! In 2018 WSLS Board voted to create Task Force to explore implications of new reference frame Organized under WSLS’s Geospatial Committee Members represent cross-section of Wisconsin geospatial community including private sector, software, hardware and utility companies Goal is to ensure Wisconsin is prepared for the new reference frame Howard Veregin, State Cartographer, is Chair of Task Force, and Richard Kleinmann, chair of WSLS Geospatial Committee, is co-Chair
  8. 8. Formation of Task Force Initial “Discovery Team” meeting in Madison in August 2018, to: 1) Identify main impacts of the new reference frame 2) Identify stakeholder groups most affected 3) Create the structure and select members for Task Force 4) Respond to a Federal Register Notice (FRN) from NGS about the number and kinds of layers in Wisconsin’s SPCS
  9. 9. Task Force Structure & Organization Chose “Wisconsin Spatial Reference System 2022 Task Force” (WSRS2022) as name of the group
  10. 10. Task Force Structure & Organization Created Focus Groups with specific goals: Technical Focus Group: Develop a proposal responding to NGS policies and procedures for the state’s SPCS. [More details in a few minutes] Leads: Glen Schaefer (retired); Al Vonderohe (retired) Legislative Focus Group: Make recommendations to accommodate new reference frame in legislation. Leads: Emily Pierce (WSLS, NSPS); Eric Damkot (WLIA) Education and Outreach Focus Group: Help educate community about new reference frame and implications for geospatial data and workflows. Leads: Brenda Hemstead (SCO); Corey Hughes (WCSA) Software/Hardware Focus Group: Develop plans to incorporate the new reference frame into hardware and software.Lead: Jim Lacy (SCO) Implementation and Adoption Focus Group: Identify implementation and adoption issues, including best practices for transforming current data, and funding of local/state data conversion. Leads: John Laedlein (WI DNR); Jeremiah Erickson (LION); Nina Rihn (WI DNR)
  11. 11. Task Force Structure & Organization Task Force structure in place: Chair & Co-Chair WSLS Representative WLIA Representative Chairs/Leads for 5 Focus Groups Quarterly Meetings of the Task Force Reps of each Focus Group to attend and report to the main Task Force Focus Groups have plans/goals with milestone dates set
  12. 12. WSRS2022 web page
  13. 13. Federal Register Notice FRN Details “Policy and Procedures Documents for the State Plane Coordinate System of 2022”, 04/18/2018, 83 FR 17149 NGS will update State Plane Coordinate System as part of transition to 2022 reference frame Recognize three SPCS layers: 1) Statewide single-zone layer 2) Small number of zones (2-3) similar to current SPCS 3) Multi-zone system with Low Distortion Projections (LDPs)
  14. 14. Federal Register Notice: Layers A state can have at most two layers: a. Single statewide zone b. One multi-zone layer (either traditional SPCS or LDP, but not both)
  15. 15. Federal Register Notice: LDPs LDP zones (distortion < 50 ppm) will not be designed by NGS a. Must be designed by the states themselves b. Must conform to all NGS requirements for size, distortion levels, coordinate rounding, etc.* * WISCRS violates many of these requirements
  16. 16. Discovery Team NGS Response to FRN Wisconsin best served by three-tiered coordinate system structure: 1) WISCRS (multi-zone LDP); 2) A three-zone State Plane Coordinate System modeled on the current SPCS zones for the state; 3) A single zone for the entire state based on WTM. Requested that NGS recognize WISCRS as a component of a three-tiered system, provide WISCRS coordinates on NGS data sheets and within NGS databases, and incorporate WISCRS within NGS coordinate transformation software.
  17. 17. Rationale for Discovery Team Response Prevalence of WISCRS within the state’s land information & surveying communities, large investments made in WISCRS spatial networks, extensive use of WISCRS in infrastructure design and construction, and incorporation of WISCRS into major commercial software tools … these examples show the significant financial interest in maintaining WISCRS and the buy-in it has received from the private sector.
  18. 18. FAST FORWARD To 2019
  19. 19. Current WSRS2022 Activities and Status All 5 focus groups formed and have begun activities Meetings at WSLS Institute (Jan 2019) & WLIA Annual Conference (Feb 2019) First two Quarterly Meetings (June 2019, Aug 2019) both in Madison Future Quarterly Meetings: Fall 2019, Jan 2020 (WSLS)… Currently drafting response to NGS’s updated policies and procedures (updated following FRN feedback)
  20. 20. NGS Revised Policies and Procedures Max of two multi-zone layers for each state. No state allowed to have both a traditional SPCS and an LDP system unless one of the two covers less than the entire state. NGS will not design LDP systems (states must do this). The design will need to conform to NGS specs: 1. Min zone width of 50 km (31 miles) 2. Each zone must have unique projection parameters 3. Minimize distortion at topographic surface rather than ellipsoid 4. Projections based on positive east longitudes
  21. 21. What the Future Looks Like!
  22. 22. Implications for Wisconsin Effects on Wisconsin (based on our FRN response): 1. Wisconsin’s statewide zone will not match Wisconsin Transverse Mercator (WTM), probably for multiple reasons, but at least because it will be designed to minimize distortion at Wisconsin’s topographic surface. 2. Wisconsin will not be able to have both a default traditional SPCS zones and WISCRS because only one multi-zone layer can cover the entire state. 3. WISCRS will not meet stated requirements for zone size limits for LDPs and zone uniqueness (i.e., there are more zones than projections since some counties share projections).
  23. 23. Current draft response to NGS 1. Request that NGS design a statewide single-zone layer which is a Transverse Mercator projection with central meridian at 270°east and false easting significantly different from WTM 27 and WTM 83. 2. Request that NGS design a default multi-zone layer for Wisconsin (traditional SPCS) with false easting significantly different from SPCS 27 and SPCS 83. 3. Seek a blanket exception to all NGS specifications that conflict with WISCRS (modified for NATRF 2022). 4. Seek exception to policy that only one multi-zone layer can provide complete coverage of an entire state. Consistent with our original FRN statement.
  24. 24. The Demise of the US Survey Foot NGS, National Institute of Standards and Technology (NIST) and Department of Commerce have unanimously decided to phase out the US Survey Foot! A FRN will formally announce the change. Note: US Survey Foot is referenced in legislation in at least 40 jurisdictions, including Wisconsin. Unclear at this time how states will be expected to respond to the change at the federal level.
  25. 25. THANK YOU!Contact Information Richard Kleinmann 262-522-4920 Howard Veregin 608-262-6852