Future State Plane Coordinate Systems...20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion 40 PPM 0.2...

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STATE OF COLORADO Future State Plane Coordinate Systems JOEY STONE GNSS COORDINATOR DENVER WATER GEODETIC COORDINATION FOR THE STATE OF COLORADO

Transcript of Future State Plane Coordinate Systems...20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion 40 PPM 0.2...

Page 1: Future State Plane Coordinate Systems...20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion 40 PPM 0.2 ft/mi 1:25,000 Max δfor LDP 50 PPM 0.3 ft/mi 1:20,000 Max δfor NGS Designs 100 PPM

STATE OF

COLORADOFuture State Plane

Coordinate Systems

JOEY STONEGNSS COORDINATOR

DENVER WATERGEODETIC COORDINATION

FOR THE STATE OF COLORADO

Page 2: Future State Plane Coordinate Systems...20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion 40 PPM 0.2 ft/mi 1:25,000 Max δfor LDP 50 PPM 0.3 ft/mi 1:20,000 Max δfor NGS Designs 100 PPM

Future State Plane Coordinate Systems

•Modernization of the National Spatial Reference System• NATRF 2022 (North American Terrestrial Reference Frame of 2022)• Significant Horizontal and Vertical Shifts

•New State Plane Projections • Topographic Base Projection• Emphasis on Minimizing Linear Distortion

• 2 Layers• State Wide Projection• LDPs (Low Distortion Projections)

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National Spatial Reference System

Latitude, Longitude Elevation/Height

Ellipsoid

Geoid Model

Horizontal Vertical

Rotation

Origin

Velocity

Level Runs

Gravity

Bench

Marks

3D

Horizontal Datums Vertical Datums

2D

Geographic Coordinates

Projected Coordinates

NAD27 1927-1986NAD83 1986-199xHARN 199X-2007

NSRS2007 2007-20122011 2012-2022

NGVD 29NAVD 88

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Ellipsoid Origin

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Horizontal NATRF2022 compared to NAD83

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Horizontal NATRF2022 compared to NAD83

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Vertical NATRF2022 compared to NAD83

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Vertical NATRF2022 compared to NAD83

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Linear Distortion PPM

PPM δ Distortion in Feet/Mile

Dimensionless Ratio

Comments

20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion

40 PPM 0.2 ft/mi 1:25,000 Max δ for LDP

50 PPM 0.3 ft/mi 1:20,000 Max δ for NGS Designs

100 PPM 0.5 ft/mi 1:10,000 NAD83 Criterion (@Ellipsoid)

200 PPM 1.1 ft/mi 1:5,000 Common δ under NAD83 @ ground

400 PPM 2.1 ft/mi 1:2,500 Common δ under NAD83 @ ground

1:50,000 and up Commonly Achieved Traverse Closures… (Plus Network Error)

Federal Geographic Data CommitteeGeospatial Positional Accuracy Standards

AEC Surveying and Mapping StandardsClosure Errors

Second-Order, Class I……………..1:50,000Second-Order, Class II..…………..1:20,000Third-Order, Class I….……………...1:10,000Third-Order, Class II…………………..1:5,000

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Current Statewide Coordinate System

North Zone

Central Zone

South Zone

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Current Statewide Coordinate System

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Current Statewide Coordinate System

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New Statewide Coordinate System

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New Statewide Coordinate System

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New Statewide Coordinate System

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New LDP Coordinate System

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New LDP Coordinate System

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New LDP Coordinate System

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LinkedIn@ John Hunter, PLS

Colorado NGS Geodetic Coordinator

PLSChttps://www.plsc.net/geodetic_resources.php

Twitter@SPCS22Colorado

NGS Website THANK YOU

[email protected]