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OCM Partners Metadata Library > Lidar - partner (no harvest) >

2011 NGA 133 Cities Lidar: Chicago

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:71320  |  Updated: December 8, 2023  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Issues
Data Quality
Lineage
Catalog Details

Summary

Data extent browse graphic

Short Citation
OCM Partners, 2024: 2011 NGA 133 Cities Lidar: Chicago, https://www.fisheries.noaa.gov/inport/item/71320.
Full Citation Examples

Abstract

Airborne lidar data covering Chicago, IL collected in November 2011 as part of the NGA 133 cities project. The project area was approximately 2344 square kilometers. The LiDAR was collected and processed to meet the Nominal Post Spacing (NPS)requirement of 1.0 meters.

The data was collected using a Leica ALS50-II 150 kHz Multiple Pulses in Air (MPiA) LiDAR sensor installed in a Leica gyro-stabilized PAV30 mount. The ALS50-II 150 kHz sensor collects up to four returns per pulse, as well as intensity data, for the first three returns. If a fourth return was captured, the system does not record an associated intensity value.

Distribution Information

  • Not Applicable

    Custom download for dataset allowing subsets, projection/datum changes, and derived product generation.

  • LAS/LAZ - LASer

    LAZ files in geographic coordinates and NAVD88 geoid18 heights in meters.

Access Constraints:

None

Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Controlled Theme Keywords

elevation, Elevation Theme, TERRAIN ELEVATION

Child Items

No Child Items for this record.

Contact Information

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-88.0545° W, -87.39841° E, 42.082409° N, 41.62568° S

Chicago, IL

Time Frame 1
2011-11-01 - 2011-11-15

Dates of data collection.

Item Identification

Title: 2011 NGA 133 Cities Lidar: Chicago
Short Name: 2011 Chicago m9967
Status: Completed
Creation Date: 2011-11
Publication Date: 2023-11-07
Abstract:

Airborne lidar data covering Chicago, IL collected in November 2011 as part of the NGA 133 cities project. The project area was approximately 2344 square kilometers. The LiDAR was collected and processed to meet the Nominal Post Spacing (NPS)requirement of 1.0 meters.

The data was collected using a Leica ALS50-II 150 kHz Multiple Pulses in Air (MPiA) LiDAR sensor installed in a Leica gyro-stabilized PAV30 mount. The ALS50-II 150 kHz sensor collects up to four returns per pulse, as well as intensity data, for the first three returns. If a fourth return was captured, the system does not record an associated intensity value.
Purpose:

Part of a project to provide 3D elevation coverage of major cities in the United States.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
ISO 19115 Topic Category
elevation
NGDA Portfolio Themes
Elevation Theme

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ILLINOIS

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR ALTIMETERS > Light Detection and Ranging Altimeters

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC
Country: United States

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: As Needed
Data Presentation Form: Model (digital)
Entity Attribute Overview:

X,Y,Z point locations

laser return intensity

pulse return number

number of returns
Entity Attribute Detail URL: https://www.asprs.org/wp-content/uploads/2019/07/LAS_1_4_r15.pdf
Distribution Liability:

None
Data Set Credit: NGA, SAIC, Woolpert

Support Roles

Data Steward

CC ID: 1279672
Date Effective From: 2023-11-07
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 1279674
Date Effective From: 2023-11-07
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 1279673
Date Effective From: 2023-11-07
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1279676
W° Bound: -88.0545
E° Bound: -87.39841
N° Bound: 42.082409
S° Bound: 41.62568
Description

Chicago, IL

Extent Group 1 / Time Frame 1

CC ID: 1279677
Time Frame Type: Range
Start: 2011-11-01
End: 2011-11-15
Description:

Dates of data collection.

Spatial Information

Reference Systems

Reference System 1

CC ID: 1279679

Coordinate Reference System
CRS Type: Geographic 3D
EPSG Code: EPSG:6319
EPSG Name: NAD83(2011)
▾ See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Policy:

Data is available online for no cost bulk and custom downloads
Data Access Constraints:

None
Data Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Distribution Information

Distribution 1

CC ID: 1279681
Start Date: 2023-11-07
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9967
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023-11-07 - Present)
File Name: Custom Download
Description:

Custom download for dataset allowing subsets, projection/datum changes, and derived product generation.
Distribution Format: Not Applicable
Compression: Zip
Review Status: Not Chked

Distribution 2

CC ID: 1279682
Start Date: 2023-11-07
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9967/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023-11-07 - Present)
File Name: Bulk Download
Description:

LAZ files in geographic coordinates and NAVD88 geoid18 heights in meters.
Distribution Format: LAS/LAZ - LASer
Compression: Uncompressed

URLs

URL 1

CC ID: 1279683
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9967/supplemental/Chicago_2011_extent_m9967.kmz
Name: Data extent browse graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

KMZ extent of data.

URL 2

CC ID: 1279684
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9967/supplemental/FINAL_LiDAR_Report_ChicagoIL2011.pdf
Name: Data Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Data report by Woolpert describing the collection and processing of data delivered to SAIC.

Issues

Issue 1

CC ID: 1280207
Issue Date: 2023-11-08
Author: Waters, Kirk
Issue:

Water surface points, including Lake Michigan, are coded as ground in the data.

Issue 2

CC ID: 1279686
Issue Date: 2023-11-07
Author: Waters, Kirk
Issue:

The data report did not specify the NAD83 realization this was collected under and the data was collected the same year as new realization. The data received did not have any georeferencing tags within the data files. NAD83(2011) has been assumed, but it could be NAD83(NSRS2007).

Data Quality

Horizontal Positional Accuracy:

Unknown. Assumed to be less than 1 meter RMSE in order to achieve the measured vertical accuracy.
Vertical Positional Accuracy:

Comparison with bare earth ground surveyed QA/QC points shows a vertical root means square error of 0.082 meters.

Lineage

Lineage Statement:

This dataset was originally collected for NGA by SAIC and Woolpert. After it was released to the public domain, it was made available by the USGS as a Non-Standard Contributed dataset. NOAA obtained the data from USGS and reformatted it for ingestion in the Digital Coast Data Access Viewer.

Sources

USGS Non-Standard Contributed Chicago 2011 133 Cities data

CC ID: 1279687
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: USGS
Citation URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/Non_Standard_Contributed/NGA_US_Cities/Chicago_IL/
Citation URL Name: Source data
Citation URL Description:

Link to the USGS site with the data in UTM 16N.

Process Steps

Process Step 1

CC ID: 1279688
Description:

The LiDAR data was acquired with a Leica ALS50-II 150 kHz Multiple Pulses in Air (MPiA) LiDAR sensor system, on board a Cessna 404. The ALS50-II LiDAR system, developed by Leica Geosystems of Heerbrugg, Switzerland, includes the simultaneous first, intermediate and last pulse data capture module, the extended altitude range module, and the target signal intensity capture module. The system software is operated on an OC50 Operation Controller aboard the aircraft.
Process Date/Time: 2011-11-01 00:00:00

Process Step 2

CC ID: 1279689
Description:

1. Resolved kinematic corrections for three subsystems: inertial measurement unit (IMU), sensor orientation information and airborne GPS data. Developed a blending post-processed aircraft position with attitude data using Kalman filtering technology or the smoothed best estimate trajectory (SBET).

Software: POSPac Software v. 5.3, IPAS Pro v.1.3.

2. Calculated laser point position by associating the SBET position to each laser point return time, scan angle, intensity, etc. Created raw laser point cloud data for the entire survey in .LAS format. Automated line-to-line calibrations were then performed for system attitude

parameters (pitch, roll, heading), mirror flex (scale) and GPS/IMU drift.

Software: ALS Post Processing Software v.2.70, Proprietary Software, TerraMatch v. 10.04.

3. Imported processed .LAS point cloud data into project tiles. Resulting data were classified as ground and non-ground points with additional filters created to meet the project classification specifications. Statistical absolute accuracy was assessed via direct comparisons of ground classified points to ground RTK survey data. Based on the statistical analysis, the LiDAR data was then adjusted in relation to the survey ground control.

Software: TerraScan v.10.018.

4. The .LAS files were evaluated through a series of QA/QC steps to eliminate remaining artifacts and small undulations from the ground class.

Software: TerraScan v.10.018.
Process Date/Time: 2012-01-01 00:00:00

Process Step 3

CC ID: 1279690
Description:

Data was retrieved from USGS on August 2, 2023. Data were converted to geographic NAD83(2011) coordinates and ellipsoid heights in meters for ingestion into the Digital Coast Data Access Viewer. Data were also reformatted into the cloud optimized point cloud version of LAZ format, including using LAS 1.4.
Process Date/Time: 2023-11-07 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov
Source: USGS Non-Standard Contributed Chicago 2011 133 Cities data

Catalog Details

Catalog Item ID: 71320
GUID: gov.noaa.nmfs.inport:71320
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2023-11-07 11:23+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2023-12-08 16:45+0000
Metadata Record Published: 2023-11-07
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2023-11-07
Metadata Review Frequency: 3 Years
Metadata Next Review Date: 2026-11-07