LiDAR Rivers
 

Data format: Raster Dataset

File or table name: e264_riv

Coordinate system: Universal Transverse Mercator

Theme keywords: elevation, dem, altitude

Abstract: LiDAR data was collected using LSI's proprietary Helix LiDAR system - Novatel GPS and IMAR inertial unit, coupled to a Riegl Q560 digital waveform ranging laser and mounted in a Cessna 185 aircraft. LiDAR was collected at 600m AGL, and a ground speed of 170km/h. Data is in an ASCII XYZ coordinate format.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: Province of Manitoba


Title:
LiDAR Rivers
*File or table name: e264_riv


*Geospatial data presentation form: raster digital data


*Online linkage: \\wpgcvn1212ap10\mb_lib\elv\e26\4_\riv\e264_riv


Description:
Abstract:
LiDAR data was collected using LSI's proprietary Helix LiDAR system - Novatel GPS and IMAR inertial unit, coupled to a Riegl Q560 digital waveform ranging laser and mounted in a Cessna 185 aircraft. LiDAR was collected at 600m AGL, and a ground speed of 170km/h. Data is in an ASCII XYZ coordinate format.

Purpose:
The data was collected in order to build an accurate digital elevation model of the study area.

*Language of dataset: en


Time period of content:
Time period information:
Range of dates/times:
Beginning date: 20071021
Ending date: 20071021

Currentness reference:
ground condition

Status:
Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -100.340033
*East bounding coordinate: -100.093679
*North bounding coordinate: 50.101192
*South bounding coordinate: 49.868815

Local bounding coordinates:
*Left bounding coordinate: 404162.000000
*Right bounding coordinate: 421411.000000
*Top bounding coordinate: 5550460.000000
*Bottom bounding coordinate: 5524898.000000

Keywords:
Theme:
Theme keywords: elevation, dem, altitude

Place:
Place keywords: Rivers, Carnegie, Kemnay, Rapid City, Brandon
Place keyword thesaurus: None

Access constraints: none
Use constraints:
none

Point of contact:
Contact information:
Contact organization primary:
Contact organization: GeoManitoba, Manitoba Conservation and Water Stewardship
 
Contact address:
Address type: mailing and physical address
Address:
1007 Century Street
City: Winnipeg
State or province: Manitoba
Postal code: R3H 0W4
Country: Canada

Contact electronic mail address: MLInfo@gov.mb.ca


Data set credit:
This data set was developed for Province of Manitoba by LiDAR Services International Inc.

*Native dataset format: Raster Dataset
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500


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Data Quality Information:


Attribute accuracy:
Attribute accuracy report:
Ground points were initially classified using an automatic classification routine. The ground surface model was edited and verified by creating a shaded relief model and identifying erroneous points and voids in the ground surface.

Logical consistency report:
Data was verified by viewing shaded relief models. Points were checked against those from adjacent flightlines to ensure positional accuracy. The intensity of the LiDAR returns was viewed and compared against adjacent data to verify horizontal positional accuracy.

Positional accuracy:
Horizontal positional accuracy:
Horizontal positional accuracy report:
Horizontal accuracy is verified by comparison of horizontally identifiable features in the LiDAR data against similar features in another flightline of LiDAR data over the same geographic area. Horizontal accuracy is also verified against known coordinates of building roof edges at the calibration site used for that flight.

Vertical positional accuracy:
Vertical positional accuracy report:
Vertical accuracy is verified by comparison of points from the calibration flights to conventionally surveyed ground points at the calibration site.

Lineage:
Source information:
Source citation:
Citation information:
Originators: Geodetic Survey Division


Title:
95R500


Publication date: 1999
Geospatial data presentation form: Document


Publication information:
Publication place: Unknown
Publisher: Geodetic Survey Division

Type of source media: Electronic mail system
Source citation abbreviation:
None
Source contribution:
Control point used to build GPS network from which positions of kinematic GPS solution and calibration points were derived. NAD83 published coordinates are Lat: 49 53 09.2928, Long: -99 54 41.0588, Ellipsoid Height: 373.841m. NAD 83 adjusted coordinates are Lat: 49 53 09.29264, Long: -99 54 41.05828, Ellipsoid Height: 373.846m. This point was not occupied during kinematic GPS collection.

Source time period of content:
Time period information:
Range of dates/times:
Beginning date: 1999
Ending date: Present

Source currentness reference:
publication date

Source information:
Source citation:
Citation information:
Originators: Manitoba Conservation, Survey Services Branch


Title:
98R214


Publication date: 1998
Geospatial data presentation form: Document


Publication information:
Publication place: Unknown
Publisher: Geodetic Survey Division

Type of source media: Electronic mail system
Source citation abbreviation:
None
Source contribution:
Control point used to build GPS network from which positions of kinematic GPS solution and calibration points were derived. NAD83 adjusted coordinates derived from Assiniboine River LiDAR survey (2007) are Lat: 50 02 57.33065, Long: -100 21 08.44169, Ellipsoid Height: 462.327m. This point was occupied during kinematic GPS collection; adjusted coordinates were used during processing.

Source time period of content:
Time period information:
Range of dates/times:
Beginning date: 1998
Ending date: Present

Source currentness reference:
Publication date

Source information:
Source citation:
Citation information:
Originators: LiDAR Services International


Title:
BRANAPRT


Publication date: 2007
Geospatial data presentation form: Document


Publication information:
Publication place: Calgary, AB
Publisher: LiDAR Services International

Type of source media: Electronic mail system
Source citation abbreviation:
None
Source contribution:
Control point used to observe during kinematic collection from which positions of kinematic GPS solution were derived. NAD 83 adjusted coordinates are Lat: 49 54 12.93657, Long: -99 56 44.43657, Ellipsoid Height: 383.146m. This point was occupied during kinematic GPS collection.

Source time period of content:
Time period information:
Range of dates/times:
Beginning date: 2007
Ending date: Present

Source currentness reference:
Publication date

Process step:
Process description:
GPS static network was processed and adjusted, and kinematic GPS data was processed using coordinates obtained from the static network adjustment. Kinematic GPS and inertial information were combined to create the final position and attitude trajectory. The position and attitude trajectory was combined with data from the scanning laser to produce a raw XYZ point cloud.

Process date: 20071108


Process contact:
Contact information:
Contact organization primary:
Contact person: Ryan Audette
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
Overlapping flight lines were compared at the calibration site and within the project area to determine the boresight corrections required to remove systematic errors. Raw point clouds were generated using the attitude information and scanning laser ranges.

Process date: 20071112


Process contact:
Contact information:
Contact organization primary:
Contact person: Ryan Audette
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
Raw XYZ point clouds were combined and divided into 1km x 1km tiles. Redundant data between overlapping flightlines was removed.

Process date: 20071114


Process contact:
Contact information:
Contact organization primary:
Contact person: Ryan Burke
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
#250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
An automatic ground classification routine was run on the LiDAR data using TerraScan, and the results were verified by viewing a shaded relief model. Points that existed above ground were classified to vegetation and then buildings were classified manually from the vegetation points using the shaded relief model to identify them. Points that could not be identified as vegetation or ground were classified as non-ground; bridges , trains, and transmission structures were classified to non-ground.

Process date: 20071116


Process contact:
Contact information:
Contact organization primary:
Contact person: Ryan Burke
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
LiDAR data was adjusted from ellipsoid to orthometric elevation using the CGVD28 height model.

Process date: 20071119


Process contact:
Contact information:
Contact organization primary:
Contact person: Ryan Burke
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
#250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
A gridded ASCII XYZ file with a horizontal spacing of 1m was created. Elevations were derived from triangle facets in the TIN model (built using ground points only) at the centre of the grid cell.

Process date: 20080222


Process contact:
Contact information:
Contact organization primary:
Contact person: David Ronneberg
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
#250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
A surface was created from the ground, vegetation, building, and non-ground points in TerraScan, and a gridded ASCII XYZ file with a horizontal spacing of 1m was created. Elevations were derived from the highest point elevation within the grid cell.

Process date: 20080225


Process contact:
Contact information:
Contact organization primary:
Contact person: David Ronneberg
Contact organization: LiDAR Services International Inc.

Contact address:
Address type: Mailing and physical
Address:
#250, 3115 12th Street NE
City: Calgary
State or province: Alberta
Postal code: T2E 7J2
Country: Canada

Contact voice telephone: 403 517 3130
Contact facsimile telephone: 403 291 5390


Process step:
Process description:
copied compressed .gz files to local disk
unzipped using 7 ZIP
created a grid from the first text file to be used as the snap grid
CREATETIN
GENERATE POINT
TINARC
POINTGRID
 
ran aml called ld_lidar_grid to generate grids from all text files

used mosaic to new grid in arcgis toolbox 9.2
used 32 bit float
1.0 metre cell
mean

used con(isnull (lidar), focalmean(lidar, rectangle, 3, 3,), lidar) to fill in gaps between the tiles of data.
 
Rivers full feature grids and bare earth grids were successfully created

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Spatial Data Organization Information:


*Direct spatial reference method: Raster


Raster object information:
*Image format:
*Number of bands: 1


*Row count: 25562
*Column count: 17249
*Vertical count: 1


*Cell size X direction: 1.000000
*Cell size Y direction: 1.000000


*Bits per pixel: 32
*Pyramid layers: FALSE
*Image colormap: FALSE
*Compression type: Default


*Raster object type: Grid Cell
*Raster display type: matrix values
*Raster origin: Upper Left


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Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_UTM_Zone_14N
*Geographic coordinate system name: GCS_North_American_1983

Planar:
Grid coordinate system:
*Grid coordinate system name: Universal Transverse Mercator
Universal Transverse Mercator:
*UTM zone number: 14
Transverse mercator:
*Scale factor at central meridian: 0.999600
*Longitude of central meridian: -99.000000
*Latitude of projection origin: 0.000000
*False easting: 500000.000000
*False northing: 0.000000

Planar coordinate information:
*Planar coordinate encoding method: row and column
Coordinate representation:
*Abscissa resolution: 1.000000
*Ordinate resolution: 1.000000
*Planar distance units: meters

Geodetic model:
*Horizontal datum name: North American Datum of 1983
*Ellipsoid name: Geodetic Reference System 80
*Semi-major axis: 6378137.000000
*Denominator of flattening ratio: 298.257222

Vertical coordinate system definition:
Altitude system definition:
Altitude datum name: NAD83 adjusted to Orthometric (CGVD28) using HTv2.0
Altitude resolution: 0.01
Altitude distance units: Meters
Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

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Entity and Attribute Information:


Overview description:
Entity and attribute overview:
The only attributes assigned were point classification during the processing phase using TerraScan. See process steps for details.

Entity and attribute detail citation:
None

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Distribution Information:


Resource description: Downloadable Data


Standard order process:
Digital form:
Digital transfer information:
*Transfer size: 1689.390
*Dataset size: 1689.390

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Metadata Reference Information:


*Metadata date: 20081022


*Language of metadata: en


Metadata contact:
Contact information:
Contact organization primary:
Contact organization: GeoManitoba, Manitoba Conservation and Water Stewardship
 
Contact address:
Address type: Mailing and physical
Address:
1007 Century Street
City: Winnipeg
State or province: Manitoba
Postal code: R3H 0W4
Country: Canada

Contact electronic mail address: MLInfo@gov.mb.ca


*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time


Metadata extensions:
*Online linkage: http://www.esri.com/metadata/esriprof80.html
*Profile name: ESRI Metadata Profile

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