Mississauga Digital Orthoimagery, 1991

Coordinate system: 26917

Abstract:

This City of Mississauga aerial photography covers the area of Mississauga. These photos are in black and white, and were taken in 1991 by the Airborne Sensing Corporation at a scale of 1:8,000.

The first aerial surveys of Mississauga were undertaken in 1944. Since then, the city has produced aerial photography every five to ten years until 2002, when it became annual.

Note: These are individual tiles that have no geolocation associated with them. A mosaic is not available for this year. Available for download are the original ECW files, as well as TIF files, located in folders that correspond with the original file name.

Metadata Information

Language: eng; CAN

Last Update: 2017-07-20

Other Maintenance Requirements:
Metadata was created by the University of Toronto Mississauga Library using documentation provided to Scholars Portal by the City of Mississauga.

Metadata Contact:
University of Toronto Mississauga Library Mississauga Ontario , Canada

https://library.utm.utoronto.ca/datagis/support

Contact Instructions:
gis@scholarsportal.info

Metadata Standard:
North American Profile of ISO19115:2003 - Geographic Information
Citation Information

Series
Name: City of Mississauga

City of Mississauga Transportation and Works Department Mississauga Ontario, Canada

Scholars Portal Toronto Ontario, Canada

Themes or Categories of the Resource: imageryBaseMapsEarthCover

Keywords:
Imagery, 1991, Mississauga, Raster

Aerial photography, Photographie aérienne, Photography, Photographie (Art)

Place Keywords:
Continent > North America > Canada > Ontario

Purpose:
To establish an electronic dataset of aerial photographs for the city of Mississauga, suitable for reference and mapping purposes.

Status: completed

Update Frequency: notPlanned

Spatial Representation Type: grid

Processing Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1.5686

Extent

West Longitude: -79.825447

East Longitude: -79.521741

North Latitude: 43.760965

South Latitude: 43.469439

Supplemental Information:
The air photos can be used alone or combined with geospatial data for terrain visualization, environmental monitoring and land use assessment. They also provide a base map that can be integrated with other geographic information to give a rich visual context when studying social, economic or environmental problems.
Spatial Representation - Grid:

Number of dimensions: 2

Axis dimensions properties:
Reference System Information

Reference System Identifier

Value: 26917

Code Space: http://www.epsg-registry.org/
Data Quality Information

Scope Level: dataset

Process step:

The original format of the raster image are .ecw and .ers.

The digitized Aerial Imagery was originally stored by the City of Mississauga in ERMapper ECW format. In most cases, a single orthometric file covers the entire city area. All maps use rectangular coordinate values expressed in metres and based on the 6 degree Universal Transverse Mercator system, NAD 1983. Aerial imagery for Mississauga is available from 1944 to present. Original images from 1986 to 2003 used the North American 1927 (NAD27) datum. No datum information is known for images prior to 1986. Images prior to 1986 were projected to the NAD83 datum by the City of Mississauga.
Distribution Information

Distributor:

Transportation and Works Department, City of Mississauga Mississauga Ontario, Canada

Mississauga Digital Orthoimagery, 1991

Metadata Information

Citation Information

Spatial Representation - Grid:

Reference System Information

Data Quality Information

Distribution Information