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J:\_Ottawa_Gatineau_Region\City_of_Ottawa\LiDAR

Description
Description:

LiDAR (Light Detection And Ranging) is a type of remote sensing. It works like radar except with light or laser beams instead. The time it takes for the laser to travel from the data collector (often mounted on a plane or helicopter) to a surface and back is used to calculate the distance to an object. Lidar can be used to provide highly accurate elevation data. The data is collected as points with elevation (x, y, z). These points can be turned into DEMs (Digital Elevation Models).

Available Themes:

2015: available in TIF and LAS formats; coverage is south of downtown to Greenbelt and from Stittsville to Navan (fits between 2014 and 2012 LiDAR collections)

2014: available in TIF and LAS formats; coverage is downtown Ottawa and along Ottawa River from Huntley (west) to Cumberland (east)

2012: available in TIF and LAS formats; coverage includes mainly rural Ottawa areas (outside the Greenbelt)

2006: available in TIF and LAS (ground and non-ground separately) formats; coverage is urban Ottawa area

Interactive Index:
Data Producer:

City of Ottawa

Metadata
Publication Date:
2015, 2014, 2012, 2006
Projection:

2012, 2014 & 2015: NAD83 CSRS MTM zone 9 (Ottawa area) & UTM zone 18 (Conservation Authority area); further details in PDF metadata documents below

Transverse_Mercator
Authority: Custom

Projection: Transverse_Mercator
false_easting: 304800.0
false_northing: 0.0
central_meridian: -76.5
scale_factor: 0.9999
latitude_of_origin: 0.0
Linear Unit: Meter (1.0)

Resolution:
1m (horizontal resolution); 2015 & 2014 horizontal resolution (in .las files) of 8-25cm
Authorized Users:
Carleton University students, faculty and staff
Disclaimer:

Users are required to sign a Data Use Agreement before files may be acquired. All use of the data shall acknowledge the City of Ottawa as the owner of copyright. Data is provided 'as is' and the City of Ottawa makes no warranties as to the condition, quality, completeness or freedom from error of any dataset, or its fitness for a particular use.

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