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Global Change Master Directory (GCMD)
CV - 580 Airborne-SAR, Canada
Entry ID: CANADA_CCRS_CV-580Airborne-SAR


Summary
Abstract: The C/X-SAR can provide imagery of all classes of terrain, ocean, or ice
scenes. The imagery can be compared easily with mapped information. It is
possible to monitor natural resources (agriculture, forestry, geology),
temporal variations (urban growth, sea ice and icebergs, ocean waves and
currents, shipping and fishing), and disasters (oil spills, floods, fires).
CCRS Convair 580 is a fully equipped, versatile aircraft for remote sensing.
The aircraft can be deployed from any airport with a 1520-m (5000-foot)
hard-surface runway. It has a range of 2300 km (1450 miles), or about five
hours of flying time.The C-SAR data provides an opportunity for educational
studies relating to SAR.

Related URL
Link: View Related Information
Description: GeoConnections Discovery Portal. Canada's IDN Node.

Geographic Coverage
 N: 80.0 S: 42.0  E: -52.0  W: -140.0

Data Set Citation
Dataset Creator: Government of Canada, Natural Resources Canada, Earth Sciences Sector, Geomatics Canada, Canada Centre for Remote Sensing
Dataset Title: CV - 580 Airborne-SAR, Canada
Online Resource: http://geogratis.cgdi.gc.ca/download/cv580/


Temporal Coverage
Start Date: 1989-04-01


Location Keywords
CONTINENT > NORTH AMERICA > CANADA
CONTINENT > NORTH AMERICA > CANADA > Alberta
CONTINENT > NORTH AMERICA > CANADA > British Columbia
CONTINENT > NORTH AMERICA > CANADA > Manitoba
CONTINENT > NORTH AMERICA > CANADA > New Brunswick
CONTINENT > NORTH AMERICA > CANADA > Newfoundland And Labrador
CONTINENT > NORTH AMERICA > CANADA > Northwest Territories
CONTINENT > NORTH AMERICA > CANADA > Nova Scotia
CONTINENT > NORTH AMERICA > CANADA > Nunavut
CONTINENT > NORTH AMERICA > CANADA > Ontario
CONTINENT > NORTH AMERICA > CANADA > Prince Edward Island
CONTINENT > NORTH AMERICA > CANADA > Quebec
CONTINENT > NORTH AMERICA > CANADA > Saskatchewan
CONTINENT > NORTH AMERICA
GEOGRAPHIC REGION > MID-LATITUDE
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
GEOGRAPHIC REGION > WESTERN HEMISPHERE


Science Keywords
BIOSPHERE >VEGETATION >VEGETATION COVER    [Definition]
CRYOSPHERE >GLACIERS/ICE SHEETS >GLACIERS    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW COVER    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW COVER    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >SURFACE WATER FEATURES >LAKES/RESERVOIRS    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >SURFACE WATER FEATURES >RIVERS/STREAMS    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >SURFACE WATER FEATURES >WETLANDS    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >EROSION    [Definition]
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES    [Definition]
SPECTRAL/ENGINEERING >RADAR >RADAR IMAGERY    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >FIRE ECOLOGY >FIRE OCCURRENCE    [Definition]


ISO Topic Category
BIOTA
ELEVATION


Platform
AIRCRAFT    [Information]


Instrument
RADAR >Radio Detection and Ranging    [Information]
SAR >Synthetic Aperture Radar    [Information]


Quality
NOTE - THIS IS COMPLEX DATA. For radar systems, this implies that the
representation of a signal or data file contains both magnitude and
phase measures. Many viewers will not accommodate this data
type. There is a .tiff format composite preview available with the
images that can be downloaded.

The first group consists of a "*sso.img" and "*sso.img_def" file. The
"*sso.img" file contains the 16 element stokes scattering matrix
values for each pixel. Each element is stored as a floating point
value using 32 bits. The "*sso.img_def" text file describes the
"*sso.img" file. The image size is recorded in "number of pixels" and
"number of lines". The band order is specified in "data
organization". This file also gives the georeferencing data. The top
left corner is found by adding "project origin" and "file start". The
co-ordinates are in the projection given in "map projection". The
ground pixel spacing is given by "pixel size on ground".

The second group of files is created by converting the "*sso.img" file
into the four files "*hhsso.img", "*hvsso.img", "*vhsso.img", and
"*vvsso.img". Only the relative phase of each pixel is maintained in
this process so the phase of the HH image is set to zero. Each "*.img"
file has an associated "*.hdr" text file which provides the number of
lines and samples. The four polarization files are complex float32
data in (I,Q) pairs.

The final group is one or more "*.tif" files which provide a magnitude
image of the coverage area. The three channels (Red, Green, Blue) are
(HH,HV,VH).

All of these products are resampled from the full resolution
post-processed and calibrated data which is not available on
geogratis. The raw data is nearly 10 times larger and not
georeferenced.

The synthetic aperture radar (SAR) is in service on board a Convair 580
aircraft. Operating C band, the C-SAR is a sensor developed for use by the
research and development community.

The radar is capable of mapping in three operating modes: nadir,
narrow and wide swath. The aircraft altitude is variable, but 6 km
(20,000 ft) is optimum. At this altitude the high-resolution (6m x 6m)
imagery can be gathered over depression angles from 16 degrees to 90
degrees (nadir mode), or 14 degrees to 45 degrees (narrow
swath). Nadir mode is useful in terrain of high relief or for
simulation of satellite SAR geometry. Lower resolution (20m x 10m)
imagery can be obtained over a wide swath of about 63 km, for maximum
ground coverage, with depression angles varying from 5 degrees to 45
degrees.

Users with technical questions related to the performance and
capabilities of the SAR are asked to direct questions to Bob Hawkins
at Canada Centre for Remote Sensing (CCRS).


Access Constraints
None


Use Constraints
None


Keywords
Agriculture
Exploration Geology
Forestry
Ice
Mapping
Surface Vegetation


Data Set Progress
IN WORK


Data Center
Canada Centre For Mapping And Earth Observation, Earth Sciences Sector, Natural Resources Canada    [Information]
Data Center URL: http://ceonet.cgdi.gc.ca/

Data Center Personnel
Name: BOB HAWKINS
Phone: +01-613-995-1067
Fax: +01-613-947-1383
Email: robert.hawkins at ccrs.nrcan.gc.ca
Contact Address:
588 Booth Street
City: Ottawa
Province or State: Ontario
Postal Code: K1A 0Y7
Country: Canada



Distribution
Fees: Gratuit-Free


Personnel
BOB HAWKINS
Role: TECHNICAL CONTACT
Phone: +01-613-995-1067
Fax: +01-613-947-1383
Email: robert.hawkins at ccrs.nrcan.gc.ca
Contact Address:
588 Booth Street
City: Ottawa
Province or State: Ontario
Postal Code: K1A 0Y7
Country: Canada


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2002-07-17
Last DIF Revision Date: 2017-08-23
Future DIF Review Date: 2006-06-18



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