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CV - 580 Airborne-SAR, Canada
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Distribution Information
- Metadata Reference Information
Identification Information:
- Citation:
-
- Citation Information:
-
- Originator:
- Government of Canada, Natural Resources Canada, Earth Sciences Sector
- Publication Date:
- 2002-07-17
- Title:
- CV - 580 Airborne-SAR, Canada
- Geospatial Data Presentation Form:
- Digital, Raster Digital Data, Remote-sensing Data > Airborne
- Online Linkage:
-
http://geogratis.ca/geogratis/fr/option/select.do?id=F28B1581-1235-933F-A3EB-88C64E1274C4
- Online Linkage:
-
http://geogratis.cgdi.gc.ca/contexts/geogratisCV580SAR_v100.xml
- Online Linkage:
- ftp://ftp.geogratis.gc.ca/cv580/
- Description:
-
- 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.
- Purpose:
- The C-SAR data provides an opportunity for educational studies relating to SAR.
- Supplemental Information:
- 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). Sources: AIRCRAFT Sensors: RADAR > Radio Detection and Ranging SAR > Synthetic Aperture Radar
- Time Period of Content:
-
- Time Period Information:
-
- Range of Dates/Times:
-
- Beginning Date:
- 1989-04-01
- Ending Date:
- 0000-01-01
- Status:
-
- Progress:
- Complete
- Maintenance and Update Frequency:
- As needed.
- Spatial Domain:
-
- Bounding Coordinates:
-
- West Bounding Coordinate:
- -140
- East Bounding Coordinate:
- -52
- North Bounding Coordinate:
- 80
- South Bounding Coordinate:
- 42
- Keywords:
-
- Theme:
-
- Theme Keyword Thesaurus:
- Resource Types
- Theme Keyword:
- Dataset
- Theme Keyword:
- Raster/Matrix
- Theme:
-
- Theme Keyword Thesaurus:
- NRCan
- Theme Keyword:
- Biology and Ecology
- Theme Keyword:
- Imagery and Basemaps
- Place:
-
- Place Keyword Thesaurus:
- GCMD
- Place Keyword:
- Countries > Canada
- Place Keyword:
- Global Regions > Mid-latitude
- Place Keyword:
- Global Regions > North America
- Place Keyword:
- Global Regions > Northern Hemisphere
- Place Keyword:
- Global Regions > Western Hemisphere
- Place:
-
- Place Keyword Thesaurus:
- CEONET
- Place Keyword:
- Canada > Alberta
- Place Keyword:
- Canada > British Columbia
- Place Keyword:
- Canada > Manitoba
- Place Keyword:
- Canada > New Brunswick
- Place Keyword:
- Canada > Newfoundland And Labrador
- Place Keyword:
- Canada > Northwest Territories
- Place Keyword:
- Canada > Nova Scotia
- Place Keyword:
- Canada > Nunavut
- Place Keyword:
- Canada > Ontario
- Place Keyword:
- Canada > Prince Edward Island
- Place Keyword:
- Canada > Quebec
- Place Keyword:
- Canada > Saskatchewan
- Access Constraints:
- None
- Use Constraints:
- Licensing information located at http://geogratis.ca/geogratis/en/licence.jsp
- Point of Contact:
-
- Contact Information:
-
- Contact Person Primary:
-
- Contact Person:
- User Support Group
- Contact Organization:
- Government of Canada, Natural Resources Canada, Earth Sciences Sector
- Contact Address:
-
- Address:
- 2144 King Street West, Suite 010
- City:
- Sherbrooke
- State or Province:
- Quebec
- Postal Code:
- J1J 2E8
- Country:
- CAN
- Contact Voice Telephone:
- +01-819-564-5600 / 1-800-661-2638 (Canada and USA)
- Contact Facsimile Telephone:
- +01-819-564-5698
- Contact Electronic Mail Address:
- geoginfo@NRCan.gc.ca
Data Quality Information:
- Lineage:
-
- Source Information:
-
- Source Scale Denominator:
- 20000
Spatial Data Organization Information:
- Direct Spatial Reference Method:
- Raster
Spatial Reference Information:
- Horizontal Coordinate System Definition:
-
- Geographic:
-
- Latitude Resolution:
- 1
- Longitude Resolution:
- 1
- Geographic Coordinate Units:
- Decimal degrees
Distribution Information:
- Distributor:
-
- Contact Information:
-
- Contact Person Primary:
-
- Contact Person:
- User Support Group
- Contact Organization:
- geogratis.gc.ca
- Contact Address:
-
- Address:
- 2144 King Street West, Suite 010
- City:
- Sherbrooke
- State or Province:
- Quebec
- Postal Code:
- J1J 2E8
- Country:
- CAN
- Contact Voice Telephone:
- +01-819-564-5600 / 1-800-661-2638 (Canada and USA)
- Contact Facsimile Telephone:
- +01-819-564-5698
- Contact Electronic Mail Address:
- geoginfo@NRCan.gc.ca
- Standard Order Process:
-
- Digital Form:
-
- Digital Transfer Information:
-
- Format Name:
- Radar Raster Data (.img, .img_def, .hdr), Tiff
- File Decompression Technique:
- ZIP compression software
- Digital Transfer Option:
-
- Online Option:
-
- Computer Contact Information:
-
- Network Address:
-
- Network Resource Name:
-
http://geogratis.ca
- Fees:
- Gratuit-Free
Metadata Reference Information:
- Metadata Date:
- 2002-07-17
- Metadata Review Date:
- 2010-05-17
- Metadata Future Review Date:
- 2010-04-07
- Metadata Contact:
-
- Contact Information:
-
- Contact Person Primary:
-
- Contact Person:
- Bob Hawkins
- Contact Organization:
- Government of Canada, Natural Resources Canada, Earth Sciences Sector
- Contact Position:
- Research Scientist
- Contact Address:
-
- Address:
- 588 Booth Street, Room 461
- City:
- Ottawa
- State or Province:
- Ontario
- Postal Code:
- K1A 0Y7
- Country:
- CAN
- Contact Voice Telephone:
- +01-613-995-1067
- Contact Facsimile Telephone:
- +01-613-947-1383
- Contact Electronic Mail Address:
- robert.hawkins@ccrs.nrcan.gc.ca
- Metadata Standard Name:
- FGDC Content Standard for Digital Geospatial Metadata
- Metadata Standard Version:
- FGDC-STD-001-1998
- Metadata Time Convention:
- Local time
