CLPX-Airborne: Airborne GPS Bistatic Radar

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Identification Information:

Dataset Identifier:

NSIDC-0156

Citation:

Citation Information:

Originator: Masters, D.
Publication Date: 20030929
Title: CLPX-Airborne: Airborne GPS Bistatic Radar
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0156.html

Description:

Abstract:

This data set consists of measurements of GPS signals reflected from the Earth's surface and collected on an airborne platform. A modified GPS Delay Mapping Receiver (DMR) tracks and measures the direct, line-of-sight, right hand circulary polarized (RHCP) signal of a GPS satellite. It also simultaneously measures the delayed, Earth-reflected, near-specular, LHCP GPS signal. These measurements are a form of bistatic radar. The measurements can be used to estimate the surface scattering coefficient and path delays between the direct and reflected GPS signals. Over land, scattering coefficients can be used to estimate changes in surface soil moisture. Over water surfaces, the reflected pulses can be used to sense roughness and derive wind speeds. The bistatic range measurements can also be used to estimate the receiver height above the surface in a form of aircraft altimetry.

Data were collected throughout each Meso-cell Study Area (MSA) within the Cold Land Processes Field Experiment (CLPX) Small Regional Study Area (SRSA, 39.5 N-41 N, 105 W-107.5 W). Spatial resolution of these data is variable depending on airborne height and scattering regime (specular or rough). Data were collected 19 and 21 February 2002, and 22-24 February and 25, 30, 31 March 2003. Data are available via FTP.

Purpose: scientific research

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 20020219
Ending Date: 20030331

Currentness Reference: publication date

Status:

Progress: Complete
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

 

West Bounding Coordinate: -107.5°
East Bounding Coordinate: -105°
North Bounding Coordinate: 41°
South Bounding Coordinate: 39.5°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Cover
Theme Keyword: EARTH SCIENCE Land Surface Soils Soil Moisture/Water Content
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Cover

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: CLPX Cold Land Processes Field Experiment

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: GPS Global Positioning System
Theme Keyword: GPS RECEIVERS

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: AIRCRAFT
Theme Keyword: GPS Global Positioning System Satellites

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: bistatic radar
Theme Keyword: GPS
Theme Keyword: GPS data

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent North America
Place Keyword: Continent North America United States Of America

Access Constraints:

None

Use Constraints:

None

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: Dallas Masters
Contact Organization: University of Colorado, University of Colorado

Contact Address:

Address Type: mailing
Address:
  • University of Colorado
  • CB 431/ CCAR
City: Boulder
State or Province: CO
Postal Code: 80309-0431
Country: USA

Contact Voice Telephone: 1 303 492.4075
Contact Facsimile Telephone: 1 303 492.2825

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC User Services

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Resource Description:

NSIDC-0156

Distribution Liability:

NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

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Metadata Reference Information:

Metadata Date:

20131010

Metadata Review Date:

20131010

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Metadata Standard Name:

FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

Metadata Standard Version:

FGDC-STD-012-2002

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Metadata Views

FGDC Text-Only

Federal Geographic Data Committee (FGDC) in plain text

FGDC XML

Federal Geographic Data Committee (FGDC) in Extensible Markup Language (XML)

DIF HTML

NASA Global Change Master Directory (GCMD) Directory Interchange Format (DIF)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata