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CLPX-Airborne: Airborne GPS Bistatic Radar

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Entry ID

NSIDC-0156

Summary

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.

Geographic Coverage

 

Spatial Coordinates:
N: 41°     S: 39.5°     E: -105°     W: -107.5°    

Data Set Citation

Dataset Creator: Masters, D.
Dataset Title: CLPX-Airborne: Airborne GPS Bistatic Radar
Dataset Release Date: 2003-09-29
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0156.html

Temporal Coverage

Start Date: 2002-02-19
Stop Date: 2002-02-21

Start Date: 2003-02-22
Stop Date: 2003-02-24

Start Date: 2003-03-25
Stop Date: 2003-03-31

Location Keywords

  • CONTINENT NORTH AMERICA
  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA

Science Keywords

  • Cryosphere Snow/Ice Snow Cover
  • Land Surface Soils Soil Moisture/Water Content
  • Spectral/Engineering Radar
  • Terrestrial Hydrosphere Snow/Ice Snow Cover

Ancillary Keywords

  • bistatic radar
  • GPS
  • GPS data

Platform

  • AIRCRAFT
  • GPS Global Positioning System Satellites

Instrument

  • GPS Global Positioning System
  • GPS RECEIVERS

Project

  • CLPX Cold Land Processes Field Experiment

Data Set Progress

complete

Data Center

NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Format: HDF

Personnel

Dallas Masters
Role: INVESTIGATOR
Phone: 1 303 492.4075
Fax: 1 303 492.2825
Contact Address:

  • University of Colorado
  • University of Colorado
  • University of Colorado
  • CB 431/ CCAR

City: Boulder
Province or State: CO
Postal Code: 80309-0431
Country: USA

Dallas Masters
Role: INVESTIGATOR
Phone: 1 303 492.4075
Fax: 1 303 492.2825
Contact Address:

  • University of Colorado
  • University of Colorado
  • University of Colorado
  • CB 431/ CCAR

City: Boulder
Province or State: CO
Postal Code: 80309-0431
Country: USA

Valery Zavorotny
Role: INVESTIGATOR
Email: valery.zavorotny@noaa.gov
Contact Address:

  • NOAA Environmental Technology Laboratory
  • NOAA Environmental Technology Laboratory
  • 325 Broadway

City: Boulder
Province or State: Colorado
Postal Code: 80305-3328
Country: US

Stephen Katzberg
Role: INVESTIGATOR
Contact Address:

  • NASA Langley Research Center
  • M.S. 328
  • NASA-Langley Research Center

City: Hampton
Province or State: VA
Postal Code: 23681-0001

Related URL

VIEW PROJECT HOME PAGE
CLPX Site

VIEW PROJECT HOME PAGE
Register as a CLPX user

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-09-29
Last DIF Revision Date: 2013-10-10

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

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

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