CLPX-Airborne: Airborne GPS Bistatic Radar
Entry ID: NSIDC-0156

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Summary
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.

Related URL
Link: VIEW PROJECT HOME PAGE
Description: CLPX Site


Link: VIEW PROJECT HOME PAGE
Description: Register as a CLPX user


Geographic Coverage
 N: 41.0 S: 39.5  E: -105.0  W: -107.5

Data Set Citation
Dataset Originator/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
Version: 1
Online Resource: http://nsidc.org/data/NSIDC-0156


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

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

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


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
CONTINENT > NORTH AMERICA


Science Keywords
SPECTRAL/ENGINEERING >RADAR    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW COVER    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW COVER    [Definition]
LAND SURFACE >SOILS >SOIL MOISTURE/WATER CONTENT    [Definition]


ISO Topic Category
IMAGERY/BASE MAPS/EARTH COVER
INLAND WATERS
GEOSCIENTIFIC INFORMATION


Platform
Aircraft    [Information]
GPS >Global Positioning System Satellites    [Information]


Instrument
GPS >Global Positioning System    [Information]
GPS RECEIVERS    [Information]


Project
CLPX >Cold Land Processes Field Experiment    [Information]
ESIP >Earth Science Information Partners Program    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]


Keywords
bistatic radar
GPS
GPS data


Data Set Progress
COMPLETE


Data Center
NSIDC Distributed Active Archive Center    [Information]
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 at 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    [Information]
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 at 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: 303.492.4075
Fax: 303.492.2825
Email: mastersd at ucar.edu
Contact Address:
University of Colorado
CB 431/ CCAR
PO Box 3000
City: Boulder
Province or State: CO
Postal Code: 80309-0431
Country: USA


VALERY ZAVOROTNY
Role: INVESTIGATOR
Phone: (303) 497-6616
Email: valery.zavorotny at noaa.gov
Contact Address:
NOAA Environmental Technology Laboratory
325 Broadway
City: Boulder
Province or State: Colorado
Postal Code: 80305-3328
Country: USA


STEPHEN KATZBERG
Role: INVESTIGATOR
Phone: (757) 864-1970
Email: s.j.katzberg at larc.nasa.gov
Contact Address:
M.S. 328
NASA-Langley Research Center
City: Hampton
Province or State: VA
Postal Code: 23681-0001
Country: USA



Creation and Review Dates
DIF Creation Date: 2003-09-29
Last DIF Revision Date: 2014-07-07

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