Airborne Laser Polarization Experiment

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: James Kalshoven
Publication_Date: Unknown
Title: Airborne Laser Polarization Experiment
Edition:
Geospatial_Data_Presentation_Form: ASCII Tables
Series_Information:
Series_Name: FED MAC Home Page
Issue_Identification:
Publication_Information:
Publication_Place: NASA/GSFC
Publisher: NASA/GSFC
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
Forest Ecosystem Dynamics Multisensor Airborne Campaign (FED MAC): Airborne Laser Polarization Experiment The Biospheric Sciences Branch (formerly Earth Resources Branch) within the Laboratory for Terrestrial Physics at NASA's Goddard Space Flight Center and associated University investigators are involved in a research program entitled Forest Ecosystem Dynamics (FED) which is fundamentally concerned with vegetation change of forest ecosystems at local to regional spatial scales (100 to 10,000 meters) and temporal scales ranging from monthly to decadal periods (10 to 100 years). The nature and extent of the impacts of these changes, as well as the feedbacks to global climate, may be addressed through modeling the interactions of the vegetation, soil, and energy components of the boreal ecosystem. A new remote sensing instrument, the Airborne Laser Polarization Sensor (ALPS), mounted on a helicopter, was used to make multispectral radiometric and polarization measurements of the Earth's surface using a polarized laser light source. The ALPS system consists of a pulsed, polarized laser source, an optical receiver package, a video camera and recorder, and data acquisition and analysis hardware and software. The choice of laser wavelengths is limited to frequencies from the ultraviolet to the near-infrared by the photo-cathode response of the selected photo multiplier tube (PMT) detectors. Twelve PMTs were used corresponding to the 12 channels of data: Channels 1,2,3,4,9 & 10 have 1090 nm bandpass filters. The reminder are for 532 nm. Channels 9 and 11 have no polarization filters. For each wavelength, polarization filters are mounted in front of each PMT at angles relative to the transmitted polarization. A pulsed (7 ns) Nd:YAG laser is employed. It operates in the infrared at 1060 nm and the visible at 532 nm. The 532 nm green wavelength can be seen near the center of the TV screen as it hits the surface in most cases. This is used for ground truth correlation. The spot is about 20 cm in diameter from 100 meters altitude. In these data for ALPS Experiment for the FED MAC 90, the file tabulation refers to data files taken on September 9 and 11. A standard VHS video tape is available (the master tapes are recorded at the SP speed on Super-VHS). The first half of this tape is from a camera coaxial with the laser transmission. Time on the tape correspond to file times while oral comments on the tape supplement the general comments. The second half of the tape consists primarily of site descriptive narration on the ground and some pictures of the helicopter setup. The FED Home Page is at: "http://forest.gsfc.nasa.gov/".
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Walthall, C.L., M. Kim, D.L. Williams, B.W. Meeson, P.A. Agbu, J.A. Newcomer, and E.L. Levine, 1993. Data sets for modeling: a retrospective collection of bidirectional reflectance and forest ecosystem dynamics multisensor aircraft campaign data sets. Remote Sensing of Environment; 46:340-346. Kalshoven, J.E., and P.W. Dabney. 1993. Remote sensing of the Earth's surface with an airborne polarized laser. IEEE Transactions on Geoscience and Remote Sensing; 31:438-446.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19900909
Ending_Date: 19900911
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -68.0
East_Bounding_Coordinate: -68.0
North_Bounding_Coordinate: 45.0
South_Bounding_Coordinate: 45.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > REFLECTED INFRARED
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > SENSOR COUNTS
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR BACKSCATTER
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > SENSOR COUNTS
Theme_Keyword: AIRCRAFT
Theme_Keyword: HELICOPTER
Theme_Keyword: ALPS > AIRBORNE LASER POLARIZATION SENSOR
Theme_Keyword: LASERS > LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION
Theme_Keyword: FED MAC > FOREST ECOSYSTEM DYNAMICS MULTISENSOR AIRBORNE CAMPAIGN
Theme_Keyword: Ashphalt
Theme_Keyword: Bog
Theme_Keyword: Fed Mac
Theme_Keyword: Forest Canopy
Theme_Keyword: Hemlock
Theme_Keyword: Sphagnum
Theme_Keyword: Spruce
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JAMES E. KALSHOVEN
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Mailstop 400.0
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Electronic_Mail_Address: james.e.kalshoven@nasa.gov
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/HBSL/BSB/FED > Forest Ecosystem Dynamics Project, Biospheric Sciences Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
Contact_Person: BRUCE COOK
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA
Address: Goddard Space Flight Center
Address: Mailstop 614.4
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Electronic_Mail_Address: bruce.cook@nasa.gov
Resource_Description: FEDMAC_ALPS
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://forest.gsfc.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Free
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Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20110505
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: TYLER B. STEVENS
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Global Change Master Directory
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: (301) 614-6898
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Tyler.B.Stevens@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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