[Parameters: Topic='SPECTRAL/ENGINEERING', Term='SENSOR CHARACTERISTICS']
6070509_Eklutna_LIDAREntry ID: 6070509_Eklutna
Abstract: The LIDAR data sets are generated using an Optech "Gemini" LIDAR data acquisition system mounted onboard AERO-METRIC, Inc's twin-engine Cessna 320 (N3443Q) aircraft. Classified data sets such as this one may have varying posting due to some LIDAR pulses not reaching the ground.
Accuracy statements are based on areas of moderate terrain. Diminished accuracies are to be expected in ... areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, however, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the bare-earth in these areas.
The data sets contain the points that were classified as "bare-earth". This means that the data represents the last surface the beam encountered, where that surface is assumed to be ground. As such, these data should represent the actual surface of the earth. Data anomalies such as pulses that encountered birds or interacted with atmospheric features have been re-classified to non-deliverable classes.
Purpose: The purpose of this data set is to provide a source for current and accurate digital elevation models (DEM) with vertical accuracy of 0.15 cm or better and with a nominal point spacing of .96 cm. A DEM is used as a fundamental layer of information in Geographic Information Systems (GIS). A number of the priority layers of spatial information recognized by the National Spatial Data Infrastructure may be derived from LIDAR DEMs, including elevation, hydrography, slope, aspect, and shoreline delineation. This data is not recommended for design grade mapping or engineering without a ground truth survey.
Start Date: 2004-08-17
Latitude Resolution: 0.25 degree
Longitude Resolution: 0.25 degree
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Vertical Resolution: Approx 80 km (total atmospheric column)
Vertical Resolution Range: > 1 km
Temporal Resolution: Daily
Use Constraints The images generated by Giovanni are not copyrighted; however, in the event that you publish the images or results using these images, we request that you include the following acknowledgment:
"The images used in this study were acquired using the GES-DISC Interactive Online Visualization and Analysis Infrastructure (Giovanni) as part of the NASA's Goddard Earth Sciences (GES) Data and Information Services Center (DISC)."
We would appreciate receiving a copy of your publication or reference mailed to email@example.com
Data Set Progress
Distribution Media: Online (HTTP)
Distribution Format: HDF-EOS, ASCII
Fees: No Fee
Role: TECHNICAL CONTACT
Phone: (907) 677-9635
Fax: (907) 274-3265
Email: aerometric at aerometric.com
2014 Merrill Field Drive
Province or State: Alaska
Postal Code: 99501-4116
Creation and Review Dates
DIF Creation Date: 2007-06-13
Last DIF Revision Date: 2011-12-19