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Synthetic Aperture Radar Imagery of Airports and Surrounding Areas: Denver Stapleton International AirportThis is the third in a series of three reports which address the statistical description of ground clutter at an airport and in the surrounding area. These data are being utilized in a program to detect microbursts. Synthetic aperture radar (SAR) data were collected at the Denver Stapleton Airport using a set of parameters which closely match those which are anticipated to be utilized by an aircraft on approach to an airport. These data and the results of the clutter study are described. Scenes of 13 x 10 km were imaged at 9.38 GHz and HH-, VV-, and HV-polarizations, and contain airport grounds and facilities (up to 14 percent), cultural areas (more than 50 percent), and rural areas (up to 6 percent). Incidence angles range from 40 to 84 deg. At the largest depression angles the distributed targets, such as forest, fields, water, and residential, rarely had mean scattering coefficients greater than -10 dB. From 30 to 80 percent of an image had scattering coefficients less than -20 dB. About 1 to 10 percent of the scattering coefficients exceeded 0 dB, and from 0 to 1 percent above 10 dB. In examining the average backscatter coefficients at large angles, the clutter types cluster according to the following groups: (1) terminals (-3 dB), (2) city and industrial (-7 dB), (3) warehouse (-10 dB), (4) urban and residential (-14 dB), and (5) grass (-24 dB).
Document ID
19900014941
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Onstott, Robert G.
(Environmental Research Inst. of Michigan Ann Arbor, MI, United States)
Gineris, Denise J.
(Environmental Research Inst. of Michigan Ann Arbor, MI, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1990
Subject Category
Air Transportation And Safety
Report/Patent Number
NASA-CR-4305
NAS 1.26:4305
DOT/FAA/DS-89/16
Accession Number
90N24257
Funding Number(s)
CONTRACT_GRANT: NAS1-18465
PROJECT: RTOP 505-67-41-57
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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