NDLI: Investigation of antenna pattern constraints for passive geosynchronous microwave imaging radiometers

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Investigation of antenna pattern constraints for passive geosynchronous microwave imaging radiometers

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gasiewski, A. J. Skofronick, G. M.
Copyright Year	1992
Description	Progress by investigators at Georgia Tech in defining the requirements for large space antennas for passive microwave Earth imaging systems is reviewed. In order to determine antenna constraints (e.g., the aperture size, illumination taper, and gain uncertainty limits) necessary for the retrieval of geophysical parameters (e.g., rain rate) with adequate spatial resolution and accuracy, a numerical simulation of the passive microwave observation and retrieval process is being developed. Due to the small spatial scale of precipitation and the nonlinear relationships between precipitation parameters (e.g., rain rate, water density profile) and observed brightness temperatures, the retrieval of precipitation parameters are of primary interest in the simulation studies. Major components of the simulation are described as well as progress and plans for completion. The overall goal of providing quantitative assessments of the accuracy of candidate geosynchronous and low-Earth orbiting imaging systems will continue under a separate grant.
File Size	3533702
Page Count	76
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930005603
Archival Resource Key	ark:/13960/t4mm17p2w
Language	English
Publisher Date	1992-12-01
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Microwave Antennas Synchronous Satellites Imaging Techniques Microwave Radiometers Satellite Antennas Rain Simulation Antenna Design Microwave Imagery Nonlinearity Brightness Temperature Spatial Resolution Large Space Structures Radiometric Resolution Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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