Abstract/Details

A methodology for the design of spaceborne pencil -beam scatterometer systems


2001 2001

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Abstract (summary)

Spaceborne scatterometer instruments are important tools for the remote sensing of the Earth's environment. In addition to the primary goal of measuring ocean winds, data from scatterometers have proven useful in the study of a variety of land and cryosphere processes as well. Several satellites carrying scatterometers have flown in the last two decades. These previous systems have been “fan-beam” scatterometers, where multiple antennas placed in fixed positions are used. The fan-beam scatterometer approach, however, has disadvantages which limit its utility for future missions. An alternate approach, the conically-scanning “pencil-beam” scatterometer technique, alleviates many of the problems encountered with earlier systems and provides additional measurement capability. Due to these advantages, the pencil-beam approach has been selected by NASA as the basis for future scatterometer missions. Whereas the fan-beam approach is mature and well understood, there is a need for a fundamental study of the unique aspects of the pencil-beam technique.

In this dissertation, a comprehensive treatment of the design issues associated with pencil-beam scatterometers is presented. A new methodology is established for evaluating and optimizing the performance of conically-scanning radar systems. Employing this methodology, key results are developed and used in the design of the Sea Winds instrument—NASA's first pencil-beam scatterometer. Further, the theoretical framework presented in this study is used to propose new scatterometer techniques which will significantly improve the spatial resolution and measurement accuracy of future instruments.

Indexing (details)


Subject
Electrical engineering;
Remote sensing
Classification
0544: Electrical engineering
0799: Remote sensing
Identifier / keyword
Applied sciences; Pencil-beam scatterometer; Scatterometer; Spaceborne
Title
A methodology for the design of spaceborne pencil -beam scatterometer systems
Author
Spencer, Michael W.
Number of pages
229
Publication year
2001
Degree date
2001
School code
0022
Source
DAI-B 62/11, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780493446837, 0493446834
Advisor
Long, David G.
University/institution
Brigham Young University
University location
United States -- Utah
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3032047
ProQuest document ID
252119646
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/252119646
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