Abstract/Details

Minimal infrastructure short range radar networks


2008 2008

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Abstract (summary)

Distributed networks of short-range radars offer the potential to observe winds and rainfall at high spatial resolution in volumes of the troposphere that are unobserved by today's long-range weather radars. One class of potential radar network designs includes Off-the-Grid (OTG) weather radar networks. These are envisioned as self-contained networks of small remote-sensing, communication, and computation nodes, each occupying a volume of 1 m 3 and capable of operating independent of the wired power and communication infrastructure. Independence of the wired infrastructure would allow OTG networks to be deployed in specific regions where sensing needs are greatest, such as mountain valleys prone to flash-flooding, geographic regions where the infrastructure is not available or susceptible to failure, certain high-population areas, and underdeveloped regions lacking built-up infrastructure.

OTG radar nodes would communicate wirelessly with one-another by operating as ad-hoc networks, and they would distribute computational functions among various points capable of computation throughout the network. The individual nodes derive energy from solar panels or other self-contained means and therefore OTG networks operate under a constraint of limited energy consumption. These systems would be required to exhibit the property of energy balance, meaning that they dynamically balance the allocation of energy consumed by different functions with the generation of power from the environment. This would be done through dynamic control decisions in order to operate over extended periods of time during severe and changing weather. Sensing, communicating, and computing tasks may be redistributed throughout the network as the storm cells migrate over the coverage area, in such a way that it maximizes the ratio of useful information collected to power consumed.

This dissertation focuses on power management and energy harvesting of OTG radar networks. A prototype OTG radar node was developed to obtain practical measurements of energy consumption. Experiences and data gained from the operation of the prototype nodes are used to develop a model of the OTG node for simulation. An OTG radar network simulator was developed experiment with potential OTG networks. These simulations are used to investigate the impact of geographic location, battery capacity, optimization of power consumption, and node density on the performance and operational lifetime of such a sensor network. Additionally we present the results from initial exploration of dynamic control in OTG networks.

Indexing (details)


Subject
Electrical engineering;
Computer science
Classification
0544: Electrical engineering
0984: Computer science
Identifier / keyword
Applied sciences; DCAS; Infrastructure; Radar networks; Sensor networks
Title
Minimal infrastructure short range radar networks
Author
Donovan, Brian C.
Number of pages
147
Publication year
2008
Degree date
2008
School code
0118
Source
DAI-B 69/09, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549786160
Advisor
McLaughlin, David J.
Committee member
Frasier, Stephen; Kurose, James F.; Zink, Michael
University/institution
University of Massachusetts Amherst
Department
Electrical & Computer Engineering
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3325133
ProQuest document ID
304566284
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304566284
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