Ph semat overview
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Transcript of Ph semat overview
ACEDP – River Health & E-flows
Brisbane, December 2009
! " Separating background variation from real change
! " Reducing the need for extrapolation & interpolation
! " Capture events – continuous data collection ! " Need to cross ecological scales in data collection
(Satellite to ground to satellite)
! "Need to dialogue with data collection system – react
remotely.
! "Build overall confidence in the models & decisions made based on the data.
! " A wireless sensor network “system” ! "“Smart”
! "Distributed
! "Low cost
! "Robust
! "Adaptable
! "Scalable
! "Eco-friendly energy
! " New platform for environmental
monitoring & Management support
! " Taking multidisciplinary approach to produce a new
generation of integrated technologies –
not a one-man project
seamless from data collection to application
! " Phased R&D Evolution rather than blue-sky invention
Proof of concept to viable product
! " Applicable beyond the environments being used for
development
Moreton Bay
Heron Island Lagoon
Pros: ! " Cheap
! " Insensitive to acoustic noise
! " Low sensitivity to natural obsatcles
Cons: ! " High attenuation at high
frequency
! " Carrier freq must be ELF/VLF: consequent low bandwidth/comm speed
!" Results of transmission trial in sea (Amity Point, Stradbroke Is., Dec. 2007, fc=1kHz, P=100 mW)
Umberto M. Cella, Ph.D. Candidate confirmation seminar, 8 May 2008
!" Monitoring & assessment
!" Data for prediction & trend analyses !" Crisis management & response
!" Community communication !" Planning
!" Compliance
!"3G network – provides essential capability
!"“Network in a Case”
!"Adaptable communications methods !" UHF, VHF
!" Satellite
!" CDMA
!" 3G