HR: 11:50h
AN: SM42A-07    [Abstracts]
TI: Stand-alone WIreless Magnetometer System: Concept Design and Development Status
AU: * Anderson, B J
EM: brian.anderson@jhuapl.edu
AF: JHU/APL, MS MP3-E128 11100 Johns Hopkins Road, Laurel, MD 20723, United States
AU: Carkhuff, B G
EM: bliss.carkhuff@jhuapl.edu
AF: JHU/APL, MS MP3-E128 11100 Johns Hopkins Road, Laurel, MD 20723, United States
AU: Rhodes, E
EM: edgar.rhodes@jhuapl.edu
AF: JHU/APL, MS MP3-E128 11100 Johns Hopkins Road, Laurel, MD 20723, United States
AU: Korth, H
EM: haje.korth@jhuapl.edu
AF: JHU/APL, MS MP3-E128 11100 Johns Hopkins Road, Laurel, MD 20723, United States
AB: The Stand-alone WIreless Magnetometer System (SWIMS) is intended to serve as a technology suitable for large scale deployment for magnetometer networks in sub-auroral latitudes with minimal logistical support and maintenance. SWIMS is based on a new magnetometer developed and licensed by JHU/APL. A SWIMS installation will consist of up to three solar/battery powered Sensor Modules (SM) each equipped with a new Mirror Image Differential Induction Amplitude Magnetometer (MIDIAM). The SMs are linked via wireless, radio frequency (RF) connection to a Central Node (CN). The RF link allows wireless installation over distances up to 300 meters between SMs. The CN may communicate either via land lines or wireless links to a central data facility. Because each SM is wireless, SWIMS can use more than one SM at a single site to discriminate against local noise sources. The present project objective is to develop a prototype SWIMS system of three SMs communicating via local RF link to a CN. The MIDIAM has yielded sub-nT performance with less than 1W power consumption in continuous operation. A conceptual system design using commercial solar/batter power system and RF communication components has been developed that is expected to achieve continuous operation at 1- second or higher rate sampling using a moderately sized solar cell array, 12" x 18", and a 6"x6"x4" AGM battery (144 W-hour). By monitoring the battery depth of discharge and duty cycling MIDIAM as required if incident effective power is low due to inclement conditions, the SM is expected to support continuous unattended operation with no coarser than one sample per minute on as little as four hours of sunlight every ten days.
DE: 2431 Ionosphere/magnetosphere interactions (2736)
DE: 2704 Auroral phenomena (2407)
DE: 2794 Instruments and techniques
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting