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Present Status of the LISN Magnetometer Operation and new Developments by Oscar A. Veliz, Ricardo Rojas , Jorge L. Chau Instituto Geofisico del Peru Radio Observatorio de Jicamarca. Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011. - PowerPoint PPT Presentation
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Present Status of the LISN Magnetometer Operation
and new Developmentsby
Oscar A. Veliz, Ricardo Rojas, Jorge L. Chau
Instituto Geofisico del Peru
Radio Observatorio de Jicamarca
Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011
Outline • Network Deployement and Installation
• LISN Magnetometers description
• Magnetometer Operational Status
• Preliminary Results
• New developments and Conclusions
LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS
NETWORK
Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011
Outline • We describe here the present status of the LISN magnetometer network operation and data collection.
• Five triaxial magnetometers were deployed and installed since 2007 at Leticia-Colombia (2009), Puerto Madonado-Peru(2007), El Leoncito-Argentina (2008), Cuiba-Brasil (2010), Alta Floresta-Brasil (2010)
• New magnetometers developments and improvements plans for upgrading the existing IGP and LISN magnetometers
LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS NETWORK
LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS NETWORK
El Leoncito(-31.00 -69.29)
Pto. Maldonado(-12.58 -69.18)
Jicamarca(-11.95 -76.87)
Piura(-5.17 -80.64)
Leticia(-4.19 -69.94)
Alta Floresta(-9.87 -56.10)
Cuiba-15.56 -56.07)
HyoHyo
LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS NETWORK
OPERATING STATUS (As of August 2011)
Station Variation
Instrument
Time Res.
Starting Date Operating Status
Leticia (LET) Colombia
(-4.19 -69.94)
HDZ LISN Magnetometer
1 Sec. April 2009 Operating at present
Puerto Maldonado
(PMO) - Peru
(-12.58 -69.18)
HDZ LISN Magnetometer
1 Sec. March 2008 Operating at present
El Leoncito (LEO)
Argentina
(-31.00 -69.29)
HDZ LISN Magnetometer
1 Sec. September 2008 Operating at present
Alta Floresta
(ALF) - Brasil
(-9.87 -56.10)
HDZ LISN Magnetometer
1 Sec. November 2010 Operating at present
Cuiba (CBA)
Brasil
(-15.56 -56.07)
HDZ LISN Magnetometer
1 Sec. November 20101 Operating at present
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
Leticia - ColombiaUniversidad Nacional de Colombia
Sede Amazonica LeticiaLatitude : 4° 11' 8.9" S
Longitude : 69° 56' 12.6" WElevation : 110m
Installation date : March 2009
(-4.19 -69.94)
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
Puerto Maldonado -PeruIGP-Marina de Guerra del Peru
Latitude : 12° 34' 8.9" SLongitude : 69° 10' 12.6" W
Elevation: 100mInstallation date : March 2008
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
El Leoncito - ArgentinaIGP-CASLEO-Universidad de la Plata
Latitude : 31° 00' 8.9" SLongitude : 69° 17' 12.6" W
Elevation: 2400mInstallation date : September 2008
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
Alta Floresta - BrasilInstituto de Pesquisas Espaciales
Latitude : 9° 52' 0.9" SLongitude : 56° 06' 0.6" W
Elevation: 100mInstallation date : October 2010
Starting date : April 2011
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
Cuiba – BrasilInstituto de Pesquisas Espaciales
Latitude : 15° 33' 04.9" SLongitude : 56° 04' 12" W
Elevation: 100mInstallation date : October 2010
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
Jicamarca - PeruInstituto Geofisico del Peru
Latitude : 11° 56' 04.9" SLongitude : 76° 52' 12" W
Elevation: 1100mReinstallation date : October 2010
Main Features• Three-axis fluxgate variometer system
• Total measurement range +/- 60000 nT
• Three selectable dinamic range
+/- 500/2000/5000 nT for +/- 2.5V
• One second recording interval
• 20 bits data logger built in, USB output
• Resolution 0.1 nT
• Low power and robustness
• Supply voltages 110/220 VAC, 12VDC
LISN Magnetometer System
LISN Magnetometer System
Amp, Gain and signal conditioning
(Analogic)
Analog Output(+/- 10V, 5 channels)
ADC-20 Pico tech.High resolution
Data loggerPC
Windows BasedInternet
Time SynchroUSNOGPS Receiver
Not Implemented yet
LISN Web Server
Remote Users1 minute Reported data
Web monitoring
Magnetometer Control Unit
USB
XZ
Internet
Sensor Unit
(buried)
FTP
Mag-03MCES70 Bartington
Y
Block Diagram (First Version)
LISN Magnetometer Program
Setuplog.cfg
Lisnplot.cfg
Lisn_logon.txt
Configuration Input files Magnetometer Output files
One secondData file(Raw)
One minuteData file(ASCII)
CompressedData file
Log file(ASCII)
MagnetometerData Loggerprogram
LISN Magnetometer Data
• 1 Second Data File ( 8 characters and 3 characters extension)Hourly ZIP Data file (Size 40KB)Name : jic15812.10sWhere : JIC = Station Code (3 digits)
158 = Day of year (1-365) 12 = Hour (00-23)10s = Extension, Year(10), type(s)
• 1 Minute Data File (8 characters and 3 characters extension)Daily ASCII column formatted (Size 110KB)Name : jic15jun.10mWhere : JIC = Station Code (3 digits)
15 = DayJUN = Month10m = Extension, Year(10), type(m)
FT
P
Magnetometer Data Flow
USB InterfaceComputer
Computer
Sensor &
SCU&
DAS
Local DB
MAIN LISN SERVER
Magnetometer System
LISN DB
FTP
FTP data transfer•One Second ZIP file each hr.•One Minute file each (1-5 Min).•One Day Minute file each day (00hr)
Data Acquisition Program
Data Collection (Sep. 9-10, 2011
Data Collection (Sep. 9-10, 2011
Data Collection (Sep. 9-10, 2011
•The experimental considerations of the current magnetometers in operation have led us to develop and construct a new high performance fluxgate magnetometer at Jicamarca.
• Internal GPS has been incorporated for precisely and timing software controlled of the overall magnetometer operation.
• We describe also a development plan for a new data acquisition system based on embebed and stand alone system which is being carried out at IGP.
Hardware Development
LISN Magnetometer System
LISN Magnetometer System
Block Diagram (Second Version)
XY
Z
IntegratedElectronicsT. Sensor
FilteringIsolation &
buffer
DC signal conditioningOffset and gain control
High resolution Data logger
ADC-20 Pico tech
AC/DCPower supply
GPS ReceiverGarmin GPS 15xLF
30 m
(+/- 10V, 5 channels)
USB
RS232
Internet
Aplicaction TFP
LISN Database Users
Sensor Unit Control Unit
Magnetometer
Software
LISN Local HDD
LOW LATITUDE IONOSPHERIC SENSOR NETWORK
LISN Magnetometer System
Sistema de sensado y acondicionado de señal
(electrónicaanalógica)
Analog Output(+/- 10V, 5 channels)
MicroDAQ-LiteAdquisition board
(Data loggers)
GESBC-9260
Embebed system
(Aplicación paragestión y
tranferencia de datos )
SO -> LINUX embebido
GPS ReceiverGarmin GPS 15 LF
LISN Web Server
Remote UsersWeb monitoring
1 Minute Reported data
Magnetómeter Control Unit
USB
RS232
XZ
Internet
Sensor Unit
Bartington Mag-03MCES70
Conclusions and Recommendations
• Five magnetometres are operating in near real time.
• There are some data gaps in the reported data due to logistical problems such as Internet and lost of data due to stations AC power outages or PC fails.
• It is recommended to have a periodical stations maintenance and calibrations at least once a year
• Upgrade the existing LISN magnetometers network with the new developed magnetometers
• Improve the logisic and communications beetwen operators
Conclusions and Recommendations
MANY THANKS
The JRO LISN Team
Second LISN Workshop, San Jose Dos Campos, Nov 07-10, 2011
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