ISMR QUERY TOOL: RETRIEVAL, VISUALIZATION AND ANALYSIS OF
IONOSPHERIC SCINTILLATION DATA
Bruno César Vani – [email protected]
Milton Hirokazu Shimabukuro – [email protected]
João Francisco Galera Monico – [email protected]
UNESP GEGE
CIGALA/CALIBRA Network• Stations equipped
with GNSS receivers PolaRxS-PRO, manufactured by Septentrio, capable of collecting data up to 100 hz. Such data may produce specific indices of ionosphere each minute.
• Five new stations will be installed for the CALIBRA Project.
ISMR Data
Amount of measurementsStations generates
IS monitoring records for each minute
•Scintillation indices•TEC indices•Multifrequency
Measurements are generated for
each GNSS satellite tracked by receivers
Near 10mirecords per day
Visualization
1440 epochs of measurements per day
Each measurement hasup to 60 parameters
ISMR Query Tool Open Source Packages:
2013 / January – v. 3.0
Usage of ISMR Query Tool
1. Check network data availability at the home page
2. Select a date/time interval
3. Select station(s), filters, fields, output options and plot
4. Output image will be processed and displayed
Example 1 Specific analysis for Station
SJCE
1. All satellites from station SJCE this year
2. Restrict the interval for the higest peak and plot it again
3. Identify the satellites
4. Compare with other station
Example 2 GPS - week of the solar flare
of March, 08th 2012
1. Query the week
2. Displaying only SJC stations
3.Station SJCI - S4 and sigma-phi
4. Station SJCI – identify the most affected satellites
5. Station SJCI – displaying just some few satellites
6. Station SJCI – identify the most affected time of the day
Other features
IPP Map (only version 2.0)
RINEX
Limitations
• Response time:– Varies according to the amount of data in the result
set– For example, a full year query can never be displayed– Use filters!
• Browser:– Firefox or Chrome are recommended browsers
Final remarks
• Capability of identifying high ionospheric scintillation periods in the region of the network
• Specific analysis which support:– development of mitigation techniques– building of prediction models – substantiation of new hypothesis about ionospheric
scintillation
• Researches can follow the state of the ionospheric indexes
Next Steps
• Positioning errors processing– 60 min. data PPP – 20 min. data PPP– ...
• Visual Analytics– Classification / Clustering– Quick search through metadata
Registration
• Send us an e-mail to [email protected] with name, institution and a short description about your interest on ISMR Query Tool and a user and password will be sent for you.
http://is-cigala-calibra.fct.unesp.br
Acknowledgements
• CAPES
• FAPESP
• Teams of CIGALA and CALIBRA
• Members of Spatial Geodesy Study Group (GEGE – http://gege.fct.unesp.br)