Transcript ISMR query tool: retrieval, visualization and analysis

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 PolaRxSPRO, 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 measurements
Stations generates
IS monitoring records
for each minute
Each measurement has
up to 60 parameters
1440 epochs of
measurements per day
•Scintillation indices
•TEC indices
•Multifrequency
Measurements are
generated for
each GNSS satellite
tracked by receivers
Visualization
Near 10mi
records per day
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)