ISMR QUERY TOOL: RETRIEVAL, VISUALIZATION AND ANALYSIS OF

IONOSPHERIC SCINTILLATION DATA

Bruno César Vani – brunovani22@gmail.com

Milton Hirokazu Shimabukuro – miltonhs@fct.unesp.br

João Francisco Galera Monico – galera@fct.unesp.br

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 gege@fct.unesp.br 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)