ISMR QUERY TOOL: RETRIEVAL, VISUALIZATION AND ANALYSIS OF IONOSPHERIC SCINTILLATION DATA Bruno César Vani – Milton Hirokazu Shimabukuro – João Francisco Galera Monico – UNESPGEGE

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 measurements Stations generates IS monitoring records for each minute Scintillation indices TEC indices Multifrequency Measurements are generated for each GNSS satellite tracked by receivers Near 10mi records per day Visualization 1440 epochs of measurements per day Each measurement has up 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 to with name, institution and a short description about your interest on ISMR Query Tool and a user and password will be sent for you.

Acknowledgements CAPES FAPESP Teams of CIGALA and CALIBRA Members of Spatial Geodesy Study Group (GEGE –