International Committee on
GNSS: Space Weather

Space weather monitoring using lowcost receiver system❑ Exploring low-cost GNSS receivers thatsatisfies space weather needs both interms of scintillation and total electron
contente.g., U-Blox F9PGNSSFrequency Bands➢

any receiver that is capable tooutput raw data

Raw Data➢

dual frequency receiverNavigation Frame Data➢

cost (less than $1000, including
antenna and data logging system)❑ N.B.: No preferences of whatsoever on

any brand/name. The examples are
based on the selection criteria.

Output Ratee.g. Septentrio MOSAICGPS, GLONASS, Galileo, BeiDou, QZSS, SBAS
L1, L2, E5b

L1, L2, L5
Code Phase, Carrier Phase, Doppler,Signal quality related data
Yes, including data bits

Max 20Hz

Up to 100 Hz for
Measurement
50Hz for RTK

RTK / PPP CapableYes

TEC ComputationYes

S4 Computation(is being currently studied)

Price ($)

300700Space weather monitoring using lowcost receiver system❑ Exploring software that could be used to process data from low-cost GNSS receivers in order to compute

TEC, scintillation and other space weather related parameters➢FLEURY (Matlab source files to compute TEC parameter provided by R. Fleury, France): Tested withsample observation data files. STEC, VTEC and ROTI from GPS observation data in RINEX file format
were computed➢

NeQuick (free download https://www.itu.int/rec/R-REC-P.531-14-201908-I/en)❑ United Nations Workshop on ISWI, June 2023, Vienna➢ (ICTP) Performance in estimating TEC is comparable to those of geodetic/scientific grade receivers
and can therefore be used to monitor the ionosphere➢ (The University of Tokyo) Data formats and processing algorithms shall be standardized for uniformresults➢ (Boston College) Space weather monitoring implies TEC and scintillation (both phase and intensity),
and the preliminary results are promising. Full analysis of performance including tracking and othercharacteristics are in progress
https://www.unoosa.org/oosa/en/ourwork/psa/schedule/2023/2023-iswi-workshop_presentations.html

Space weather monitoring using lowcost receiver system❑ Design a prototype low-cost GNSS receiver for space weather related applications➢ Design low-cost GNSS receiver system for unattended data logging❑ Explore different types of configurations❑ Requirements➢ The system shall be able to Log raw data when power is connected➢ Recover all setups including network information when the receiver is rest or power
supply is turned off and on➢ Connect remote server automatically➢ Log raw data locally in a SD card

ICG Programme on GNSS applications❑ Working Group on Capacity Building and Information Dissemination: Action C4

Build upon the success of ISWI and support the establishment of ground-based world-wide instrument
arrays for exploring atmospheric phenomena related to SW and climate change. ISWI is to address all
aspects of the response of the mid- and low-latitude ionosphere to magnetic storms and SW effects ofsuch storms, including in-situ & ground-based observations as well as modeling & theoretical studies.
❑ International Space Weather Initiative (ISWI)ISWI has proved to provide a framework for collaboration among teams of scientists, serving as an
example of international work in instrument operation, data collection and analysis and the publicationof scientific results.
❑ Cooperation ICG, ICTP and Boston College

Provide training courses: focusing on the use of SW instruments for scientific research and for SW effects

International Space Weather Initiative❑ Science: deploying space weather instruments, obtaining

data, data analysis, and publishing results.
❑ Capacity building: training PhD students and young
scientists to work on space weather data via workshops
and advanced schools. ISWI runs monthly webinars given
by international experts in space weather.
❑ Outreach: teaching teachers to takespace weather
material to school students; ISWI scientists giving public
lectures in the vicinity of capacity building venues.

http://www.iswi-secretariat.org/

ISWI Instruments❑ ISWI helps deploying low-cost instrument networks in developing countries.

These include networks of magnetometers, GNSS receiver, ionosphericinstruments, atmospheric sensors, radio telescopes, and energetic particle
detectors.

❑ Instrument leads from developing countries work with students and scientistsof developing countries to establish long-lasting collaborations to advancespace weather.

❑ ISWI has established open data policy and rules of the road in utilizing thedata from ISWI instruments. ISWI data are combined with data from space
missions to study space weather events.

Space Weather Effects on Society – The Big 3 !

Slide 8

Thank you