IEEE GRSS IITI webinar on ‘Remote Sensing of Ionospheric perturbations using GNSS”

Dear Students,

Reserve your dates for a keynote webinar on “Remote Sensing of Ionospheric Perturbations Induced by Earthquakes and Tsunamis Using GNSS” by Dr.Sithartha Muthu Vijayan, senior scientist,CSIR Fourth Paradigm Institute. This talk covers the fundamentals and current status of ionospheric seismology including ionosphere-based tsunami early warning, methods for detecting ionospheric perturbations using GNSS, emerging opportunities, and challenges ahead. 

Date/Time:16:00-17:00 IST – Apr 8,2022 (Friday)

Kindly Register here  to attend the session.

The lecture is jointly organized by IEEE Geoscience and Remote Sensing (GRSS) chapter IITI and IEEE Student branch,IIT Indore

The details of this Webinar are below :

Title: Remote Sensing of Ionospheric Perturbations Induced by Earthquakes and Tsunamis Using GNSS

Speaker: Dr.Sithartha Muthu Vijayan, senior scientist,CSIR Fourth Paradigm Institute.


It is well-known that acoustic and gravity waves generated by earthquakes and tsunamis grow in amplitude during their vertical propagation in the atmosphere and perturb the ionospheric plasma. However, there were limitations in observing such perturbations using conventional observational techniques. The advent of Global Navigation Satellite Systems (GNSS) changed the scenario. The number of dual-frequency GNSS receivers established – both in space and ground – for various scientific and navigational purposes, and the massive earthquakes and tsunamis that shook the Earth in the last two decades provided an unprecedented opportunity to detect and study the coseismic and tsunamigenic ionospheric perturbations. Eventually, these studies opened up a new area of research called ionospheric seismology. Being in its infancy, ionospheric seismology demands improvements in both theoretical as well as observational research to obtain maturity. Upon its maturity, ionospheric seismology will make the remote sensing of earthquakes and other planetary quakes possible in addition to filling the crucial gaps in conventional seismology. Further, this multidisciplinary research field is opening up many research opportunities in the domains of ionospheric physics, geodesy, and geophysics. This talk covers the fundamentals and current status of ionospheric seismology including ionosphere-based tsunami early warning, methods for detecting ionospheric perturbations using GNSS, emerging opportunities, and challenges ahead. 

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#4th webinar


Looking at the Sun in the Near-UV range with the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 mission


Dr.Avyarthana Ghosh (Postdoc, IUCAA Pune)



The Solar Ultraviolet Imaging Telescope (SUIT) on-board Aditya-L1 spacecraft (India’s first space mission dedicated solely to solar observations) is an indigenous effort to observe the Sun in Near-Ultraviolet range of the solar electromagnetic spectrum. It is unique in the way that it can image the Sun 24×7 from the Sun-Earth Lagrangian 1 point with a high spatial resolution, cadence and contrast, in addition to good straylight mitigation. There is a suite of 11 science filters, out of which 8 are with comparatively narrow Full-Width-Half-Maxima and remaining 3 are broadband. In total, these 11 science filters probe the dynamics and coupling of mass and energy in different layers of the lower solar atmosphere as well as its impact on space-terrestrial climate. In my talk, I shall be giving a brief overview of the science objectives, the photometric designing of SUIT along with its performance modelling and straylight estimates. Finally, I shall be talking about the operational planning and the current status of the instrument which is being tested at subsystems- level and assembled.


##3rd webinar


Fiber-optic Biosensors for Water Quality Assessment


Dr. Nirmal Punjabi

Project Research Scientist, NCETIS.
Indian Institute of Technology Bombay, India.


Testing of water is an integral component for maintaining water quality and providing drinking water to everyone. Due to the limited accessibility of sophisticated instruments
for organic and inorganic analysis, proper testing is not accessible for everyone. Fiber optic sensors, due to their versatility, are potential solutions for water quality assessment that can be deployed at the broadest scale, thereby making them accessible at remote locations. In this talk, I will be providing an overview of the research in the development of guided-wave absorbance-based fiber-optic sensors and their application for the detection of contaminants in drinking water.

Registration Link

Date and Time: Aug 7, 4-5 pm IST


##2nd webinar


Pulsars: Unique Windows into High-Energy Astrophysics


Dr. Samuel J. McSweeney

Associate Lecturer, Curtin University


When Neutron Stars were predicted in the 1930’s, it was impossible to anticipate just how incredibly useful they would be to push the frontiers of physics into regimes that are impossible to probe here on Earth. Since Pulsars were discovered in the late 1960’s, and positively identified as rapidly rotating Neutron Stars, they have been exploited to test a wide variety of physical theories, including ultra-strong gravity, ultra-dense matter physics, and ultra-high-energy plasma physics. In the first half of the talk, I will take you through the fascinating history of these exotic star systems, from their 1967 discovery by PhD student Jocelyn Bell Burnell; how they were used to verify Einstein’s Theory of General Relativity in the 1970’s and 80’s; to the modern-day, ongoing experiments to use them to detect background long-wavelength gravitational waves. In the second half of the talk, I will explain how my own research attempts to answer one of the most fundamental questions about Pulsars that, incredibly, doesn’t yet have a satisfactory answer: Just why are we able to “see” Pulsars in the first place?

Registration Link

Date and Time: Jul 31, 4-5 pm IST


Webinar on “Full-Duplex Wireless Communication “

Speaker: Dr.Abhijeet Bishnu

Abstract: Wireless Communication technologies like Full-duplex (FD) communication and non-orthogonal multiple access (NOMA) have recently   gained   much   attention   as   two   spectrally   efficient   techniques.   In   theory, FD communication can double the spectral efficiency than the conventional time-domain duplex and frequency-domain duplex based systems. In FD communication, the transmitter and the receiver communicate simultaneously in the same time and frequency band thereby being spectrally efficient. In NOMA, multiple users access the same channel and time-frequency slot simultaneously through different power allocation, hence increasing in spectral efficiency. Most of the literature on FD propose methods for self-interference cancellation at the receiver and demonstrate the same using software defined radio (SDR) and analog devices. In this presentation, an end-to-end FD-NOMA communication system is demonstrated using SDR. In this demonstration, the   base   station (BS) communicates in FD mode and the users communicate with the BS in half-duplex mode. The BS communicates with the two downlink users through power-domain NOMA.  Trade-off and level of self-interference from both analog and digital cancellation are highlighted. Impact of uplink user on the performance of the downlink users is also analysed. Research challenges for an end-to-end FD-NOMA system are also highlighted.

Bio: Dr. Abhijeet Bishnu received his Ph.D.  in Electrical Engineering from the Indian Institute of Technology Indore, India, in 2019. During his Ph.D., he was a visiting research scholar at The University of Edinburgh, UK in 2019. He is currently a postdoctoral research associate at The University of Edinburgh, UK. His research interests include channel estimation, cognitive radio, MIMO-OFDM system, and full-duplex communication. He is a reviewer for many IEEE and Springer journals.


Date: 17th July,2021

Time: 16:00-17:00 IST

Venue: Google meet

Registration Link:

Please contact for any registration issues.