Research Projects - BITS Pilani

Sarang Chandrashekhar Dhongdi

Assistant Professor, Gr-I

Flying Ad-hoc Networks, Underwater Acoustic Sensor Networks

Dept of EEE, BITS Pilani K K Birla Goa Campus, Goa, India

sarang@goa.bits-pilani.ac.in

0832-2580348

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Project title – Autonomous measurement and tracking of deep-sea plumes using swarm of heterogeneous underwater vehicles
Trust Area – Underwater Robotics
Funding Agency – Ministry of Earth Sciences, Deep Ocean Mission
Duration – 2 years (April 2024 onwards)
Grant amount – INR 87,43, 520/-

This collaborative research project between BITS Goa (Dr. Sarang C. Dhongdi), CSIR-NIO Goa (Pramod Kumar Maurya) and NIT Calicut (Dr. Rakesh R. Warier) aims to explore deep sea plumes with Autonomous Underwater Vehicles (AUVs). The project focuses on various aspects such as underwater communication and networking techniques, co- operative control of multi-vehicular fleet, and effective navigation and localization techniques for the exploration of deep-sea underwater plumes.

Equipment - Evologics DMACE S2C Acoustic Network Emulator Box

Project title – Networked Marine robotic system for ocean exploration
Trust Area – Underwater Robotics and Networks
Funding Agency – SPARC
Duration – 2 years (April 2024 onwards)
Grant amount – INR 84,42,000/-

Collaborative networks of marine robots are steadily achieving ocean monitoring that is robust, adaptable, and high-performing. Seamless collaboration of marine robotic systems necessitates ongoing advancements in multiple interdisciplinary fields such as cooperative control and navigation, underwater networking, and estimation techniques. An integral enabling technology for the success of these networked marine robotic systems is the Internet of Underwater Things (IoUT). IoUT is defined as the network of smart interconnected underwater objects such as AUVs, ROVs, ASVs, buoys, and ships etc. These objects collect and transmit information through underwater communication channels, offering real-time data on ocean parameters.

The project team involves BITS Goa (Dr. Sarang Dhongdi, Dr. Narayan Manjarekar), NIT Calicut (Dr. Rakesh Warier), ISR/IST University of Lisbon, Portugal (Prof. Antonio Pascoal), and University of Toulon, France (Prof. Ricard Marxer).

Project Title - Development of Underwater Acoustic Sensor Network for Monitoring of Coral Reef (BBF/BITS(G)/FY2022-23/BCPS-113)
Principle Investigator- Sarang Chandrashekhar Dhongdi
Co-PI – Prof. K R Anupama, Dept of EEE, BITS Goa
Thrust Area –Underwater Sensor Networks
Funding Agency – DST NM-ICPS
Duration - 01/09/2022 to 30/06/2025
Grant Amount - 34.86 Lakhs

Coral reefs are a very important environment that maintain a great variety of life forms and are indicators of ocean health. Currently coral reefs are monitored using divers and researchers have been collecting data periodically on environmental conditions. The current system does not provide real-time data through all seasons. In addition, it is invasive in nature. The main objective of the proposal is to develop an underwater acoustic sensor network which can be deployed for monitoring the regional coral reef non-intrusively and through all seasons. For deployment of this network, series of underwater nodes would be developed with the capability of sensing, communication, data processing and networking. Using these nodes an ad hoc self-configuring underwater acoustic sensor network will be built to monitor various parameters ocean environment using oceanographic sensors.

Project Title - Flying Ad hoc Network for disaster rescue operations (SERB SRG/2019/001204)
Thrust Area – Wireless Sensor Networks, Airborne Networks
Funding Agency – Science and Engineering Research Board (SERB)
Duration – 2 years (Dec 2019 – Dec 2021)
Grant amount – 21.56 Lakhs

During the disaster rescue operations, such as fires in building spaces or natural calamities such as floods and earthquakes, mini-UAV’s can be deployed which can fly at much lower altitudes. At times, multiple mini-UAVs are required in the network formation for improving capabilities, reducing completion time of mission, and for allowing sharing of tasks among themselves. In this project, an autonomous network of multiple mini-UAVs will be deployed for an example of disaster rescue operations.

In this project, we developed a Flying Ad-hoc Network Simulator (FANS) platform. This co-simulator platform interlinks Network Simulator (ns-3) and robot simulator (Gazebo) with help of Robot Operating System (ROS).

More about it here -https://github.com/Sarang-BITS/FANS

: FANET applications

: FANS simulator

Project title – Design and Development of Underwater Acoustic Modem
Trust Area – Underwater communication
Funding Agency – BITS Pilani
Duration – 2 years (Nov 2018 – Oct 2020)
Grant amount – 8.88 Lakhs

In this project, an underwater acoustic modem will be developed for the shallow water UASN deployment. With two such modems, communication link will be tested between them by using a lab-based testbed set-up. Various modulation schemes, coding techniques and signal processing techniques can be tested using these modems.

: Water tank

: Hydrophone and Transducers

Project Title - Development of IoT system for monitoring gases
Principle Investigator- Sarang Chandrashekhar Dhongdi
Thrust Area –IoT
Funding Agency – BITS Pilani (Research Initiation Grant)
Duration – April 2018 to April 2019
Grant Amount – 2.0 Lakhs

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