“Blue Economy Surveying”
* Exploration of sea-bed , minerals and the cluster of fishes underwater
(Details of the project will be updated when the project is completed)
“Detection and localization of unwanted underwater objects ” using implanted chip on marine animals
(Check chip details : https://www.star-oddi.com/)
Details of the project will be updated when the project is completed)
“Non-invasive measurement of sea ice thickness” using low-frequency EM waves.
* White Paper submitted to ONR (Office of Naval Research, Global)
Measurement of sea ice properties is important for safety of navigation and for monitoring the environment, particularly the climate. Measuring ice properties can also be exploited in the best possible way to extract geophysical information. Therefore many properties of sea ice, specially sea ice thickness has been of interest for centuries . We are currently employing low-frequency EM wavesto measure the thickness of sea ice and later characterization of sea-ice. Since some electrical properties of floating ice is different from that of water beneath, the response will vary and based on this we are to extract usable information.
Development of “Underwater surveillance System” using low-frequency EM waves.
Underwater surveillance has attracted more and more attention because of its essential role in military and civilian/scientific applications. The detection, localization and classification of hidden objects (mines, submarines, underwater wrecks, sunken ships, unmanned underwater vehicles (UUV) etc.) have predominantly been performed by sonar methods which often yield unsatisfactory results and that is why the use of electromagnetic (EM) waves is on the rise. As part of the project we have developed an efficient method to detect, localize and classify underwater ferromagnetic objects in an ocean environment using low frequency EM waves propagating in layered media. From this project, we have submitted two conference papers which have been accepted in two conferences – EEE’17, Rome, Italy and TENCON,2017, Penang, Malaysia.
” Possibility of EM wave for Underwater Vehicle Communication ” using low-frequency EM waves.
As noise levels are high due to multi-path propagation, reverberation, complex flow pattern of water etc., in shallow waters and coastal regions and the performances of acoustic systems are not always reliable, possibilities of using electromagnetic (EM) fields for underwater vehicle communication was investigated in this project. Electric conductivity, causing frequency dependent attenuation, limits communication distance and data transfer rate in sea environment. An enhancement in range and bandwidth was proposed to be achieved by: 1) allowing EM signals to cross seawater-to-air boundary and achieve long-range horizontal communication using air path, followed by air to water signal transmission, if needed, and 2) exploring guided waves phenomenon at the water side of the seawater-air interface. A detail computational investigation was made and a paper was published of this project on IEEE conference “ECCE,2017 “ .