Applications are invited for the post of JRF in NPOL, DRDO Project at SASTRA | 10 July 2022

Project title Design and Development of Algorithms for the Formation of Large Scale High Resolution Images using SSS (Side Scan Sonar) for the Detection of MLOs (Mine Like Objects)
Funding Agency NPOL, DRDO, Kochi (under CARS scheme)
Duration 18 months
Designation Junior Research Fellow (JRF)
Fellowship amount Up to Rs. 31,000/- per month
No. of vacancies One
Essential Qualification M.E/ M.Tech- Computer Science Engineering / MCA /M.Sc (Computer Science / Mathematics) selected through NET/GATE/National level exams conducted by Central Government Departments and Institutions with Knowledge in Image Processing
Desirable Good working knowledge and hands on experience on MATLAB in Linux environment / PYTHON / .NET / Java
Age Limit 28 years (Upper age limit can be relaxed up to 5 years for SC/ST/OBC and Women candidates)
Project Description Increased human interaction and exploitation of marine ecosystem for tactical and defense purposes resulted in the deployment of sea mines and other ordnances in the sea bed at various strategic positions posing a severe threat and hazard to navigation, high valued assets, and personnel.  Initiation of countermeasure operations to overcome these challenges resulted in the unprecedented need for precise seafloor mapping. Remote sensing of sea bed using Side Scan Sonar (SSS) mounted on platforms like ROVs (Remotely Operated Vehicles), AUVs (Autonomous Unmanned Vehicles), and tow fish for generating large scale high-resolution mapping of seafloor helps in detection and further classification of these hazardous ordnances. SSS is a category of sonar system that is used to create an image of large areas of the seafloor efficiently. It is used for high-resolution imaging of the sea bottom. The military applications of SSS include bottom mine detection and tactical bathymetric survey. Side-scan uses a sonar device that emits conical or fan-shaped pulses down toward the seafloor across a wide-angle perpendicular to the path of the sensor through the water, which may be towed from a surface vessel or submarine, or mounted on the ship's hull.  The intensity of the acoustic reflections from the seafloor of this fan-shaped beam is recorded in a series of cross-track slices. When stitched together along the direction of motion, these slices form an image of the sea bottom within the beam's swath (coverage width). The sound frequencies used in the side-scan sonar range from 100 to 500 kHz; higher frequencies yield better resolution but less range.


The candidate is expected to register for Ph.D. as a full time candidate for this project work. Interested candidates are requested to send their resume on or before 10th July 2022 to Dr. S. Gopalakrishnan, Principal Investigator Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. Shortlisted candidates will have to appear for an online or face-to-face interview. The date of the interview will be notified by email only to the shortlisted candidates. No TA/DA will be paid for appearing in the interview.