IndiaPosted at: Jul 3 2025 11:23AM


India-Australia join hands to enhance undersea surveillance

New Delhi, July 3 (UNI) In a significant step towards bolstering defence capabilities, India and Australia have joined hands on a pioneering science and technology project to enhance undersea surveillance technologies.
The joint research initiative, led by the Defence Research and Development Organisation's (DRDO) Naval Physical and Oceanographic Laboratory and Australia's Defence Science and Technology Group (DSTG), aims to improve the early detection and tracking of submarines and autonomous underwater vehicles, Australian Defence Ministry said in a statement.
This project is the latest milestone in increasing maritime domain awareness cooperation between Australia and India.
In a statement issued by the Australian government Department of Defence said, "The agreement outlines a three-year joint research project between the Defence Science and Technology Group’s (DSTG) Information Sciences Division, and its Indian counterpart agency, the Defence Research and Development Organisation’s (DRDO) Naval Physical and Oceanographic Laboratory".
"The leading-edge research will explore using Towed Array Target Motion Analysis to improve the reliability, efficiency and interoperability of current surveillance capabilities," it said.
Discipline Leader in DSTG’s Information Sciences Division, Amanda Bessell, said Target Motion Analysis was a collective term for target tracking algorithms, developed to estimate the state of a moving target.
“Target Motion Analysis is the crucial element in maintaining platform situational awareness, when a passive mode of operation is required,” Bessell said.
This research project is unique in the way it utilises a towed array-based signal processing system.
DSTG Senior Researcher, Sanjeev Arulampalam, explained a towed array consisted of a long linear array of hydrophones, towed behind a submarine or surface ship on a flexible cable.
"We need to harness the best minds in innovation, science and technology to build new capabilities, to innovate at greater pace, and to strengthen our strategic partnerships," the statement added.
“The hydrophones work together to listen to the undersea environment from various directions,” Dr Arulampalam said.
“The sound signal is passed through a signal processor, which analyses, filters and detects underwater acoustic signals emitted from maritime targets.”
The joint project will put novel algorithms to the test, using the strengths and shared knowledge of the two countries.
“The project arrangement will involve the sharing of ideas, investigation trials, algorithm demonstrations and performance analysis,” Dr Arulampalam said.
With the scope of the underwater battlespace changing, including the increased use of autonomous vehicles, improving surveillance capabilities is a priority.
“The output of this research program has the potential to guide the development of future algorithmic directions for our undersea combat system surveillance technologies,” Chief Information Sciences Division, Suneel Randhawa, said.
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