Breakthrough achievement by Indian researchers , develop new tech to make military equipment invisible to radar

Source – The Economic times

In a significant achievement, Indian reserchers have able o develop a material that can make stealth vehicles and covert establishments less visible to the radar. Radars are used in defence and civil sectors for surveillance, and navigation, to detect and track aircraft, ships, ground vehicles, and movements within covert establishments
The material can absorb a wide range of radar frequencies (signals), irrespective of the direction from which the radar signal hits the target, said the team of researchers at the Indian Institute of Technology (IIT), Mandi, which has developed the technology. According to it, it can also be used to cover windows or glass panels of stealth vehicles and covert establishments that must be invisible to radar.
The research has been published in the journal “IEEE Letters on Electromagnetic Compatibility Practice and Applications”.
Being invisible to radar is a crucial defence strategy and the ability to evade radar detection can reduce the chances of being targeted by enemy weapons,” explained Shrikanth Reddy, Assistant Professor, School of Computing and Electrical Engineering, IIT Mandi
Any technique that makes things invisible to radar can also be used in the commercial sector to reduce radiation leakages from buildings and make them more secure. For example, invisibility to radar can also be used in private or covert establishments for the protection of information and privacy,” he said.
Radar Cross Section (RCS) reduction is a way to make something less visible to radar. RCS reduction is achieved by using materials that can absorb radar signals, or by shaping the object in a way that makes it difficult for radar to detect.
Unlock detailed analysis of business news only on our App
10M Downloads

Get App
ETLogin button

TOP SEARCHESHIMACHAL PRADESH ELECTIONGUJARAT ELECTION 2022RAJNATH SINGHAJIT DOVALCRPFNATOASSAM CHIEF MINISTERYOON SUK YEOL
DEFENCE
READ ON APP
Indian researchers develop new tech to make military equipment invisible to radar

BCCL
Representative Image
Synopsis
The material can absorb a wide range of radar frequencies (signals), irrespective of the direction from which the radar signal hits the target. It can also be used to cover windows or glass panels of stealth vehicles and covert establishments that must be invisible to radar.
By PTILast Updated: Feb 06, 2023, 06:48 PM IST5
In a significant achievement, Indian reserchers have able o develop a material that can make stealth vehicles and covert establishments less visible to the radar. Radars are used in defence and civil sectors for surveillance, and navigation, to detect and track aircraft, ships, ground vehicles, and movements within covert establishments.

ADVERTISEMENT

The material can absorb a wide range of radar frequencies (signals), irrespective of the direction from which the radar signal hits the target, said the team of researchers at the Indian Institute of Technology (IIT), Mandi, which has developed the technology. According to it, it can also be used to cover windows or glass panels of stealth vehicles and covert establishments that must be invisible to radar.

The research has been published in the journal “IEEE Letters on Electromagnetic Compatibility Practice and Applications”.
ADVERTISEMENT

“Being invisible to radar is a crucial defence strategy and the ability to evade radar detection can reduce the chances of being targeted by enemy weapons,” explained Shrikanth Reddy, Assistant Professor, School of Computing and Electrical Engineering, IIT Mandi.
ETPrimeET PRIME – TOP TRENDING STORIES
Weekly Top Picks: 5 stocks with consistent score improvement and upside potential of up to 49%Weekly Top Picks: 5 stocks with consistent score improvement and upside potential of up to 49%Not P/E, it’s PEG ratio that matters! These 5 stocks could be possible wealth creators, suggests this metricCombating inflation, rising rates: Value stocks to watch out in 2023 for a model portfolioManufacturing is big theme; PSU banks, infra to outshine: Sandeep Tandon of Quant Mutual FundWhat is overconfidence bias and how to keep it away while investingThese 4 stocks from chemical sector with “Strong Buy” & “Buy” recommendations have upside potential of up to 60%
Subscribe to ETPrime

ADVERTISEMENT

“Any technique that makes things invisible to radar can also be used in the commercial sector to reduce radiation leakages from buildings and make them more secure. For example, invisibility to radar can also be used in private or covert establishments for the protection of information and privacy,” he said.

Radar Cross Section (RCS) reduction is a way to make something less visible to radar. RCS reduction is achieved by using materials that can absorb radar signals, or by shaping the object in a way that makes it difficult for radar to detect.

“We have developed a technology based on Frequency Selective Surface (FSS) that absorbs a wide range of frequencies used in radar, which makes the surface invisible to radar,” Reddy explained.

The proposed design uses an optically transparent Indium Tin Oxide (ITO)-coated Polyethylene terephthalate (PET) sheet. The FSS patterns are created on this PET sheet
PET sheet is a common thermoplastic that provides high dimensional stability, excellent mechanical strength and good resistance.
The researchers created FSS pattern on the PET sheet with the laser engraving technology. Due to symmetrical and lossy nature of these patterns, the proposed material absorbs a wide range of electromagnetic (EM) wave frequencies within C (4-8 GHz), X (8-12 GHz) and Ku (26-40 GHz) Band
Tests showed that this technology can absorb more than 90 per cent of the radar waves in a wide range of frequencies.
This technology can be used on window or glass panels of stealth vehicles and covert establishments due to its optical transparent nature,” Reddy said.

“The team has already developed a prototype and the results have been published in IEEE Journal. This technology has potential applications for RCS reduction and absorption of unwanted radiation leakages,” he added.

Author

Leave a Reply

Your email address will not be published. Required fields are marked *