The sonar system can be used onboard various platforms, including ships, submarines, and helicopters.
The father of the child in viral photo of 2018 Kerala flood Vijayaraj was bitten by a stray dog on Monday.
Meanwhile, the red alert in the Idukki Dam still continues even though the water lever has receded.
Lights resembling the tricolour were flashed over the cascading waters of the dam on Wednesday night.
With water flowing to the Periyar River from Mullaperiyar Dam, houses located in areas such as Manchumala, Aattoram, Kadassikadavu and Karuppupalam were flooded
He asked everyone to remain cautious as the water inflow to the dams and reservoirs is still strong due to rains in the eastern part of Kerala.
A low-pressure formation over the North Western Bay of Bengal, off the coast of Odisha and Bengal, is likely to intensify in the next 24 hours, warns IMD.
Idukki dam loses water worth Rs 21 lakh every hour with opening of 3 shutters.
The gushing water will reach Kavalangad in Ernakulam district in 1 hour and 10 minutes. The water is estimated to reach Kaladi in 4 hours, Aluva in 9 hours and Varappuzha in 12 hours.
He said the distributaries and streams from the Periyar river have been cleaned under 'Operation Vahini' to ensure the natural flow of water.