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BRAHMOS missile test-fired from destroyer INS Chennai in the Arabian Sea:

On October 18, 2020, the supersonic cruise missile BRAHMOS was successfully tested by the indigenous stealth destroyer INS Chennai of the Indian Navy, hitting a target in the Arabian Sea. With its full accuracy, the missile hits the target.
♦ After conducting high-level and unnecessarily complicated manoeuvres, the BRAHMOS missile reached the target successfully with pin-point precision.
♦ Defence Minister Rajnath Singh welcomed the successful launch of the missile by the Defence Research and Development Organization (DRDO) and the Indian Navy.
♦ BRAHMOS is a prime strike weapon that will ensure the invincibility of the warship by attacking long-range naval surface targets, thereby making the destroyer another deadly Indian Navy platform.
♦ India and Russia have jointly designed , built and manufactured the supersonic cruise missile BRAHMOS.
Brahmos is named by the names of the rivers Brahmaputra & Moskva. The missile is a two-stage (solid propellant engine in the first stage and liquid ramjet in second) air to surface missile. Brahmos is multiplatform that is it can be launched from land, air, and sea and multi capability missile with pin-point accuracy that works in both daytime and night time, amid the weather conditions. It works on the "Fire and Forgets" principle means it does not need further guidance after its launch. This missile is one of the fastest cruise missiles currently operationally deployed with the speed of Mach 2.8, which is 3 times more than the speed of sound.

A hybrid model of smart fence tested along the LoC:

In order to check infiltration, the Army has greatly enhanced its electronic surveillance along the Line of Control ( LoC) and work is underway on turning the existing border fence into a smart fence integrated with several sensors.
♦ Tough the cost of converting the entire fence over a 700 km stretch into a smart one will be too high; a hybrid model is now accepted.
♦ LIDAR (Light Detection and Ranging) sensors, infrared sensors and cameras, among others, will be built into the barrier. Approximately 700 m from the LoC, the current fence is known as the Anti-Infiltration Obstacle System (AIOS).
♦ The double row fence was constructed between 2003 and 2005 with concertina wire.
♦ With its high rate of degradation every year due to snow, the Army came up with a proposal to install a smart fence with various sensors integrated into it and a pilot project was subsequently taken up.
Light Detection and Ranging (LIDAR):
By illuminating the target with laser light and measuring the reflection using a sensor, LIDAR is a technology for measuring distances (ranging). To make digital 3-D representations of the target, variations in laser return times & wavelengths can then be used. It has applications that are terrestrial, airborne and mobile. Lidar is usually used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry. Lidar uses ultraviolet, visible, or near-infrared light to image objects. It can be used to target a wide range of materials, including non-metallic objects, rocks, rain, chemical compounds, aerosols, clouds and even single molecules.

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