UPSC 2014 CDS II GK Paper

DHVANI is a state-of-the-art acoustic sensor-based target training system developed by the CSIR for the shooters of the Indian Army. DHVANI (Detection and Hit Visualisation using Acoustic N-waveIdentification) developed by CSIRNational Aerospace Laboratories(CSIR-NAL), Bengaluru, is used for perfecting marksmanship skills byaccurately determining the location of bullet impact and providing realtime feedback. The system is based on the basic principles of gasdynamics and aero-acoustics