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Intruder Detection System - A LoRa Based Approach
In today's world, all the countries are facing threats from the intruder. This is challenging the internal security of the nation. Hence, military applications require locating the intruders in theExpand
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United States Patent ( 19 ) Nestel et al . 54 ) DEVICE FOR DETERMINING THE DIRECTION OF INCIDENT OPTICAL
In a sensor head (1), hemispherical in form, a plurality of optical fibers (4) is uniformly distributed over the convexly arched surface area (3), and mounted therein. The other ends of the opticalExpand