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AUDIO SPOTLIGHTING

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INTRODUCTION n   Audio spot lighting is a very recent technology that creates focused beams of sound similar to light beams coming out of a flashlight. By ‘shining’ sound to one location, specific listeners can be targeted with sound without others nearby hearing it, ie to focus sound into a coherent and highly directional beam. It uses a combination of non-linear acoustics and some fancy mathematics. But it is real and is fine to knock the socks of any conventional loud speaker. n   The Audio Spotlight & Hyper Sonic Sound Technology (developed by American Technology Corporation), uses ultrasonic energy to create extremely narrow beams of sound that behave like beams of light. Audio spotlighting exploits the property of non-linearity of air. When inaudible ultrasound pulses are fired into the air, it spontaneously converts the inaudible ultrasound into audible sound tones, hence proved that as with water, sound propagation in air is just as non-linear, and can be calcul...
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Electronic Reconnaissance, ELECTRONIC COUNTERMEASURES (ECM), ELECTRONIC COUNTER-COUNTERMEASURES (ECCM)

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Electronic Reconnaissance: Reconnaissance aims to give to field players, at a tactical level, the information they need: Where are (and where will be) the targets, what are their defenses, what military means to use, what kind of weapon is the best suited, when to conduct the attack, etc. Due to short reaction time in Air Defense, this task is generally carried out directly by the AEW system. In fact in some cases the AEW platform is a C3I system itself that controls the fighters in real time. For ground targets, due to slower evolution of the situation and to a more complex environment (collateral damage avoidance, mask), a specific mission is needed. This mission uses SAR/MTI systems either fitted in POD carried by a manned aircraft (business jet or fighter), or carried by an unmanned vehicle (UAV). The main objective of these missions is to re-acquire the targets (in case they are moved as Ballistic Missile Launchers), and to identify and locate them accurately. Once again fusion ...
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making a Lan wire

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Image one is crimping tool; second and third is RJ-45 connector and fourth is peeled lan cable... Cables are generally of two categories,, 1)CAT-5 2)CAT-6 former belong to the category of UTP( unshielded twisted pair ) and later to STP also the EIA/TIA(electronic industry alliance or association and telecom industry alliance) has maintained two standards 568-A and 568-B.. When u peel off the jacket of the lan cable you will get eight types of wires in a pair of four ..these are: 1)white with orange stripes(call it white of orange or W/O) 2)Orange 3)white of green 4)blue 5)white of blue 6)green 7)white of brown 8) brown also at both the ends of lan cable we have two connectors .. These are RJ-45 connectors... always hold connectors with knob side downward..And when we place the wires in the above mentioned fashion in the RJ-45 connector it is 568-B standard.. EIA/TIA has defined three categories of cables... 1)straight cables 2...
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