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Mixed signals: digitization and computers help process increasingly complex radar, communications emissions.
From: Journal of Electronic Defense
Date: 20050501
Author:McKenna, Ted
Electronic signals flitting across the battlefield are like muddy prints or crackling branches that a smart tracker can follow through the woods on the trail of big game. But James Fenimore Cooper's Natty Bumpo didn't have the kind of eyes and ears that a modern warfighter's signals-intelligence (SIGINT) equipment offers.
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Today, locating the source of an electronic or communications signal, through such measurements as time difference of arrival and angle of arrival, is getting increasingly accurate, to the point where coordinates of a signal's ...
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