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A localization method for a sonar system equipped with an emitter and two receivers is presented in this paper. The signal reflected from the target is filtered through the receiver beam patterns whose knowledge is used to estimate the direction of the echo. Indeed, the known emitted signal and measurement of its travel time make it possible to compensate for distance and air absorption effects, and...
Optical data storage is advancing rapidly as we move forward in the 21st Century. Most people today are familiar with CDR and CD-RW as forms of optical data storage, but DVD-R, with considerably higher capacity, will challenge CD-R as the preferred storage medium soon. This review paper looks at the current state of optical recording and some of the current techniques which offer increased magneto-optical...
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