SCANNED - meaning and definition. What is SCANNED
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What (who) is SCANNED - definition

IN PHYSICAL MICRO AND NANOTOPOGRAPHY MEASURING INSTRUMENTS LIKE SCANNING PROBE MICROSCOPE
Counter-scanned images

Scanned      
·Impf & ·p.p. of Scan.
Counter-scanning         
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  • (b)
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  • (b)
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  • (e)
Counter-scanning (CS) is a scanning method that allows correcting raster distortions caused by drift of the probe of scanning microscope relative to the measured surface. During counter-scanning two surface scans, viz.
Passive electronically scanned array         
  • superpose]]) in front of the antenna to create a [[plane wave]], a beam of radio waves travelling in a specific direction θ.  The phase shifters delay the radio waves progressively going up the line so each antenna emits its wavefront later than the one below it.  This causes the resulting plane wave to be directed at an angle θ to the antenna.  The computer can alter the phase shifters to steer the beam to a new direction, very quickly.   The velocity of the radio waves is shown slowed down enormously.
ANTENNA IN WHICH THE BEAM OF RADIO WAVES CAN BE ELECTRONICALLY STEERED TO POINT IN DIFFERENT DIRECTIONS
Passive phased array radar; Passive Electronically Scanned Array; Passive phased array
A passive electronically scanned array (PESA), also known as passive phased array, is an antenna in which the beam of radio waves can be electronically steered to point in different directions (that is, a phased array antenna), in which all the antenna elements are connected to a single transmitter (such as a magnetron, a klystron or a travelling wave tube) and/or receiver.

Wikipedia

Counter-scanning

Counter-scanning (CS) is a scanning method that allows correcting raster distortions caused by drift of the probe of scanning microscope relative to the measured surface. During counter-scanning two surface scans, viz., direct scan and counter scan are obtained (see Fig. 1). The counter scan starts in the point where the direct scan ends. This point is called the coincidence point (CP). With the counter scan, the probe movement along the raster line and the probe movement from one raster line to the other raster line are carried out along the directions that are opposite to the movements in the direct scan. The obtained pair of images is called counter-scanned images (CSIs).

Examples of use of SCANNED
1. The NAO found less than 20% of hospitals with stroke units scanned patients in under three hours and only 22% of patients were scanned on the same day.
2. Pornographic photographs seized by police would also be electronically scanned.
3. Dirty, battle–clad soldiers scanned the area from their hatches.
4. Kyle Haugsness scanned the reports and entered crisis mode.
5. Leatherman paused and scanned the Xcel Energy Center.