Radar sector scanning!
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I want to scan from 0 to 45 degress azimuth scanning electronically. I made 1 degree beamwidth of 32dbi gain using 20 by 20 array. I couldn't understand radar scan URA example regarding the rotation of antenna. It states that rotational movement is not supported but howcome antenna scanned from -45 to 45? Any help
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Honglei Chen
2016-9-29
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The example uses the electronic scanning, i.e., scanning the beam via changing the phase at each element. Also for simple rotation, it isn't too difficult to write one yourself. You just need to use a different orientation at each angle and then use rangeangle to compute the target angle relative to the array.
HTH
5 个评论
Hassam Mahmood
2016-9-29
Honglei Chen
2016-9-29
In this example
The following section computes the needed phase shift at each element for a given direction
% Calculate steering vector for current scan angle
scanid = floor((m-1)/int_pulsenum) + 1;
sv = steeringvec(fc,scangrid(scanid));
w = conj(sv);
and then the weights is applied at the radiator to form the beam toward that direction
txsig = radiator(txsig,tgtang,w);
HTH
Hassam Mahmood
2016-9-29
Honglei Chen
2016-9-29
编辑：Honglei Chen
2016-9-29
Yes it steers the beam.
It looks like you are not familiar with the array processing subject. Here is a good article to start with
Hassam Mahmood
2016-9-29
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