parameters for backscatterRadarTarget and its target
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MatlabQuestion
on 10 Dec 2018
Edited: MatlabQuestion
on 19 Dec 2018
in the example "Simulating a Polarimetric Radar Return for Weather Observation"
"
azpatangs = [-180 180];
elpatangs = [-90 90];
target = phased.BackscatterRadarTarget('EnablePolarization',true,...
'Model','Nonfluctuating','AzimuthAngles',azpatangs,...
'ElevationAngles',elpatangs,'ShhPattern',shhpat,'ShvPattern',shvpat,...
'SvvPattern',svvpat,'OperatingFrequency',fc);
"
Questions:
- angle parameter in the following code "ang_az" should be in the range of the previous defined "azpatangs" ?
" tgtsig = target(txsig,[ang_az;zeros(size(ang_az))],axes);"
2. "ShhPattern" should be the pattern defined with azpatanges and elpatangs?
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Accepted Answer
Honglei Chen
on 11 Dec 2018
For question 1, the answer is no. However, the RCS pattern is only defined within the range specified by azpatangs and elpatangs. Therefore, for any angle beyond that region, the return is 0.
For question 2, the answer is yes. More precisely, the pattern region is defined by the parameters AzimuthAngles and ElevationAngles in BackscatterRadarTarget. In this case, they happen to be azpatangs and elpatangs.
HTH
3 Comments
Honglei Chen
on 11 Dec 2018
In this case, the RCS is defined for the two ends and I believe they are the same, so in this case you can think that the pattern is constant. In general if you define the two bounds, then the target would interpolate in between.
HTH
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