Bistatic radar example not working for rectangular arrays

2026 3 23
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更新时间：2026 4 9
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The functoin "transmit()" of the bistaticTransmitter crashes when the transmitter is using a rectangular array (or, in general, any non ULA antenna) due to the function accessing the number of elements of the array as "obj.TransmitAntenna.Sensor.NumElements" instead of calculating the number of elements from the size property of the array.

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Sergi Aliaga
Sergi Aliaga 2026-4-9，20:18

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I reached out to Mathworks and, after some back and forth, they fixed the issue for R2025b onwards.

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Adarsh
Adarsh 2026-4-9，20:05

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Hi @Sergi Aliaga,
As per my understanding you are facing an error related to a missing field "NumElements" while running "transmit()" function of the "bistaticTransmitter". This looks like a bug.
After going through the file "bistaticTransmitter.m" I have found that the "obj.TransmitAntenna.Sensor" object contains a "getNumElements" method, after using this to get the output instead of "NumElements" property I was able to resolve the error temporarily.
Alternatively, you can try installing the latest update of MATLAB to check if its resolved in the release.
I hope this helps!

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Sergi Aliaga
Sergi Aliaga 2026-4-9，20:18
Hi Adarsh,
Yes, it is indeed a simple bug in the way the bistaticTransmitter gets the number of antenna elements. I reached out to Mathworks and, after some back and forth, they fixed the issue for R2025b onwards, so good news!
Thank you for your answer nonetheless!
Cheers

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