Where to find the phased.URA steering vector equation

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Chen 2017-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/374001-where-to-find-the-phased-ura-steering-vector-equation

回答： Honglei Chen 2017-12-21

after defined URA using phased.URA, using phased.SteeringVector, I can get the URA steering vector. 1. where I can find the math equation behind phased.SteeringVector function? 2. if I have a 5x5 URA, the phased.SteeringVector gives a 25-element vector of the URA, how do I link the elements in the vector to the elements in the URA, or how do I build a 5x5 matrix, its elements match 5x5 URA elements?

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Answer 1

Honglei Chen 2017-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/374001-where-to-find-the-phased-ura-steering-vector-equation#answer_297322

You can find the general equation here at

http://www.antenna-theory.com/arrays/arrayfactor.php

There is a one to one mapping between the elements and weights. For URA, I think the index follows the MATLAB convention of matrix indexing. You can confirm this by using viewArray and turn on ShowIndex parameter.

HTH