MUSIC algorithm for direction of arrival

I just need to ask is MUSIC algorithm a phase comparison technique?

regards

Uzmeed

Answer 1

[Honglei Chen]

Generally speaking MUSIC belongs to subspace method. It doesn't really compare amplitude or phase, instead it takes advantage of orthogonality between signal and nosie subspace. Not sure if you are mixing it with monopulse techniques, which does have amplitude and phase flavers.

HTH

[uzmeed]

thanks Honglei

I had been working on implementing the MUSIC algorithm. I have done it sucessfully writing my own algo. Now I need to compare them.

One thing I have seen is that the input to the MUSIC algorithm is taken from IF in the form of a+bi to form a covariance matrix.

It actually doesnot compare the amplitude or phase but amplitude and phase are the input to the algorithm.

Is my understanding correct?

Answer 2

[Shunichi Kusano]

Hi,

This page may help you.

https://www.mathworks.com/help/phased/ug/music-super-resolution-doa-estimation.html

Answer 3

[uzmeed]

Thank you Shunichi

I know the theory of MUSIC well and that it is a spatial method for AoA estimation

My question is that AOA has two major categories Amplitude and phase comparison

Broadly speaking ni which category it lies? and does it necessarily needs phase info for implementation

Please also mention any literature that specifically addresses this aspect.

Moreover MUSIC algo is part of phased array tool box in MATLAB so should I consider it as phase comparison method specfically

Regards

uzmeed