Questions about the different distance resolutions between MUSIC and 3D-FFT

[StZhang-B]

Because both MUSIC and 3D-FFT use 2D-FFT to measure distance, then why are the distance resolutions of the two different?

[ekurtgl]

MUSIC is a subspace-based method, it is not using FFT (see here). We use FFT in range estimation while MUSIC is used in angle estimation. I hope this helps.

[StZhang-B]

That's helpful, thank you.

[ekurtgl]

You are welcome!