I do have an overview of basic radar signal processing chain [Data cube, 3 stages of FFT, Range, Range-Doppler map, coherent/non-coherent integration, coarse DoA etc.].
I am now trying to understand an advanced DoA estimation technique-MUSIC and one of the road blocks is the snapshot concept. Nearly every paper retrieved from google assumes an prior understanding of snapshots and am yet to find one that tells me what exactly is it.
So, what are snapshots in DoA estimation?