# Pulse deinterleaving (RESM side)

Interleaved TOA stream from multiple emitters -> separate by emitter.
classic: PRI estimation via SDIF (sequential difference histogram, Mardia 1989).
1. histogram TOA differences at increasing lag
2. peaks = candidate PRIs
3. sequence-search to extract pulse trains, remove, repeat (CDIF/SDIF)
modern: RNN sequence model (Liu & Yu 2019) handles jitter/stagger/missing pulses
better than threshold histograms. could run the RNN on the embedded GPU.

staggered + jittered PRIs break naive SDIF -> that's the case the RNN earns its keep.