From: A composite method for improving the resolution of passive radar target recognition based on WiFi signals
Duration
Period
Average power
T step
Long preamble
TL=2TFFT=6.4 us
TFFT=3.2 us
P L
Tstep=5 us
Chirp overlapped
Tchrp=0.5 us
a Chirp/preamble
Pchrp= 1:2 ∼2PL