Forum: GNU Radio new burst detector

Hi all,

I would like to design burst detector, which will have a bit 
intelligence in
order to avoid stort pulses recording. So far I was dealing with similar
stuff, but I was using microcontroller and plug and play analog 
frontend.
There I was making decision whether signal has enough power or not by 
using
RSSI value, available at frontent's pin. I had very simple averaging 
inside
of microcontroller in order to have noise level, and time constant of 
that
filter was quite big. So, i was only comparing noise level with current
signal strength.
Now I would like to make something similar. I wonder what is the usual 
way
to detect whether the signal is present in the receiver or not. Do you 
think
that i need both signal level detector and preamble "finder" or it can 
work
only with preamble "finder". Since I am dealing with 434MHz ISM band 
with
FSK modulation scheme, the preamble is simple 0 1 0 1 ...

Best
Nemanja



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