Hey Dean,
For what it’s worth, I’ve resorted to two hacks.
1) where the sum of consecutive correlation mag squared samples is compared to
4*detection, I’ve gone to 8*detection. With the block threshold set to
0.99, this results in threshold levels (compared to the peak correlation
value)
Steven,
I've had the exact same problem as you - my flowgraphs from 3.7.9 worked
well but now I'm getting a lot of false detections from this block.
Is this really how this block is supposed to perform? We just have to use
trial and error to find the right threshold?
Thanks For Any Help,
Devin
Alright, after some more thought I believe I understand what is going on.
By looking at the cross-correlation power for the current input samples, the
threshold can be calculated as a desired false alarm rate. An “arbitrary”
threshold can be set independently of the received signal power.
