On Fri, Sep 12, 2014 at 10:50 AM, Malcolm Robb <[email protected]> wrote: > The stronger the signal, then the further off phase you can recover it, but > there will always be a proportion of signals that cannot be - and I estimate > that to be 30% at my location.
I agree with that, but currently dump1090, at least my code tree (maybe you already improved your), is not able to take advantage of corrections that are a lot simpler than the nearly-90 degrees out of phase issue. So at least doing this there is some margin for improvements... About 2.4 Mhz, really it is a shame to waste a lot of CPU if the improvement is small, a good thing about the current implementation is that at least it is fast while far from perfect. Another option could be to have the input of multiple dongles combined maybe, since they have oscillators with random phases, what one receives out of phase could be in phase in the other one. Not perfect but still... Salvatore -- Salvatore 'antirez' Sanfilippo open source developer - GoPivotal http://invece.org "One would never undertake such a thing if one were not driven on by some demon whom one can neither resist nor understand." — George Orwell
