Ok like the primary radar I have spent 7 years working on How do I pull out doppler shifted signal from a waterfall spectrum
The doppler shift is slow though Not a chirp but a slow 5 minute chirp Andrew Sent from my iPhone > On 23 Aug 2017, at 8:05 pm, Marcus Müller <muel...@kit.edu> wrote: > > So, adapt the scale with which you look at things. > > I think your question could actually use a lot of "describe the problem that > you're actually having". > > The point is that you don't really seem to understand how you'd "pull the > doppler signals" out of a combination of signals. Now, we all love to help > each other, but with this, I'm really stuck with "I don't know what Andrew > needs help with". My gut feeling is that you haven't got a firm grip on what > Doppler estimation really is, or how you can do it: >> I guess this would require some sort of processing ? > GNU Radio can help you /implement/ that, but at least the basic principles > are universal. I'd have done very much the same as Chris: point you to > references, which will allow you to recognize the math behind Doppler > estimation from actual implementation. > Best regards, > > Marcus >> On 08/23/2017 07:42 AM, Andrew Rich wrote: >> Sorry you misunderstood my question >> >> I want the doppler shift of the satellites to be very distinct from the >> station with no doppler shift >> >> Much like doppler shift radar perhaps >> >> But the change in frequency can be minutes long for the satellite pass >> >> Andrew >> >> >> >>> On 23 Aug 2017, at 3:26 pm, Chris Kuethe <chris.kue...@gmail.com> wrote: >>> >>> https://github.com/wnagele/gr-gpredict-doppler >>> https://github.com/daniestevez/doppler >>> >>> might be helpful or at least inspirational. >>> >>>> On Tue, Aug 22, 2017 at 9:58 PM, Andrew Rich <vk4...@tech-software.net> >>>> wrote: >>>> Sorry this is new to me >>>> >>>> I have just worked out I can see satellites in a waterfall display due to >>>> their doppler shift >>>> >>>> I think that lends itself to meteor shower >>>> >>>> Can gnu radio be used to assist pulling out the >>>> doppler signals from the non doppler ones ? >>>> >>>> I guess this would require some sort of processing ? >>>> >>>> Andrew >>>> >>>> Sent from my iPhone >>>> >>>> _______________________________________________ >>>> Discuss-gnuradio mailing list >>>> Discuss-gnuradio@gnu.org >>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >>> -- >>> GDB has a 'break' feature; why doesn't it have 'fix' too? >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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