[USRP-users] Phase after Freq Hopping

Marcus D. Leech patchvonbraun at gmail.com
Tue Mar 12 18:05:25 EDT 2019


On 03/12/2019 12:49 PM, Patscheider, Dominik via USRP-users wrote:
>
> Hello ,
>
> For a Radar I´m transmitting and receiving with the USRP X310 samples 
> on different frequency steps.
>
> For instance, after 4 frames I´m coming back to the first center freq 
> and continue this a few times. Hope the following description helps…
>
> f3        |phase4|       |…|
>
> f2 |phase3|       |…|
>
> f1 |phase2|       |phase6|       …
>
> f0 |phase1|       |phase5|
>
>                 t ------>
>
> According to the freq adjust every frame starts with a new phase.
>
> Phase 1 ≠Phase 5
>
> Is there any possibility to get the same phase after returning to the 
> same center freq? Phase 1=Phase 5, Phase 2 = Phase 6,…
>
> Thanks in advance.
>
> dominik
>
>
Almost certainly not.  It would take a very special type of frequency 
synthesizer to achieve that.


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