[USRP-users] Phase after Freq Hopping
ianb at ionconcepts.com
Wed Mar 13 02:49:41 EDT 2019
> On Mar 12, 2019, at 3:05 PM, Marcus D. Leech via USRP-users <usrp-users at lists.ettus.com> wrote:
> 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.
> Almost certainly not. It would take a very special type of frequency synthesizer to achieve that.
You mean the sort of frequency synthesizer that might be implemented entirely in the digital domain within say a DUC or DDC with the ability to have a time coordinated update to the respective phase-increment registers? :-)
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