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Re: [Discuss-gnuradio] GPS information
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From: |
Marcus D. Leech |
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Subject: |
Re: [Discuss-gnuradio] GPS information |
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Date: |
Thu, 08 Aug 2019 15:26:50 -0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 08/08/2019 02:10 PM, Sara Kim wrote:
Hi,
I'm using gnu radio companion along with my USRP B200. I also have a
GPSDO installed on the radio. Does the gps information get collected
along with any frequency data I collect via gnu radio companion? Also,
is it possible to display that information in the metadata header?
Thanks!
No, the GPS information is not carried along with samples. The
underlying UHD driver does have a sensor interface.
If you look at the source code for the "query_gpsdo_sensors" UHD
utility, you can see how they work, and gr-uhd does provide
APIs for querying, etc. But none of this is inserted automatically
as stream tags or anything.
https://www.gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__source.html