f Of sandip
>> gangakhedkar
>> Sent: Monday, September 21, 2015 12:24 PM
>> To: Joachim Fabini
>> Cc: questions@lists.ntp.org
>> Subject: Re: [ntp:questions] Synchronize distributed PCs with GPS 1 PPS
>> and NTPD for OWD measurements
>>
>> Joachim
ces+elliott.ch=comcast@lists.ntp.org] On Behalf Of sandip
> gangakhedkar
> Sent: Monday, September 21, 2015 12:24 PM
> To: Joachim Fabini
> Cc: questions@lists.ntp.org
> Subject: Re: [ntp:questions] Synchronize distributed PCs with GPS 1 PPS
> and NTPD for OWD measurements
&g
Joachim,
Thanks for your detailed solution, which was along the lines of my
thinking..
Do you know of any off-the-shelf GPS receiver with RS232 and PPS
capability?
Hal,
>> What sort of distance accuracy are you expecting?
Not very stringent..up to 10m will do.
>> What sort of distances will
On 14.09.2015 12:43, Hal Murray wrote:
> Joachim Fabini said:
>> - Re-compile your kernel for LinuxPPS support, following the instructions on
>> http://linuxpps.org/wiki/index.php/LinuxPPS_installation .
>
> That hasn't been necessary for a long long time.
Most recent distributions have PPS line
sandip gangakhedkar said:
> Let me clarify that the two nodes *do not* have access to the internet, but
> only to each other, over an unreliable wireless link. So I did not consider
> the option of choosing NTP sync during the measurements.
What sort of distance accuracy are you expecting?
What
Quoting sandip gangakhedkar (sandipfl...@gmail.com):
> Any suggestions/comments on my approach are much appreciated.
Try using real serial ports, avoid USB-serial.
I'm using the Garmin GPS18x LVC puck, it has a PPS signal and talks
RS232 serial. Sells on eBay for $50/$75. You can either try and
Sandip,
relative synchronization over the wireless link is a mess. I use Linux
desktop systems with GPS/PPS receivers for measuring one-way delay in
mobile setups and it works. Imho any PPS-capable GPS receiver on the
market should satisfy your needs when you integrate it correctly into a
Linux de
>
> The goal is to have a setup for measuring One Way Delay of UDP packets
> between two moving nodes, over a long-range wireless network.
>
I understand that you are trying to measure accurately the packet
flight times between two computers over a long-range wireless network.
You know, of cou
Thanks Charles S. and Charles E. for your valuable comments.
Let me clarify that the two nodes *do not* have access to the internet, but
only to each other, over an unreliable wireless link. So I did not consider
the option of choosing NTP sync during the measurements.
Of course, here I am assumi
Hi, Sandip--
On Sep 11, 2015, at 8:05 AM, sandip gangakhedkar wrote:
> Hello,
>
> I am trying to sync the system clocks of two desktop/laptop computers
> within sub millisecond accuracy.
>
> The goal is to have a setup for measuring One Way Delay of UDP packets
> between two moving nodes, over
Hello,
I am trying to sync the system clocks of two desktop/laptop computers
within sub millisecond accuracy.
The goal is to have a setup for measuring One Way Delay of UDP packets
between two moving nodes, over a long-range wireless network.
My plan is to set up the two machines as Stratum-1 NT
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