Courtesy a quick internet search:
http://insidegnss.com/south-korea-developing-an-eloran-network-to-protect-ships-from-cyber-attacks/
https://rntfnd.org/wp-content/uploads/Korea-Jamming-Chart.jpg
There was lots of stuff like the above. It apparently just won't
stay dead.
It seems one
Hi
Back in the day, Loran was monitored and corrections were published. If you
really were “time nutty” about using Loran, you got the correction tables (in
the
mail) and post processed them into your measurements.
Bob
> On Sep 9, 2018, at 11:34 AM, paul swed wrote:
>
> The correction
The correction stream is transmitted in the eLORAN signal and does require
some form of reference site to transmitter connection. Just like GPS and
lightspeed use RF to send corrections to the satellites.
Loran C also did the same adjustments from a control site.
But I am hearing nothing about
In message <3d2ae1be-927a-574a-e7f0-c7d2d289d...@earthlink.net>, jimlux writes:
>On 9/8/18 4:52 PM, paul swed wrote:
>I suppose you could have a low rate network (i.e. not "the internet")
>and for the most part, the propagation corrections (whether using 60kHz,
>Loran, Omega, or GPS)
Hi
> On Sep 9, 2018, at 10:43 AM, jimlux wrote:
>
> On 9/8/18 4:52 PM, paul swed wrote:
>> Hello to the group I won't quote figures here but did indeed help UrsaNav
>> do testing. Hey 90 days with a HP 5071 that was a sweet deal at the cost of
>> some power.
>> They do send corrective data in
On 9/8/18 4:52 PM, paul swed wrote:
Hello to the group I won't quote figures here but did indeed help UrsaNav
do testing. Hey 90 days with a HP 5071 that was a sweet deal at the cost of
some power.
They do send corrective data in the signal from reference sites and that
helps propagation
Hello to the group I won't quote figures here but did indeed help UrsaNav
do testing. Hey 90 days with a HP 5071 that was a sweet deal at the cost of
some power.
They do send corrective data in the signal from reference sites and that
helps propagation corrections in the receive software.
It was
Hi
Yup, and over something the size of a harbor, that works ok. It was done with
the “old”
Loran in a similar fashion and a couple of other ways as well. Expanding any
of it to
cover a country is a very different thing …..
I spent a lot of years trying to sell the designers of these
Hi
The differential approach to eLoran involves running two local receivers. You
look at the time of arrival on one
and use it to “calibrate" the time of arrival on the other. Put another way -
you look at the difference between the
two arrival times. They can both “wander” over a 250 ns
Bob,
I believe that information is transmitted with the eloran signal.
Way back when, I remember there was an added pulse called the LDC
pulse. I had to modify that pulse with each transmission based on
an input to the transmit timing unit from the computer.
I found the following on it:
Hi
The gotcha is the differential corrections. That’s not the way these systems
are set up to work. They
function with no external input other than the timing signal its self.
Providing bandwidth to do correction
signaling just isn’t part of the overall system design. If you wanted to use
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