Re: Coordinates of AIS targets

[Владимир Калачихин]

07.05.2023 22:29, Gary E. Miller пишет:
> > the OpenCPN and SignalK understands my AIS sentences and display
> > targets in correct coordinates, but gpsd not.
> Odd, I'd need to see your raw AIS to make a gues.

I found that coordinates in 27'th sentence rounded to one decimal place. 
But for 18'th sentence the accuracy is maintained.

The coordinates are stored in 27'th sentence with precision of 1/600 of 
degrees, so gpsd must return it as least with two decimal places precision.


In attachment the AIS flow with 27 and 24 sentences only. The 
coordinates in 27 sentence has full precision.
I try:
$ gpsfake digitrafficAIS27.log
and in other terminal:
$ gpspipe -w --scaled



Владимир Калачихин

digitrafficAIS27.log
Description: Text Data