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Re: Strangeness with speed

From: Владимир Калачихин
Subject: Re: Strangeness with speed
Date: Thu, 17 Feb 2022 20:30:55 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0

17.02.2022 18:55, Florian Kiera пишет:

gpsd does calculate the speed by using the latest TPV and the current TPV just fine.

I can give you NMEA file consisting of GGA sentences only. Try to force the gpsd to calculate the speed.

What actually wonders me is why does gpsd give out a different TPV with a small time difference? Maybe the high frequency of NMEA messages in sentences1 is at fault?

By NMEA spec - seconds with two digits after the dot. But in sentences2.nmea seconds are integer.

I can send to gpsd NMEA sentences with a different frequency - it doesn't change anything.

Владимир Калачихин

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