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Re: GPSD doesn't report signal dropout

From: Tom Isaacson
Subject: Re: GPSD doesn't report signal dropout
Date: Wed, 7 Oct 2020 16:18:57 +1300

I'd have to go and dig out the NMEA0183 spec to be sure, but I don't
think sentence order is defined and it's fine not to provide a time if
there's no signal.

On Wed, Oct 7, 2020 at 3:55 PM Gary E. Miller <> wrote:
> Here is the event, run through gpsd git head:
> $GPGGA,022038.00,3644.762563,S,17444.069733,E,1,06,1.1,53.0,M,37.0,M,,*42
> $GPVTG,,T,341.7,M,0.0,N,0.0,K,A*0C
> $GPRMC,022038.00,A,3644.762563,S,17444.069733,E,0.0,,071020,18.3,E,A,V*45
> {"class":"TPV","mode":3,"time":"2020-10-07T02:20:38.000Z","ept":0.005,"lat":-36.746042717,"lon":174.734495550,"altHAE":90.0000,"altMSL":53.0000,"alt":53.0000,"epv":20.700,"magvar":18.3,"speed":0.000,"climb":-3.000,"epc":36.80,"geoidSep":37.000,"eph":20.900,"sep":26.600}
> $GPGSA,A,2,06,07,11,19,22,30,,,,,,,1.4,1.1,0.9,1*28
> $GPGSV,2,1,06,01,37,122,,13,21,278,,17,60,275,,24,,,,1*5F
> $GPGSV,2,2,06,28,66,165,,39,,,34,1*57
> [...]
> $GPVTG,,T,,M,,N,,K,N*2C
> $GPGSA,A,1,,,,,,,,,,,,,,,,*32
> $GPGGA,,,,,,0,,,,,,,,*66
> $GPRMC,,V,,,,,,,,,,N*53
> $GPGSV,2,1,06,01,37,122,,13,21,278,,17,60,275,,24,,,,1*5F
> $GPGSV,2,2,06,28,66,165,,39,,,34,1*57
> No TPV gets pushed out due to the missing time.  You should file a
> bugs with Qeuctel.  One for the missing times, and another for
> the sentence reodering.

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