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Invalid position given by Telit HE910-EUG


From: Titouan Christophe
Subject: Invalid position given by Telit HE910-EUG
Date: Fri, 3 Apr 2020 18:02:16 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0

Hello everyone,

Today I observed that one of my Telit HE910-EUG GPS module (NMEA0183 over USB serial) emitted an invalid position in a $GPRMC message. The reported latitude is 153°N, which is clearly invalid.

See 2 sentences obtained from gpspipe below:

# Normal position (51°26.953'N)
$GPRMC,120212.953,A,5126.1926,N,00758.5483,E,0.01,0.0,180800,,,A*5F
# 1s after: invalid position (153°35.322'N)
$GPRMC,120213.953,A,15335.322,N,00758.5483,E,0.01,269.58,180800,,,A*60

As you can see, this GPS has also rolled over in year 2000, but this is a different subject.

However, we have applications that use gpsd to get the geolocation information, and these applications received this wrong latitude.

Hence my question: shouldn't gpsd filter out these invalid coordinates ?

Best regards,

--
Titouan CHRISTOPHE



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