Poor GNSS accuracy? [Bug 8]

[Nail]

Using the GPSMAP 67, your track record will be smoother. The 67 behaves as if you were driving a truck, and the 66sr as an agile urban crossover. Paths drawn on maps, usually in more difficult terrain, are more simple and do not reflect the specificity of the terrain. 67 acts like those mappers. If I had 67 at first, I'd be glad it's going according to the map. In fact, he takes shortcuts. His route is therefore shorter. Below is the result of a trip to a forest with varied terrain.

Spoiler

67vs66sr22.jpg

green 67, red 66sr

Spoiler

67vs66sr23.jpg

*** Image formatting corrected to comply with forum guidelines ***

[Nail]

Another strange GPSMAP 67 reaction.
This is the same trip I described above.
The device has factory settings with recording activities on auto.
After reaching the start of the hike, I turned on the GPSr 67. As you can see, before it was positioned, it started recording the previous position. Interestingly, the length of the straight line was not added to the hike.
I didn't have the save set to auto before, so maybe it's normal.

Spoiler

67vs66sr24.jpg

[Przekątny]

The track distance is the sum of the distances between the individual sections between the track points,
with different recording interval settings, the total distance may vary significantly.
Comparing track distances will not be objective.

[GPSrChive]

The track distance is the sum of the distances between the individual sections between the track points,
with different recording interval settings, the total distance may vary significantly.
Comparing track distances will not be objective.

...for example...

[Przekątny]

After reaching the start of the hike, I turned on the GPSr 67. As you can see, before it was positioned, it started recording the previous position. Interestingly, the length of the straight line was not added to the hike.
I didn't have the save set to auto before, so maybe it's normal.

Garmin navigators connect track recording sessions with a straight line if the previous recording has not been archived. in the point Test_Zoom2 there was the first registration due to the Auto setting, one point was enough.

[Nail]

Garmin navigators connect track recording sessions with a straight line if the previous recording has not been archived. in the point Test_Zoom2 there was the first registration due to the Auto setting, one point was enough.

You're right, instead of checking the gpx file, I create spam.
I thought I had my history cleared.
However, the question remains why he did not add a line to the travel distance.

[mimichris]

I noticed that there are much more L5 bars at the GPS satellite system with the 67. But the signal bars are weaker at the Galileo satellite system. The Galileo system was, as far I experienced with the 66sr, responsible for the very good accuracy, this would explain why the 67 performs weaker.

From the graph in the Rinex file of the 67, it seems that the GPS system works intermittently, because you only see dots instead of having solid lines like the 66sr, which also explains the low consumption. Does this make the accuracy less good?
Then the satellites are not all present as on the 66sr, curious as operation.

[Nail]

From the graph in the Rinex file of the 67, it seems that the GPS system works intermittently, because you only see dots instead of having solid lines like the 66sr, which also explains the low consumption. Does this make the accuracy less good?
Then the satellites are not all present as on the 66sr, curious as operation.

I don't know if that's the reason, but the 67 is definitely less accurate than the 66sr. All my tests prove it.

[Gadwin]

To those who had a displayed gnss accuracy below 1.8m, is it still the case with firmware 4.80? Now I get almost always 1.8m, not right on the beginning like on the 66sr, but after a short time.

[Nail]

To those who had a displayed gnss accuracy below 1.8m, is it still the case with firmware 4.80? Now I get almost always 1.8m, not right on the beginning like on the 66sr, but after a short time.

You wanted it, you got it. Your dreams have come true.