Traccar showing crazy route.
What accuracy is configured? Has the phone been indoors during any of the route?
medium (i'll try high)
i was holding the phone
I see something similar but nothing like as bad, cell phones do not have very reliable GPS, reflections, low power usage configs can give "guesstimate"positions, I asked on a forum where experts reside on cell phone GPS and it's not unusual. If I walk the dogs through the woods and bend down or go into a building the trace will often spur off incorrectly I do not get this with a proper vehicle tracker, just my Moto G4+
I think it's not unusual.
The system works like a mirror. It just reproduces what the device sends to it. So ask what your device somehow requires these coordinates for it.
You can maintain high accuracy. But still, remember that satellite signals don't work very well indoors.
And be 100% sure that the problem does not exist in the system or the device, but in the application.
There are also some settings in the XML that you can make to decrease these small jumps, putting a minimum distance to be ignored by the system. See more about this at: https://www.traccar.org/configuration-file/
Or you can also set a minimum distance for your device before it sends a new location to the platform. For example, only send when it moves 100 meters. In the application you have this option, if it is a tracker, it will be by SMS command that it is in your tracker's manual
I still have some problems like this one:
Probably 'cos my phone sux like @Chris Wilson said. I'll try a real tracker soon.
I set precision to high and I'm only sending the position once a minute or after 50 meters.
Things seem to have improved since last time.
I'll definitely check the xml file, @Mega Box Brasil.
thanks everyone!
This is a margin of error that any device can have. Believe that it does not affect anything and clearly see a route that has been taken.
But, if you want to correct this error, it can be 2 things.
The device with its margin of error (in this case, there is nothing to do).
The map with a margin of error (in this case, you can project these coordinates onto another map to make a comparison).
Try using another map layer to make comparisons. You can get and latitude and longitude in the history, and project it manually on google maps.
You can compare latitude and longitude by manipulating a google maps URL.
if the error remains on google maps, it is clearly not on google maps that you are in trouble. It is your device that is sending a latitude and longitude with a margin of error (acceptable), and the traccar system is just showing the information it receives, which is what it does. @
Out of interest these are the replies I got from a forum called "Time Nuts" where experts in GPS reside, but I think you will find a proper tracking device like my Teltonika FMB920 does not show these irritating issues. A phone seems to have a poor implementation of GPS in comparison. Good luck! :
GPS (and time derived from GPS) on a phone is a funny thing. They
obsess about energy consumption ( how many picojoules/fix kind of
things). Therefore, they do fixes on a sort of "as needed" basis and
feed that to the API. A couple things can screw this up:
The legal requirement driving GPS is the E-911 service, but they only
need good accuracy when you're making a 911 call.
Most phones make heavy use of Assisted-GPS - the cellsite gives them an
estimate of position and the approximate code phase and timing, so that
acquisition can be fast (and consume small power).
A mapping application (or the phone API, I don't know) could also do
some sort of "forward estimation" of position (i.e. you were heading 130
degrees at 5 m/s so after 10 seconds, your position is X meters north
and Y meters East.
Note also that the mapping applications target people driving so they
do interesting things like snapping to likely positions (i.e. you're not
likely to be in the middle of a river, so they snap to the road) and
they filter out small velocity variations. If you're walking, the
application might shift to a different position filter (particularly in
urban areas, where multipath is a reality, but position is aided by
things like known WiFi access points, etc.)
Hi
Cell phone GPS is very much a “that depends” sort of thing.
In some cases, the raw data comes to the phone, but the location
processing takes place “in the cloud” somewhere. Loose cell coverage
with this sort of device and you also loose location. This sort of processing
does allow “tower time of arrival” sort of location to be blended in. That
may or may not be a good thing.
With a true GPS in the phone, you next get into antenna location. There
isn’t much space in a phone so where ever it goes will be a compromise.
The main goal of the phone is the cell connection. I’d bet the GPS antenna
very much gets the not quite so good location for it’s antenna.
Cell phones “wake up” on a fairly regular basis. They spew RF for a bit and
then go back to sleep. Depending on how long this goes on for the GPS may
be blocked out (RF overload) for a short bit or for quite a while.
Even with an “ideal” GPS, you have multi-path issues. If not caught and
suppressed they will make the location “jump”. How well this or that chip
set or approach deals with them is variable.
GPS units do have firmware in them. That firmware can and does have
bugs in it. Some are quite reproducible others not so much. Hop on this
road in Montana going that way with my Garmin and you can very
repeatably watch the track wander off by a couple miles. The map data
is correct … the GPS, not so much.
Those are just the first few that come to mind. There are certainly other
issues as well.
Lots of fun
Bob
Hello, I just started using traccar.
I installed traccar client on my cellphone and started tracking it, but I get this crazy route.
Can anybody help me fix this?
In red my actual path.
I was using a motog6.