epheterson
Posts: 2
Joined: Wed Jan 16, 2013 6:00 am

GPS Project

Mon Mar 04, 2013 4:03 pm

Hey Guys,
I'm working on a project where I'll have the RasPi stationary, collecting GPS data and storing it. Could you guys recommend a GPS and where to get started? We'll also need wireless transmission of the GPS data, would wifi or Xbee be good options? Also GPS accuracy is the most important element here, I believe most of the options tested on RasPi are decent but not stellar accuracy, which is partly why I'm here asking for more options. Any input you may have is awesome!

Thanks,
Eric

gordon77
Posts: 4626
Joined: Sun Aug 05, 2012 3:12 pm

Re: GPS Project

Mon Mar 04, 2013 4:14 pm

I am sure i've seen threads on here using this GPS dongle

http://mobile.maplin.co.uk/module.aspx?moduleno=476503

Cloudcentric
Posts: 982
Joined: Fri Sep 14, 2012 9:13 am

Re: GPS Project

Mon Mar 04, 2013 4:17 pm

I know everything about nothing"

-rst-
Posts: 1316
Joined: Thu Nov 01, 2012 12:12 pm
Location: Dublin, Ireland

Re: GPS Project

Tue Mar 05, 2013 2:23 pm

Any 'proper' GPS with serial output + either serial-to-USB or GPIO UART with a level-shifter ....maybe if accuracy is the key.
http://raspberrycompote.blogspot.com/ - Low-level graphics and 'Coding Gold Dust'

skingchico
Posts: 27
Joined: Mon Dec 10, 2012 5:48 am

Re: GPS Project

Sat Mar 09, 2013 5:59 pm

Bluetooth GPS devices are also available. You would need to add a USB Bluetooth device to the Pi so you could talk to the Bluetooth GPS. My Bluetooth GPS has a battery but I keep power applied to it through a micro USB connector since it runs all the time. You mentioned wireless so I figured I would mention Bluetooth.

(EDIT) I may have mis-read the origonal post. You may not be looking for a wireless GPS but I will leave this here anyways.

Steve

ibanezmatt13
Posts: 128
Joined: Fri Dec 28, 2012 9:49 am

Re: GPS Project

Mon Mar 11, 2013 9:19 pm

The best GPS unit and the best tutorial for the Raspberry Pi!

http://learn.adafruit.com/adafruit-ulti ... spberry-pi

coyotebush
Posts: 12
Joined: Fri Mar 01, 2013 7:39 pm

Re: GPS Project

Mon Mar 11, 2013 10:34 pm

If you're logging data from a stationary receiver, then it sounds like you are setting up a GPS base station. Are you considering using Rtklib for post-processing?

If setting up a base station, you will need a GPS receiver which outputs "raw" measurements. You also want to use an external antenna.

Here is one example of a low-cost GPS which outputs raw measurements:
http://www.dhgate.com/ublox-lea-4t-gps- ... #s1-1-null

As for antennas, you can start with a patch antenna, but you will want to upgrade once you get things working. Trimble "compact dome" antennas run about $75 used on e-bay and are worth the investment.

User avatar
joan
Posts: 14747
Joined: Thu Jul 05, 2012 5:09 pm
Location: UK

Re: GPS Project

Mon Mar 11, 2013 10:39 pm

What's the point of a stationary GPS receiver?

Is it to provide an accurate time source or for earthquake monitoring or what?

coyotebush
Posts: 12
Joined: Fri Mar 01, 2013 7:39 pm

Re: GPS Project

Mon Mar 11, 2013 10:42 pm

FYI. Here is a link to some other GPS receivers which provide "raw" data.
http://www.onetalent-gnss.com/ideas/usb-hw-receivers

-rst-
Posts: 1316
Joined: Thu Nov 01, 2012 12:12 pm
Location: Dublin, Ireland

Re: GPS Project

Sat Mar 16, 2013 5:51 pm

joan wrote:What's the point of a stationary GPS receiver?
This is the most typical use I have come across: http://en.wikipedia.org/wiki/Real_Time_Kinematic
http://raspberrycompote.blogspot.com/ - Low-level graphics and 'Coding Gold Dust'

xor-function
Posts: 1
Joined: Thu Sep 25, 2014 7:06 am

Re: GPS Project

Thu Sep 25, 2014 7:23 am

This may not be relevant to the op anymore as it's been a year but the following may prove useful for others.
It's a bash script that utilizes the /ttyAMA0 serial connection for gps input and uses a WiFi adapter for pushing data to a remote server.
There's no need to worry about paying for a SIM and it's service.

It's available here:
https://github.com/xor-function/rpi-tracker

You should also be able to use this on different SoC's that run Debian other than the Raspberry Pi as long as you specify the
correct GPS device, /dev/ttyUSB0 for example.

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