GPS
GPS models:
- Garmin GPS35-HVS GPS, used for time and position stamping of Geode seismic data.
- GlobalSat mod. BU-353.
⚠ (:toc:)
<:vspace>
<:vspace>
!Garmin GPS35-HVS
----
Attach:oemgps35TPPIC.gif"Garmin GPS35"|''Garmin GPS35''
<:vspace>
* [[Attach:specGPS35_rev_e.pdf | GPS35 Technical Specifications, Rev. E, dated March 2000.]] PDF file, 160 kB.
* [[Attach:gpscfg.exe | GPS35 configuration program gpscfg.exe]]. 155 kB. Power off/on the GPS to make new settings take effect.
* Product is discontinued. We use it for time- and position stamping of seismic data collected by the Geode. The GPS should be configured to output '''only one''' type of NMEA telegram; the GPS35 is easy to setup this way.
<:vspace>
<:vspace>
<:vspace>
!GlobalSat mod. BU-353
----
<:vspace>
Attach:BU-353-m.jpg"GlobalSat mod. BU-353"|''GlobalSat mod. BU-353''
<:vspace>
* Manufacturer: [[http://www.globalsat.com.tw/eng/ | GlobalSat]]
* [[http://www.globalsat.com.tw/eng/product_detail1_00000044.htm | Specifications]]
* [[http://www.globalsat.com.tw/eng/product_detail_00000044.htm | Link to BU-353 information]]
* GPS Output Data: NMEA 0183 V2.2 Protocol. Supports these telegrams:<br />GGA, GSA, GSV, RMC, VTG, GLL (VTG and GLL are optional)
* Supplier: [[http://www.elfa.se | ELFA]], p/n: 14-000-49
* By default this GPS transmits a range of NMEA telegrams. There is a configuration program, but it's not possible to select a specific NMEA telegram type and have the GPS only send that one.
* Docs, installation:
** [[(Attach:)USB_GPS_Receiver_Installation_Guide.pdf | USB GPS Receiver Installation Guide]], dated 2007-08-08
** [[(Attach:)GPSinfo_User_Manual_Eng_Ver1.03.pdf | User Manual]], dated 2005-09-07
** [[(Attach:)PL-2303_Driver_Installer.zip| BU-353 Driver for Windows 2000/XP, dated 2007-08-07]]
<:vspace>
<:vspace>
!Syncronize PC clock to GPS
----
<:vspace>
* %newwin%http://www.abstime.com/atomic-clock-sync/#GPSTIME
<:vspace>
<:vspace>
<:vspace>
!Port splitter: Distribute data from one GPS to several COM ports
----
<:vspace>
* %newwin%http://franson.com/gpsgate/
<:vspace>
<:vspace>
<:vspace>
!Program to select specific NMEA telegram and log data at user specified intervals
----
<:vspace>
This Python program will select the $GPRMC telegram from the BU-353 GPS and save data to file at user specified intervals. The $GPRMC telegram is most useful as it includes Date, Time and Latitude/Longitude. File name is generated automatically - e.g. ''GPS-data-2008-183-235959.txt'', consisting of Year, Day of Year and time (PC time).
<:vspace>
[[(Attach:)GPS-globalsat-bu353-logger.py]]
<:vspace>
* Program assumes the USB port is mapped as '''<code class='escaped'>COM4</code>'''.<br />Edit program - value is given as constant in beginning of program - if this is not the case.<br />You can use terminal program %newwin%[[http://ttssh2.sourceforge.jp/ | TeraTerm]] to check which COM port the GPS is assigned to.
* Program also assumes that a folder named c:\gps exists on the PC (can be improved to create this folder if it doesn't exists).
* To use this program on a WinXP machine you need to:
** Install Python: http://www.python.org/
** Install "win32all" extensions for Python: http://starship.python.net/crew/mhammond/win32/Downloads.html - select version that matches Python version number
** Install PySerial: http://pyserial.wiki.sourceforge.net/pySerial
** You should change the WinXP PATH environment variable:<br />'''Start -> Control Panel -> Advanced -> Environment Variables'''.<br />Select PATH and add Python folder, e.g. c:\Python25.
<:vspace>
<:vspace>
!Post-processing of shotpoint position data
----
* http://www.topconeurope.com/index.asp?pageid=12166e1461284b7ca5e68c4f0257448d
* http://www.terratec.no/index.aspx
