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How can I get better positional accuracy?

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The wide area augmentation systems only improve the positional accuracy by a small amount. To get a significant improvement in positional accuracy, you will need to set up your own local Base Station. A local Base Station is a portable unit that will transmit local DGPS corrections via radio over short distances. There are currently three levels of accuracy improvement available with VBOX products when using a Base Station:

 

  • 40 cm RTCM available to all VBOXII and VBOXIII products.
  • 20cm proprietary correction only available to upgraded VBOXIIS and VBOXIISX units.
  • 2 cm RTK proprietary correction only available on RTK enabled VBOXIII units.

 

  WAAS/EGNOS
DGPS
 
40cm DGPS
Base Station 2 or 3  
20cm DGPS
Base Station 2 only  
RTK
Base Station 3G only  
VBOX Data Loggers
VBOX Mini no.gif no.gif no.gif no.gif
VBOX Lite yes.gif yes.gif no.gif no.gif
VBOX II DCF yes.gif yes.gif yes-with.gif no.gif
VBOX IIS yes.gif yes.gif no.gif no.gif
VBOX IISX (10Hz) yes.gif yes.gif no.gif no.gif
VBOX IISX (20Hz) yes.gif yes.gif no.gif no.gif
VBOX IISL yes.gif yes.gif no.gif no.gif
VBOX 3i yes.gif yes.gif no.gif no.gif
VBOX 3 R10G10 yes.gif yes.gif no.gif yes.gif
VBOX Speed Sensors
VBOX 5Hz Speed Sensor yes.gif no.gif no.gif no.gif
VBOX 10Hz Speed Sensor yes.gif yes.gif yes-with.gif no.gif
VBOX 20Hz Speed Sensor yes.gif yes.gif no.gif no.gif
VBOX 100Hz Speed Sensor yes.gif yes.gif no.gif yes.gif
Key: yes.gif = Compatible
  yes-with.gif = Compatible with upgrade    
  no.gif  = Not compatible

 

See also : How does GPS work?

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Last modified
11:52, 3 Jul 2015

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