orb:c94-m8p

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orb:c94-m8p [2016/07/08 18:39]
sven [Introduction to C94-M8P]
orb:c94-m8p [2016/08/15 13:41] (current)
sam [Rover Coordinates]
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-====== C94-M8P-2 Application Board (dGPS) ======+====== Introduction to C94-M8P ====== 
 +One of the two boards is configured as a "Base Station" and the other one is configured as a "Rover". Some parameters will be applied to both of them in order to get the best position correction achievable. 
 + 
 +===== C94-M8P-2 Application Board (dGPS) =====
  
   * **Pay special attention to ESD protection!**   * **Pay special attention to ESD protection!**
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   * UBX-CFG "TMODE3" sets the Minimum Observation Time and Required Position Accuracy. If BOTH conditions are met, survey-in ends!    * UBX-CFG "TMODE3" sets the Minimum Observation Time and Required Position Accuracy. If BOTH conditions are met, survey-in ends! 
  
-==== First test (5.7.16) ==== 
-  * Time for base station survey-in [10cm accuracy; minimum time: 900s]: 3600 s effective 
- 
-Screenshot shows test with manual displacement. Base station was surveyed-in but turned off again for some time before this test. 
-{{:orb:dgps_test1.png?2000|}} 
- 
-===== Introduction to C94-M8P ===== 
-One of the two boards is configured as a "Base Station" and the other one is configured as a "Rover". Some parameters will be applied to both of them in order to get the best position correction achievable. 
  
-=== Configure Base Station ===+==== Configure Base Station ====
 there are three steps to configure the Base Station.  there are three steps to configure the Base Station. 
   - Set the position, by having the Base Station do a Survey-in or pre-surveyed coordinate   - Set the position, by having the Base Station do a Survey-in or pre-surveyed coordinate
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 Before you get in the configuration, go to https://www.u-blox.com/en/product/c94-m8p and download the u-center beta extension and be sure installing also the USB driver.  Before you get in the configuration, go to https://www.u-blox.com/en/product/c94-m8p and download the u-center beta extension and be sure installing also the USB driver. 
-Once the software started, click on the arrow right to the connect button (see image below) and click on the correct com port. The icon should be green after this step. The next image shows what it should looks like. +Once the software started, click on the arrow right to the connect button (see image below) and click on the correct com port. The icon should be green after this step. The next image shows what it should looks like (After a while)
-{{ :orb:ucenter1.png?2000 |}}+{{ :orb:ucenter1.png?3000 |}}
  
 === Base Station Coordinates === === Base Station Coordinates ===
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   * PRT   * PRT
       * Target UART1       * Target UART1
-      * Protocol in none +      * Protocol in NMEA+UBX 
-      * Protocol out RTCM3+      * Protocol out NMEA+UBX+RTCM3
   * RST   * RST
-      *  Coldstart+      *  Hotstart
   * TMODE3   * TMODE3
       * Mode Survey-in       * Mode Survey-in
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 Those reason push us to set the DGNSS parameter to fixed RTK. Those reason push us to set the DGNSS parameter to fixed RTK.
  
-=== Rover Coordinates ===+==== Rover Coordinates ====
 To connect to the rover GPS do the same thing as for the Base Station To connect to the rover GPS do the same thing as for the Base Station
  
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         * Target UART1         * Target UART1
         * Protocol in RTCM3         * Protocol in RTCM3
-        * Protocol out none+        * Protocol out NMEA (for SBC)
     * RST     * RST
         *  Coldstart         *  Coldstart
 +    * UBX-CFG-ODO
 +        * enable low speed COG
 +        * output speed
 +        * output heading
 +
 === How do I know when the survey-in stop === === How do I know when the survey-in stop ===
 +
 Click on the left button described above, then navigate to UBX -> NAV -> SVIN Click on the left button described above, then navigate to UBX -> NAV -> SVIN
-{{ :orb:ucenter3.png?200|}}+On this page, you will be able to check survey-in state. 
 +<note important>Remember that the page don't refresh by itself. To enable automatic refresh, right click on SVIN (in the left tree) and select "enable message"</note>{{ :orb:ucenter3.png?300 |}} 
 + 
 +==== First test (5.7.16) ==== 
 +  * Time for base station survey-in [10cm accuracy; minimum time: 900s]: 3600 s effective 
 + 
 +Screenshot shows test with manual displacement. Base station was surveyed-in but turned off again for some time before this test. 
 +{{:orb:dgps_test1.png?2000|}} 
 ===== References ===== ===== References =====
   - https://www.u-blox.com/sites/default/files/C94-M8P-AppBoard_UserGuide_(UBX-15031066).pdf   - https://www.u-blox.com/sites/default/files/C94-M8P-AppBoard_UserGuide_(UBX-15031066).pdf
   - https://www.u-blox.com/sites/default/files/C94-M8P-Appboard-Setup_Presentation_(UBX-16009772).pdf   - https://www.u-blox.com/sites/default/files/C94-M8P-Appboard-Setup_Presentation_(UBX-16009772).pdf
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