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ENABLING L-BAND
The ASSIGNLBAND command allows you to set OmniSTAR or CDGPS base station communication parameters. It should include a relevant frequency and data rate. The frequency assignment can be made in Hz or KHz. For example:
Hz: assignlband omnistar 1536782000 1200
KHz: assignlband omnistar 1536782 1200
A value entered in Hz is rounded to the nearest 500 Hz.
To confirm you are tracking an
lbandstata com1 0 43.5 finesteering 1295 149951.671 00000000 976f 34461;
1547546977 46.18 4541.0 0.00 00c2 00f0 ...
To specify the correction source, use the PSRDIFFSOURCE command as shown in the examples below:
PSRDIFFSOURCE OMNISSTAR or,
PSRDIFFSOURCE CDGPS
otherwise it is left at the default AUTOMATIC.
Refer to the OEMV Family Firmware Reference Manual for more on individual
REAL-TIME KINEMATIC (RTK) POSITIONING
Corrections can be transmitted from a base station to a rover station to improve position accuracy. The base station is the GNSS receiver which is acting as the stationary reference. It has a known position and transmits correction messages to the rover station. The rover station is the GNSS receiver which does not know its exact position and can receive correction messages from a base station to calculate differential GNSS positions.
In most cases, provide a data link between the base station and rover station (two NovAtel receivers) in order to receive corrections. SBAS and
Once your base and rover are set up, you can configure them for RTCA, RTCM, RTCMV3, CMR+ or CMR corrections. Below is an RTCM example (replace the latitude, longitude and height coordinates shown with those of your base):
Base
interfacemode com2 none rtcm off
fix position 51.11358042
log com2 rtcm3 ontime 10 log com2 rtcm22 ontime 10 1 log com2 rtcm1819 ontime 1 log com2 rtcm1 ontime 5
Rover
interfacemode com2 rtcm none off
1. Refer to the GPGST log’s usage box in the OEMV Firmware Reference Manual for a definition of RMS and other statistics.
2.For more base/rover configurations, search the key words “rover base” on our Knowledge Database at: http://www.novatel.com/support/knowledgedb.htm
EXTERNAL OSCILLATOR
For certain applications requiring greater precision than what is possible using the
To install, connect a cable from the external oscillator to the DL- V3 port labelled EXT OSC. The receiver does not have to be powered down during this procedure.
Once the external oscillator has been installed, issue the EXTERNALCLOCK command to define the clock model (for
example, cesium, rubidium or ovenized crystal). If the input clock rate is 5 MHz, you must issue the EXTERNALCLOCK command to change the 10 MHz default rate.
POST PROCESSING
http://www.novatel.com/products/waypoint_pps.htm
MOUNTING BRACKET
A mounting kit is provided with the
QUESTIONS OR COMMENTS
If you have any questions or comments regarding your
Email: support@novatel.com
Web: www.novatel.com
Phone:
Fax:
Quick Start Guide: |
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Rev 4 | 2009/03/24 |