Operation | Chapter 4 | |
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4.3Data Requests
Data may be requested for output by the receiver for display or logging purposes. The list of data request commands and data messages is detailed in the L1 GPS Firmware Reference Manual.
4.4Configurable Parameters
Several parameters of the receiver and the base station are configurable and therefore, you must define them prior to operation.
Your receiver must be a BASE model to act as a base station. A list of models is in Appendix A of the L1 GPS Firmware Reference Manual and in our Price List available from the Sales side menu of our website at www.novatel.com.
4.4.1Mask Angle
The mask angle is defined as the minimum satellite elevation angle (in degrees) above which any given satellite must be in order for it to be used in the GPS position solution. Low satellites usually do not yield accurate measurements due to weak signal reception and possible multipath. Typical mask angle values range from 5°- 10°, depending on the receiver’s location. This value is programmable using command Message ID# 81, Set Mask Angle.
4.4.2GPS Antenna Position
For the base station, it is imperative to fix the position. This can be done using either the
You can also set the
4.5Receiver States
4.5.1Non-Operational State
The receiver’s
4.5.2Operational States
The receiver has 6 operating modes:
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•Initialization
•Acquisition
•Navigation
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•Fault
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