u-blox ANTARIS 4, Руководство по системной интеграции

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your position is our focus
4.6.2 avigation Update Rate N
The ANTARIS
®
4 GPS Technology supports raw data and navigation update rates higher or lower than 1 update
per second.
Parameter Description
Measurement Period
Defines the time between two raw data (pseudo range) measurements.
Navigation Rate Defines the navigation update rate (see formula below).
Time Source
9
Defines whether the navigation update is aligned to GPS time or UTC.
Table 28: Navigation rate parameters
[ ]
[ ]
ms tPeriod Measuremen Rate Navigation
s UpdateRate Navigation
*
1000
/ 1
=
Note The update rate has a direct influence on the power consumption. The more fixes that are required,
the more CPU power and communication resources are required.
Note The higher the dynamics of the device holding a GPS system, the faster the position update shall be.
For most applications a 1Hz update rate would be sufficient.
4.6.3 Dynamic Platform Model
The ANTARIS
®
4 GPS Technology supports different dynamic platform models to adjust the navigation engine to
the expected environment. These platform settings can be changed dynamically without doing a power cycle or
reset. It allows a better interpretation of the measurements and hence provides a more accurate position output.
Setting the GPS receiver to an unsuitable platform model for the application environment may reduce the
receiver performance and position accuracy significantly.
9
This parameter has only an effect if the navigation update rate is less than 1 update per second (e.g. 1 update per 10s).
GPS Modules - System Integration Manual (SIM) (incl. Reference Design) Receiver Description
GPS.G4-MS4-05007-A1 Page 97