Vector Sensor Reference Manual 50
3.4 COAST™ Technology
The Vector Sensor GPS technology incorporates the CSI Wireless COAST technology that allows
it to operate with old correction data for up to 30 to 40 minutes or more without significant
accuracy degradation. The feature’s performance is attributed to sophisticated algorithms that are
able to anticipate how errors change during a period of correction loss.
Traditional receiver technology would experience an increasing degradation with increasing age of
corrections, resulting in less than adequate performance over a shorter period of time. COAST
technology provides more consistent positioning during periods when signal loss occurs, thus
bridging the gap to when the signal is reacquired. This means that the Vector Sensor GPS is more
tolerant than competing products to loss of SBAS or externally input RTCM SC-104 corrections.
3.5 Default Parameters
This section outlines the default parameters of the Vector Sensor. The following tables provide
details on the firmware types, port settings, default NMEA messages, elevation mask, differential
age mask, default differential mode, and beacon receiver settings.
Note - Any changes you make to the Vector Sensor configuration need to be saved
with the $JSAVE NMEA command in order to be present for a subsequent power-
cycle.
Table 3-2 Firmware Applications
GPS Receiver Application 1 Application 2
Primary Attitude master firmware Attitude master firmware
Secondary Attitude secondary
firmware
Attitude secondary firmware
Table 3-3 Default Port Settings
Port Baud Rate Data Bits Parity Stop Bit Interface Level
A 19200 8 (fixed) None (fixed) 1 (fixed) RS-232C
B 19200 8 (fixed) None (fixed) 1 (fixed) RS-232C
Table 3-4 Default GPS NMEA Message Output
Port GPS NMEA Messages Update Rate
A GGA, GSV, VTG, ZDA, HDT, ROT 1 Hz
B GGA, GSV, VTG, ZDA, HDT, ROT 1 Hz
Table 3-5 Correction Age and Elevation Mask Defaults
Max DGPS Age Elevation Mask
1800 seconds 5°
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