ashtech Z-eurocard, Руководство по эксплуатации

Страница: 14 / 46

4 Z-Sensor and Z-Eurocard Operation Manual
Performance Specifications
One of the most important functions of the Z-receiver is providing real-time position
solutions with accuracy ranging from centimeter level to 100 meters. Table 1.2
summarizes the positioning modes and expected accuracy.
All accuracies were computed from multiple trials of live satellite data collected in the San Francisco
Bay area with receivers and survey grade antennas under average multipath conditions.
Receiver Options
Table 1.3 lists the available options. Each option is represented by a letter or number
presented in a certain order. You can verify the installed options by issuing the
following command to the receiver using an external handheld controller or PC, as
described in Z-Family Technical Reference Manual:
• $PASHQ,RID
The command will display the options on an external handheld controller or PC. For
example:
$PASHR,RID,UZ,30,UC00,BUEXMFT3JK,0A13*75
Table 1.2: Accuracy as Function of Mode
Positioning Mode
Typical Horizontal
Accuracy (2drms), 5
SVs, PDOP<4
Maximum
Update Rate
Maximum Operating
Range
Autonomous 100 meters with SA on 5 Hz (10 Hz
optional)
Anywhere
RTCM code differential 1.0 10 ppm 5 Hz (10 Hz
optional)
Several hundred
kilometers (depending
upon datalink)
Static (post-processed) 5mm + 1ppm 5 Hz (10 Hz
optional
Several hundred
kilometers (depending
upon satellite geometry)
Real-time carrier phase
differential in RTCM-
RTK format or DBEN
format 1.6cm +2ppm 5 Hz (10 Hz
optional
<15 kilometers
(depending upon datalink)