Ensure High Accuracy with the Baseline Processor

If all of requirements listed in the table below are met while performing and processing a static GNSS survey, the baseline processor in Trimble Business Center Version 2.40 or higher can provide accuracy as high as:

0.003 + 0.1 ppm (horizontal)
0.005 + 0.4 ppm (vertical)

Property	Requirement for highest accuracy
In the field...
Occupation time	10 minutes + 2 minutes per kilometer
Measurement rate	10 seconds, or more frequent
Space vehicles (SVs)	5 minimum
Position dilution of precision (PDOP)	<2 for minimum PDOP <15 for maximum PDOP
Geomagnetic K-index	3 maximum (see http://www.swpc.noaa.gov/alerts/k-index.html)
Environment	Ensure the following: Minimum number of cycle slips Low RF interference Low multipath environment Minimum number of sky obstructions Similar tropospheric conditions at both stations
Receivers/antennas	Ensure the following: Dual-frequency receivers/antennas Geodetic antennas Latest firmware installed Equipment in working condition per manufacturer recommendations Precise height measurements with stable tripods or mounts
In the office...	(Select in Project Settings > Baseline Processing.)
Processing interval	Select "Use all data".
Ephemeris type	Select "Precise".
Antenna model	Select "US National Geodetic Survey Calibration" or the equipment manufacturer's antenna model.