Spectra Precision Survey Pro 3.80 Recon GPS Reference Manual - Manual (Page 21)

Survey Menu – RTK
21
•
Code : we are receiving a code differential solution (precision
is about 1 to 10 meters).
•
Float : we are receiving a carrier phase differential solution
with float ambiguities (precision is typically within 0.1_m to
0.5_m).
•
Fixed : we are receiving a carrier phase differential solution
with fixed ambiguities (precision is typically within 15_mm
for single-frequency receivers and 5_mm for dual-frequency
receivers).
H Precision : displays the root mean squared (RMS) error of the
horizontal solution reported by the receiver. It is displayed in project
units.
V Precision : displays the RMS error of the vertical solution reported
by the receiver. It is displayed in project units.
HDOP : displays the Horizontal Dilution of Precision. It is a measure
of the geometrical quality of the solution. DOP has no units and
lower numbers indicate better solution geometry.
VDOP : displays the Vertical Dilution of Precision. It is a measure of
the geometrical quality of the solution.
PDOP : displays the Position Dilution of Precision. It is a combination
of HDOP, VDOP and Time Dilution of Precision. It will always be
larger than HDOP and VDOP.