SF-2110 User Guide – Rev. A
the position reported by the reference station can b
used to correct the positions logged by the roving
receiver. Post-processing is performed after the user
e
d returns to the office, rather than
x,
dorandom Noise.
those messages sent to and
t
ctly
s.
distance from the
d
us factors cause
™) a startup mode that allows
collects the data an
in real time as data is logged, so it can use comple
calculations to achieve greater accuracy.
Precise code
see
P-code
.
PRN (Uppercase)
typically indicates a
GPS
satellite
number sequence from 1 – 32.
prn (Lower Case)
see Pseu
Protected code
see
P-code
.
Proprietary commands
received from GPS equipment produced by NavCom
Technology, Inc. own copyrighted binary language.
pseudo-random noise (prn)
a sequence of data tha
appears to be randomly distributed but can be exa
reproduced. Each GPS satellite transmits a unique
PRN in its signals. GPS receivers use PRNs to
identify and lock onto satellites and to compute their
pseudorange
Pseudorange
the apparent
reference station’s antenna to a satellite, calculate
by multiplying the time the signal takes to reach the
antenna by the speed of light (radio waves travel at
the speed of light). The actual distance, or range, is
not exactly the same because vario
errors in the measurement.
PVT
GPS information depicting Position, Velocity,
Time in the NCT proprietary message format.
Quick Start
(StarFire
instant <decimeter accuracy with received StarFire™
signals, allowing the convergence period to be
waived. The Quick Start (user input) position should
have an accuracy of better <decimeter to achieve
Glossary-88
Содержание SF-2110
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