C-Nav 2050M, Руководство пользователя

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C-Nav2050 User Guide
tracked. The coordinates of the unknown location ca
be computed with sub-meter level precision by applyi
these corrections to the satellite data received by n
ng
the
value.
cessing strategy that
f a
of change of the distance
er.
e
for another
e position
se
and
in
) is the determination of the
position of a moving receiver such as one mounted on a
rover.
Dilution of Precision (DOP) is a class of measures of
the magnitude of error in GPS position fixes due to the
orientation of the GPS satellites with respect to the GPS
receiver. There are several DOP’s to measure different
components of the error. Note: this is a unit-less
See also PDOP.
Doppler Aiding is a signal pro
uses measured Doppler shifts to help the receiver
smoothly track the GPS signal, allowing more precise
velocity and position measurement.
Doppler Shift is the apparent change in frequency o
received signal due to the rate
between the transmitter and receiv
Double Difference between receivers and between
satellites is found by differencing the single differenc
for one satellite with the single difference
satellite where both single differences are from the
same epoch.
Dual-Frequency is a type of GPS receiver that uses
both L1 and L2 signals from GPS satellites. A dual-
frequency receiver can compute more precis
fixes over longer distances and under more adver
conditions because it compensates for ionospheric
delays.
Dynamic Mode when a GPS receiver operates in
dynamic mode, it assumes that it is in motion
certain algorithms for GPS position fixing are enabled
order to calculate a tighter position fix.
Dynamic Positioning (GPS
G-12