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How Can You Get Better Accuracy from GPS?
differences in where your position gets plotted. So, there should be some
manner of solutions to improve the accuracy of GPS and get a better fix on
your position.
How Can You Get Better Accuracy from GPS?
There are a few methods of obtaining a more accurate position measurement
using GPS to try to overcome the error sources just described. The first of
these is a process referred to as Differential GPS (or DGPS). This method
uses a series of base stations at locations on the ground to provide a correction for GPS position determination. The base station is positioned at a place
FIGURE 4.8 The effect
of multipathing on the
GPS signal.
DGPS differential
GPS—a method using
a ground-based
correction in addition to
the satellite signals in
position determination.
Single path from
satellite to receiver
Multipath signal reaches receiver
later and causes errors
1
2
How Can You Get Better Accuracy from GPS?
differences in where your position gets plotted. So, there should be some
manner of solutions to improve the accuracy of GPS and get a better fix on
your position.
How Can You Get Better Accuracy from GPS?
There are a few methods of obtaining a more accurate position measurement
using GPS to try to overcome the error sources just described. The first of
these is a process referred to as Differential GPS (or DGPS). This method
uses a series of base stations at locations on the ground to provide a correction for GPS position determination. The base station is positioned at a place
FIGURE 4.8 The effect
of multipathing on the
GPS signal.
DGPS differential
GPS—a method using
a ground-based
correction in addition to
the satellite signals in
position determination.
Single path from
satellite to receiver
Multipath signal reaches receiver
later and causes errors
1
2