Filter
Top Products
receiver choosessatellites to calculatea position fix.Using
information transmitted from three or more satellites, the
unit can calculate latitude and longitude (usually
abbreviated lat/lon); with four or more satellites, GPS
altitude can also be calculated.
GPS
System
Accuracy
The GPS allowsahigh degree of position fix accuracy.The
system can produce a position fix accurate to within less
than one meter. Due to concern for national security, the
U.S. Department of Defense introduces constant errors to
the transmitted satellite data to degrade the accuracy of the
system. Called Selective Availability, this practice limits
GPS position fix accuracy to about 100 meters, although
the relative position of the satellites to one another, their
elevation above the horizon, and other factors can also
affect accuracy of the position fix. Under optimal
conditions,accuracy can improve to within10meters.GPS
position fix accuracy is not affected by atmospheric
conditions.
GPS altitude is based on a mathematical model of the
sphere of theearth. Including intentionaldegradation,GPS
altitude may differ from barometric altitude by several
hundred feet.
Summary Unlike navigation aids providing a position fix with data
from land-based sources, the Apollo 360 can provide an
accurate position fix over land or sea anywhere in the
world. The unit includes an extensive database of useful
waypoint information and allows you to create up to 2,000
“customized” waypoints of your own. With the power of
this navigation device in the cockpit, you can easily
navigate with unsurpassed accuracy.
Introduction to GPS Navigation Apollo 360 GPS Receiver
1-2 P/N 560-0123-01