INTRODUCTION
The FMS-3000 provides the capability of en route, terminal, and
non-precision approach navigation. The system contains an advanced
GPS receiver and processes the transmissions from multiple GPS
satellites simultaneously to calculate navigation solutions based on
information from all satellites that are in view. A minimum of four
satellites with acceptable geometry, or three satellites plus calibrated
barometric altitude, are required in order to calculate a navigation
solution. With additional satellites, the system can improve the fault
tolerance and accuracy of the navigation solution and provide Receiver
Autonomous Integrity Monitoring (RAIM) to detect satellite failures. The
system also provides predictive RAIM, which is used to determine
whether the satellite geometry at the destination airport will be sufficient
to support approach at the planned time of arrival. The computed
GPS position, velocity and time are input to the Flight Management
function, which integrates this data into the flight plan based navigation
solution. The FMS also receives data from the AHS, ADC, DME and
VOR. The FMS provides necessary controls for all input sensors, when
appropriate.
The FMS can be initialized, waypoints chosen, and destination selected
by a variety of pilot-friendly means. SIDs, STARs, and Airways are
accommodated. A great circle route is calculated between waypoints
for en route lateral navigation, and roll steering is provided to the
Flight Control System (FCS). A sophisticated interface with the FCS
allows the FMS VNAV function to select various FCS vertical modes
of navigation. The FMS provides vertical steering when appropriate.
The FMS interfaces with the flight displays to provide conventional
navigation information and state-of-the-art map presentation.