Owner's manual


NAV440UserManual
7430‐0131‐01Rev.F
Page21
Figure2440SeriesSoftwareBlockDiagram
X / Y / Z Body
Accelerometers
6-
DOF Sensor Cluster
Senso
r
Calibration
Axes Rotation
GPS Data
Internal/External
Kalman Filter and DynamicState Model
Integration to 100 Hz
V
elocity, GPS
Position Output
Hard/Soft Iron
Calibration
UseMags
X / Y / Z
Magnetometers
NAV/AHRS only
IMU
-
Scaled Packets
(S0,S1,S2)
All Units
NAV/AHRS/VG/IMU
Gravity Reference
Turn Rate
(Internal
Computation)
Free Integrate
TurnSwitch
Threshold
UseGPS
Stationary Yaw
Lock
X / Y / Z Body
Rates
100Hz
Signal
Proc.
Chain
Extended Kalman Filter (EKF)
Drift Correction Module
V
G/AHRS
A
ngle
Packets
(A0,A1,A2)
NAV/AHRS/VG
NAV
-
Nav Packets
(N0,N1)
NAV/AHRS/VG
Integration to
Attitude
Unit Settings & Profile*
Communication Settings
Axes Orientation
LowPass Filtering
Free Integrate
UseGPS
UseMags
TurnSwitchThreshold
DynamicMotion
Restart On Overange
Dynamic Motion
Programmable BIT Alerts
Aiding Sensors
Built In Test
& Status
Data
A
vailabe to
User
Measurement
Data Available to
User (Fixed Rate
or Polled)
Status Packet (T0)
FunctionalBlockDiagram
Figure3belowillustratestheunitsettingandprofileblock,whichconfiguresthealgorithmtouserandapplication
specificneeds.Thisfeatureisoneofthemorepowerfulfeaturesinthe440architecture;itallowsthe440Seriesto
workinawiderangeofcommercialapplicationsbysettingspecificfunctions.