LORD 6253-4220, User Manual

Page: 25 / 75

3DM
®
-GX5-25
User Manual
To view and record Estimation outputs, see Basic Setup and Operations on page 10 .
Measurement Units Description
Filter Status
--
indicates the current state of the EF, such
as running or initializing
GPS Time weeks & seconds
GPS time corresponding to the calculated fil-
ter solution
Attitude
(Euler RPY) radians
Euler angles representation of
orientation expressed as roll, pitch and yaw
(RPY) with one-sigma uncertainly estim-
ation available
Attitude
(Matrix)
--
transformation matrix that describes
orientation with reference to the Earth
Centered Earth Fixed (ECEF
coordinate system
Attitude
(Quaternion)
--
unit quaternions representation of
orientation with one-sigma uncertainly estim-
ation available
Acceleration
(Linear)
meter/second
2
linear acceleration readings with reference
to either the sensor or vehicle frame (depend-
ing on settings), with bias and scale read-
ings, and one-sigma uncertainty estimations
also available.
Compensated
Angular Rate
radians/second
measured angular rate corrected using the
estimated gyroscope scale factor and bias,
with reference to either the sensor or vehicle
frame (depending on settings)
Gravity Vector meter/second
2
estimated WGS84 gravity vector with
reference to either the sensor or vehicle
frame (depending on settings)
WSG-84 Local
Gravity Magnitude
meter/second
2
local WGS84 gravity vector magnitude
Heading Update radians
heading used to update EF, calculated from
the selected heading source
(magnetometer, external, etc.) with
one-sigma uncertainty reading available
WMM (World Mag-
netic Model)
Gauss
WMM local magnitude, inclination and
declination based on GPS coordinates
Pressure Altitude meters (altitude) altitude estimate from barometric pressure
SAM
meters (altitude)pressure
(milli-bars)temperature (°C)
density (kg/m
3
)
altitude as derived from the U.S. Standard
Atmospheric Model (SAM) using the sensed
barometric pressure and air
temperature
Table 3 -
Estimation Filter Outputs
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