MAX-M10M-Integration manual
Platform Description
Pedestrian Applications with low acceleration and speed, e.g. how a pedestrian would move. Low
acceleration assumed.
Automotive Used for applications with equivalent dynamics to those of a passenger car. Low vertical
acceleration assumed.
At sea Recommended for applications at sea, with zero vertical velocity. Zero vertical velocity assumed.
Sea level assumed.
Airborne <1g Used for applications with a higher dynamic range and greater vertical acceleration than a
passenger car. No 2D position fixes supported.
Airborne <2g Recommended for typical airborne environments. No 2D position fixes supported.
Airborne <4g Only recommended for extremely dynamic environments. No 2D position fixes supported.
Wrist Only recommended for wrist-worn applications. Receiver will filter out arm motion.
Table 7: Dynamic platform models
Platform Max altitude [m] Max horizontal
velocity [m/s]
Max vertical velocity
[m/s]
Sanity check type Max
position
deviation
Portable 12000 310 50 Altitude and velocity Medium
Stationary 9000 10 6 Altitude and velocity Small
Pedestrian 9000 30 20 Altitude and velocity Small
Automotive 6000 100 15 Altitude and velocity Medium
At sea 500 25 5 Altitude and velocity Medium
Airborne <1g 80000 100 6400 Altitude Large
Airborne <2g 80000 250 10000 Altitude Large
Airborne <4g 80000 500 20000 Altitude Large
Wrist 9000 30 20 Altitude and velocity Medium
Table 8: Dynamic platform model details
Applying dynamic platform models designed for high acceleration systems (e.g. airborne <2g) can
result in a higher standard deviation in the reported position.
If a sanity check against a limit of the dynamic platform model fails, then the position solution
becomes invalid. Table 8 shows the types of sanity checks which are applied for a particular dynamic
platform model.
2.2.2 Navigation input filters
The navigation input filters in the CFG-NAVSPG-* configuration group control how the navigation
engine handles the input data that comes from the satellite signal.
Configuration item Description
CFG-NAVSPG-FIXMODE By default, the receiver calculates a 3D position fix if possible but reverts to 2D
position if necessary (auto 2D/3D). The receiver can be forced to only calculate 2D
(2D only) or 3D (3D only) positions.
CFG-NAVSPG-CONSTR_ALT, CFG-
NAVSPG-CONSTR_ALTVAR
The fixed altitude is used if fixMode is set to 2D only. A variance greater than zero
must also be supplied.
CFG-NAVSPG-INFIL_MINELEV Minimum elevation of a satellite above the horizon to be used in the navigation
solution. Low-elevation satellites may provide degraded accuracy, due to the long
signal path through the atmosphere.
CFG-NAVSPG-INFIL_MINSVS, CFG-
NAVSPG-INFIL_MAXSVS
Minimum and maximum number of satellites to use in the navigation solution.
There is an absolute maximum limit of 32 satellites that can be used for navigation.
UBX-22038241 - R02
2 Receiver configuration Page 15 of 92
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