Sensor selection. Inertial Measurement Unit.

Understanding When to Use the Barometer

Purpose: To understand in what cases the barometer should be turned ON and what cases it should be OFF.
Last Updated: June 2020

Case 1

In completely GPS-Denied environment, the pressure sensor should be set to primary altitude sensor as shown below.

Case 2

In general, if there is frequent GPS availability, the pressure sensor should be used as a secondary altitude sensor.

Case 3

If the pressure of environment does not reflect altitude of the carrier object (i.e. the INS is inside a submarine underwater), then the pressure sensor should be disabled.

For any additional questions, please email

Website maintenance has been scheduled for Sunday, April 2 from 7 am to 9 pm EDT.
The resource may be unavailable at this time. Please accept our apologies for any inconvenience.