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      What is the Initial Alignment and How Does it Improve the Device's Performance?

      Posted by Luke Wilson on Aug 20, 2020 11:52:05 AM

      Purpose: To understand how the initial alignment improves the performance of the INS.

      Last Updated: June 2020


      What is it?

      During the Initial Alignment time, the INS estimates biases of the gyroscopes by measuring the current condition it is in (which should be static). The device can use these estimated biases in the Kalman Filter to help the device recognize the difference between when the unit is moving and when the gyroscopes are drifting. As a result, the initial alignment helps to improve the INS dynamic accuracy.

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      Topics: Bias, Increase, Alignment, Performance, Initial, Gyroscope, Gyro, Estimation

      IMU-P Characteristic Determination Method Used for ARW, VRW and Bias Instability for Gyroscopes and Accelerometers in IMU-P

      Posted by Will Dillingham on Aug 19, 2020 3:18:48 PM

      Purpose: The purpose of this Knowledge Base document is to inform end-users of the methods that are used by Inertial Labs for determining Angular Random Walk, Velocity Random Walk and Bias Instability for the MEMS-based Accelerometers and Gyroscopes used by Inertial Labs in the IMU-P.

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      Topics: IMU-P, Velocity, ARW, Angular, Random, Walk, VRW, Bias, Instability

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