Using frequency approach to time-variant filtering for processing of navigation information
Alexei V. Loparev, О. А. Степанов, I. B. Chelpanov · Gyroscopy and Navigation · 2012
The paper considers a procedure for linear time-variant filtering used in navigation data processing. The proposed procedure is based on studying and simplifying the valid signal and measurement error models in the frequency domain. The application of this procedure to synthesis of autonomous and corrected gyro verticals is illustrated by examples. Comparative analysis of the accuracy in transient state is performed for time-invariant and time-variant filtering.