IMU Self-Calibration Using Factorization

Camera-IMU Calibration Using a Tilted Calibration Board

Zusammenfassung: Für mobile Einsatzkräfte ist die Kenntnis der eigenen Position eine große Hilfe, wenn sie an unbekannten Orten zeitkritische oder gefährliche Aufgaben erledigen sollen. Eine automatische Bestimmung der eigenen Position ist jedoch schwierig, wenn Funksignale abgeschattet sind und gängige Verfahren der Satellitenortung somit nicht verwendet werden können. Um hier Abhilfe zu schaf...

IMU-Camera Calibration: Observability Analysis

A Novel System-Level Calibration Method for Gimballed Platform IMU Using Optimal Estimation

An accurate calibration of inertial measurement unit errors is increasingly important as the inertial navigation system requirements become more stringent. Developing calibration methods that use as less as possible of IMU signals has 6-DOF gimballed IMU in space-stabilized mode is presented. It is considered as held stationary in the test location incorporating 15 di...

A Calibration Technique for a Redundant IMU

A calibration technique for a redundant inertial measurement unit (IMU) containing low-grade inertial sensors is proposed. In order to calibrate a redundant IMU that can detect and isolate faulty sensors, the fundamental coordinate frames in the IMU are defined and the IMU error is modeled based on the frames. Equations to estimate the error coefficients of the redundant IMU are formulated, and...

Online temporal calibration for camera-IMU systems: Theory and algorithms

When fusing visual and inertial measurements for motion estimation, each measurement’s sampling time must be precisely known. This requires knowledge of the time offset that inevitably exists between the two sensors’ data streams. The first contribution of this work is an online approach for estimating this time offset, by treating it as an additional state variable to be estimated along with a...