Title :
Motion compensation with one-axis gyroscope and two-axis accelerometer for automotive SAR
Author :
Wu, Huaming ; Zwirello, Lukasz ; Li, Xuyang ; Reichardt, Lars ; Zwick, Thomas
Author_Institution :
Inst. fur Hochfrequenztech. und Elektron., Karlsruher Inst. fur Technol., Karlsruhe, Germany
Abstract :
On the basis of a previous one-axis accelerometer motion compensation system for automotive SAR, an updated scheme is presented in this paper, which contains a one-axis gyroscope and two-axis accelerometer. The requirement for extra Degrees of Freedom (DoF) leads to a new motion signal model. The complete procedure of calculating motion deviation in image display plane (IDP) from the raw roll angle rate and accelerations measured in body frame has been presented. The requirement for the Inertial Measurement Unit (IMU) has been analyzed quantitatively. According to the out-field measurements, the improved motion compensation system can cope with worse road conditions.
Keywords :
accelerometers; gyroscopes; inertial systems; microsensors; motion compensation; road vehicle radar; synthetic aperture radar; automotive SAR; extra degrees of freedom; image display plane; inertial measurement unit; motion compensation; motion deviation; motion signal model; one axis gyroscope; two axis accelerometer; Accelerometers; Automotive engineering; Azimuth; Gyroscopes; Motion compensation; Radar; Roads; Allan Variance; FMCW; Motion compensation; SAR; accelerometer; gyroscope;
Conference_Titel :
Microwave Conference (GeMIC), 2011 German
Conference_Location :
Darmstadt
Print_ISBN :
978-1-4244-9225-1
Electronic_ISBN :
978-3-9812668-3-2
