A GPS/SINU Design for Motion Sensing and Compensation Using Extended Kalman Filter for Airborne UAVSAR
Synthetic Aperture Radar(SAR)is classified as one of the high resolution imaging system in microwave remote sensing.The operational elements of SAR,unlike optical sensing,consist of a large number of frequency-modulated received echoes which must be acquired in real-time.Recently,airborne unmanned aerial vehicle(UAV)was commonly appeared in SAR applications for data acquisition purposes.Assumption was made on the nominal trajectory of the airborne UAV to be straight line path.In reality,however,such assumption will not hold due to atmosphere turbulence and UAVs motion error,which results in severe degradation in output images quality.In this paper,a global positioning system(GPS)aided strapdown inertial navigation unit(SINU)was used to sense and compensate the motion errors of the airborne UAVSAR.The GPS/SINU was mounted together with the airborne UAVSAR.The integration of GPS/SINU was modeled using extended Kalman filter.The results indicate the applicability and effectiveness of the proposed design.
C.H.Lim C.S.Lim W.Q.Tan T.S.Lim V.C.Koo
Faculty of Engineering and Technology,Multimedia University Jalan Ayer Keroh Lama,Melaka 75450,Malaysia
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
1253-1257
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）