A transfer alignment method for airborne distributed POS with three-dimensional aircraft flexure angles  

作　　者：Xiaolin GONG Longjun CHEN Jiancheng FANG Gang LIU 

机构地区：[1]School of Instrumentation Science and Opto-electronics Engineering, Beihang University [2]Science and Technology on Inertial Laboratory, Beihang University

出　　处：《Science China(Information Sciences)》2018年第9期184-198,共15页中国科学（信息科学）（英文版）

基　　金：supported in part by National Natural Science Foundation of China(Grant Nos.61473020,61421063,61233005);National High Technology Research and Development Program of China(863 Program)(Grant Nos.2015AA124001,2015AA124002);International(Regional)Cooperation and Communication Project(Grant No.61661136007)

摘　　要：An airborne distributed position and orientation system（POS） appears to satisfy the requirement of multi-point motion parameters measurement. This relies on transfer alignment from a high precision master system to slave systems to obtain high accuracy motion parameters of all points. A key problem for a distributed POS involves determining a method to treat the aircraft flexure appropriately and achieve high precision transfer alignment. In this study, the effect of aircraft flexure on transfer alignment accuracy for airborne earth observation is first analyzed. Based on this, the error model of transfer alignment that considers three-dimensional flexure angles are established, and a transfer alignment based on parameter identification unscented Rauch-Tung-Striebel smoother（PIURTSS） is proposed. The simulations results show that the transfer alignment method based on PIURTSS effectively improves the estimation accuracy.An airborne distributed position and orientation system（POS） appears to satisfy the requirement of multi-point motion parameters measurement. This relies on transfer alignment from a high precision master system to slave systems to obtain high accuracy motion parameters of all points. A key problem for a distributed POS involves determining a method to treat the aircraft flexure appropriately and achieve high precision transfer alignment. In this study, the effect of aircraft flexure on transfer alignment accuracy for airborne earth observation is first analyzed. Based on this, the error model of transfer alignment that considers three-dimensional flexure angles are established, and a transfer alignment based on parameter identification unscented Rauch-Tung-Striebel smoother（PIURTSS） is proposed. The simulations results show that the transfer alignment method based on PIURTSS effectively improves the estimation accuracy.

关 键 词：position and orientation system distribution airborne earth observation transfer alignment unscented transformation Rauch-Tung-Striebel smoother 

分 类 号：V243.5[航空宇航科学与技术—飞行器设计]