Title :
Suitability of two INS trans-alignment methods in powered phase of launch vehicle
Author :
Rongjun Mu ; Chao Cheng ; Yuntian Li
Author_Institution :
Dept. of Astronaut., Harbin Inst. of Technol., Harbin, China
Abstract :
Take INS transfer alignment (trans-alignment) in powered phase of launch vehicle as example, suitability of two methods is compared in the paper. One is under launched point inertial coordinate, and the other is local geographical. Differences of state vectors choice, error-propagation, measurement model and influences of attitude maneuvers in powered phases under different coordinates are surveyed through theoretical analysis and simulation. Results validated that there are obvious differences between alignments under these two coordinates, and relative conclusions could provide important reference information for research on theories and design of engineer schemes.
Keywords :
inertial navigation; space vehicle navigation; INS trans-alignment methods; INS transfer alignment; attitude maneuvers; error-propagation; inertial navigation system; launch vehicle powered phase; launched point inertial coordinate; local geographical coordinate; measurement model; state vector choice; Accelerometers; Analytical models; Estimation; Mathematical model; Navigation; Position measurement; Vehicles; alignment; launched point inertial coordinate; local geographical coordinate; powered phase of launch vehicle;
Conference_Titel :
Mechatronics and Control (ICMC), 2014 International Conference on
Print_ISBN :
978-1-4799-2537-7
DOI :
10.1109/ICMC.2014.7231957
