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In-Flight Alignment Algorithm based on Non-Symmetric Unscented Transformation

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Authors
Kim, Kwangjin; Park, Chan Gook
Issue Date
2006-10
Citation
SICE-ICASE International Joint Conference 2006, Oct. 18-21, 2006, in Bexco, Busan, Korea
Keywords
In-flight alignmentINSEKFNSUTNSUKF
Abstract
This paper describes in-flight alignment algorithm using Non-Symmetric Unscented Kalman Filter (NSUKF)
for an SDINS aided by GPS system. To overcome the EKF limitation, the unscented transformation (UT) was
developed as a method to propagate mean and covariance information through nonlinear transformation. However, the
original UT has both the local sampling problem and the global sampling problem. To solve these problems, we
propose the Non-Symmetric Unscented Transformation (NSUT) and apply the NSUKF based on the NSUT to the IFA
with the large heading error. With a low cost MEMS IMU, the simulations are carried out at S-type trajectory for
analyzing the performance of the proposed method.
Language
English
URI
http://hdl.handle.net/10371/27373
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Others_기계항공공학부
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