Innovative estimation method with measurement likelihood for all-accelerometer type inertial navigation system

Presents an innovative estimation scheme to solve the initial and divergent problems for an all-accelerometer inertial navigation system (INS). The proposed system uses six accelerometers mounted diagonally on each surface of a cubic. The system proposed herein exploits additional information involv...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 38; no. 1; pp. 339 - 346
Main Authors Lee, Sou-Chen, Huang, Yu-Chao
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2002
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Acceleration
Accelerometers
Aircraft components
Angular velocity
Electronic systems
Estimators
Gravity
Gyroscopes
Inertial navigation
Integral equations
Platforms
Position measurement
State estimation
Velocity measurement
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Summary:Presents an innovative estimation scheme to solve the initial and divergent problems for an all-accelerometer inertial navigation system (INS). The proposed system uses six accelerometers mounted diagonally on each surface of a cubic. The system proposed herein exploits additional information involving the gravity effect, allowing us to determine the angular velocity. It also provides an upper bound value to initiate the platform attitude. In addition, an estimation algorithm using the own-ship trajectory estimator providing a measurement likelihood is proposed. A simulation case for estimating position and velocity of the vehicle is investigated by this approach. Results confirm the effectiveness of this information infusing concept in obtaining a convergent INS state estimation.
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ISSN:0018-9251
1557-9603
DOI:10.1109/7.993257