DocumentCode :
641871
Title :
Quaternion based micro-Doppler simulation of ballistic targets
Author :
Sun, Y.J. ; Fu, Yi-Shiang ; Cheng, Zhongyuan ; Cheng, B.L.
Author_Institution :
CASIC, Beijing Inst. of Radio Meas., Beijing, China
fYear :
2013
fDate :
14-16 April 2013
Firstpage :
1
Lastpage :
5
Abstract :
As a key issue of ballistic target micro-Doppler feature research, the micro-motion kinetics modeling technique usually bases on Euler angles, Euler-Rodrigue formula and homogeneous coordinates those have some problems such as “Gimbal lock” and singularity which don´t happen with quaternion. Quaternion is more intuitive and provides for easier rotation than matrices. It allows us use 4 values instead of the 9 of the corresponding matrix. Consequently, the Quaternion based precession and wobbling micro-Doppler frequency expressions of ballistic targets are derived for the sake of simplifying the calculation of target micro-Doppler and reduce matrix operations. The simulation results prove that the micro-Doppler signature based on quaternion is valid. Furthermore, the warhead has different micro-Doppler signature with that of the decoy. By means of different micromotion producing different micro-Doppler signature, the corresponding micro-Doppler signature can make ballistic targets recognition possible under the assumption that decoys motion without attitude control module.
Keywords :
Doppler radar; ballistics; target tracking; Euler angles; Euler-Rodrigue formula; Gimbal lock; ballistic targets recognition; homogeneous coordinates; matrix operations; microDoppler feature research; microDoppler frequency expressions; microDoppler signature; micromotion kinetics modeling technique; quaternion based microDoppler simulation; warhead; Ballistic Targets; Micro-Doppler; Quaternion; precession; target recognition;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Radar Conference 2013, IET International
Conference_Location :
Xi´an
Electronic_ISBN :
978-1-84919-603-1
Type :
conf
DOI :
10.1049/cp.2013.0459
Filename :
6624623
Link To Document :
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