TY - JOUR
T1 - Miss Distance Estimation Based on Scattering Center Model Using Time-Frequency Analysis
AU - Guo, Kun Yi
AU - Qu, Quan You
AU - Feng, Ai Xi
AU - Sheng, Xin Qing
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016
Y1 - 2016
N2 - In the traditional miss distance (MD) estimation, Doppler frequencies of radar echoes are used to estimate MD by curve fitting, which is based on the signal model of a single scattering center. Actually, scattering responses of an extended object are contributed by a series of scattering centers. Moreover, the attributes (i.e., amplitudes and locations) of scattering centers of different types change with the aspect angles of the measuring radar. The multiple scattering centers and their different attributes make the characteristics of Doppler frequencies quite complex, and subject the traditional MD estimation method to serious error. To tackle this problem, a parametric scattering center model is built to precisely characterize different types of scattering centers, and the primary characteristics of Doppler frequencies corresponding to various scattering centers shown in time-frequency representation (TFR) are used to estimate MD by image fitting. The performance of this method has been validated, and results show that this method is of high accuracy even in low signal-to-noise ratio (SNR).
AB - In the traditional miss distance (MD) estimation, Doppler frequencies of radar echoes are used to estimate MD by curve fitting, which is based on the signal model of a single scattering center. Actually, scattering responses of an extended object are contributed by a series of scattering centers. Moreover, the attributes (i.e., amplitudes and locations) of scattering centers of different types change with the aspect angles of the measuring radar. The multiple scattering centers and their different attributes make the characteristics of Doppler frequencies quite complex, and subject the traditional MD estimation method to serious error. To tackle this problem, a parametric scattering center model is built to precisely characterize different types of scattering centers, and the primary characteristics of Doppler frequencies corresponding to various scattering centers shown in time-frequency representation (TFR) are used to estimate MD by image fitting. The performance of this method has been validated, and results show that this method is of high accuracy even in low signal-to-noise ratio (SNR).
KW - Genetic algorithm
KW - miss distance estimation
KW - scattering center model
KW - time-frequency analysis
UR - http://www.scopus.com/inward/record.url?scp=84963791969&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2015.2490088
DO - 10.1109/LAWP.2015.2490088
M3 - Article
AN - SCOPUS:84963791969
SN - 1536-1225
VL - 15
SP - 1012
EP - 1015
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 7296594
ER -