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2018-07-21
Analysis of Phase Noise Influence on Micro-Doppler Feature Extraction of Vibrating Target
By
Progress In Electromagnetics Research C, Vol. 85, 177-190, 2018
Abstract
It is generally considered that increasing the carrier frequency of radar is an important way to improve the precision of micro-motion measurement. However, the increase of the center frequency may raise the phase noise intensity of the radar transmitting signals and make the extraction more difficult; therefore, it is particularly necessary to study the influence of phase noises on the extraction of micro-motion characteristics. In this paper, a specific study about the effect of phase noises on the extraction of m-D features is carried out. The effect of phase noises on the extraction performance of the m-D features is evaluated based on the parameter of MSCR. The results of simulation experiments indicate that increasing the carrier frequency will not improve the extraction performance of micro-motion features in the case of using both the classic time-frequency analysis method and the new developed sinusoidal frequency modulation Fourier transform (SFMFT) method. Increasing the frequency of the vibration will not help to improve the extraction performance of the m-D features when using the SFMFT method. However, increasing the vibration frequency can have an improvement effect through the time-frequency method with the increase of Doppler frequency. At last the empirical formula is put forward based on which the exact value of the estimation accuracy can be calculated.
Citation
Zihao Liu Bo Peng Xiang Li , "Analysis of Phase Noise Influence on Micro-Doppler Feature Extraction of Vibrating Target," Progress In Electromagnetics Research C, Vol. 85, 177-190, 2018.
doi:10.2528/PIERC18032101
http://www.jpier.org/PIERC/pier.php?paper=18032101
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