NDLI: A measurement method for Doppler frequency rate-of-change with coherent pulse train

Content Provider	IEEE Xplore Digital Library
Author	Chunlai Yu Minghao He Fang Wan Changxiao Chen
Copyright Year	2010
Description	Author affiliation: Air Force Radar Academy Wuhan, Hubei, China 430019 (Chunlai Yu; Minghao He; Fang Wan; Changxiao Chen)
Abstract	The information of target's acceleration is reflected in the Doppler frequency rate-of-change of the received radar signal. Limited in target's velocity, the information of Doppler frequency rate-of-change is very subtle. This information is quite difficult to measure precisely since it is very subtle and the pulse duration is very short. Therefore, a precise method is proposed to measure this information based on Morlet wavelet transform. Morlet wavelet transform has low signal-to-noise ratio (SNR) threshold. According as auto correlating the wavelet transform coefficient of radar signal, the Doppler Frequency rate-of-change is enhanced and phase ambiguity is unwrapped. By exploiting the coherent property of pulse train, the observation time is extended equivalently and so the measurement precision is improved greatly. The simulation study shows that this method has low SNR threshold and obtain the parameter measurement fast and accurately.
Starting Page	3729
Ending Page	3732
File Size	268569
Page Count	4
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5648201
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelet transforms Doppler Frequency Rate-of-Change Estimation Frequency estimation Doppler effect Morlet Wavelet Parameter Measurement Coherent Pulse Train Signal to noise ratio
Content Type	Text
Resource Type	Article

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