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Content Provider | IEEE Xplore Digital Library |
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Author | Yuanqin Wang Ruoyu Zhang Jiacai Hong Jing Sun |
Copyright Year | 2008 |
Description | Author affiliation: Center of Ultra-Precision Optoelectron. Instrum., Harbin Inst. of Technol., Harbin (Yuanqin Wang) || Beijing Aerosp. Control Center, Beijing (Jing Sun) || Acad. of Equip. Command & Technol., Beijing (Ruoyu Zhang; Jiacai Hong) |
Abstract | As for the projectile with slots at the bottom, the amplitude envelope of monochromatic Doppler radar echo contains the information of the flying attitude. Owning to the nonlinear movement of the projectile, the echo can be modeled as an amplitude modulation (AM) and frequency modulation (FM) signal. To extract the envelope of radar echo scattered from the slotted projectile and separate the amplitude from frequency modulation effectively, a hybrid method is proposed based on the Teager energy operator and wavelet transform. First, the echo model was presented and its characteristics were analyzed briefly. Next, the Teager nonlinear energy-tracking operator was introduced and exerted to the echo. However, the envelope obtained was seriously corrupted by the noise. Then stationary wavelet transform was adopted to suppress the noise. The comparison between the denoised envelope and the radar cross section measured in the static state validates the effectiveness of the hybrid technique. |
Starting Page | 450 |
Ending Page | 453 |
File Size | 458578 |
Page Count | 4 |
File Format | |
ISBN | 9781424423415 |
e-ISBN | 9781424423422 |
DOI | 10.1109/APCCAS.2008.4746057 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-11-30 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Wavelet transforms Projectiles Doppler radar Amplitude modulation Frequency modulation Radar scattering Radar signal processing Chirp modulation Fourier transforms Radar equipment |
Content Type | Text |
Resource Type | Article |
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