Abstract
To extract a precise target position in the presence of infrared countermeasures and significant noise, we propose a new algorithm based on the instantaneous frequency (IF) estimation of the sinusoidal frequency modulation (SFM) signals for a fixed-reticle seeker. To esti- mate the IF for target position extraction, the proposed algorithm maps the multicomponent SFM signal into the time-frequency plane to exam- ine its time-frequency distribution, and then applies the Hough transform. The simulation results show that the proposed algorithm can extract the target position efficiently in the presence of flare countermeasures and noise. © 2000 Society of Photo-Optical Instrumentation Engineers. (S0091-3286(00)00209-9)
Published Version
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