Target position extraction based on instantaneous frequency estimation in a fixed-reticle seeker

Sung-Hyun Han; HyunKi Hong; SurngGabb Jahng; DongSun Seo; Jong Soo Choi

doi:10.1117/1.1287390

1 September 2000 Target position extraction based on instantaneous frequency estimation in a fixed-reticle seeker

Sung-Hyun Han, HyunKi Hong, SurngGabb Jahng, DongSun Seo, Jong Soo Choi

Optical Engineering, Vol. 39, Issue 9, (September 2000). https://doi.org/10.1117/1.1287390

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 estimate the IF for target position extraction, the proposed algorithm maps the multicomponent sFm signal into the time-frequency plane to examine 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.

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Sung-Hyun Han, HyunKi Hong, SurngGabb Jahng, DongSun Seo, and Jong Soo Choi "Target position extraction based on instantaneous frequency estimation in a fixed-reticle seeker," Optical Engineering 39(9), (1 September 2000). https://doi.org/10.1117/1.1287390

Published: 1 September 2000

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