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21 December 2023 A local enhancement method to distinguish target direction
Zheng Zhang, Zhipeng Liu
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Proceedings Volume 12970, Fourth International Conference on Signal Processing and Computer Science (SPCS 2023); 129701R (2023) https://doi.org/10.1117/12.3012120
Event: Fourth International Conference on Signal Processing and Computer Science (SPCS 2023), 2023, Guilin, China
Abstract
In order to solve the problem that the peak of the weak target in the azimuthal energy spectrum is lower than the background when using the passive sonar systems to detect targets, and it is unable to identify the target azimuth visually and quickly, a post-processing method that can identify the target azimuth and perform local enhancement is proposed in this paper. This method uses background equalization technology to compress the dynamic range of the energy spectrum. The background threshold of energy spectrum after normalization processing is estimated, and target azimuth is extracted. Combined with the background threshold, the correction coefficient is constructed in segments to achieve the local enhancement at the target azimuth. This method is able to distinguish targets and background visually and quickly, has the function of highlighting and identifying the azimuth of the target based on simulation and measured data.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Zheng Zhang and Zhipeng Liu "A local enhancement method to distinguish target direction", Proc. SPIE 12970, Fourth International Conference on Signal Processing and Computer Science (SPCS 2023), 129701R (21 December 2023); https://doi.org/10.1117/12.3012120
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KEYWORDS
Target detection
Target recognition
Background noise
Detection and tracking algorithms
Passive sonar
Spatial filtering
Windows
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