Results 21 to 30 of about 5,739,953 (290)
Sidelobe suppression for phase-coded pulse by mainlobe windowing
The Journal of Engineering, 2019 Mismatched filter is an important technique to suppress the sidelobes of phase-coded pulses. Here, the authors propose a mainlobe windowing procedure, by which a much lower sidelobe level can be obtained at a slightly signal-to-noise ratio loss. Based on
Jiacen Xu, Lixiang Ren, Haofei Wang
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Electronics Letters, 2023 In this paper, a single‐layer substrate‐integrated waveguide (SIW) filtering antenna with three independently controllable radiation nulls is presented. The antenna consists of a single‐layer SIW loaded with two radiation gaps, four metallization columns,
Jingwei Ma, Dongfang Zhou, Xian Wang
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The Journal of Engineering, 2019 The authors report a target separation detection and motion parameter estimation method based on the time-varying autoregressive (TVAR) model. The TVAR model is used to extract the instantaneous Doppler frequencies of multiple targets or scattering ...
Yaolin Zhang +3 more
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The Journal of Engineering, 2019 The most challenging task in phased array radar system is the mitigation or suppression of noise and interferences to enhance the useful signal in radar received signals.
Raafia Irfan +3 more
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Applicable STAP for moving FOD detection
The Journal of Engineering, 2019 Serious security risks and economic losses have increased rapidly under the threat of foreign object debris. Most detection methods employing optical devices are limited in severe weather for low visibility. This study proposes an applicable approach for
Xiaoqi Yang +3 more
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Improved morphological filtering method for interferograms
The Journal of Engineering, 2019 This study proposes an improved interferogram filtering method with mathematical morphology. The algorithm firstly converts the interferogram in cosine and sine parts to preserve the continuity of phases, then adopts the improved adaptive line structure ...
Bin Zhang, Shuang Li
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Robust Localization Based on Mixed-Norm Minimization Criterion
IEEE Access, 2022 This paper presents robust positioning methods that use range measurements to estimate location parameters. The existing maximum correntropy criterion-based localization algorithm uses only the $l_{2}$ norm minimization.
Chee-Hyun Park, Joon-Hyuk Chang
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Perceptual Defence and Filter Theory [PDF]
Nature, 1961 IT has been suggested by Broadbent1 that his general theory of selective processes in the human nervous system could give an account of the phenomenon of perceptual defence. His theory assumes that information entering the central nervous system can be thought of as arriving along certain ‘channels’ and that a ‘filter’ can select one (or occasionally ...
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Multi-target tracking of birds in complex low-altitude airspace based on GM_PHD filter
The Journal of Engineering, 2019 GM_PHD (Gaussian mixture of probability hypothesis density) cannot completely track multiple targets, such as the flying birds in the complex low-altitude airspace near the airport, due to the lack of the steps of birth detection, track extraction and ...
Tao Hong +4 more
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Applied SciencesGrayscale image processing is a key research area in the field of computer vision and image analysis, where image quality and visualization effects may be seriously damaged by high-density salt and pepper noise.
Ning Cao, Yupu Liu
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