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• W2528637557 abstract "Corner reflector is a common passive electronic countermeasure, which has the advantages of low cost, high effectiveness, etc. In this paper, the complex motion scattering point with translation, acceleration and vibration has been established in order to solve the problem of identifying ship and corner reflector, their micro Doppler features are analyzed, the different micro motion characteristics of ship an corner reflector are compared, then proposes a method to identify ship and corner reflector based on the difference of the characteristics of the micro Doppler, simulation data and real data demonstrates the effectiveness of this method. Corner reflector is a typical passive jamming in radar electronic countermeasure environment. The c orner reflector is disposed at a predetermined position or towed by ship to form strong echo. Corner re flector has the advantages of low cost, high effectiveness. It is easy to produce and equip, and can disturb a variety of radar system. Therefore, it has been widely used in electronic defensive c onfrontation. According to the open literature, the research on the characteristics of corner reflector is relatively abundant, but the method of anti-corner reflector is few. In (1), a Krogager polarimetric decomposition algorithm was proposed for the identification of ship and corner reflector. In (2), a variety of polarization decomposition-based methods are discussed, and the difference of polarimetric characteristics between ship and corner reflector is analyzed. In Literature (3), a corner reflector identific ation method based on the micro Doppler feature is proposed and their micro-motion characteristics are analyzed. However, in order to obtain the polarization information of the target, it is needed to increase the complexity of the radar system. On the other hand, due to the dynamics of sea clutter and the variation of its spectrum, the anti-corner reflector method based on micro Doppler features is also affected. Therefore, how to discriminate corner reflector interference from real maritime targets more effectively has become a recognized problem. The concept of micro motion and micro Doppler provides a new solution to this problem. The US Naval Research Laboratory V. C. Chen jog defined as a target or goal other than the part of the center of mass and rotational acceleration. Different forms of micro motion will produce different Doppler modulation on radar echo, which is called the micro Doppler effect, and the micro Doppler reflects the essential characteristics of the target motion. Micro motion feature is a unique performance form of target motion characteristics, micro Doppler features of different forms of exercise are obviously different, so can through the extraction of micro Doppler features to identify targets. The ship relative to the radar seeker has radial non-uniform linear motion, as translational motion and accelerated motion, at the same time because of the waves surging ship itself will have certain vibration, so the ship is composite motion translation, acceleration and vibration. Because the quality of ship volume is too large, the vibration is not obvious, so the fretting is not obvious; but corner reflector has light weight and small volume, the main form of exercise is vibration with the surging waves, so its micro characteristics is obvious. Therefore, it can be identify ship and corner reflector through the radar echo of the micro Doppler information." @default.
• W2528637557 created "2016-10-14" @default.
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• W2528637557 date "2016-01-01" @default.
• W2528637557 modified "2023-09-26" @default.
• W2528637557 title "Discrimination Method of Ship and Corner Reflector Based on Micro-Doppler Feature" @default.
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• W2528637557 doi "https://doi.org/10.2991/iccia-16.2016.92" @default.
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