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access icon free Micro-Doppler of helicopter with different blade shapes

© The Institution of Engineering and Technology
Received 16/05/2018, Published 17/07/2018
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Micro-Doppler of a rotor is of great importance in classifying and identifying a helicopter. In the past, the blade of a rotor was modelled as a rod. However, the blade has different tip shapes, which can be supplementary information for helicopter identification. The signal model of blades with three different tip types is derived. By analysing the theoretical and experimental data in the time–frequency domain, the potential of the tip shape in helicopter identification is shown.

Inspec keywords: rotors (mechanical); signal processing; blades; helicopters; Doppler radar

Other keywords: helicopter microDoppler; helicopter classification; blade shapes; tip shape; time-frequency domain; tip types; rotor blade; signal model; helicopter identification

Subjects: Signal processing and detection; Radar equipment, systems and applications; Mechanical components; Acoustic properties (mechanical engineering)

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2018.5390
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