Open AccessMicro‐Doppler of helicopter with different blade shapes
Author(s) -
Wu Jiaojiao,
Zuo Lei,
Li Ming
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.5390
Subject(s) - blade (archaeology) , helicopter rotor , rotor (electric) , acoustics , signal (programming language) , identification (biology) , frequency domain , time domain , doppler effect , engineering , computer science , structural engineering , mechanical engineering , physics , computer vision , botany , astronomy , biology , programming language
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.