2017(2):7-17.
Abstract:
Avian radar has been the critical tool for airport bird avoidance, bird-strike risk assessment of wind energy farms, bird observation and scientific research of bird nature reserves. Firstly, the main components of the avian radar are discussed. Secondly, the effects of the ground clutter, the volume clutter and the other undesired targets on the avian radar detection are analyzed, and then the traditional clutter suppression methods and coherent radar clutter suppression technologies are introduced, as well as the data processing technologies of target detection, target tracking, target display, data recording and radar networking applied in advanced avian radars. Thirdly, the main indicators of target trajectory, echo size, echo strength, signal fluctuations, flight speed and altitude obtained by the avian radars are provided, reflecting the target characteristics of flying birds. Finally, in addition to the description of four typical avian radar systems at home and abroad, some thoughts and feasible suggestions are proposed for the development of avian radar technology.