Radar Detection of Hovering Helicopter

In this paper,the characteristics of the radar echo of helicopter rotor blade are analyzed firstly,then the possibility to detect a hovering helicopter by the main rotor echo(MRE) is analyzed.As a result,a multi-scanning-periods accumulate detection(MSPAD) strategy for detecting hovering helicopter against ground clutter is proposed,which is the same with all kinds of helicopter,and the factors that may influence the detection performance are discussed.