Public security and judicial activities often involve the streets and alleys of cities, various public places (such as squares, stations, stadiums, etc.), as well as specific judicial sites like prisons and courts. These areas are densely populated, with numerous buildings and a complex electromagnetic environment where there are a large number of communication signals and interferences from electronic devices. This makes it more difficult to detect and identify drone signals. Moreover, anti-drone operations need to fully consider avoiding impacts on the surrounding people and the normal order of law enforcement and the judiciary.