A Reconnaissance Technology of UAV Up/Down-Link Based on ADRV9009 RF Transceiver

Low-cost commercial UAV has become a serious threat to airports, seaports and other important positions. It has the advantages of low observability, stealth in approaching and detection difficulty by radar and electro-optical sensors etc. The paper proposes a reconnaissance technique of UAV up/down-link communication signal based on AD9009 RF transceiver. Signal is received by 4-channel ADRV9009 RF transceiver and signal detection is conducted through delay self-correlation algorithm. 4-channel interferometer algorithm based on FFT phase solving-ambiguity is employed to achieve accurate DF of up/down-link. According to practical test, the proposal in this paper can achieve accurate DF to UAV targets within 4km.