Research on L-Band Interference Detection Based on UAV Aerial Monitoring System

GPS interference incidents of domestic civil aircraft have occurred frequently in recent years, seriously threatening flight safety. Accurate and efficient detection of GPS interference sources and elimination of harmful interference are essential to maintaining airwave order, protecting the rights and interests of civil aviation frequencies, and preventing unnecessary losses. The main frequency of the GPS navigation service is in the L-band, and this paper is based on the work requirements for searching for L-band interference. To fully understand the applicability of different types of monitoring tools, this paper starts with the scenario above and examines two types of surveillance means, namely the aerial monitoring platform and ground handheld devices. It completes the signal strength, directivity, monitoring environment and monitoring means through monitoring and direction finding of two signal sources. The role and advantages of different types of devices in the target scenario are examined, and the precautions and usage considerations are analyzed to provide suggestions and references for practical work.