The invention relates to the technical field of unmanned aerial
vehicle detection, in particular to a monitoring and
early warning system and method for countering unmanned aerial
vehicle detection interference, and in the monitoring and
early warning system, a
signal receiving module independently receives electric signals of multiple unmanned aerial vehicles through array space stations; the abnormal
signal detection module performs
feature extraction, and detects abnormal signals by using frequency feature change and a
spectrum analysis technology; the
time difference of arrival detection module calculates the
time difference of arrival of each space
station to the abnormal
signal, and the
angle of arrival detection module analyzes and determines the
angle of arrival through a space
covariance matrix; the cross positioning module synthesizes the
time difference and the angle information to determine the position of the abnormal unmanned aerial vehicle; and the adaptive interference suppression module identifies the type of an abnormal unmanned aerial vehicle by using a
feature extraction result and a
machine learning model, selects a suppression strategy, controls an array space
station to align to the position of the abnormal unmanned aerial vehicle, realizes efficient suppression, and protects normal operation of a legal unmanned aerial vehicle and other aerial equipment at the same time.