Method and equipment for detecting and receiving UAV frequency hopping remote control signal based on array antenna

Abstract

The invention relates to an unmanned aerial vehicle frequency hopping remote control signal detection method and device based on an array antenna, and belongs to the anti-unmanned aerial vehicle technical field. The method includes: converting a time domain receiving signal of the unmanned aerial vehicle frequency hopping remote control signal into a time frequency domain to enrich signal characteristics; secondly, classifying all time-frequency points according to the spatial domain characteristics of the signals to obtain a single-source point set of each time-frequency domain signal, estimating an expected signal delay vector of the time-frequency domain signal by utilizing the single-source point set, and constructing an interference and noise covariance matrix; And finally, carrying out frequency hopping signal beam forming according to the obtained expected signal steering vector and the interference and noise covariance matrix, so that spatial filtering of the remote control signal is effectively realized, the signal-to-noise ratio is improved, and subsequent feature extraction and target identification are facilitated.

Description

technical field [0001] The invention belongs to the field of anti-UAV technology, and in particular relates to a method and equipment for detecting and receiving UAV frequency-hopping remote control signals based on an array antenna. Background technique [0002] Anti-drone technology includes the reconnaissance of drones and the reconnaissance of drone operators (that is, "black hands"). Among them, the reconnaissance of "black hands" is more effective and direct, and the reconnaissance of "black hands" is The reconnaissance of the FM remote control signal (referred to as the remote control signal) of the UAV includes two aspects: direction finding and positioning and signal detection. On the one hand, the position of the "black hand" can be found through direction finding and positioning, so as to arrest him; , The characteristics and rules of the remote control signal can be extracted by using signal detection, so as to identify the "black hand" and send deceptive signals...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an array antenna-based UAV frequency hopping remote control signal detection method and equipment, which is used to solve the problem of inaccurate signal incident angle measurement and the existence of array elements in the existing UAV frequency hopping remote control signal detection method. Under the condition of position error, the effective detection and reception of remote control signals cannot be realized

Images