Universal electromagnetic signal automatic searching method

Abstract

The invention relates to a universal electromagnetic signal automatic searching method. The method mainly comprises the following steps of: (1) performing frequency-domain scanning and threshold value detection to form a list of signals to be searched; (2) performing frequency-domain feature extraction on the signals in the list of the signals to be searched, and matching the extracted frequency-domain features with the set frequency-domain features of the signals to be searched; (3) identifying modulation parameters of the signals of which the frequency-domain features are matched with the set frequency-domain features of the signals to be searched, and matching the modulation parameters with the set modulation parameters of the signals to be searched; and (4) performing demodulation processing and time-domain feature parameter extraction on the signals of which the modulation parameters are matched with the set modulation parameters of the signals to be searched, and then matching the time-domain features with the set time-domain features of the signals to be searched; and if the similarity is greater than a set similarity coefficient, then determining that the current processed signal is a target signal to be searched. According to the method provided by the invention, electromagnetic signals with certain specific features can be searched automatically without human intervention; the intercept probability of the signals can be improved remarkably; and the work efficiency of detection personnel can be improved greatly.

Description

technical field [0001] The invention relates to the fields of frequency spectrum monitoring, signal reconnaissance, and electromagnetic information safety detection, and more specifically relates to an automatic search method for electromagnetic signals. Background technique [0002] In the fields of spectrum monitoring, signal reconnaissance, electromagnetic information security detection, etc., it is often necessary to find electromagnetic signals with certain characteristics in complex electromagnetic environments, such as illegal satellite broadcasting and television signals, reactionary radio signals, wireless eavesdropping and stealing signals, and information equipment Electromagnetic leakage signal, etc. However, in the actual process of spectrum monitoring or signal reconnaissance, thousands of electromagnetic signals are usually received at the same time. Searching for electromagnetic signals with certain specific characteristics among so many signals is very impor...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings, the present invention provides a general automatic search method for electromagnetic signals, which can automatically complete the efficient search and interception of electromagnetic signals with specified characteristics without manual on-duty, and provides services for spectrum monitoring, signal reconnaissance and Electromagnetic information security detection provides convenient means

Images