Adaptive identification method of carrier used for electronic countermeasure equipment to detect signal

Abstract

The present invention provides an adaptive identification method for electronic countermeasure equipment to detect the carrier of a signal, which can effectively identify the carrier of the signal. Including: collecting the discrete time signal sequence received by the electronic countermeasure equipment; dividing the signal into K groups of signal data equally; processing the K groups of signal data into K column vectors; constructing a matrix A based on the K column vectors; obtaining the correlation matrix of A R, estimate the rank P of R; perform singular value decomposition on A, and convert the matrix V A Represented as a column vector; from the matrix V A After extracting LN‑P column vectors from , a new LN×1-dimensional column vector is obtained, and the k-th column vector is denoted as g k ; to g k The elements in are processed to obtain an L(P‑N+1)×P-dimensional matrix Θ k ; using Θ k Construct the matrix η; perform singular value decomposition on η, and divide U η Represented as a column vector; extract U η The last column column vector u of η,L(P‑N+1) , processing to get the column vector h (l) ; Combine the column vectors obtained in the previous step into a vector h; obtain the signal carrier z based on the vector h.

Description

technical field [0001] The invention relates to the technical field of signal sorting and identification of electronic countermeasures equipment, in particular to an adaptive identification method for carriers of signals detected by electronic countermeasures equipment, and a method for adaptive identification of carriers of signals detected by electronic countermeasures equipment. method. Background technique [0002] Electronic countermeasure equipment generally needs to reconnaissance, sorting and identification of threat source signals that may exist in the external environment before confrontation, so as to judge the type of threat source, working parameters, working status and other information, and formulate effective and effective Therefore, the correct identification of the signal is of great significance to the electronic countermeasure equipment, because it is an important guarantee and basis for effective countermeasures. [0003] The electronic countermeasure s...

AI Technical Summary

Problems solved by technology

With the continuous development of electronic countermeasure technology, especially the application of intelligent technology in the field of electronic countermeasure technology, the requirements for signal sorting and identification are becoming higher and higher. The latest requirement of modern electronic countermeasure equipment is to have the ability to fingerprint the signal The ability to identify, which belongs to the category of fine signal identification, and the important prerequisite for fine signal identification is to be able to correctly identify the carrier and baseband parts of the signal; however, since the main detection object of electronic countermeasure equipment is the signal emitted by a third-party threat , the object of signal processing is a non-cooperative signal. The main feature of a non-cooperative signal is that it does not have any prior information. It is very difficult to identify the carrier of this signal

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