Method and system for suppressing mixed interference signals
A technology of jamming signals and signals, which is applied in the field of wireless communication, can solve the problems of great harm to weapon systems and the unsatisfactory suppression of deceptive jamming signals, and achieve the effect of improving the suppression effect
Active Publication Date: 2018-07-24
ROCKET FORCE UNIV OF ENG
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[0003] Although the existing array antenna anti-jamming suppression algorithm has a good effect on suppressing jamming signals, it is not ideal in suppressing spoofing jamming signals, and spoofing jamming signals are often more harmful to weapon systems
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] The object of the present invention is to provide a method and system for suppressing mixed interference signals, which are used to improve the suppression effect of mixed interference signals.
[0047] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] The...
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The invention discloses a method and system for suppressing mixed interference signals. The method comprises acquiring a to-be-processed signal that includes a desired signal, a suppressed interference signal, and a fraud signal; calculating the direction of arrival of the desired signal; calculating the direction of arrival of the suppressed interference signal; performing matrix filtering on theto-be-processed signal according to the direction of arrival of the desired signal to obtain a first filtered signal; performing oblique projection filtering on the first filtered signal according tothe direction of arrival of the suppressed interference signal and the direction of arrival of the desired signal to obtain a second filtered signal; performing matched filtering on the second filtered signal. The method and system can suppress the fraud signal and the suppressed interference signal at the same time, and improve the suppression effect of the mixed interference signal.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a mixed interference signal suppression method and system. Background technique [0002] Satellite navigation has been widely used in weapon systems because of its high positioning accuracy and the advantages of not accumulating errors over time. However, the satellite navigation signal power is generally 20dB lower than the noise signal, so it is extremely vulnerable to attack and interference, which will prevent the Global Navigation Satellite System (GNSS) receiver from capturing and tracking navigation satellites normally. In response to this problem, GNSS receivers equipped with weapon systems generally use array antennas to suppress jamming signals in the airspace. [0003] Although the existing array antenna anti-jamming suppression algorithm has a good effect on suppressing jamming signals, it is not ideal in suppressing deception jamming signals, and deception jamm...
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IPC IPC(8): G01S19/21G01S19/37
CPCG01S19/215G01S19/37
Inventor 范志良王海洋姚志成侯博李琳琳席建祥魏振华张盛魁吴智慧
Owner ROCKET FORCE UNIV OF ENG