Fixed target protection-based satellite navigation signal repeater deception jamming system and method thereof

Abstract

The invention provides a fixed target protection-based satellite navigation signal repeater deception jamming system and a method thereof. The system comprises multiple satellites, multiple repeaters, a real target point and a set false target point, wherein the number of the repeaters is the same as that of the satellites, one repeater receives navigation satellite signals broadcasted by one satellite, the multiple repeaters receive navigation satellite signals broadcasted by multiple satellites respectively and time delay of the multiple repeaters is controlled respectively through a digital delay line technology, the multiple navigation satellite signals after certain time delay are broadcasted via the multiple repeaters respectively, and thus, an enemy weapon guided by using the navigation satellite signals in an effective jamming area is further deceived to deviate from the real target point and advance to the set false target point. The problem that the traditional repeater deception can not handle receiver inertial navigation detection can be solved, and an important role is played in protecting a fixed important target.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a satellite navigation signal forwarding deception jamming system based on fixed target protection and a method thereof. Background technique [0002] The satellite navigation signal spoofing jamming system broadcasts generated false signals or injects delays into real satellite signals, so that the receiver receives the forwarded signals, thereby forming false positioning results to spoof and jam the target. [0003] In the detection of forwarding fraud interference, the mainstream forwarding fraud interference detection algorithm inevitably has some shortcomings, because the format of the forwarded signal is exactly the same as that of the real signal, so the detection method based on the signal parameter threshold (such as the signal encryption and decryption method, etc.) It is not easy to detect forwarding spoofing interference. In general, the receiver's detec...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a satellite navigation signal forwarding deception jamming system based on fixed target protection and its method, to guide the enemy weapons guided by navigation signals in the effective jamming area to deviate from the real target point and go to the set virtual false target At the same time, it can effectively deal with the detection of the inertial navigation unit that comes with the weapon receiver, and solve the problem that traditional forwarding and deception cannot cope with the detection of the inertial navigation unit of the receiver, which is of great significance to the protection of fixed important targets

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