A conventional radar anti-radar signal high-precision real-time forwarding deception jamming method

Abstract

The invention relates to a method for resisting high-precision real-time forwarding cheating interference of a radar signal for a conventional radar. Aiming at a current situation that the conventional radar is difficult to effectively resist the high-precision real-time forwarding cheating interference of the radar signal, the method comprises the following steps: adding a broadband signal detection channel to the conventional radar; employing the multi-scattering-point characteristics of a real object in a broadband signal target echo signal, wherein a radar signal forwarding cheating interference signal is the signal intrinsic difference transmitted by a jammer for receiving the characteristics of a radar transmitting signal; carrying out the radar signal forwarding cheating interference analysis and discrimination of a radar echo at a concerned distance point; and directly inhibiting the corresponding forwarding cheating interference in a normal channel of the radar. The method achieves the processing of a broadband signal in a wave gate of the concerned echo, and can overcome a difficulty in whole-course omnibearing broadband signal detection and processing because of the limit from time resources of radar whole airspace detection. The method is better in universality and practicality.

Description

technical field [0001] The invention belongs to the technical field of radar anti-jamming, and relates to a radar anti-radar signal forwarding deception jamming method with high precision and real time. Background technique [0002] Radar is faced with increasingly complex electronic interference in actual use. Among them, the transponder deception jammer adopts digital radio frequency storage technology to receive radar pulse signals in real time, and the deception jamming after storage and retransmission can accurately reproduce signals including phase encoding signals. Various radar signals within the range of the radar being interfered with can be transmitted within a very short time or after a delay within the pulse repetition period of the interfered radar at any time of the radar detection distance; and because the instantaneous bandwidth of the conventional radar signal is generally in the Within 10MHz, the target echo signal does not have the physical scattering cha...

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Problems solved by technology

[0004] The present invention aims at the present situation that it is difficult for existing conventional radar anti-jamming methods to effectively suppress radar signal high-precision and real-time forwarding deception interference. The signal only transmits the radar signal and does not contain the characteristics of the physical scattering characteristics of the radar target. A broadband signal receiving and processing channel is installed in the conventional radar, and a broadband echo deception interference characteristic is analyzed and identified, and deception interference is generated to suppress the invisible signal. The radar signal forwarding deception interference analysis and judgment module realizes the discrimination of forwarding deception interference and the suppression of forwarding deception interference in the normal channel of radar through real-time analysis of the characteristic difference between the forwarding deception interference signal and the broadband signal target echo signal

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