Non-continuous spectrum high-frequency radar range sidelobe suppression apparatus and method thereof

Abstract

The invention discloses a suppression device for the distance side lobe of a discontinuous spectrum high-frequency radar based on Bayes regularization and a suppression method thereof., which is characterized in that the suppression device comprises a transmitting antenna, a receiving antenna, an antenna switch, a matched filter, a distance side lobe suppression system, a frequency synthetic system and a frequency spectrum monitoring system; the suppression method thereof comprises the following steps: monitoring the frequency spectrum of outside electromagnet environment on a real-time basis and selecting a plurality of frequency points transmitted from the frequency spectrum; carrying out frequency synthesis to a discontinuous frequency value selected by the frequency spectrum monitoring system and transmitting; carrying out matching treatment to transmitting signals and receiving signals after the reflection echo of the transmitting signals is received; constructing the cross response of the transmitter and the receiver of each distance unit; and constructing regular functions according to a target spectrum model and suppressing the distance side lobe by adopting the interative method. The invention has the advantages of good suppression effect of the distance side lobe of the discontinuous spectrum high-frequency radar, insensitive Doppler, good suppression effect of noise, and improved target detection performance of the radar.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and relates to a high-frequency radar sidelobe suppression method, in particular to a Bayesian regularization-based discontinuous spectrum high-frequency radar range sidelobe suppression device and a suppression method thereof. Background technique [0002] High-frequency radar works in the short-wave band of 3-30MHz. In this frequency band, external interference is serious, and various interferences entering the radar receiver will seriously affect the detection performance of the radar. In order to ensure the reliable operation of high-frequency radar in the electromagnetic environment with crowded spectrum, a variety of anti-jamming technologies are currently used in the time domain, frequency domain, air domain or polarization domain to suppress interference. Compared with other anti-jamming methods, the frequency-domain anti-jamming method based on real-time frequency selecti...

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Problems solved by technology

[0004] The purpose of the present invention is aimed at the high-range sidelobe (different distance units have different sidelobe structures) of discontinuous spectrum system high-frequency radar and the problem that present most

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