Method for generating ultralow-phase-noise multi-point agile frequency signals

Abstract

The invention relates to a method for generating an ultralow-phase-noise multi-point agile frequency signal, which comprises the following steps of accessing a replaceable comb-shaped spectrum generator, and directly carrying out frequency multiplication on a reference frequency signal through the comb-shaped spectrum generator to obtain a frequency signal; adopting a band-pass filter to completefirst-time frequency selection filtering work; and adopting a switch filter with a plurality of paths of filtering units to filter out required frequency signals according to frequency segments. A comb spectrum generator is introduced to output signals in a direct frequency multiplication mode, phase noise is deteriorated only according to a frequency multiplication coefficient, other phase noisedeterioration factors are not introduced, and an ideal phase noise index can be obtained; meanwhile, by replacing the comb spectrum, changing the reference frequency and replacing the filter frequency, output of frequency signals of different frequency bands can be achieved, and L-KU frequency band ultra-wideband coverage is achieved; the switching speed of the plurality of frequency points is theswitching time of the switch, so that the switching speed is high; the clutter suppression degree is improved, and stray leakage is reduced.

Description

technical field [0001] The invention relates to phased array radar communication technology, in particular to a method for generating ultra-low phase noise multi-point agile frequency signals. Background technique [0002] Phased array radar is phase-controlled electronically scanned array radar, which can fundamentally solve various inherent problems of traditional mechanical scanning radar. Under the same aperture and operating wavelength, phased array's response speed, target update rate, multi-target tracking Capability, resolution, versatility, electronic countermeasures, etc. are far superior to traditional radars. [0003] Broadband frequency signal generation technology is a key technology in modern radar design. Compared with single frequency point signal generation, it is more difficult to achieve good phase noise performance and frequency hopping time in a large bandwidth, which needs to be considered comprehensively. various factors. The generation of frequency...

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Problems solved by technology

[0011] In order to overcome the above problems or at least partly solve or mitigate the above problems, the present invention provides a method for generating ultra-low phase noise multi-point frequency In the process of frequency source, the frequency switching time is slow, and it is very susceptible to various phase noise deterioration factors and clutter processing factors, etc., and can realize the output of frequency signals in different frequency bands through the same signal generation method

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