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RCS fluctuation period analysis method based on power spectrum estimation

A technology of power spectrum estimation and analysis method, which is applied in the field of RCS fluctuation period analysis based on power spectrum estimation, can solve the problem of few researches on the target RCS fluctuation period, and achieve the effect of improving the probability of interception

Active Publication Date: 2019-06-21
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0003] At present, the research on radar echo bullying mainly focuses on the statistical model of target fluctuations, RCS, high-resolution characteristics and other fields, and there is little research on the target RCS fluctuation period

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  • RCS fluctuation period analysis method based on power spectrum estimation
  • RCS fluctuation period analysis method based on power spectrum estimation
  • RCS fluctuation period analysis method based on power spectrum estimation

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0027] The analysis of the fluctuation period of RCS with angle variation based on power spectrum estimation has important reference significance for the design of the seeker, which can greatly improve the probability of the target being intercepted. The power spectral density of the signal reflects the size of the unit frequency band signal ...

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Abstract

The invention relates to an RCS fluctuation period analysis research method based on power spectrum estimation. The method comprises steps that RCS analysis expression vector values of different pointsource targets are acquired; the indirect method is utilized to solve the power spectral density, and power spectrum density estimation is utilized to solve a fast fluctuation period; the fluctuationperiod law of the point source targets is analyzed. Different point source target analysis fluctuation periods are acquired through angle change, through analyzing the cutoff frequency of the power spectrum, the fast fluctuation period of the target RCS changing with the angle is obtained, the power spectral density of a signal reflects the magnitude of the signal power per unit band and is a function of frequency, and the power spectrum reveals the useful information such as periodicity implied in the signal.

Description

technical field [0001] The invention relates to radar technology, in particular to a method for analyzing RCS fluctuation periods based on power spectrum estimation. Background technique [0002] The radar target is composed of a series of scattering points, and the relative radar line-of-sight angle changes. When the vectors of the scattering points are synthesized, the relative phases of each will change, resulting in amplitude fluctuations. The design of radar sensor parameters is affected by the rapid fluctuation of the target. Most targets are composed of multiple scattering centers. As the radar line of sight angle changes, its RCS (radar cross section) presents a fluctuating distribution feature. In the process of the seeker's detection and tracking of the target, the amplitude fluctuation characteristics affect the design strategy of the radar seeker. Therefore, the study of the amplitude fluctuation period of the target radar echo has important reference significanc...

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Application Information

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IPC IPC(8): G01S7/41
Inventor 李焕敏李胜闫华王超
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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