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A nonlinear frequency modulation signal optimization method and device and storage medium

A technology of nonlinear frequency modulation and optimization method, which is applied in the direction of design optimization/simulation, genetic rules, special data processing applications, etc., and can solve problems such as the reduction of NLFM signal resolution

Active Publication Date: 2019-03-08
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a method, device, and storage medium for optimizing an NLFM signal, which solves the problem of reducing the resolution of the NLFM signal in the prior art

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  • A nonlinear frequency modulation signal optimization method and device and storage medium
  • A nonlinear frequency modulation signal optimization method and device and storage medium
  • A nonlinear frequency modulation signal optimization method and device and storage medium

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Embodiment Construction

[0079] In order to understand the characteristics and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application will be described in detail below in conjunction with the drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present invention.

[0080] An embodiment of the present invention provides an NLFM signal optimization method, figure 1 An implementation flow chart of an NLFM signal optimization method provided by an embodiment of the present invention, such as figure 1 As shown, the NLFM signal optimization method includes:

[0081] Step 101. Establish a time domain function model of the NLFM signal based on the piecewise linear function.

[0082] Here, step 101 is based on a piecewise linear function, and establishing a time-domain function model of a non-linear frequency modulation NLFM signal can be realized b...

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Abstract

The invention discloses a nonlinear frequency modulation signal optimization method. The method comprises the following steps of based on a piecewise linear function, establishing a time domain function model of the nonlinear frequency modulation NLFM signal; establishing an optimization mathematical model based on the autocorrelation performance corresponding to the time domain function model ofthe NLFM signal; based on the optimization mathematical model, establishing an algorithm model of the augmented Lagrangian genetic simulated annealing hybrid algorithm; obtaining an initial NLFM signal, and obtaining an optimal NLFM signal corresponding to the initial NLFM signal based on an algorithm model of the initial NLFM signal and the augmented Lagrange genetic simulated annealing hybrid algorithm. The embodiment of the invention simultaneously discloses a nonlinear frequency modulation signal optimization device and a storage medium.

Description

technical field [0001] The invention relates to the technical field, in particular to a method and device for optimizing a nonlinear frequency modulation signal, and a storage medium. Background technique [0002] Linear Frequency Modulation (LFM) signals are often used in modern radars, such as Synthetic Aperture Radar (SAR), because of their high-resolution imaging capabilities for targets. Radars produce high sidelobes when using LFM signals, and high sidelobe levels can cause sidelobe false information on targets. In practical applications, windowing is usually used to suppress the side lobe of the LFM signal and maintain the phase information. However, windowing to suppress sidelobes can lead to a decrease in radar signal-to-noise ratio (SNR). In order to overcome the problem of SNR loss caused by sidelobe suppression, the non-linear frequency modulation (NLFM) signal can preserve the SNR of the radar at the same time and achieve the effect of suppressing the sidelobe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/12
CPCG06F30/20G06N3/126
Inventor 金国栋王宇邓云凯龙雅君刘开雨
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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