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Method for performing waveform optimization on motion target in complex clutter environment

A moving target, waveform optimization technology, applied in the direction of reflection/re-radiation of radio waves, radio wave measurement systems, utilization of re-radiation, etc.

Inactive Publication Date: 2019-03-08
SHANGHAI RADIO EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of waveform design based on prior information for moving target detection in complex environments has not been really studied.

Method used

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  • Method for performing waveform optimization on motion target in complex clutter environment
  • Method for performing waveform optimization on motion target in complex clutter environment
  • Method for performing waveform optimization on motion target in complex clutter environment

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Embodiment Construction

[0079] According to the following Figure 1 to Figure 3 , the preferred embodiment of the present invention is described in detail.

[0080] like figure 1 As shown, the present invention provides a method for waveform optimization of a moving target in a complex clutter environment, comprising the following steps:

[0081] Step S1, calculate the moving target model with constant radial velocity;

[0082] Step S2, determining the static clutter response and the motion clutter response in the complex clutter environment;

[0083] Step S3, obtaining the optimal waveform of the noise feature-based echo signal oriented to the detection probability according to the Neyman-Pearson criterion;

[0084] Step S4, obtaining the optimal energy spectral density ESD of the transmitted signal according to the minimum value of the power spectral density PSD in the noise characteristic.

[0085] In the described step S1, the method for calculating a moving target model with a constant radia...

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Abstract

The invention discloses a method for performing waveform optimization on a motion target in a complex clutter environment. The method includes calculating a motion target model having constant radialvelocity, and determining static clutter response and motion clutter response in a complex clutter environment; obtaining the optimal waveform of a noise characteristic based echo signal facing detection probability according to a Neyman-Pearson criterion; and obtaining the optimal energy spectral density (ESD) of an emission signal according to the minimum value of power spectral density (PSD) inthe noise characteristics. Through prior information such as static clutter, motion clutter and targets, the method can design an energy spectrum of the emission signal and detect a motion target byutilizing the optimal waveform in the case of different noise; and compared with traditional linear frequency modulation and phase encoding signals, the method can make the detection probability facing to the motion target reach to the maximum in the case of the same false alarm probability.

Description

technical field [0001] The invention relates to the field of radar waveform design, in particular to a method for optimizing the waveform of a moving target in a complex clutter environment. Background technique [0002] Complex clutter environments include static clutter such as lakes and ground, and background clutter such as vehicles and aircraft that are not targets of detection. The principle of the traditional moving target detection radar is to use the Doppler frequency shift of the moving target echo to distinguish the moving target from the fixed target. 现在绝大部分动目标检测雷达用来检测运动目标的发射信号都是固定形式的,如线性调频信号、相位编码信号等,其波形时域或频域并不以检测目标特性、杂波特性 It is only necessary to analyze the phase change of the echo signal after the fixed signal irradiates the scene. [0003] At present, basically all the problems of waveform time domain and frequency domain design based on prior information are oriented to stationary targets in the scene, so as to realize functions such as surface survey and mil...

Claims

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Application Information

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IPC IPC(8): G01S13/00
CPCG01S13/006
Inventor 朱炳祺杜科李盘虎蒋兵兵董千里
Owner SHANGHAI RADIO EQUIP RES INST
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