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A method for target extraction of energy peaks combined with broadband high-resolution range images

A high-resolution range image and target extraction technology, which is applied in the field of ground-based radar broadband recognition, can solve the problems of low signal-to-clutter ratio, reduced probability of extracting targets, and reduced efficiency, so as to meet computing requirements, reduce data volume, and improve target extraction The effect of probability

Active Publication Date: 2019-10-11
WUHAN BINHU ELECTRONICS
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Problems solved by technology

The energy maximum method considers that the energy and the largest pulse in the broadband area echo are the center of the target, but in the clutter area, the signal-to-clutter ratio is very low, and when the clutter energy is greater than the target, the probability of extracting the target by this method will be greatly reduced
The peak maximum method considers the pulse with the largest peak value in the broadband area echo as the center of the target, but when interference or communication errors occur, the efficiency of this method is greatly reduced

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  • A method for target extraction of energy peaks combined with broadband high-resolution range images
  • A method for target extraction of energy peaks combined with broadband high-resolution range images
  • A method for target extraction of energy peaks combined with broadband high-resolution range images

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Embodiment Construction

[0048] Glossary:

[0049] AD sampling: analog to digital signal conversion;

[0050] FFT: Fast Fourier Transform.

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] The invention provides a method for extracting an energy peak combined with a broadband high-resolution range image target, which realizes the purpose of improving the target extraction probability in an interference and clutter environment, and the target extraction probability is as high as 90%.

[0053] Such as figure 1 As shown in Fig. 1 , the operator issues a wideband recognition command to the target that needs to be recognized and judged in the narrowband mode, and the command terminal predicts the location of the next lap according to the track information of the target, and uses this location as the center point to set a certain Angle and distance ranges are wideband scan mode areas. For example, within the range of the predicted posi...

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Abstract

The invention relates to the field of wideband identification of ground radar, in particular to a method for extracting a wideband high-resolution range profile based on energy and peak combination. Atarget is preliminarily tracked in a narrow-band mode, and signals are identified in a broadband in the next scanning period. The identification includes an energy summation and maximum peak selection step, an energy and peak combination step, and a target extraction step. Different identification mode weights are adopted in the identification process. Thus, the probability of target extraction is improved.

Description

technical field [0001] The invention relates to the field of ground-based radar broadband identification, in particular to a method for extracting energy peaks combined with broadband high-resolution range images. Background technique [0002] The radar high resolution range profile (HRRP) can provide the geometric structure information of the target along the radial range dimension, which is very helpful for the identification of target sorties and aircraft types. Usually the warning radar works in a narrow band, the bandwidth is only a few megahertz. Affected by channel bandwidth and processing resources, the wideband mode of warning radar can only work in the area where the target is predicted, so the wideband echo signal received by the radar is an area signal, and extracting target information from the area signal will become a broadband signal processing an important content of . [0003] Commonly used methods for broadband target information extraction include energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89G01S7/41
Inventor 赵三伟马俊杰陈钟
Owner WUHAN BINHU ELECTRONICS
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