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Target detection method based on effective scattering point energy accumulation

A technology of target detection and energy accumulation, which is applied in the target detection field of wideband radar range extension targets, and can solve the problems of small operating distance, high complexity of radar signal processing, and limited advantages in wideband radar detection and tracking.

Pending Publication Date: 2021-04-30
BEIJING INST OF REMOTE SENSING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high complexity of radar signal processing, insufficient radar transmission power and small operating range, the advantages of broadband radar in detection and tracking are limited to a certain extent.

Method used

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  • Target detection method based on effective scattering point energy accumulation
  • Target detection method based on effective scattering point energy accumulation
  • Target detection method based on effective scattering point energy accumulation

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Embodiment

[0017] The present invention is a kind of target detector based on effective scattering point energy accumulation, and the steps of specific embodiment are as follows:

[0018] The first step is to select k effective scattering points of the one-dimensional range image of the target echo after pulse pressure according to the effective scattering point selection method;

[0019] The second step is to perform non-coherent accumulation on k effective scattering points to obtain the energy accumulation value

[0020] The third step is to calculate the detection threshold according to the number k of effective scattering points

[0021] In the fourth step, the energy accumulation value of the effective scattering points and detection threshold Compare and judge whether there is a target.

[0022] The first step is to select k effective scattering points of the one-dimensional distance image of the target echo after the pulse pressure according to the effective scattering p...

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Abstract

The invention discloses a target detection method based on effective scattering point energy accumulation. The method comprises the following steps: 1, selecting k effective scattering points of a target echo one-dimensional range profile after pulse compression according to an effective scattering point selection method; and 2, carrying out non-coherent accumulation on the k effective scattering points to obtain an energy accumulation value, 3, calculating a detection threshold according to the number k of the effective scattering points, 4, comparing the energy accumulation value of the effective scattering points with the detection threshold, and judging whether a target exists or not. The detection method provided by the invention has better detection performance than a classical distance extension target detector.

Description

technical field [0001] The invention relates to the field of radar target detection, in particular to a target detection method suitable for wideband radar range extension targets. Background technique [0002] The range resolution of wideband radar is determined by the large operating bandwidth of the radar. Generally, wideband radars work in high frequency bands, and wideband waveforms are easier to implement. The high range resolution makes the radar echo of the target cover multiple range resolution units, and can distinguish each scattering point of the target. For example, for an aircraft target, the high-resolution one-dimensional range image and can show the nose, tail, aircraft wing echo. Narrow-band radar is usually used for tracking and rough estimation of motion, and lacks sufficient range resolution to directly measure information such as target length. In addition, wideband radar allows more advanced signal processing algorithms for real-time range Doppler i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 曲奎宇
Owner BEIJING INST OF REMOTE SENSING EQUIP