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Broadband radar high-speed target accumulation detection method based on size RFT

A broadband radar and high-speed target technology, applied in the radar field, can solve problems such as no longer applicable, and achieve the effects of facilitating engineering realization, improving echo signal-to-noise ratio, and improving detection performance

Active Publication Date: 2018-09-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Therefore, when detecting high-speed targets, traditional methods are no longer applicable in wideband radars

Method used

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  • Broadband radar high-speed target accumulation detection method based on size RFT
  • Broadband radar high-speed target accumulation detection method based on size RFT
  • Broadband radar high-speed target accumulation detection method based on size RFT

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Embodiment Construction

[0034] The present invention mainly utilizes scientific computing software Matlab R2014a to carry out simulation experiments to verify its correctness. Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] see figure 1 , a kind of scale RFT-based broadband radar high-speed target accumulation detection method proposed by the present invention is specifically implemented through the following steps:

[0036] Step 1, the broadband radar transmits a chirp signal and receives the echo signal returned to the radar.

[0037] In this embodiment, the broadband radar transmits a chirp signal in, is the fast time, t m for slow time. In the field of radar, the time taken for a pulse from transmission to reception is called fast time, which is also used to represent the target distance; slow time represents the time required for multiple pulses.

[0038] The distance between the target and the wideband radar is...

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Abstract

The invention provides a broadband radar high-speed target accumulation detection method based on size RFT, which belongs to the technical field radars, effectively solves the problems of size effectand distance movement when a broadband radar detects high-speed targets through two-dimensional parameter search, and eliminates the size effect and distance movement effect when the broadband radar detects that a high-speed target occurs, so that the echo signal to noise ratio is increased, the phase-coherent accumulation of target energies can be realized under the condition of low signal to noise ratio, and further, the detection performance of the broadband radar to the high-speed target is improved. According to the method, all flows can be realized by utilizing fast Fourier transform, and engineer realization is facilitated.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to a scale RFT-based high-speed target accumulation detection method for wideband radar. Background technique [0002] In recent years, with the rapid development of science and technology, a large number of hypersonic vehicles have begun to appear. How to effectively and accurately detect high-speed targets has become a difficult problem in the field of radar signal processing. Most traditional coherent accumulation detection methods are only applicable to narrowband radars. Under narrow-band conditions, the approximate relationship can be used to ignore the time motion of the target pulse and the approximation error caused by the bandwidth. However, with the increasing demand for high-resolution and long-distance detection, in practice, high-power broadband radars tend to be more widely used. For broadband radar systems, in order to ensure the performance of high resolution and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 孔令讲孙智陈芳香王亚茹李小龙易伟崔国龙张天贤
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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