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Stereo velocity detection method and system for low, slow and small targets based on sound intensity detection

A low-slow, small-target, three-dimensional velocity technology, applied in the field of low-slow, small-target three-dimensional velocity detection method and system, can solve the problems of high cost, difficulty in large-scale promotion and use, and limited accuracy, and achieve low cost and simple and easy system , The effect of high detection accuracy

Active Publication Date: 2018-09-18
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

The existing low-slow and small target detection is mostly based on infrared optical sensors or radars. The above-mentioned methods are costly, have limited accuracy, and are difficult to promote and use on a large scale.

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  • Stereo velocity detection method and system for low, slow and small targets based on sound intensity detection
  • Stereo velocity detection method and system for low, slow and small targets based on sound intensity detection
  • Stereo velocity detection method and system for low, slow and small targets based on sound intensity detection

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0031] The inventors of the present invention consider that although the traditional target detection method is relatively perfect, it is difficult to provide a method that takes into account both accuracy and cost for slow and small targets with characteristics such as low flying height, slow moving speed, and weak scattering intensity. Specifically, the existing low-speed and small-target detection is mostly based on infrared optical sensors and radars, which ar...

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Abstract

The invention discloses a low and slow small-target three-dimensional speed detection method and system based on sound intensity detection, and the method comprises the steps: setting at least four detection units below a target flight region, wherein the detection units are distributed on two planes which are perpendicular to each other, and each plane at least comprises three detection units; enabling each detection unit to obtain a moment when the detection unit gets closest to a target when the target gets close, and enabling the moment to serve as a zero-crossing moment; and calculating the projection speeds of the target on the two planes according to the zero-crossing moments obtained by all detection units. The method and system provided by the invention are simple and feasible, are low in cost, are high in detection precision, and are suitable for the wide popularization in engineering application.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a method and system for detecting the three-dimensional velocity of low, slow and small targets based on sound intensity detection. Background technique [0002] Low-slow and small target is the abbreviation of low-altitude and slow-speed small target, which means that the flying altitude is below 1km, the flying speed is less than 200km per hour, and the radar reflection area is less than 2m. 2 Various small aircraft or floating objects in the air. It is difficult for the existing technology to use a single detection method to realize effective detection and monitoring of low-slow and small targets all-day and all-weather. The detection of low, slow and small targets is a typical complex information system, and it is a technical problem in the current international scope. With the opening of my country's low-altitude airspace, the supervision and prevention of low, slow and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S11/14
CPCG01S11/14
Inventor 高洁
Owner BEIJING INST OF ENVIRONMENTAL FEATURES