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Acoustic array capable of detecting multiple sound source targets

An acoustic array and array technology, applied in measurement devices, radio wave measurement systems, instruments, etc., can solve problems such as lack of versatility, and achieve the effect of improving versatility

Inactive Publication Date: 2019-04-16
THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In acoustic detection, a suitable array form is often designed according to the characteristic frequency characteristics of the sound source target to achieve the optimal detection effect, resulting in an array form that can only be aimed at a specific flying target and is not universal

Method used

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  • Acoustic array capable of detecting multiple sound source targets
  • Acoustic array capable of detecting multiple sound source targets
  • Acoustic array capable of detecting multiple sound source targets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , Figure 10 As shown, it includes a planar sound transmission array. The planar sound transmission array includes multiple groups of microphones 1 and multiple array rods 2. Each group of microphones is installed on one array rod, and the multiple groups of microphones are on the same plane. It includes a plurality of planar sound transmission arrays, which are arranged in layers up and down, and there is a space between the top and bottom of the planar sound transmission arrays; the array rods of the planar sound transmission arrays are installed on the central axis 7 . The included angles between the array rods of the planar sound transmission array are the same, the lengths of each array rod are the same, and the outer ends of each array rod are on the same circumference; the distribution of each group of microphones on the array rods of the planar sound transmission array is the same . During specific implementation, it includes three planar soun...

Embodiment 2

[0034] Such as figure 1 , Figure 10 As shown, a support 8 is installed on the central axis 7, and the array rods 2 are connected to the central axis through the support 8; the array rods 2 and the support 8 are hinged, and can rotate upward within a range of 90 degrees, and each array rod is folded non-interference. The upper part of the central shaft 7 is provided with a snap-fit ​​part 9, and the snap-fit ​​part is provided with a plurality of slots along the circumferential direction, such as Figure 11 shown. During implementation, buckling components are also provided under the supports of the first planar sound transmission array and the second planar sound transmission array. After each array rod is folded up by 90 degrees, the upper end of each array rod is located in the slot. Acoustic array weight ≤10kg, folded size Expand Size Envelope The array rods are made of carbon fiber and aluminum alloy joints, positioned and bonded by tooling; after the array rods a...

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Abstract

The invention relates to an acoustic array capable of detecting multiple sound source targets. The acoustic array comprises planar sound transmission arrays. Each planar sound transmission array is formed by several groups of microphones and a plurality of array rods. Each group of the microphones is installed one array rod. The several groups of microphones are in a same plane. The plurality of planar sound transmission arrays are arranged in upper and lower layers. There is a gap between the upper and lower layers of the planar sound transmission arrays. And the array rod of each planar sound transmission array is installed on a central axis. The multiple targets with multiple frequency ranges can be detected simultaneously, and the versatility of an acoustic detection array can be effectively increased.

Description

technical field [0001] The invention relates to a sound array capable of detecting multiple sound source targets. Background technique [0002] At present, in addition to large-scale flying targets such as armed helicopters and cruise missiles, the threat of low-altitude invasion also includes small and medium-sized aircraft such as light aircraft, fixed-wing, and even rotary-wing UAVs. These flying targets usually fly below 300m and are not easy to be detected by radar and photoelectric detection. Acoustic detection is a non-line-of-sight detection method, which is not affected by conditions such as visibility and line-of-sight. The working mode is completely passive. Low-altitude and ultra-low-altitude early warning detection has played a very good supplementary role. In acoustic detection, an appropriate array form is often designed according to the characteristic frequency characteristics of the sound source target to achieve the optimal detection effect, resulting in ...

Claims

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Application Information

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IPC IPC(8): G01S5/20
CPCG01S5/20
Inventor 袁彦王皓杨博王志峰杨立学周印龙程宇孙志洁张思凡蔡文义
Owner THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP