A characteristic signal recognition method and device based on AD

A technology of characteristic signal and identification method, applied in the direction of target, target indication system, offensive equipment, etc., can solve the problems of sharp waveform and spikes, and achieve the effect of improving stability and improving anti-interference ability.

Active Publication Date: 2015-11-25
BEIJING ZHONGMING HENGSHENG TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Sometimes the waveform will be very sharp, with spikes, or even a lot of jitter after exceeding the predetermined threshold, so a more reliable way is needed to judge whether the characteristic waveform has arrived

Method used

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  • A characteristic signal recognition method and device based on AD
  • A characteristic signal recognition method and device based on AD

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Embodiment Construction

[0027] The audio signal is a signal with a certain frequency and amplitude, plus the phase, which determines the characteristics of the audio signal. Projectiles typically travel at supersonic speeds, which in flight create shock waves (also known as Mach waves), which are strong compression waves in moving gases. During supersonic motion, the strong discontinuity formed by the superposition of micro-disturbances (such as weak compression waves) has a strong nonlinear effect, so the electrical signal collected by it will also have a very strong nonlinear effect .

[0028] Audio collection devices usually output analog signals directly. With the development of technology, there are currently audio collection devices that directly output digital signals. Digital signals and analog signals will be processed in different ways in the present invention.

[0029] Regarding the electrical signal, it is usually a voltage signal, and the processing circuit of the voltage signal is rela...

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Abstract

The invention discloses a characteristic signal identification method and device based on AD. Based on first comparison and second comparison, interference is efficiently filtered out, and thus when projectile shock wave signals are captured, the anti-interference capacity of equipment can be greatly improved, and the stability of the equipment can be improved.

Description

technical field [0001] The invention relates to a method and device for identifying characteristic signals, which are used for identifying shock wave signals of projectiles, and belong to the technical field of automatic target reporting for live ammunition shooting training. Background technique [0002] Live ammunition target reporting usually adopts manual target reporting, but considering the safety issues caused by ricochets, automatic target reporting systems and methods have emerged. For example, the method for identifying slow bullet holes used in the live ammunition shooting system disclosed in Chinese patent document CN100354595C is based on image processing, and obtains the impact point by obtaining image information on the target paper through image processing. [0003] The current automatic target reporting scheme is also mainly based on image processing, such as Chinese patent documents CN103353259A, CN2831033Y, CN101732380U, such as CN103353259A which adopts a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41J5/14
Inventor 陈三梅卢伟车伟王世建
Owner BEIJING ZHONGMING HENGSHENG TECH
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