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Bionic comb filter

A comb filter and narrow-band filter technology, applied in the field of signal detection, to achieve the effect of broad application prospects

Active Publication Date: 2021-02-26
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acoustic field detection of stealth submarines and ships sailing at low speed poses a serious challenge to traditional underwater acoustic detection technology

Method used

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the common meanings understood by those skilled in the art to which the present invention belongs.

[0032] refer to figure 1 , the present invention provides a bionic comb filter, comprising a power supply circuit, a single-chip microcomputer 10, a signal detector 20, a primary filter amplifier circuit 1, a secondary filter amplifier circuit 2, a narrow...

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Abstract

The invention provides a bionic comb filter. The bionic comb filter comprises a power circuit, a single-chip microcomputer, a signal detector, a first-stage filtering and amplifying circuit, a second-stage filtering and amplifying circuit, a narrow-band filtering circuit, an emitter follower, a detection smoothing circuit and a channel selection switch circuit. According to the bionic comb filterprovided by the invention, the auditory system of the bionic organism can realize detection of weak signals, the popularization and application prospects are wide, and the bionic comb filter is not only suitable for high-precision detection and estimation of underwater acoustic characteristics of a target in water, but also can be popularized to various fields such as a space magnetic field, an electric field and even a seismic wave field. The bionic comb filter is suitable for field signal detection in a one-dimensional space, and can be popularized to two-dimensional and even multi-dimensional signal detection estimation.

Description

technical field [0001] The invention relates to the technical field of signal detection, in particular to a bionic comb filter. Background technique [0002] The acoustic field detection of stealth submarines and ships sailing at low speed poses a serious challenge to traditional underwater acoustic detection technology. The interaction of ocean multipath effect, environmental noise, target self-noise and multi-target aliasing signals greatly reduces the signal-to-noise ratio, and also reduces the probability of mine strikes on low-speed and quiet targets. Passive weak signal detection technology is a difficult problem in the field of signal processing, and it is also an urgent problem to be solved in the development of modern naval mine weapons; however, the filters and related structures used in traditional signal detection methods are difficult to detect weak signals. Contents of the invention [0003] In order to solve the above problems, the object of the present inv...

Claims

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Application Information

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IPC IPC(8): H03H17/02
CPCH03H17/02
Inventor 张宁林朋飞林春生
Owner NAVAL UNIV OF ENG PLA