Digital acquisition device and underwater acoustic towed array device
A technology of digital acquisition and towed array, which is applied in the field of geophysical exploration and investigation, can solve the problems of underwater acoustic analog signal interference, underwater acoustic digital signal distortion, resolution reduction, etc., to reduce transmission loss, transmission distance, and transmission channel The effect of noise disturbance
Pending Publication Date: 2018-04-17
THE FIRST INST OF OCEANOGRAPHY SOA +2
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The long-distance transmission of analog electrical signals causes attenuation and interference to the underwater acoustic analog signal, resulting in distortion and resolution reduction of the final underwater acoustic digital signal, reducing the performance of acoustic wave acquisition
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The purpose of the present invention is to provide a digital acquisition device and an underwater acoustic towed array device to reduce the attenuation and interference caused by long-distance analog electrical signal transmission and improve the performance of acoustic wave acquisition.
[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in det...
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The invention discloses a digital acquisition device, which is applied to an underwater acoustic towed array. The digital acquisition device comprises multiple data acquisition and processing mechanisms, multiple hydrophone channels and multiple hydrophones, wherein each hydrophone is used for converting underwater acoustic signals to underwater acoustic analog signals; each hydrophone channel isused for accommodating the hydrophone and receiving the underwater acoustic analog signals sent by each hydrophone; the data acquisition and processing mechanisms are connected with the multiple hydrophone channels for conditioning and converting the multiple underwater acoustic analog signals sent by the hydrophones to acquire multiple channels of underwater acoustic digital signals and packagingthe multiple channels of underwater acoustic digital signals. Through arranging the data acquisition and processing mechanisms to digitize the acquired underwater acoustic analog signals, the analogsignal transmission distance is reduced, and the transmission loss and the transmission channel noise interference are reduced maximally.
Description
technical field [0001] The invention relates to the technical field of geophysical exploration and investigation, in particular to a digital acquisition device and an underwater acoustic towed array device. Background technique [0002] Most of the conventional underwater acoustic acquisition and acoustic streamers use multiple hydrophones connected in series and parallel to receive underwater acoustic signals, and pass the received underwater acoustic signals in the form of underwater acoustic analog signals through tens of meters or even hundreds of meters of cables. Transfer to collection station for further digitization. The long-distance transmission of analog electrical signals causes attenuation and interference to the underwater acoustic analog signal, resulting in distortion and resolution reduction of the finally obtained underwater acoustic digital signal, which reduces the performance of acoustic wave acquisition. Contents of the invention [0003] The purpose...
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Login to View More IPC IPC(8): G01S7/526G01V1/38
CPCG01S7/526G01V1/38
Inventor 裴彦良刘保华阚光明连艳红陈自力解秋红刘凯周洋
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