A time-reflective underwater acoustic communication device using a vertical receiving array
A technology of underwater acoustic communication and receiving array, applied in electrical components, transmission systems, etc., can solve problems such as the design of non-communication devices, and achieve the effect of compact device structure
Active Publication Date: 2016-06-29
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology
[0005] At present, there are many literatures and patents on underwater acoustic time-to-return communication. These literatures and patents cover the theory, method and principle experiment of time-to-return communication, but there is no report on the design of related communication devices.
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[0017] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0018] figure 1 It is a schematic diagram of the anti-water acoustic communication device, which is composed of a tensile receiving array 1, a transmitting and receiving transducer 2, a watertight electronic cabin 3, and a tensile and watertight cable 4. in:
[0019] (1) Tensile receiving array 1
[0020] The tensile receiving array 1 is an oil-filled hydrophone array, one end of which is connected to the transceiving transducer 2 through a tensile watertight connector 5, the array is threaded with a Kevlar fiber rope, and the other end is equipped with an eye screw 11, Can hang heavy objects or pull up floats.
[0021] In this embodiment, the center frequency of the communication signal is 8.0 kHz, and the wavelength is 0.1875 meters. In order to reduce the correlation between the signals received by each array element, the distance d between the array el...
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The invention relates to a time reversal water sound communication apparatus applying a vertical receiving array. The apparatus comprises a tension receiving array, a transmit-receive integrated energy transducer, a water density electronic cabin and a tension water density cable. One end of the tension receiving array is connected with the transmit-receive integrated energy transducer through a tension water density connector, and the other end of the tension receiving array is provided with a suspension ring screw; one end of the transmit-receive integrated energy transducer is connected with the water density electronic cabin, and the other end of the transmit-receive integrated energy transducer is connected with the tension receiving array through the tension water density connector; the tension water density cable is connected with the water density electronic cabin through a tension connector and is used for power supply and external data exchange of the water density electronic cabin; and the tension receiving array is internally provided with a tension fiber rope in a penetrating manner and enters the water density electronic cabin through the cavity of the transmit-receive integrated energy transducer. The advantages are as follows: the time reversal water sound communication apparatus provided by the invention is compact in structure, the whole communication apparatus can be vertical in water without other auxiliary ropes, time space focusing gains can be provided for time reversal processing, and the practicality is good.
Description
technical field [0001] The invention relates to underwater acoustic communication, more precisely, it is a time-reversal underwater acoustic communication device using a vertical receiving array. Background technique [0002] The underwater acoustic channel is space-time and frequency-varying, and its interface reflection and sound ray bending lead to multi-channel spread. Intersymbol interference caused by multi-channel spread is one of the main obstacles to underwater acoustic communication. In order to obtain high-speed, low-error communication, inter-symbol interference must be suppressed. Time reverse (timereversal) processing technology is a simplified processing technology that can suppress inter-symbol interference. Its essence is to use the time-reverse space-time focusing characteristics of underwater acoustic physics to partially equalize the channel. It is a robust equalization technology. [0003] In principle, time-reversal communication can be divided into tw...
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IPC IPC(8): H04B13/02
Inventor 张宏滔王忠康岳志杰谢哲孟洪李建成高少波汪雪莲
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP