Low-frequency hanging sound source
A low-frequency, sound source technology, applied in the field of underwater acoustic communication and underwater acoustic detection, to achieve the effect of improving gain and signal-to-noise ratio, improving concealment, and long communication distance
Active Publication Date: 2021-06-08
中科长城海洋信息系统有限公司
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[0004]
For the above application scenarios, the present invention aims to provide a device to solve the problems described above
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[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0019] In order to improve the signal-to-noise ratio of the underwater acoustic signal and the concealment of the underwater acoustic communication, the inventor desig...
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The invention provides a low-frequency hanging sound source, and the sound source comprises a low-frequency transmitting transducer, a low-frequency focusing sound reflector and an adjustable support, wherein the low-frequency transmitting transducer is located in the middle of the low-frequency focusing sound reflector, an arc-shaped concave cavity is formed in the side, facing the low-frequency transmitting transducer, of the low-frequency focusing sound reflector, sound signals transmitted by the low-frequency transmitting transducer are focused and reflected by the arc-shaped concave cavity, and the low-frequency focusing sound reflector is fixedly connected with the adjustable support. The low-frequency hoisting sound source can be used for a transmitting end of low-frequency underwater acoustic communication, compared with an omni-directional sound source, the gain and the signal-to-noise ratio of a transmitted signal can be improved, a farther communication distance can be achieved, meanwhile, the signal is transmitted at one side, and the concealment of communication is greatly improved; and the emission focusing and the emission direction can be adjusted through the adjustable bracket, so that the device is particularly suitable for the scenes of ultra-long-distance signal emission and covert communication.
Description
technical field [0001] The invention relates to the technical fields of underwater acoustic communication and underwater acoustic detection, in particular to a low-frequency hoisting sound source. Background technique [0002] The realization of underwater remote communication and remote detection functions relies on underwater acoustic related technologies, especially low-frequency underwater acoustic signals. Low-frequency acoustic signals have the least loss when transmitted in the ocean and can travel the farthest distance. [0003] In the existing underwater acoustic communication and underwater acoustic detection systems, the underwater acoustic transmitter and the underwater acoustic transducer are the core components of the underwater acoustic equipment, which determine the core performance indicators of the entire sonar system. High-power low-frequency sound sources mostly emit omnidirectionally, and are limited by low-frequency acoustic emission technology. projec...
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IPC IPC(8): H04B13/02H04B11/00H04R1/20
CPCH04B13/02H04B11/00H04R1/20Y02A90/30
Inventor 邓坤伦吴建波刘伟升王佳安唐校兵李友如
Owner 中科长城海洋信息系统有限公司