Ice-based underwater sound source detection device and method
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A detection device and sound source technology, which is applied to measurement devices, radio wave measurement systems, instruments, etc., can solve the problems of large long-term observation equipment, difficulty in returning detection information in time, and limited detection range.
Active Publication Date: 2021-09-10
HARBIN ENG UNIV
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[0005]
The purpose of the present invention is to solve the problem of inflexible deployment of the conventional sub-ice sound source detection method due to the existence of the ice layer, limited deployment time, difficulty in timely return of detection information, and low deployment reli...
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Embodiment 1
[0033] combine Figure 1 to Figure 2 , the present invention is composed of an ice drilling metal head 1, a displacement pick-up sensor 2, an electronic cabin 3, a counterweight cabin 4, a buffer layer 5, a battery cabin 6, a signal processing module 7, a communication module 8, an external sensor module 9, and a power management module 10. Small wind power generator 11, stabilizer fin 12, electronic release device 13, radio frequency antenna 14, throwing parachute 15 constitute. The displacement pick-up sensor 2 is closely connected with the ice-drilling metal head 1. The bottom shape of the electronic cabin 3 has a section of flat blocking area to prevent penetrating the ice layer when throwing. The center of gravity, the upper layer is the buffer layer 5 used to prevent falling from impacting the inside, and the upper layer is the battery compartment 6, and the battery compartment 6 is placed at the bottom of the electronic compartment 3. Similarly, in order to maintain the...
Embodiment 2
[0034] Embodiment two: detection method of the present invention comprises the following steps:
[0035] (1) The equipment is carried by the aircraft. Over the predetermined ice area, start the power management module 10 and the external sensor module 9, and set the external sensor release parameters according to the flight altitude. At this time, the signal processing module 7 is not turned on.
[0036] (2) thrown by the aircraft, under the effect of the counterweight cabin 4 and the balance tail 12, the detector falls freely for a period of time, and then opens the parachute 9 for throwing objects.
[0037] (3) The external sensor module 9 carries out program judgment, and if it reaches a predetermined height, it controls the electronic release device 13 to open, discards the canopy of the throwing parachute, and the detector falls freely.
[0038] (4) After being released at a high altitude, the ice drilling metal head 1 guides the detector to be fixed vertically on the ice s...
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Abstract
The invention provides an ice-based underwater sound source detection device and method. The method are a technology for detecting a sound source in water of an ice layer by using an acoustic method, a detector is carried and put by a fixed-wing aircraft or a helicopter, and electronic equipment is started after the head of the detector drills into the ice layer; and an underwater target is detected by utilizing displacement generated by conversion of underwater sound energy and fluctuation energy in an ice layer in the ice layer, and a processing result is transmitted. A head part is a high-strength metal head and is used for drilling into the ice layer; a rear part is a metal rod made of a sound-transmitting hollow high-strength material and is used for receiving displacement information in the ice layer; and a tail part is a waterproof electronic cabin, the electronic cabin is provided with a balance empennage and an object throwing umbrella, the detector is ensured to be finally vertically embedded into an ice layer as far as possible, a wind power generation module is provided, continuous energy supply is ensured, and a radio frequency antenna is used for positioning and communication. Compared with the existing underwater acoustic passive detection method, the method can greatly reduce the risk of laying the detection equipment in the ice region environment, and has the characteristics of flexibility, rapidness and large-range joint deployment.
Description
technical field [0001] The invention relates to an ice-based underwater sound source detection device and a detection method thereof, which belong to the field of underwater sound detection, more precisely, belong to the category of passive detection of underwater sound sources. Background technique [0002] The sound source detection of ice shelf, ice floes and subglacial Hanoi has an important reference function for subice target detection, emergency rescue and disaster relief, information acquisition and strategic deployment. Underwater sound sources can be divided into active sound sources and passive sound sources according to the way of cooperation: active sound sources cooperatively send sound waves to achieve their own positioning, navigation and information transmission; passive sound sources are composed of their own mechanical vibration and flow noise. Cooperatively radiate sound waves into the water, however, this is the signal of interest for passive detection. ...
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