Acoustic compatibility management and control design method for tug linear array of bulbous bow underwater acoustic equipment

Abstract

The invention discloses an acoustic compatibility management and control design method for a towed linear array of bulbous bow underwater acoustic equipment, and belongs to the technical field of ship acoustic compatibility design, and the method comprises the following steps: constructing a test environment, and checking the interference condition of the bulbous bow underwater acoustic equipment to the towed linear array through echo work; and formulating management and control measures according to the interference condition. The scheme is used for guiding the acoustic compatible management control design of the ship-borne bulbous bow underwater acoustic equipment and the towed linear array, and the compatible use of the bulbous bow underwater acoustic equipment and the towed linear array can be ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship acoustic compatibility design, and particularly relates to a method for acoustic compatibility management and control design of a spherical bow underwater acoustic device for a towed array. Background Art

[0002] To cope with various underwater threats such as underwater submarines, torpedoes, UUVs, frogmen, and mines, surface ships usually need to have various underwater acoustic functions such as submarine detection, torpedo detection and countermeasure, UUV and frogman detection, and underwater acoustic navigation. Therefore, multiple underwater acoustic devices are usually equipped. Typically, ships such as the Arleigh Burke-class destroyer in the United States and the FREMM-class frigate in Europe are equipped with spherical bow underwater acoustic devices and towed arrays, which may cause mutual interference between underwater acoustic devices, resulting in the inability to fully utilize the effectiveness of related devices, that is, the "acoustic compatibility" problem.

[0003] Both the spherical bow underwater acoustic device and the towed array are important underwater acoustic devices on surface ships. Among them, the spherical bow underwater acoustic device mainly works by echo and is installed in the bulbous bow of the ship. It has various underwater acoustic functions and is mainly used for submarine detection. In recent years, the spherical bow underwater acoustic device has developed in the direction of low frequency, large aperture, and high power. For example, the working frequency band of the SQS-53C spherical bow underwater acoustic device in the United States has dropped to 3.5 kHz; the towed underwater acoustic device is towed hundreds or even thousands of meters behind the ship during operation. It is reported that the working frequency band is also continuously expanding; as a result, the interference risk of the spherical bow underwater acoustic device to the towed array is continuously increasing. In view of the current complex acoustic interference situation of the spherical bow underwater acoustic device to the towed array, the two acoustic devices cannot be used compatibly, and there is no mature acoustic compatibility management and control method for reference and adoption. The present invention proposes a design method for acoustic compatibility management and control of the spherical bow underwater acoustic device to the towed array, which can be used for the acoustic compatibility management and control design of the spherical bow underwater acoustic device to the towed array on surface ships. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method for acoustic compatibility management and control of a spherical bow underwater acoustic device for a towed array, which is used for the acoustic compatibility management and control design of the spherical bow underwater acoustic device and the active and passive towed array on surface ships.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention provides a method for acoustic compatibility management and control of a spherical bow underwater acoustic device for a towed array, including the following steps:

[0007] Step 1: Construct a full-scale ship test system on the lake, and place the spherical bow underwater acoustic device and the towed array at a preset depth in the water;

[0008] Step 2: Check the interference of the bow sonar equipment on the towed array through the active transmission of the bow sonar equipment and the passive reception of the towed array.

[0009] Step 3: Formulate control measures according to the interference situation. The control measures include that when the bow sonar equipment works in echo mode and the towed array receives normally, the acoustic compatibility management control machine sends emission control commands and regulates the gain to the bow sonar equipment and the towed line array.

[0010] Further, the control measures are controlled by the acoustic compatibility management control machine. The control command information of the acoustic compatibility management control machine is transmitted through the network or serial port. When the network delay is less than the sound interference propagation time, the network is used to transmit the acoustic compatibility management control command information. Otherwise, the serial port is used to transmit the relevant information.

[0011] Further, the acoustic compatibility management control machine determines the management control limit through sea trials. Specifically, in the case of sea trials, the bow sonar equipment is placed in different frequencies, angles, etc. in manual working mode and emits sequentially. Observe the interference situation at the display and control interface of the towed array, make interference judgments, and store the interference situation in the acoustic compatibility management control machine.

[0012] Further, the lake sea trial system includes: a real ship, which is set on the lake. The real ship is provided with a mobile channel and a test platform that can move along the mobile channel. The test platform is provided with a bow sonar equipment. The test platform is connected with a towed array through a tow cable. The end of the towed array far from the tow cable is connected to the shore slope through a towing rope. There is a test ship on one side of the towed array, and a hydrophone is loaded on the test ship.

[0013] Further, a plurality of mounting blocks are equidistantly installed on the towed array along the extension direction. The mounting block is provided with a threaded hole, and an installation ring is threadedly connected in the threaded hole. The outer peripheral wall of the installation ring is provided with threads matching the threaded hole. The inner peripheral wall of the installation ring is connected with an installation sleeve through an elastic member. There is an annular gap between the installation sleeve and the installation ring. A plurality of elastic members are circumferentially arranged around the axis of the installation ring in the annular gap. A positioning rope is arranged in the installation sleeve. The first end of the positioning rope is connected with a floating ball that can float on the water surface, and the second end of the positioning rope passes through the threaded hole and is connected with a counterweight.

[0014] Further, two threaded holes symmetrical about the towed array are provided on the mounting block.

[0015] Further, the mounting block includes two symmetrically arranged clamping blocks, and the two clamping blocks are connected by bolts to form a through hole for installing the towed array.

[0016]

[0017] ​The beneficial effects of the present invention are as follows:

[0018] This solution is used to guide the acoustic compatibility management and control design of shipborne towed sonobuoys and sound detectors, and can ensure the compatible use of bow underwater acoustic equipment with the towed array.

[0019] Other advantages, objectives and features of the present invention will be described in the subsequent specification, and to some extent will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Brief Description of the Drawings

[0020] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 It is a top view of the full-scale ship test system of the embodiment of the present invention;

[0022] Figure 2 It is a side view of the full-scale ship test system of the embodiment of the present invention;

[0023] Figure 3 It is a schematic installation diagram of the mounting block of the embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the mounting ring of the embodiment of the present invention.

[0025] The markings in the drawings are as follows: full-scale ship 1, moving channel 101, test platform 2, bow underwater acoustic equipment 3, tow cable 4, towed array 5, threaded hole 501, mounting ring 502, elastic member 503, mounting sleeve 504, positioning rope 505, float 506, counterweight 507, mounting block 508, clamping block 509, towing rope 6, test ship 7. Detailed Embodiments

[0026] As Figures 1 to 4 shown, the present invention provides a method for acoustic compatibility management and control design of a bow underwater acoustic equipment for a towed array, including the following steps:

[0027] S1: Construct a full-scale ship test system, place the bow underwater acoustic equipment, acoustic baffle, towed array and standard hydrophone at a preset depth in water, and measure the hydrological conditions of the test sea area through a sound field analyzer;

[0028] S2: Check the interference of the bow sonar equipment on the towed array: Set the working mode of the towed array to the echo working mode, set the gain of the receiving channels of the towed array so that the receiving channels are in an unsaturated state, preset the frequency, pulse width, and range of the towed array, start and stop the transmission. Operate the bow sonar equipment to perform echo operation with a pitch angle of 0° and full power. Adjust the transmission frequency, transmission mode, and transmission fan according to the interference situation, and observe and record the interference phenomena of the bow sonar equipment on the noise and echo working mode of the towed array;

[0029] S3: Check the interference of the towed array on the bow sonar equipment: The towed array emits at full power and a pitch angle of 0°. Adjust the transmission power and transmission pulse width according to the test environment. Disconnect the cable between the dry end junction box and the transmitting preamplifier cabinet of the bow sonar equipment, and use a collector to collect the output signals at the back end of the transducers in different directions at the dry end junction box of the bow sonar equipment. The azimuth and number of layers of the transducers can be selected or adjusted according to the test requirements and on-site conditions. Set the working mode of the bow sonar equipment to the echo working mode, set the gain of the receiving channels of the bow sonar equipment so that the receiving channels are in an unsaturated state, preset the frequency, pulse width, and range of the bow sonar equipment, start and stop the transmission. Operate the towed array to perform echo operation with a pitch angle of 0° and full power. Judge the interference of the towed array on the echo working mode of the bow sonar equipment by adjusting the transmission frequency and transmission pulse width;

[0030] S4: Develop control measures according to the interference situation: The control measures include that when both the bow sonar equipment and the towed array are in echo operation or one is in echo operation and the other is in noise operation, the acoustic compatibility management control machine sends control commands for adjusting the gain and transmission to the bow sonar equipment and the towed array. The specific gain adjustment values can be determined according to S2 and S3;

[0031] The transmission method of the management control command information is as follows: Compare the transmission delay of the network with the propagation time of the acoustic interference. When the network delay is less than the propagation time of the acoustic interference, the network is used to transmit the acoustic compatibility management control command information; otherwise, the serial port is used to transmit the relevant information;

[0032] Verify the management control process and the correctness of the interface during onshore joint debugging: The display control equipment and signal processor of the bow sonar equipment for the towed array participate in the onshore joint debugging test. Through the form of simulation, verify the correctness of the management control process and the relevant interface information;

[0033] Determine the management control limit through sea trial: In the actual ship situation, various interference modes and transmission frequencies of the towed array are sequentially transmitted. By manually adjusting, the bow sonar equipment is made to work in each range, and the interference situation of the towed array on the bow sonar equipment is recorded. The bow sonar equipment works in the manual working mode, is placed in different ranges, and is sequentially transmitted. The interference situation is observed on the display and control interface of the towed array, and interference judgment is carried out. The specific interference situation is bound into the acoustic compatibility management control machine.

[0034] This solution is used to guide the acoustic compatibility management control design of the shipborne towed array and the bow sonar equipment, and can ensure the compatible use of the bow sonar equipment with the towed array.

[0035] In an embodiment of the present invention, the sea trial system includes: a real ship 1, the real ship 1 is set on a lake, a moving channel 101 is provided on the real ship 1, and a test platform 2 capable of moving along the moving channel 101 is provided on the real ship 1. A bow sonar equipment 3 is provided on the test platform 2. The test platform 2 is connected with a towed array 5 through a tow cable 4. The end of the towed array 5 far from the tow cable 4 is connected with a shore slope through a towing rope 6. A test ship 7 is provided on one side of the towed array 5, and a hydrophone is loaded on the test ship 7.

[0036] In this solution, as Figure 1 , the bow sonar equipment 3 is hoisted into the lake through the fixed hoisting device on the real ship 1 via the measuring well, and the laying depth is the minimum value that can ensure its full-power transmission; the towed array 5 is laid underwater about 10 - 20 m deep through the real ship 1, the shore slope, the tow cable 4, the floating ball, the towing rope 6, etc.; the hydrophone is laid at the position where the distance between the towed array 5 and the bow sonar equipment 3 is the smallest through the test ship 7, and the laying depth is basically the same as that of the towed array 5.

[0037] In an embodiment of the present invention, a plurality of mounting blocks 508 are equidistantly installed on the towed array 5 along the extending direction. Threaded holes 501 are provided on the mounting blocks. Threaded connection is made between the threaded holes 501 and mounting rings 502. Threads matching the threaded holes 501 are provided on the outer peripheral wall of the mounting rings 502. An elastic member 503 is connected between the inner peripheral wall of the mounting rings 502 and a mounting sleeve 504. An annular gap is provided between the mounting sleeve 504 and the mounting rings 502. A plurality of elastic members 503 are circumferentially provided in the annular gap with the axis of the mounting rings 502 as the center. A positioning rope 505 is provided in the mounting sleeve 504. The first end of the positioning rope 505 is connected with a floating ball 506 capable of floating on the water surface, and the second end of the positioning rope 505 passes through the threaded hole 501 and is connected with a counterweight 507.

[0038] In this solution, as Figure 2, when deploying the towed array 5, install the installation sleeve 504 on the positioning rope 505. Fix the positioning rope 505 on the towed array 5 by threadedly connecting the installation ring 502 with the threaded hole 501, so that the buoy 506 floats on the water surface, and the counterweight 507 extends below the towed array 5. After the installation of the positioning rope 505 is completed, the towed array 5 can be straightened by tightening the tow cables 4 and the towing ropes 6 at both ends of the towed array 5. By setting the installation ring 502 and the elastic member 503 in this solution, the influence of water flow and underwater organisms on the positioning rope 505 can be reduced, thereby ensuring the stability of the towed array 5 in water.

[0039] In an embodiment of the present invention, the installation block 508 includes two symmetrically arranged clamping blocks 509. The two clamping blocks 509 are connected by bolts and form a through hole for installing the towed array 5, so as to facilitate the installation of the installation block 508 on the towed array 5. Two threaded holes 501 are provided on the installation block 508, and the two threaded holes 501 are symmetrically arranged with respect to the towed array 5.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A design method for acoustic compatibility control of a ball bow underwater acoustic device for a towed line array, characterized in that, It includes the following steps: Step 1: Construct a full-scale ship trial system on the lake, and place the bow sonar equipment and the towed array at a preset depth in the water; Step 2: Check the interference of the bow sonar equipment on the towed array through the active transmission of the bow sonar equipment and the passive reception of the towed array; Step 3: Formulate control measures according to the interference situation. The control measures include that when the bow sonar equipment works in echo mode and the towed array receives normally, the acoustic compatibility management control machine sends emission control commands and adjusts the gain to the bow sonar equipment and the towed array.

2. The acoustic compatibility control design method of the ball bow underwater acoustic equipment for the towed array according to claim 1, characterized in that: The control measures are controlled by the acoustic compatibility management control machine. The control command information of the acoustic compatibility management control machine is transmitted through the network or serial port. When the network delay is less than the sound interference propagation time, the network is used to transmit the acoustic compatibility management control command information; otherwise, the serial port is used to transmit the relevant information.

3. The acoustic compatibility control design method of the spherical bow underwater acoustic equipment for the towed array according to claim 1, characterized in that The acoustic compatibility management control machine determines the management control limit through full-scale ship trials. Specifically, in the case of full-scale ship trials, the bow sonar equipment is placed in a manual working mode at different frequencies, angles, etc., and is sequentially emitted. The interference situation is observed at the display and control interface of the towed array, and interference judgment is carried out. The interference situation is stored in the acoustic compatibility management control machine.

4. The acoustic compatibility control design method of the spherical bow underwater acoustic equipment for the towed array according to claim 1, characterized in that The full-scale ship trial system on the lake includes: a full-scale ship, which is set on the lake. There is a mobile passage on the full-scale ship and a test platform that can move along the mobile passage. The bow sonar equipment is provided on the test platform. The test platform is connected with a towed array through a tow cable. The end of the towed array far from the tow cable is connected to the shore slope through a tow rope. There is a test ship on one side of the towed array, and a hydrophone is loaded on the test ship.

5. The acoustic compatibility control design method of the spherical bow underwater acoustic equipment for the towed line array according to claim 4, characterized in that, A plurality of mounting blocks are equidistantly installed on the towed array along the extension direction. Threaded holes are provided on the mounting blocks, and mounting rings are threadedly connected in the threaded holes. Threads matching the threaded holes are provided on the outer peripheral wall of the mounting rings. The inner peripheral wall of the mounting rings is connected with a mounting sleeve through elastic members. An annular gap is provided between the mounting sleeve and the mounting ring. A plurality of elastic members are circumferentially provided in the annular gap with the axis of the mounting ring as the center. A positioning rope is provided in the mounting sleeve. The first end of the positioning rope is connected with a floating ball that can float on the water surface, and the second end of the positioning rope passes through the threaded hole and is connected with a counterweight.

6. The acoustic compatibility control design method of the spherical bow underwater acoustic equipment for the towed array according to claim 5, characterized in that, Two threaded holes symmetrical about the towed array are provided on the mounting block.

7. The acoustic compatibility control design method of the ball bow underwater acoustic equipment for the towed array according to claim 6, characterized in that The mounting block includes two symmetrically arranged clamping blocks, and the two clamping blocks are connected by bolts to form a through hole for mounting the towed array.

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