Noise reduction and interference prevention device for single carrier frequency domain equalization system based on underwater acoustic communication

Abstract

The invention discloses a noise reduction anti-interference device for a single carrier frequency domain equalization system based on underwater acoustic communication, and relates to the technical field of underwater acoustic communication. The device comprises a cylindrical shell, an angle adjusting mechanism, a water conveying pipe and a single-carrier frequency domain balancing system, and the inner side of the cylindrical shell is provided with a first separation disc and a second separation disc side by side in the axial direction; the first separation disc and the second separation disc divide the interior of the cylindrical shell into a water storage cavity between the first separation disc and the second separation disc, a first sealing cavity close to one side of the first separation disc and a second sealing cavity close to one side of the second separation disc; one side face of the second separation disc is fixedly connected with a water conveying pipe in the circumferential direction. Through the arrangement of the angle adjusting mechanism, the first separation disc, the second separation disc, the noise reduction layer, the flow guide convex strips and the driving assembly and the combination of the components, the device has good anti-interference and noise reduction effects on the single-carrier frequency domain equalization system in the use process.

Description

Technical Field

[0001] The present invention belongs to the technical field of underwater acoustic communication, and in particular relates to a noise reduction and interference prevention device for a single-carrier frequency domain equalization system based on underwater acoustic communication, and is mainly used for noise reduction and interference prevention of a single-carrier frequency domain equalization system in underwater acoustic communication. Background Art

[0002] Underwater acoustic communication is a technology for sending and receiving information underwater. Its working principle is to convert text, voice, images, and other information into electrical signals through an electrical transmitter. After the information is digitized by an encoder, a transducer converts the electrical signals into acoustic signals. Currently, single-carrier frequency domain equalization systems are commonly used in existing underwater acoustic communications. Single-carrier frequency domain equalization technology has a strong ability to combat frequency-selective fading channels while ensuring high-speed and large-capacity communication. Compared with time-domain equalization, it has the advantage of low computational complexity. Compared with orthogonal frequency division multiplexing technology, it can reduce the peak-to-average power ratio, thereby reducing the requirements for the power amplifier at the receiving end. However, existing single-carrier frequency domain equalization systems have the following shortcomings:

[0003] 1. In the existing single-carrier frequency domain equalization system, due to the characteristics of seawater itself, sound waves will be partially reflected and refracted when they are transmitted in water. The reflected and refracted sound waves have a significant interference effect on the original signal.

[0004] 2. Existing single-carrier frequency domain equalization systems are in motion most of the time during use. The friction between the device and the seawater, as well as the movement of the ship, will generate a certain amount of noise. This noise is essentially sound waves. When it is transmitted to the equipment, it will have a certain impact on the sound waves emitted by the single-carrier frequency domain equalization system in the equipment.

[0005] Therefore, it is necessary to improve the existing technology to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication, which has a strong anti-interference effect and a good noise reduction effect, and avoids the influence of noise on signal sound waves. It solves the problem that the existing single-carrier frequency domain equalization system has a weak overall anti-interference effect when in use and the problem that the existing single-carrier frequency domain equalization system has a poor noise reduction effect during use.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention provides a noise reduction and interference prevention device for a single-carrier frequency domain equalization system based on underwater acoustic communication, comprising a cylindrical housing, an angle adjustment mechanism, a water pipe, and a single-carrier frequency domain equalization system. A first separating disc and a second separating disc are arranged side by side along the axial direction on the inner side of the cylindrical housing. The first separating disc and the second separating disc respectively divide the interior of the cylindrical housing into a water storage chamber between the first separating disc and the second separating disc, a first sealed chamber near one side of the first separating disc, and a second sealed chamber near one side of the second separating disc.

[0009] A water pipe is fixedly connected to one side surface of the second separating disc along the circumferential direction, and one end of the water pipe extends toward the second sealed cavity and passes through the cylindrical shell to the outside of the cylindrical shell;

[0010] The water delivery pipe is connected to the interior of the water storage cavity;

[0011] The water pipe is also provided with an angle adjustment mechanism, which includes a connecting rod, a rotating assembly and a water outlet head, wherein the rotating assembly and the water outlet head are respectively located on both sides of the connecting rod, wherein the rotating assembly is concentrically fixedly sleeved on the connecting rod;

[0012] One end of the water outlet head is coaxially fixedly connected to a through pipe, and the through pipe is connected to the interior of the water outlet head. A connecting strip is radially fixedly connected to the inner wall of the other end of the through pipe; one end of the connecting rod is fixedly connected to the middle position of one side of the connecting strip, and the other end of the connecting rod is slidably sleeved in the first separating plate;

[0013] A water outlet hole communicating with the interior of the water outlet is also provided on the side wall of the water outlet;

[0014] The rotating assembly is located inside the water storage chamber, while the water outlet is located outside the cylindrical shell;

[0015] A driving assembly is further provided inside the water storage chamber, and a plurality of rotating assemblies are evenly distributed along the circumferential direction and matched on the outside of the driving assembly, and the axial rotation of the driving assembly can drive the axial synchronous rotation of the plurality of rotating assemblies;

[0016] A noise reduction layer is provided inside the cylindrical shell, and an anti-interference layer is provided inside the cylindrical shell outside the noise reduction layer; a plurality of guide ridges are also uniformly distributed along the circumferential direction on the outer wall of the cylindrical shell.

[0017] Furthermore, the rotating assembly consists of a first rotating disk and first meshing teeth uniformly distributed along the circumferential direction on the outer wall of the first rotating disk; the driving assembly consists of a first driving disk and second meshing teeth uniformly distributed along the circumferential direction on the outer wall of the first driving disk.

[0018] Furthermore, the first meshing teeth and the second meshing teeth are meshed with each other.

[0019] Furthermore, the rotating assembly consists of a second rotating disk and a groove circumferentially arranged in the middle of the outer wall of the second rotating disk; the driving assembly consists of a second driving disk and a convex ring circumferentially arranged in the middle of the outer wall of the second driving disk.

[0020] Furthermore, the convex ring is loosely fitted in the groove, and the outer side wall of the convex ring is in contact with the inner bottom surface of the groove.

[0021] Furthermore, a rotating shaft is coaxially provided on one side surface of the driving assembly, one end of the rotating shaft passes through the first separating disk and extends into the first sealed cavity to be engaged with the output end of the motor, and the motor is fixedly connected to the first separating disk.

[0022] Furthermore, a water pump is provided inside the first sealed cavity above the motor, and the water pump is fixedly connected to the first separating plate. The water inlet end of the water pump is connected to a water inlet pipe, and the water outlet end of the water pump is connected to a water outlet pipe. The water inlet pipe is connected to the outside of the cylindrical shell, and the water outlet pipe is connected to the water storage cavity.

[0023] Furthermore, the through pipe is slidably fitted inside the water pipe, and a first limiting ring is fixedly fitted on the outer wall of the through pipe located inside the water pipe, and a second limiting ring is circumferentially arranged on the inner wall of the water pipe between the first limiting ring and the water outlet head.

[0024] Furthermore, the single-carrier frequency domain equalization system is located inside the second sealed cavity and fixedly mounted on the second separation plate, and one end of the transceiver antenna provided on the single-carrier frequency domain equalization system passes through the cylindrical shell and extends to the outside of the cylindrical shell.

[0025] Furthermore, the noise reduction layer is configured as a hollow cylinder with closed ends. The noise reduction layer is composed of a plurality of hexagonal frames, and adjacent hexagonal frames are connected by sharing a common edge.

[0026] The present invention has the following beneficial effects:

[0027] 1. The present invention provides a water pump. Under the action of the water pump itself, seawater enters through the water inlet pipe and is discharged into the water storage chamber through the water outlet pipe. The seawater continuously pumped in by the water pump generates a certain pressure on the seawater in the water storage chamber. Under the action of the pressure, the seawater in the water storage chamber is transported through the water delivery pipe and finally discharged from the outlet hole on the water outlet head. The drive assembly is configured to achieve forward and reverse rotation of the drive assembly under the drive of the motor. Because the drive assembly and the rotating assembly cooperate to achieve the rotation of the rotating assembly, the water outlet head will rotate accordingly to adjust the direction of the water outlet hole. By adjusting the direction of the water outlet hole, the seawater discharged from the water outlet head will form a continuously changing water flow, thereby continuously changing the direction of refraction and reflection of sound waves by the seawater, preventing the sound waves from always propagating at a certain refraction or reflection angle. In other words, it prevents the signal points of the refracted or reflected sound waves from being connected into signal bands. The conduction of a single signal point through water will gradually weaken. This configuration can effectively prevent the interference of the refracted or reflected sound wave bands on the original signal bands, thereby improving the anti-interference capability of the present device.

[0028] 2. The present invention can form a honeycomb noise reduction layer inside the cylindrical shell through the setting of the noise reduction layer itself. The characteristics of the honeycomb noise reduction layer itself can achieve a good noise reduction effect. At the same time, the setting of the guide ribs can guide the water flow well when the device moves, avoiding the collision between seawater and equipment to generate large noise. This setting makes the noise reduction effect of the device good and greatly improves the interference of noise on the sound wave source.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a structural diagram of a noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication in Example 1;

[0032] Figure 2 for Figure 1 Axial cross-sectional view of

[0033] Figure 3 Schematic diagram of the internal structure of the first sealed cavity;

[0034] Figure 4 Schematic diagram of the internal structure of the water storage chamber;

[0035] Figure 5 Schematic diagram of the internal structure of the second sealed cavity;

[0036] Figure 6 Schematic diagram of the structure of the angle adjustment mechanism in Example 1;

[0037] Figure 7 Schematic diagram of the structure of the angle adjustment mechanism in Example 2;

[0038] Figure 8 Schematic diagram of the cooperation between the angle adjustment mechanism and the drive assembly in Example 2;

[0039] Figure 9 Schematic diagram of the overall structure of the noise reduction layer.

[0040] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0041] 1. Cylindrical shell; 2. Angle adjustment mechanism; 3. Water pipe; 4. Single carrier frequency domain equalization system; 5. Anti-interference layer; 6. Noise reduction layer; 7. Motor; 8. Water pump; 9. First drive plate; 10. Second drive plate; 101. Guide rib; 102. First separator plate; 103. Second separator plate; 104. First sealed chamber; 105. Water storage chamber; 106. Second sealed chamber; 201. Connecting rod; 202. First rotary plate Moving plate; 203, water outlet; 204, through pipe; 205, second rotating plate; 301, second limiting ring; 401, transceiver antenna; 601, hexagonal frame; 701, rotating shaft; 801, water inlet pipe; 802, water outlet pipe; 901, second meshing tooth; 1001, convex ring; 2021, first meshing tooth; 2031, water outlet hole; 2041, first limiting ring; 2042, connecting strip; 2051, groove. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "opened", "one side", "lower", "height", "along the annular direction", "concentric arrangement", "alternating connection", "inner", "circumferential side", "outer side" and the like indicate orientation or positional relationship, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0044] Example 1

[0045] See also Figure 1-2 As shown in Figure 5, the present invention is a noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication, comprising a cylindrical shell 1, an angle adjustment mechanism 2, a water pipe 3 and a single-carrier frequency domain equalization system 4. It can be seen from the accompanying drawings that the above components constitute the basic structure of the present device. A first separating disk 102 and a second separating disk 103 are arranged side by side along the axial direction on the inner side of the cylindrical shell 1. The first separating disk 102 and the second separating disk 103 respectively divide the interior of the cylindrical shell 1 into a water storage chamber 105 between the first separating disk 102 and the second separating disk 103, and a first sealed chamber 104 close to one side of the first separating disk 102 and a second sealed chamber 106 close to one side of the second separating disk 103. The arrangement of the first separating disk 102 and the second separating disk 103 can divide the interior of the cylindrical shell 1 into several relatively sealed and independent chambers.

[0046] The single-carrier frequency domain equalization system 4 is located inside the second sealed cavity 106 and is fixedly mounted on the second separating disk 103. One end of the transceiver antenna 401 provided on the single-carrier frequency domain equalization system 4 extends through the cylindrical housing 1 to the outside of the cylindrical housing 1. The single-carrier frequency domain equalization system 4 is mainly used to process and convert the output signal into an acoustic signal, which is ultimately transmitted through the transceiver antenna 401. The single-carrier frequency domain equalization system 4 mainly comprises components such as a processor, a storage device, a conversion module, and a power amplifier. Because its working principle is conventional, it will not be described in detail here.

[0047] A water pipe 3 is fixedly connected to one side surface of the second separating disc 103 along the circumferential direction. One end of the water pipe 3 extends toward the second sealed cavity 106 and passes through the cylindrical shell 1 to the outside of the cylindrical shell 1.

[0048] The water pipe 3 is connected to the interior of the water storage chamber 105 , which enables the seawater in the water storage chamber 105 to be discharged through the water pipe 3 .

[0049] See also Figure 2 、 4 As shown in FIG6 , the water pipe 3 is also provided with an angle adjustment mechanism 2, which includes a connecting rod 201, a rotating assembly and a water outlet head 203. The rotating assembly and the water outlet head 203 are respectively located on both sides of the connecting rod 201, wherein the rotating assembly is concentrically fixedly sleeved on the connecting rod 201;

[0050] One end of the water outlet head 203 is coaxially fixedly connected to a through pipe 204, and the through pipe 204 is connected to the interior of the water outlet head 203. A connecting strip 2042 is radially fixedly connected to the inner wall of the other end of the through pipe 204. One end of the connecting rod 201 is fixedly connected to the middle position of one side of the connecting strip 2042, and the other end of the connecting rod 201 is slidably sleeved in the first separating plate 102. This arrangement can realize the limit of both ends of the connecting rod 201, thereby realizing the positioning of the connecting rod 201 itself.

[0051] A water outlet hole 2031 is further provided on the side wall of the water outlet head 203 and is in communication with the interior of the water outlet head 203. The water outlet hole 2031 is provided for discharging seawater in the water pipe 3.

[0052] The through pipe 204 is slidably fitted inside the water pipe 3, and a first limiting ring 2041 is fixedly sleeved on the outer wall of the through pipe 204 located inside the water pipe 3. A second limiting ring 301 is circumferentially provided on the inner wall of the water pipe 3 between the first limiting ring 2041 and the water outlet head 203, and is also provided to achieve a limiting effect on the through pipe 204 in the water pipe 3.

[0053] The rotating assembly is located inside the water storage chamber 105, while the water outlet head 203 is located outside the cylindrical shell 1;

[0054] This arrangement enables the water storage chamber 105 to communicate with the outside of the cylindrical shell 1, facilitating the discharge of seawater in the water storage chamber 105 to the outside of the cylindrical shell 1 through the water pipe 3.

[0055] The water storage chamber 105 is further provided with a driving assembly, and a plurality of rotating assemblies are evenly distributed along the circumference and matched with the outside of the driving assembly, and the axial rotation of the driving assembly can drive the axial synchronous rotation of the plurality of rotating assemblies;

[0056] The rotating assembly is composed of a first rotating disk 202 and first meshing teeth 2021 uniformly distributed along the circumferential direction on the outer wall of the first rotating disk 202; the driving assembly is composed of a first driving disk 9 and second meshing teeth 901 uniformly distributed along the circumferential direction on the outer wall of the first driving disk 9;

[0057] The first meshing teeth 2021 and the second meshing teeth 901 are meshed with each other;

[0058] The above arrangement can drive the second meshing teeth 901 to move along the circumferential direction of the first driving disk 9 under the action of the rotation of the first driving disk 9, thereby driving the continuous engagement between the first meshing teeth 2021 and the second meshing teeth 901, thereby realizing the rotation of the first rotating disk 202, and then realizing the rotation of the water head 203 to realize the adjustment of the angle of the water outlet 2031.

[0059] See also Figure 1 、 2As shown in Figure 9, a noise reduction layer 6 is provided inside the cylindrical shell 1, and an anti-interference layer 5 is provided inside the cylindrical shell 1 outside the noise reduction layer 6; the anti-interference layer 5 can play an anti-interference role and prevent external signals from interfering with the present device. A plurality of guide ribs 101 are also uniformly distributed along the circumferential direction on the outer wall of the cylindrical shell 1. The guide ribs 101 are provided to guide seawater to avoid impulse collision between seawater and the present device.

[0060] The noise reduction layer 6 is configured as a hollow cylinder with closed ends. The noise reduction layer 6 is composed of multiple hexagonal frames 601, and adjacent hexagonal frames 601 are connected by common edges. This configuration can make the noise reduction layer 6 as a whole beehive-shaped, thereby achieving a good noise reduction effect.

[0061] See also Figure 2 、 3 As shown in Figure 5, a rotating shaft 701 is coaxially provided on one side of the driving assembly. One end of the rotating shaft 701 passes through the first separating plate 102 and extends into the first sealed cavity 104 to engage with the output end of the motor 7. The motor 7 is fixedly connected to the first separating plate 102. The forward and reverse rotation of the motor 7 can drive the driving assembly to move forward and reverse.

[0062] A water pump 8 is also provided inside the first sealed cavity 104 above the motor 7, and the water pump 8 is fixedly connected to the first separating plate 102. The water inlet end of the water pump 8 is connected to a water inlet pipe 801, and the water outlet end of the water pump 8 is connected to a water outlet pipe 802. The water inlet pipe 801 is connected to the outside of the cylindrical shell 1, and the water outlet pipe 802 is connected to the water storage cavity 105. The setting of the water pump 8 can continuously suck external seawater into the water storage cavity 105. When in use, electrical components such as the motor 7 and the water pump 8 can be connected to the control center through conductive lines.

[0063] Example 2

[0064] See also Figure 7-8 As shown, the rotating assembly described in the first embodiment may also be composed of a second rotating disk 205 and a groove 2051 circumferentially arranged at the middle position of the outer side wall of the second rotating disk 205; the driving assembly may also be composed of a second driving disk 10 and a protruding ring 1001 circumferentially arranged at the middle position of the outer side wall of the second driving disk 10;

[0065] The convex ring 1001 is loosely fitted in the groove 2051, and the outer wall of the convex ring 1001 is in contact with the inner bottom surface of the groove 2051. This setting enables the second rotating disk 205 to rotate while the second driving disk 10 rotates under the action of the friction force between the second rotating disk 205 and the second driving disk 10.

[0066] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication, comprising a cylindrical housing (1), an angle adjustment mechanism (2), a water pipe (3), and a single-carrier frequency domain equalization system (4), characterized in that: A first separating disc (102) and a second separating disc (103) are arranged in parallel along the axial direction on the inner side of the cylindrical shell (1), and the first separating disc (102) and the second separating disc (103) respectively separate the interior of the cylindrical shell (1) into a water storage chamber (105) between the first separating disc (102) and the second separating disc (103), a first sealed chamber (104) close to the first separating disc (102), and a second sealed chamber (106) close to the second separating disc (103); A water pipe (3) is fixedly connected to one side surface of the second separating disc (103) along the circumferential direction, and one end of the water pipe (3) extends toward the second sealed cavity (106) and passes through the cylindrical shell (1) to the outside of the cylindrical shell (1); The water delivery pipe (3) is connected to the interior of the water storage chamber (105); The water delivery pipe (3) is also provided with an angle adjustment mechanism (2), the angle adjustment mechanism (2) comprising a connecting rod (201), a rotating assembly and a water outlet head (203), the rotating assembly and the water outlet head (203) being respectively located on both sides of the connecting rod (201), wherein the rotating assembly is concentrically fixedly sleeved on the connecting rod (201); One end of the water outlet head (203) is coaxially fixedly connected to a through pipe (204), and the through pipe (204) is connected to the interior of the water outlet head (203). A connecting strip (2042) is radially fixedly connected to the inner wall of the other end of the through pipe (204); one end of the connecting rod (201) is fixedly connected to the middle position of one side surface of the connecting strip (2042), and the other end of the connecting rod (201) is slidably sleeved in the first separating plate (102); A water outlet hole (2031) communicating with the interior of the water outlet head (203) is also provided on the side wall of the water outlet head (203); The rotating assembly is located inside the water storage chamber (105), while the water outlet head (203) is located outside the cylindrical shell (1); A driving assembly is further provided inside the water storage chamber (105), and a plurality of rotating assemblies are evenly distributed along the circumferential direction and matched on the outside of the driving assembly, and the axial rotation of the driving assembly can drive the axial synchronous rotation of the plurality of rotating assemblies; A noise reduction layer (6) is provided inside the cylindrical shell (1), and an anti-interference layer (5) is provided inside the cylindrical shell (1) outside the noise reduction layer (6); a plurality of flow guide ridges (101) are also uniformly distributed along the circumferential direction on the outer wall of the cylindrical shell (1).

2. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 1, characterized in that: The rotating assembly is composed of a first rotating disk (202) and first meshing teeth (2021) uniformly distributed along the circumferential direction on the outer wall of the first rotating disk (202); and the driving assembly is composed of a first driving disk (9) and second meshing teeth (901) uniformly distributed along the circumferential direction on the outer wall of the first driving disk (9).

3. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 2, characterized in that: The first meshing teeth (2021) and the second meshing teeth (901) are meshed with each other.

4. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 1, characterized in that: The rotating assembly is composed of a second rotating disk (205) and a groove (2051) circumferentially arranged at the middle position of the outer side wall of the second rotating disk (205); the driving assembly is composed of a second driving disk (10) and a convex ring (1001) circumferentially arranged at the middle position of the outer side wall of the second driving disk (10).

5. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 4, characterized in that: The convex ring (1001) is loosely fitted in the groove (2051), and the outer side wall of the convex ring (1001) is in contact with the inner bottom surface of the groove (2051).

6. The noise reduction and interference prevention device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to any one of claims 1 to 5, characterized in that: A rotating shaft (701) is coaxially arranged on one side surface of the driving assembly, one end of the rotating shaft (701) passes through the first separating disk (102) and extends into the first sealed cavity (104) to engage with the output end of the motor (7), and the motor (7) is fixedly connected to the first separating disk (102).

7. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 6, characterized in that: A water pump (8) is further provided inside the first sealed cavity (104) above the motor (7), and the water pump (8) is fixedly connected to the first separating disc (102). The water inlet end of the water pump (8) is connected to a water inlet pipe (801), and the water outlet end of the water pump (8) is connected to a water outlet pipe (802). The water inlet pipe (801) is connected to the outside of the cylindrical shell (1), and the water outlet pipe (802) is connected to the water storage cavity (105).

8. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 1, characterized in that: The through pipe (204) is slidably sleeved inside the water pipe (3), and a first limiting ring (2041) is fixedly sleeved on the outer wall of the through pipe (204) located inside the water pipe (3), and a second limiting ring (301) is circumferentially arranged on the inner wall of the water pipe (3) between the first limiting ring (2041) and the water outlet head (203).

9. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 1, characterized in that: The single-carrier frequency domain equalization system (4) is located inside the second sealed cavity (106) and is fixedly mounted on the second separation disk (103); one end of the transceiver antenna (401) provided on the single-carrier frequency domain equalization system (4) passes through the cylindrical shell (1) and extends to the outside of the cylindrical shell (1).

10. The noise reduction and anti-interference device for a single-carrier frequency domain equalization system based on underwater acoustic communication according to claim 1, characterized in that: The noise reduction layer (6) is configured as a hollow column with closed ends. The noise reduction layer (6) is composed of a plurality of hexagonal frames (601), and adjacent hexagonal frames (601) are connected by sharing a common edge.

Images