Near-bottom geological radar detection system and method

Abstract

The invention provides a near-bottom geological radar detection system and method. The near-bottom geological radar detection system comprises a cable, an antenna module and a tail turbulence device, the cable comprises a first end and a second end, the first end of the cable is connected with a mother ship console, and the cable is used for transmitting optical signals and supplying power; the antenna module is connected with the second end of the cable, and the antenna module is used for transmitting and receiving electric signals so as to explore the underwater geological environment. Signal transmission and storage are realized through an antenna module, a cable and a mother ship console, so that real-time and accurate detection on an underwater near bottom surface is realized, high-efficiency transmission of detection data of an underwater geological environment is realized, the data acquisition efficiency is greatly improved, and the cost is reduced. The problem of rapid attenuation of a traditional ground penetrating radar when an electromagnetic wave signal passes through a water body is effectively solved, the requirement of underwater near-bottom detection work is met, and powerful support is provided for technical progress in related fields.

Description

Technical Field

[0001] The present application belongs to the field of underwater geological exploration technology, and specifically relates to a near-bottom geological radar detection system and method. Background Art

[0002] Existing ground penetrating radar (GPR) technology plays an important role in the field of terrestrial geological exploration. It can penetrate the surface and perform high-resolution imaging of underground structures. However, when it comes to underwater environments, the application of traditional ground penetrating radar underwater faces major challenges due to the significant differences in the physical properties of water bodies and terrestrial soils, especially the influence of water conductivity on radar signal propagation. The high conductivity of water bodies causes electromagnetic waves to attenuate rapidly when propagating underwater, which greatly limits the penetration ability and detection depth of traditional ground penetrating radar signals. Therefore, in order to effectively carry out underwater geological exploration, it is urgent to develop a near-bottom geological radar detection system and method that can adapt to the underwater environment and overcome the problem of electromagnetic wave attenuation. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present application is to provide a near-bottom geological radar detection system and method, which at least solves one technical problem existing in the prior art.

[0004] In order to solve the above problems, the first aspect of the present application provides a near-bottom geological radar detection system, including a cable, an antenna module and a tail turbulence device; the cable includes a first end and a second end, the first end of the cable is connected to the mother ship control console, and the cable is used to transmit optical signals and power supply; the antenna module is connected to the second end of the cable, and the antenna module is used to transmit and receive electrical signals to explore the underwater geological environment.

[0005] Optionally, the antenna module includes a first photoelectric conversion module, a second photoelectric conversion module, a first transmitting antenna and a first receiving antenna, the first photoelectric conversion module and the second photoelectric conversion module are connected to the second end of the cable, the first photoelectric conversion module is connected to the first transmitting antenna, the first photoelectric conversion module is used to convert an optical signal into an electrical signal, the second photoelectric conversion module is connected to the first receiving antenna, and the second photoelectric conversion module is used to convert an electrical signal into an optical signal.

[0006] Optionally, the antenna module further includes an antenna shielding shell, and the first photoelectric conversion module, the second photoelectric conversion module, the transmitting antenna and the receiving antenna are arranged in the antenna shielding shell.

[0007] Optionally, the cable includes an optical cable, which is arranged inside the protective layer, and is used to transmit optical signals, and is respectively connected to the first optoelectronic conversion module and the second optoelectronic conversion module of the antenna module.

[0008] Optionally, the detection system further includes a towing body, which is disposed at the front end of the antenna module and connected to the antenna module.

[0009] Optionally, the towing body includes a towing body shell, in which a first acquisition module and a signal transmission module are arranged, the first acquisition module is connected to the signal transmission module, the first acquisition module is used to acquire underwater environment images and detection trajectories, and the signal transmission module is used to feed back the acquired underwater environment images and detection trajectories to the mother ship control console.

[0010] Optionally, the trailer body further includes a counterweight, a counterweight placement groove is provided in the trailer body shell, and the counterweight is provided in the placement groove.

[0011] Optionally, the cable also includes an electric cable, which is arranged inside the protective layer, and the cable is respectively connected to the first acquisition module and the signal transmission module in the trailer body, so as to supply power to the first acquisition module and the signal transmission module.

[0012] Optionally, the mother ship control console includes a control system, which includes a control host, a second transmitting module, a second receiving module, a third photoelectric conversion module, a fourth photoelectric conversion module and a second acquisition module, the second transmitting module is connected to the third photoelectric conversion module, the second receiving module is connected to the fourth photoelectric conversion module, the third photoelectric conversion module and the fourth photoelectric conversion module are connected to the first end of the cable, the second acquisition module is connected to the towing body, and the second transmitting module, the second receiving module and the second acquisition module are respectively connected to the control host.

[0013] Optionally, the detection system further includes a tail turbulence device, which is disposed on the opposite side of the tail end of the antenna module and is used to reduce the impact of water flow on the antenna module.

[0014] The second aspect of the present application provides a near-bottom geological radar detection method, using any one of the near-bottom geological radar detection systems described above, the detection method comprising:

[0015] The mother ship console emits an optical signal for geological exploration, which is transmitted to the antenna module via the cable, converted into an electrical signal by the antenna module and then emitted; when encountering an underground structure, the electrical signal is reflected, received by the antenna module and converted into an optical signal, which is transmitted back to the mother ship console via the cable, converted into an electrical signal by the mother ship console and stored.

[0016] By means of the above technical solution, the present invention has at least the following beneficial effects:

[0017] A near-bottom geological radar detection system and method provided in an embodiment of the present application places an antenna module in an underwater environment, and a mother ship console converts the transmitted electrical signal into an optical signal using the principle of photoelectric conversion, and transmits the optical signal to the antenna module via a cable. The antenna module converts the optical signal back into an electrical signal and transmits it into the underwater environment. The electrical signal is reflected by the underground structure, captured by the antenna module and converted into an optical signal, which is transmitted to the mother ship console via a cable and converted into an electrical signal. Signal transmission and storage are achieved through the antenna module, the cable and the mother ship console, thereby achieving real-time and accurate detection of the underwater near-bottom surface, achieving efficient transmission of underwater geological environment detection data, greatly improving data acquisition efficiency, and effectively overcoming the rapid attenuation problem encountered by traditional ground-penetrating radar when electromagnetic wave signals pass through water bodies, meeting the needs of underwater near-bottom detection work, and providing strong support for technological progress in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a near-bottom geological radar detection system according to an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the internal structure of the trailer according to an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the internal structure of an antenna assembly according to an embodiment of the present application;

[0021] Figure 4 This is a test diagram of the tail turbulence device of an embodiment of the present application installed on the antenna assembly.

[0022] The reference numerals are:

[0023] 1. Mother ship control console;

[0024] 2. Cables;

[0025] 3. Towing body; 301. First acquisition module; 302. Signal transmission module; 303. Counterweight block; 304. Towing body shell;

[0026] 4. Antenna module; 401. First transmitting antenna; 402. First receiving antenna; 403. First photoelectric conversion module; 404. Second photoelectric conversion module;

[0027] 5. Tail turbulence device. DETAILED DESCRIPTION

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] See also Figures 1 to 4 As shown, according to the first aspect of an embodiment of the present application, a near-bottom geological radar detection system is provided, including a cable 2 and an antenna module 4, the cable 2 includes a first end and a second end, the first end of the cable 2 is connected to the mother ship control console 1, and the cable 2 is used to transmit optical signals and power supply; the antenna module 4 is connected to the second end of the cable 2, and the antenna module 4 is used to transmit and receive electrical signals to explore the underwater geological environment.

[0033] The antenna module 4 is placed in an underwater environment, and the mother ship console 1 uses the principle of photoelectric conversion to convert the transmitted electrical signal into an optical signal, and transmits it to the antenna module 4 through the cable 2. The antenna module 4 converts the optical signal back into an electrical signal and transmits it into the underwater environment. The electrical signal encounters the underground structure and is reflected, which is captured by the antenna module 4 and converted into an optical signal, which is transmitted to the mother ship console 1 through the cable 2 and converted into an electrical signal. The signal is transmitted and stored through the antenna module 4, the cable 2 and the mother ship console 1, thereby realizing real-time and accurate detection of the underwater near-bottom surface, realizing efficient transmission of underwater geological environment detection data, greatly improving data acquisition efficiency, and effectively overcoming the rapid attenuation problem encountered by traditional ground penetrating radar when electromagnetic wave signals pass through water bodies, meeting the needs of underwater near-bottom detection work, and providing strong support for technological progress in related fields.

[0034] The mother ship console 1 is the control center of the whole system, which is used to transmit detection signals and receive and store underwater environment exploration data returned by detection. The mother ship console 1 is located on the water surface.

[0035] The cable 2 is used to connect the mother ship console 1 with the antenna assembly 4 on one hand, and to transmit optical signals and power supply on the other hand. The cable 2 is at least partially located in the underwater environment, and the antenna assembly 4 is completely located in the underwater environment. The power for the antenna assembly 4 to move underwater is provided by the mother ship console 1; that is, the mother ship console 1 moves on the water surface to drag the cable 2 and the antenna assembly 4 to move in the water to complete the exploration of the underwater geological environment.

[0036] The cable 2 is used to connect the antenna assembly 4 to explore the underwater geological environment, which solves the problem of signal attenuation caused by water bodies in existing radar detection, effectively retains the effective information of the signal, and improves the stability and accuracy of detection.

[0037] The antenna module 4 includes a first photoelectric conversion module 403, a second photoelectric conversion module 404, a first transmitting antenna 401 and a first receiving antenna 402. The first photoelectric conversion module 403 and the second photoelectric conversion module 404 are connected to the second end of the cable 2. The first photoelectric conversion module 403 is connected to the first transmitting antenna 401. The first photoelectric conversion module 403 is used to convert an optical signal into an electrical signal. The second photoelectric conversion module 404 is connected to the first receiving antenna 402. The second photoelectric conversion module 404 is used to convert an electrical signal into an optical signal.

[0038] Among them, the first photoelectric conversion module 403 is used for transmission, and is used to convert the optical signal emitted by the mother ship control console 1 and transmitted via the cable 2 into an electrical signal for transmission by the first transmitting antenna 401. It ensures the efficient conversion of the signal during the transmission of the optical signal from the mother ship control console 1 to the underwater first transmitting antenna 401, reduces signal loss, and improves the effectiveness and stability of the signal transmission of the detection system.

[0039] The first transmitting antenna 401 adopts the loaded dipole antenna technology to enhance the penetration and coverage of the electrical signal.

[0040] Specifically, the first transmitting antennas 401 are installed in a protective casing made of pressure-resistant material to protect them from the impact of the underwater high-pressure environment.

[0041] The first receiving antenna 402 also adopts the loaded dipole antenna technology to ensure a high receiving efficiency for the reflected electrical signal.

[0042] Specifically, the first receiving antenna 402 is installed in a protective casing made of pressure-resistant material to protect them from the influence of the underwater high-pressure environment.

[0043] Among them, the second optoelectronic conversion module 404 is used to convert the electrical signal captured by the first receiving antenna 402 into an optical signal, and then transmit the optical signal to the mother ship console 1 through the cable 2. This conversion method is crucial to maintaining the integrity and strength of the signal, ensuring the stability and reliability of the signal in long-distance underwater transmission.

[0044] Among them, the antenna module 4 also includes an antenna shielding shell, and the first photoelectric conversion module 403, the second photoelectric conversion module 404, the first transmitting antenna 401 and the first receiving antenna 402 are arranged in the antenna shielding shell; the first photoelectric conversion module 403, the second photoelectric conversion module 404, the first transmitting antenna 401 and the first receiving antenna 402 are protected by the antenna shielding shell to prevent them from reducing their sensitivity or being damaged due to environmental factors during long-term use.

[0045] Among them, the antenna module 4 also includes a battery, and the first photoelectric conversion module 403, the second photoelectric conversion module 404, the first transmitting antenna 401 and the first receiving antenna 402 are connected to the battery, and the first photoelectric conversion module 403, the second photoelectric conversion module 404, the first transmitting antenna 401 and the first receiving antenna 402 are powered by the battery.

[0046] The cable 2 includes an optical cable, which is arranged inside the protective layer and is used to transmit optical signals, and is respectively connected to the first photoelectric conversion module 403 and the second photoelectric conversion module 404 of the antenna module 4. The optical cable can ensure high-speed, efficient and fidelity transmission of optical signals, and has excellent anti-interference performance.

[0047] Among them, there are at least two optical cables, one end of which is connected to the mother ship console 1, and the other end is connected to the first photoelectric conversion module 403, which is used to transmit the optical signal emitted by the mother ship console 1 to the first photoelectric conversion module 403; one end of the other optical cable is connected to the mother ship console 1, and the other end is connected to the second photoelectric conversion module 404, which is used to convert the electrical signal captured by the first receiving antenna 402 into an optical signal through the second photoelectric conversion module 404 and feed it back to the mother ship console 1.

[0048] The detection system also includes a towing body 3, which is arranged at the front end of the antenna module 4 and connected to the antenna module 4. The towing body 3 is used to transmit the underwater geological environment impact in real time, and feed it back to the mother ship console 1, and combine it with the data information detected by the antenna component 4 to explore the underwater geological environment and improve the accuracy and authenticity of the exploration results.

[0049] The towing body 3 includes a towing body shell, in which a first acquisition module 301 and a signal transmission module 302 are arranged. The first acquisition module 301 is connected to the signal transmission module 302. The first acquisition module 301 is used to collect underwater environment images and detection trajectories, and the signal transmission module 302 is used to feed back the collected underwater environment images and detection trajectories to the mother ship console 1.

[0050] Among them, the first acquisition module 301 and the signal transmission module 302 are arranged in the towing body shell, that is, the signal transmission module 302 is sealed in the towing body shell, and the first acquisition module 301 includes a collection end, the collection end of the first acquisition module 301 is nested and installed on the side wall of the towing body shell, and a sealing ring is arranged at the connection to prevent water from entering the towing body shell from the nesting, affecting the normal operation of the towing body 3, and the other parts of the first acquisition module 301 except the collection end are arranged in the towing body shell.

[0051] Specifically, the first acquisition module 301 here is a high-definition underwater camera.

[0052] Specifically, in order to further ensure the shooting effect, a searchlight is also installed on the side wall of the trailer shell to provide a lighting environment for the high-definition camera to obtain clearer underwater environment images and detection tracks.

[0053] The signal transmission module 302 is connected to the first acquisition module 301 , and its purpose is to feed back the underwater environment image and detection track acquired by the first acquisition module 301 to the mother ship console 1 , and store them through the mother ship console 1 .

[0054] The trailer body 3 further includes a counterweight 303 . A counterweight placement groove is provided in the trailer body shell, and the counterweight 303 is provided in the placement groove.

[0055] Among them, the counterweight block 303 is installed in the counterweight block placement groove, that is, the counterweight block 303 is fixed relative to the towing body shell to prevent the counterweight block 303 from sliding in the towing body shell in the underwater environment, affecting the overall stability and avoiding rollover; at the same time, the counterweight block 303 is arranged in the towing body 3, and by adjusting the counterweight blocks 303 of different weights, it can adapt to different detection depths and scenes.

[0056] Specifically, there are at least two counterweight blocks 303 , which are symmetrically arranged in the outer shell of the towing body relative to the signal transmission module to ensure the balance of the towing body 3 itself.

[0057] The cable 2 also includes an electric cable, which is arranged inside the protective layer. The electric cable is respectively connected to the first acquisition module 301 and the signal transmission module 302 in the trailer 3 for supplying power to the first acquisition module 301 and the signal transmission module 302 .

[0058] Wherein, when a searchlight is provided, the cable also provides electrical energy for the searchlight.

[0059] The cable passes through the towing body shell and extends into the towing body shell, and is electrically connected to the first acquisition module 301 , the signal transmission module 302 and the searchlight, so as to realize power supply of the towing body 3 .

[0060] The optical cable in the cable 2 passes through the towing body housing and extends into the antenna shielding housing, and is connected to the first photoelectric conversion module 403 and the second photoelectric conversion module 404 respectively.

[0061] Sealing rings are installed at the connection between the cable 2 and the towing body shell and the antenna shielding shell to ensure the sealing of the internal environment of the towing body 3 and the antenna assembly 4.

[0062] The mother ship console 1 includes a control system, which includes a control host, a second transmitting module, a second receiving module, a third photoelectric conversion module, a fourth photoelectric conversion module and a second acquisition module. The second transmitting module is connected to the third photoelectric conversion module, the second receiving module is connected to the fourth photoelectric conversion module, the third photoelectric conversion module and the fourth photoelectric conversion module are connected to the first end of the cable 2, the second acquisition module is connected to the signal transmission module in the towing body 3, and is used to convert the collected electrical signals into digital signals. The second transmitting module, the second receiving module and the second acquisition module are respectively connected to the control host.

[0063] Among them, the second transmitting module is connected to the control host, and the control host sends instructions to make the second transmitting module transmit electrical signals for underwater geological environment exploration, which are converted into optical signals by the third photoelectric conversion module and transmitted to the antenna component 4 located underwater via cables.

[0064] Among them, the second receiving module is connected to the control host, the receiving antenna component 4 captures the electrical signal and converts it into an optical signal, which is transmitted through the cable 2, and then converted into an electrical signal by the fourth optoelectronic conversion module and received by the second receiving module, and fed back to the control host.

[0065] The second acquisition module is connected to the signal transmission module in the towing body 3 so as to feed back the underwater environment image information and the detection track collected in the towing body 3 to the control host through the second acquisition module.

[0066] Specifically, the control host is a computer.

[0067] The detection system further comprises a tail turbulence device 5 , which is arranged at the opposite side of the tail end of the antenna module 4 , and is used to reduce the impact of water flow on the antenna module 4 .

[0068] The tail turbulence device 5 is a flange plate, which has a smooth transition from the connecting end to the edge, and its cross-sectional shape is a half ellipse.

[0069] Specifically, the tail turbulence device 5 is made of a high-strength and high-density material, and in this embodiment, engineering plastics are used.

[0070] By arranging a tail turbulence device 5 on the opposite side of the tail end of the antenna module 4, it is used to guide the water flow direction at the tail of the antenna component 4, reduce air flow turbulence and eddy current phenomena, further ensure that the detection system glides stably underwater, and ensure the stability of underwater detection.

[0071] The second aspect of the present application provides a near-bottom geological radar detection method, using any one of the near-bottom geological radar detection systems described above, the detection method comprising:

[0072] The mother ship console 1 emits an optical signal for geological exploration, which is transmitted to the antenna module 4 via the cable 2; the optical signal is converted into an electrical signal by the antenna module 4 and transmitted; the electrical signal is reflected when encountering the underground structure, received by the antenna module 4 and converted into an optical signal, which is transmitted back to the mother ship console 1 via the cable 2, and stored after being converted into an electrical signal by the mother ship console 1.

[0073] A more detailed detection method is as follows: the control host on the mother ship console 1 controls the second transmitting module to transmit an electrical signal for geological exploration, which is converted into an optical signal by the third photoelectric conversion module, and then transmitted to the first photoelectric conversion module in the antenna module 4 through the cable 2, and then converted back into an electrical signal by the first photoelectric conversion module and transmitted through the first transmitting antenna 401 to explore the underwater geological environment. Figure 3 In the abnormal body shown in the figure, the electrical signal emitted by the first transmitting antenna 401 is reflected, captured by the first receiving antenna in the antenna assembly 4, converted into an optical signal by the second photoelectric conversion module 402, and transmitted to the fourth photoelectric conversion module 402 of the mother ship control console 1 by the cable 2, and then converted back into an electrical signal by the fourth photoelectric conversion module 402 and transmitted to the second receiving antenna, and then fed back to the control host by the second receiving antenna and stored.

[0074] Here, the first acquisition module 301 in the towing body 3 can collect image information and detection trajectory of the underwater geological environment, and then transmit it to the second acquisition module on the mother ship console 1 through the signal transmission module, and the second acquisition module converts it into a digital signal and feeds it back to the control host, generating a high-resolution image of the seabed geological structure, providing key information for geological exploration.

[0075] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0076] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A near-bottom geological radar detection system, characterized in that: include: A cable (2), the cable (2) comprising a first end and a second end, the first end of the cable (2) being connected to the mother ship console (1), the cable (2) being used for transmitting optical signals and supplying power; An antenna module (4), the antenna module (4) being connected to the second end of the cable (2), the antenna module (4) being used to transmit and receive electrical signals to explore an underwater geological environment.

2. A near-bottom geological radar detection system according to claim 1, characterized in that: The antenna module (4) comprises a first photoelectric conversion module (403), a second photoelectric conversion module (404), a first transmitting antenna (401) and a first receiving antenna (402); the first photoelectric conversion module (403) and the second photoelectric conversion module (404) are connected to the second end of the cable (2); the first photoelectric conversion module (403) is connected to the first transmitting antenna (401); the first photoelectric conversion module (403) is used to convert an optical signal into an electrical signal; the second photoelectric conversion module (404) is connected to the first receiving antenna (402); the second photoelectric conversion module (404) is used to convert an electrical signal into an optical signal.

3. A near-bottom geological radar detection system according to claim 2, characterized in that: The cable (2) comprises an optical cable, which is arranged inside the protective layer and is used to transmit optical signals and is respectively connected to the first photoelectric conversion module and the second photoelectric conversion module of the antenna module (4).

4. A near-bottom geological radar detection system according to claim 1, characterized in that: The detection system further comprises a towing body (3), wherein the towing body (3) is arranged at the front end of the antenna module (4) and is connected to the antenna module (4).

5. A near-bottom geological radar detection system according to claim 4, characterized in that: The towing body (3) comprises a towing body shell (304), wherein a first acquisition module (301) and a signal transmission module (302) are arranged in the towing body shell (304), wherein the first acquisition module (301) is connected to the signal transmission module (302), wherein the first acquisition module (301) is used to acquire underwater environment images and detection tracks, and wherein the signal transmission module (302) is used to feed back the acquired underwater environment images and detection tracks to the mother ship control console (1).

6. A near-bottom geological radar detection system according to claim 5, characterized in that: The trailer body (3) further comprises a counterweight (303), a counterweight placement groove is provided in the trailer body shell (304), and the counterweight (303) is provided in the placement groove.

7. A near-bottom geological radar detection system according to claim 5, characterized in that: The cable (2) further comprises an electric cable, which is arranged inside the protective layer and is respectively connected to the first acquisition module (301) and the signal transmission module (302) in the trailer (3) for supplying power to the first acquisition module (301) and the signal transmission module (302).

8. A near-bottom geological radar detection system according to claim 4, characterized in that: The mother ship control console (1) comprises a control system, which comprises a control host, a second transmitting module, a second receiving module, a third photoelectric conversion module, a fourth photoelectric conversion module and a second acquisition module, wherein the second transmitting module is connected to the third photoelectric conversion module, the second receiving module is connected to the fourth photoelectric conversion module, the third photoelectric conversion module and the fourth photoelectric conversion module are connected to the first end of the cable (2), the second acquisition module is connected to the towing body (3), and the second transmitting module, the second receiving module and the second acquisition module are respectively connected to the control host.

9. The near-bottom geological radar detection system according to claim 1, characterized in that: The detection system further comprises a tail turbulence device (5), which is arranged on the opposite side of the tail end of the antenna module (4), and is used to reduce the impact of water flow on the antenna module (4).

10. A near-bottom geological radar detection method, characterized in that: The near-bottom geological radar detection system according to any one of claims 1 to 9 is adopted, and the detection method comprises: The mother ship console (1) emits an optical signal for geological exploration, which is transmitted to the antenna module (4) via the cable (2), converted into an electrical signal by the antenna module (4) and then emitted; upon encountering an underground structure, the electrical signal is reflected, received by the antenna module (4) and converted into an optical signal, which is transmitted back to the mother ship console (1) via the cable (2), converted into an electrical signal by the mother ship console (1) and then stored.

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