Floating towing positioning system for stratigraphic measurement of beach and shallow sea wind power site and measurement method thereof

Abstract

The invention relates to a beach and shallow sea wind power site stratum measurement floating towing positioning system and a measurement method thereof, a seabed site stratum profile measurement device, a navigation positioning device and a power supply device are all carried on an investigation ship, and a floating body towing device is dragged to the stern of the investigation ship through a rope; the seabed site stratigraphic profile measuring device comprises a seismic source, the seismic source is arranged at the bottom end of the floating body dragging device, the navigation positioning device comprises an antenna, the antenna is arranged at the top end of the floating body dragging device, and the antenna and the seismic source are correspondingly arranged; the measurement process comprises the steps of working condition analysis, equipment installation, underway test, data quality test of a submarine site stratigraphic profile measurement device, measurement line layout, underway measurement, data integrity check, site stratigraphic profile data processing and analysis, and drawing and report making. Compared with a traditional beach shallow sea site stratigraphic profile measuring and positioning method, measurement and high-precision positioning of the intertidal zone site stratigraphic profile can be effectively completed, and the measurement precision of the beach shallow sea seabed site stratigraphic profile is improved.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and in particular to a floating towed positioning system and measurement method for geological surveying of shallow sea wind farm sites. Background Technology

[0002] Currently, for shallow sea renewable energy development, high-precision measurement of site stratigraphic profiles, and the distribution of geological hazards, shallow sea surveying is characterized by high technical requirements and complex measurement environments. Therefore, it is necessary to address the specific challenges of each project by employing survey vessel systems and specialized equipment and methods. Existing measurement methods use a layback approach for positioning. However, due to the influence of wind, waves, currents, and vessel speed, the depth of the seismic source in the water constantly changes, resulting in a non-fixed layback distance between the seismic source and the antenna. This significantly affects the data quality and analytical accuracy of site stratigraphic profile measurements. The following two problems exist in field applications:

[0003] (1) The tidal current velocity varies greatly in the intertidal zone of shallow seas, and the wave direction is greatly affected by the topography. The conventional layback method is an ideal positioning correction model, but the actual measured spatial position of the seismic source has a large deviation.

[0004] (2) Conventional survey vessels in the intertidal zone use fiberglass tourist boats, which generate a lot of noise from the generator, affecting the survey operation environment and reducing the quality of site stratigraphic profile data. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a floating towed positioning system and method for stratigraphic measurement of shallow seabed wind farm sites. Its advantages are that it can effectively improve the stability and reliability of data acquisition during stratigraphic profile measurement and high-precision positioning operations at shallow seabed sites, and improve the measurement accuracy of stratigraphic profiles at shallow seabed sites; at the same time, it improves the quality of site stratigraphic profile data.

[0006] The above-mentioned objective of this invention is achieved through the following technical solution: On one hand, this invention provides a floating towed positioning system for stratigraphic measurement of shallow sea wind farm sites, including a survey vessel, a seabed site stratigraphic profile measuring device, a navigation and positioning device, a floating towed device, and a power supply device; the survey vessel is used to float on the water surface, the seabed site stratigraphic profile measuring device, the navigation and positioning device, and the power supply device are all mounted on the survey vessel, the floating towed device is towed to the stern of the survey vessel by a rope, and the survey vessel, the seabed site stratigraphic profile measuring device, and the navigation and positioning device are all electrically connected to the power supply device; The seabed site stratigraphic profile measuring device includes a seismic source, which is located at the bottom of the floating towed device. The navigation and positioning device includes an antenna, which is located at the top of the floating towed device and is positioned corresponding to the seismic source. The seabed site stratigraphic profile measuring device is used to measure the seabed site stratigraphic profile of the shallow sea cable and the distribution of influencing metal obstacles. The navigation and positioning device is used to provide spatial location for the survey vessel and the seismic source, and to provide spatial location for the site stratigraphic profile in the shallow sea. The power supply device is used to supply power to the survey vessel, the seabed site stratigraphic profile measuring device, and the navigation and positioning device.

[0007] Preferably, the floating positioning system for measuring the stratigraphy of shallow sea wind farm sites provided by the present invention further includes a deck unit and a hydrophone. The seismic source and the hydrophone are both wired to the deck unit, which is placed in the engine room of the survey vessel. The seismic source is connected to the deck unit via a first cable and is connected to the first winch of the survey vessel via the first cable. The seismic source is towed to the stern of the survey vessel. The hydrophone is connected to the deck unit via a second cable and is connected to the second winch of the survey vessel via the second cable. The hydrophone is towed to the stern of the survey vessel.

[0008] Preferably, the floating towed positioning system for geological surveying of shallow sea wind farm sites provided by the present invention further includes a third cable and a receiver. The receiver is placed inside the engine room of the survey vessel, and the antenna is connected to the receiver through the third cable.

[0009] Preferably, the floating towed positioning system for geological surveying of shallow sea wind farm sites provided by the present invention includes two barrel-shaped floats, a support frame, a flange, and a connecting rod. The two barrel-shaped floats are arranged opposite each other and connected by the support frame. The top end of the connecting rod is connected to the bottom end of the support frame via the flange, and the bottom end of the connecting rod is connected to the seismic source. The antenna is connected to the flange via a support rod, and the bottom end of the support rod is connected to the top end of the support frame via the flange. The top end of the support rod is connected to the antenna, and the antenna is correspondingly arranged with the seismic source. The support frame is towed to the stern of the survey vessel by a rope.

[0010] Preferably, in the floating positioning system for geological surveying of shallow sea wind farm sites provided by the present invention, the length of the support rod is greater than 2m.

[0011] Preferably, in the floating positioning system for geological surveying of shallow sea wind farm sites provided by the present invention, the support frame is I-shaped.

[0012] Preferably, the floating towed positioning system for geological surveying of shallow sea wind farm sites provided by the present invention uses the BeiDou satellite navigation system as its navigation and positioning device.

[0013] Preferably, the floating towed positioning system for measuring the stratigraphic profile of a shallow sea wind farm site provided by the present invention uses the G-882 marine magnetic system as the measuring device for the seabed site stratigraphic profile.

[0014] Preferably, the floating towed positioning system for geological surveying of shallow sea wind farm sites provided by the present invention uses a fast-charging mobile power supply as its power source.

[0015] On the other hand, the present invention provides a measurement method for the floating towed positioning system for geological surveying of shallow offshore wind farm sites as described above, comprising the following steps:

[0016] Basic data on wind, waves, currents, and fishery activities in the shallow sea wind power working area;

[0017] Install the floating positioning system for geological surveying at the shallow sea wind farm site;

[0018] The survey vessel underwent a sea trial;

[0019] Data quality testing was performed on the seabed site stratigraphic profile measuring device.

[0020] The survey lines are laid out;

[0021] The aforementioned seabed site stratigraphic profile measuring device was used to measure and test the site stratigraphic profile and the distribution of obstacles;

[0022] After the measurement is completed, check the full coverage and data quality of the seabed site stratigraphic profile measurement device in the SonarWiz software;

[0023] The collected site stratigraphic profile data will be processed and analyzed;

[0024] Prepare a stratigraphic profile of the seabed site and a map showing the distribution of obstacles, and compile a technical report on the findings.

[0025] In summary, the beneficial technical effects of this invention are as follows: The floating towed positioning system and method for stratigraphic measurement of shallow sea wind farm sites provided in this application include a survey vessel, a seabed site stratigraphic profile measuring device, a navigation and positioning device, a floating towed device, and a power supply device. The survey vessel floats on the water surface, and the seabed site stratigraphic profile measuring device, navigation and positioning device, and power supply device are all mounted on the survey vessel. The floating towed device is towed to the stern of the survey vessel by a rope. The survey vessel, the seabed site stratigraphic profile measuring device, and the navigation and positioning device are all electrically connected to the power supply device. The seabed site stratigraphic profile measuring device includes a seismic source, which is located on the floating towed device. At the bottom of the device, the navigation and positioning device includes an antenna, which is set at the top of the floating towed device and is positioned corresponding to the seismic source. The measurement process is as follows: working condition analysis - equipment installation - underway test - data quality test of the seabed site stratigraphic profile measurement device - survey line layout - underway measurement - data integrity check - site stratigraphic profile data processing and analysis - map and report compilation. Compared with traditional shallow sea site stratigraphic profile measurement and positioning methods, it can effectively complete the measurement and high-precision positioning of intertidal site stratigraphic profiles. It has high efficiency, intelligence and flexible operability, improves the stability and reliability of data acquisition during shallow sea site stratigraphic profile measurement and high-precision positioning operations, and improves the measurement accuracy of shallow sea site stratigraphic profiles. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the floating positioning system for geological surveying of shallow sea wind farm sites provided in an embodiment of the present invention.

[0027] Figure 2 This is a top view of the floating towing device in the floating towing positioning system for strata measurement of shallow sea wind farm sites provided in an embodiment of the present invention.

[0028] Figure 3 This is a plan view of the floating towing device in the floating towing positioning system for strata measurement of shallow sea wind farm sites provided in an embodiment of the present invention.

[0029] Figure 4 This is a flowchart of a measurement method for a floating towed positioning system for geological surveying of shallow sea wind farm sites, provided in another embodiment of the present invention.

[0030] In the figure, 1. Floating towed positioning system for stratigraphic measurement of shallow sea wind farm site; 10. Survey vessel; 20. Seabed site stratigraphic profile measurement device; 21. Seismic source; 30. Navigation and positioning device; 31. Antenna; 40. Floating towed device; 41. Barrel-shaped floating body; 42. Support; 421. First mounting rod; 422. Second mounting rod; 423. Connecting ring; 43. Flange; 44. Connecting rod; 45. Support rod; 50. Power supply device. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1 This invention discloses a floating towed positioning system 1 for stratigraphic measurement of shallow sea wind farm sites, comprising a survey vessel 10, a seabed site stratigraphic profile measuring device 20, a navigation and positioning device 30, a floating towed device 40, and a power supply device 50. The survey vessel 10 floats on the water surface. The seabed site stratigraphic profile measuring device 20, the navigation and positioning device 30, and the power supply device 50 are all mounted on the survey vessel 10. The floating towed device 40 is towed to the stern of the survey vessel 10 by a rope. The survey vessel 10, the seabed site stratigraphic profile measuring device 20, and the navigation and positioning device 30 are all electrically connected to the power supply device 50. The seabed site stratigraphic profile measuring device 20 includes a seismic source 21, which is located at the bottom of the floating towed device 40. The navigation and positioning device 30 includes an antenna 31, which is located at the bottom of the floating towed device 40. At the top, antenna 31 is positioned corresponding to seismic source 21; seabed site stratigraphic profile measuring device 20 is used to measure the seabed site stratigraphic profile of the shallow sea cable and the distribution of influencing metal obstacles; navigation and positioning device 30 is used to provide spatial position for survey vessel 10 and seismic source 21, and to provide spatial position of the site stratigraphic profile for the shallow sea; power supply device 50 is used to supply power to survey vessel 10, seabed site stratigraphic profile measuring device 20 and navigation and positioning device 30; compared with traditional shallow sea site stratigraphic profile measurement and positioning methods, it can effectively complete the measurement and high-precision positioning of intertidal site stratigraphic profile, has high efficiency and intelligence and flexible operability, improves the stability and reliability of data acquisition during shallow sea seabed site stratigraphic profile measurement and high-precision positioning operations, and improves the measurement accuracy of shallow sea seabed site stratigraphic profile.

[0033] Among them, the power supply device 50 adopts a fast-charging mobile power supply with a power of more than 2000W, which eliminates the noise of the survey environment compared to the generator.

[0034] Specifically, the floating towed positioning system 1 for strata measurement at shallow sea wind farm sites can be used by small survey vessels in shallow seas of sea state 4 and below to conduct surveys of wind power routes and substation wind farm sites. It keeps the strata positioning of wind power routes and substation wind farm sites stable, with the positioning accuracy of the seabed strata within ±20cm, thereby improving the quality of strata positioning measurement data and enhancing the technical level.

[0035] The survey vessel 10 has a length greater than 10m, a width greater than 5m, and a draft less than 1m. Antenna 31 is installed at the top of the floating towing device 40, and the seismic source 21 is installed at the bottom of the floating towing device 40. Antenna 31 is located directly above the seismic source 21. There is no deviation between antenna 31 and seismic source 21 in the X and Y directions, therefore, no layback (distance) correction is required.

[0036] For example, the seabed site stratigraphic profile measuring device 20 adopts the G-882 marine magnetic system, which facilitates rapid installation and deployment of the equipment.

[0037] Furthermore, in this embodiment, the seabed site stratigraphic profile measuring device 20 also includes a deck unit and a hydrophone. Both the seismic source 21 and the hydrophone are wired to the deck unit, which is placed in the engine room of the survey vessel 10. The seismic source 21 is connected to the deck unit via a first cable and is connected to the first winch of the survey vessel 10 via the first cable. The seismic source 21 is towed at the stern of the survey vessel 10. The hydrophone is connected to the deck unit via a second cable and is connected to the second winch of the survey vessel 10 via the second cable. The hydrophone is towed at the stern of the survey vessel 10.

[0038] The hydrophone is positioned opposite the seismic source 21. The seismic source 21 is connected to one end of the first cable, and the other end of the first cable is connected to the deck unit via the first winch. The hydrophone is connected to one end of the second cable, and the other end of the second cable is connected to the deck unit via the second winch.

[0039] During use, both the seismic source 21 and the hydrophone are located in the water. The seismic source 21 is used to transmit sound wave signals, and the hydrophone is used to receive sound wave signals. The seismic source 21 transmits the collected sound wave signals to the hydrophone through the deck unit. The hydrophone converts the received sound wave signals into electrical signals and transmits the electrical signals to the deck unit. The deck unit converts and processes the received electrical signals to obtain the seabed site stratigraphic profile data of the shallow sea cable.

[0040] Furthermore, in this embodiment, the navigation and positioning device 30 also includes a third cable and a receiver. The receiver is placed inside the engine room of the survey vessel 10, and the antenna 31 is connected to the receiver via the third cable.

[0041] For example, the navigation and positioning device 30 may use the BeiDou satellite navigation system; of course, the navigation and positioning device 30 may also use the GPS global positioning system.

[0042] Continue to refer to Figure 2 and Figure 3 In this embodiment, the floating towing device 40 includes two barrel-shaped floats 41, a bracket 42, a flange 43, and a connecting rod 44. The two barrel-shaped floats 41 are arranged opposite each other and connected by the bracket 42. The top end of the connecting rod 44 is connected to the bottom end of the bracket 42 through the flange 43. The bottom end of the connecting rod 44 is connected to the seismic source 21. The antenna 31 is connected to the flange 43 through a support rod 45. The bottom end of the support rod 45 is connected to the top end of the bracket 42 through the flange 43. The top end of the support rod 45 is connected to the antenna 31. The antenna 31 is correspondingly arranged with the seismic source 21. The bracket 42 is towed to the stern of the survey vessel 10 by a rope.

[0043] Specifically, the center line of the connecting rod 44 is set parallel to the center line of the support rod 45. In some feasible ways, the center line of the connecting rod 44 is set collinear with the center line of the support rod 45.

[0044] The support rod 45 is longer than 2m, which avoids interference from the survey vessel 10 and the floating towing device 40, and ensures that the positioning accuracy meets the measurement specifications.

[0045] Furthermore, in this embodiment, the bracket 42 is H-shaped.

[0046] The bracket 42 includes a first mounting rod 421 and two second mounting rods 422. The two second mounting rods 422 are spaced apart. The first mounting rod 421 is located between the two second mounting rods 422. The first mounting rod 421 and the two second mounting rods 422 together form an I-shape. The opposite ends of the second mounting rods 422 are respectively connected to two barrel-shaped floats 41. The first mounting rod 421 is located between the two barrel-shaped floats 41.

[0047] Specifically, the centerline of the first mounting rod 421 is perpendicular to the centerline of the second mounting rod 422. The flange 43 is located at the middle of the first mounting rod 421 extending along its centerline. The top end of the connecting rod 44 is connected to the bottom end of the first mounting rod 421 through the flange 43, and the bottom end of the support rod 45 is connected to the top end of the first mounting rod 421 through the flange 43.

[0048] by Figure 2 Taking the orientation shown as an example, a connecting ring 423 is provided on the side of the second mounting rod 422 located at the top, away from the first mounting rod 421. One end of the rope is connected to the connecting ring 423, and the other end of the rope is connected to the stern of the survey vessel 10.

[0049] Continue to refer to Figure 4 Another embodiment provides a measurement method for the floating towed positioning system 1 for geological surveying of shallow sea wind farm sites as described above, including the following steps:

[0050] S1. Analyze basic data on wind, waves, currents, and fishery activities in the shallow sea wind power working area.

[0051] S2. Install a floating positioning system for geological surveying at shallow sea wind farm sites.

[0052] Specifically, the seabed site stratigraphic profile measuring device 20, navigation and positioning device 30, and power supply device 50 are mounted on the survey vessel 10, and the floating towing device 40 is towed to the stern of the survey vessel 10 by a rope, so as to form a shallow sea wind farm site stratigraphic measurement floating towing positioning system 1.

[0053] S3. Conduct navigation tests on the survey vessel 10.

[0054] Test content: The survey vessel 10 maintains a yaw distance of ±1m at a speed of 4 knots or less;

[0055] Test standard: The yaw rate of the investigated vessel 10 is within ±1m when the current direction is different.

[0056] 1) Install the antenna 31 of the navigation and positioning device 30 (DGPS) at the center of the floating towing device 40, which is directly above the source 21.

[0057] Specifically, the antenna 31 is mounted on the top of the first mounting rod 421 via the support rod 45, and the antenna 31 is set in correspondence with the vibration source 21.

[0058] 2) Activate the navigation and positioning device 30 for navigation and record the marked trajectory.

[0059] 3) Arrange east-west and north-south survey lines in the routing area. The east-west survey lines are 200m long and spaced 15m apart, for a total of 3 lines. The north-south survey lines are 200m long and spaced 15m apart, for a total of 3 lines.

[0060] 4) The navigation software in the navigation and positioning device 30 directs the captain to run the survey line at a speed of 2-4 knots while maintaining a yaw distance of ±1m.

[0061] 5) Analyze the offset of each survey line and issue a comparison report.

[0062] S4. Conduct data quality testing on the seabed site stratigraphic profile measuring device 20.

[0063] Test content: Adjust the seismic source 21 and hydrophone cable length of the seabed site stratigraphic profile measuring device 20 to ensure that the positioning is accurate and without deviation from the site stratigraphic profile.

[0064] Completion criteria: The seismic source 21 and hydrophone of the seabed site stratigraphic profile measuring device 20 are towed to the stern of the survey vessel 10 and will not affect the background of the site stratigraphic profile.

[0065] 1) Determine a flat test area based on the stratigraphic profile of the water depth site.

[0066] 2) By controlling the winch of the survey vessel 10, adjusting the cable length of the seismic source 21 and the hydrophone, the deviation range of the positioning (i.e. the measurement position of the strata) from the site stratum profile is determined, and at the same time, the stability of the seismic source 21 under the floating towing device 40 during the navigation of the survey vessel 10 is tested.

[0067] 3) Test whether the data from the seabed site stratigraphic profile measuring device 20 is normal.

[0068] S5. Lay out the survey lines.

[0069] Specifically, the survey lines are laid out in parallel with a 1:2000 scale, with a spacing of 20m between the survey lines.

[0070] S6. The seabed site stratigraphic profile measuring device 20 is used to measure and test the site stratigraphic profile and the distribution of obstacles.

[0071] Underway survey: After the seismic source 21 of the seabed site stratigraphic profile measuring device 20 and the floating towing device 40 enter the water, the survey vessel 10 should maintain a speed of 2-4 knots to avoid stopping or reversing.

[0072] Before the formal measurement operation, the navigation and positioning device 30 was connected and debugged. Different energy levels, excitation frequencies, and measurement ranges were selected to measure and test the site strata profile and the distribution of obstacles.

[0073] S7. After the measurement is completed, check the full coverage and data quality of the seabed site stratigraphic profile measuring device 20 in the SonarWiz software to check the integrity of the data.

[0074] S8. Process and analyze the collected site stratigraphic profile data.

[0075] Specifically, the site stratigraphic profile data collected by the seabed site stratigraphic profile measuring device 20 is processed to remove interference signals on the profile, so as to achieve the best display effect and analyze the site stratigraphic profile and the distribution of obstacles.

[0076] S9. Compile the stratigraphic profile of the seabed site and the distribution map of obstacles, and write a technical report on the results.

[0077] By adopting the measurement method of the floating towed positioning system 1 for stratigraphic measurement of shallow sea wind farm sites, researchers engaged in stratigraphic profile measurement and high-precision positioning of shallow sea wind farm sites have a clear method to follow. Compared with traditional methods for stratigraphic profile measurement and positioning of shallow sea sites, this measurement method is scientific and can easily measure the stratigraphic profile of the site between the wind turbine and the booster station, and between the booster station and the land terminal within a water depth of 15 meters. The measurement process is standardized and the measurement results are accurate and reliable, providing a new standard for stratigraphic profile measurement and high-precision positioning operations of shallow sea wind farm sites.

[0078] The measurement method of the floating towed positioning system 1 for stratigraphic measurement of shallow sea wind farm sites provided in this application includes a survey vessel 10, a seabed site stratigraphic profile measuring device 20, a navigation and positioning device 30, a floating towed device 40, and a power supply device 50. The survey vessel 10 is used to float on the water surface. The seabed site stratigraphic profile measuring device 20, the navigation and positioning device 30, and the power supply device 50 are all mounted on the survey vessel 10. The floating towed device 40 is towed to the stern of the survey vessel 10 by a rope. The survey vessel 10, the seabed site stratigraphic profile measuring device 20, and the navigation and positioning device 30 are all electrically connected to the power supply device 50. The seabed site stratigraphic profile measuring device 20 includes a seismic source 21, which is set on the floating body. At the bottom of the towing device 40, the navigation and positioning device 30 includes an antenna 31, which is set at the top of the floating towing device 40 and is correspondingly set with the seismic source 21. The measurement process is as follows: working condition analysis - equipment installation - underway test - data quality test of the seabed site stratigraphic profile measurement device 20 - survey line layout - underway measurement - data integrity check - site stratigraphic profile data processing and analysis - map and report compilation. Compared with traditional shallow sea site stratigraphic profile measurement and positioning methods, it can effectively complete the measurement and high-precision positioning of intertidal site stratigraphic profiles, and has high efficiency, intelligence and flexible operability. It improves the stability and reliability of data acquisition during shallow sea site stratigraphic profile measurement and high-precision positioning operations, and improves the measurement accuracy of shallow sea site stratigraphic profiles.

[0079] The floating towed positioning system 1 for geological surveying of shallow sea wind farm sites provided by this invention has a simple structure, is easy to install, and is convenient to use.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0081] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A floating towed positioning system for geological surveying of shallow offshore wind farm sites, characterized in that: This includes survey vessels, seabed site stratigraphic profile measuring equipment, navigation and positioning equipment, floating towing equipment, and power supply equipment; The survey vessel is used to float on the water surface. The seabed site stratigraphic profile measuring device, the navigation and positioning device, and the power supply device are all mounted on the survey vessel. The floating towing device is towed to the stern of the survey vessel by a rope. The survey vessel, the seabed site stratigraphic profile measuring device, and the navigation and positioning device are all electrically connected to the power supply device. The seabed site stratigraphic profile measuring device includes a seismic source, which is located at the bottom of the floating towed device. The navigation and positioning device includes an antenna, which is located at the top of the floating towed device. The antenna is positioned corresponding to the seismic source. The seabed site stratigraphic profile measuring device is used to measure the seabed site stratigraphic profile of the shallow sea cable and the distribution of the influencing metal obstacles. The navigation and positioning device is used to provide spatial location for the survey vessel and the seismic source, and to provide spatial location for the site stratigraphic profile in shallow sea areas. The power supply device is used to supply power to the survey vessel, the seabed site stratigraphic profile measuring device, and the navigation and positioning device.

2. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The seabed site stratigraphic profile measuring device also includes a deck unit and a hydrophone. The seismic source and the hydrophone are both wired to the deck unit, which is placed in the engine room of the survey vessel. The seismic source is connected to the deck unit via a first cable, and the seismic source is connected to the first winch of the survey vessel via the first cable. The seismic source is towed at the stern of the survey vessel. The hydrophone is connected to the deck unit via a second cable, and is also connected to the second winch of the survey vessel via the second cable. The hydrophone is towed at the stern of the survey vessel.

3. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The navigation and positioning device also includes a third cable and a receiver, the receiver being placed inside the engine room of the survey vessel, and the antenna being connected to the receiver via the third cable.

4. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The floating towing device includes two barrel-shaped floats, a support frame, a flange, and a connecting rod. The two barrel-shaped floats are arranged opposite each other and connected by the support frame. The top end of the connecting rod is connected to the bottom end of the support frame via the flange, and the bottom end of the connecting rod is connected to the vibration source. The antenna is connected to the flange via a support rod, and the bottom end of the support rod is connected to the top end of the support frame via the flange. The top end of the support rod is connected to the antenna, and the antenna is correspondingly arranged to the vibration source. The support frame is towed to the stern of the survey vessel by the rope.

5. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 4, characterized in that: The length of the support rod is greater than 2m.

6. The floating positioning system for geological surveying of shallow sea wind farm sites according to claim 4, characterized in that: The support frame is H-shaped.

7. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The navigation and positioning device uses the BeiDou satellite navigation system.

8. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The seabed site stratigraphic profile measurement device uses the G-882 marine magnetic system.

9. The floating positioning system for stratigraphic measurement of shallow sea wind farm sites according to claim 1, characterized in that: The power supply device is a fast-charging portable power bank.

10. A measurement method for a floating towed positioning system for stratigraphic measurement of shallow offshore wind farm sites as described in any one of claims 1 to 9, characterized in that: Includes the following steps: Basic data on wind, waves, currents, and fishery activities in the shallow sea wind power working area; Install the floating positioning system for geological surveying at the shallow sea wind farm site; The survey vessel underwent a sea trial; Data quality testing was performed on the seabed site stratigraphic profile measuring device. The survey lines are laid out; The aforementioned seabed site stratigraphic profile measuring device was used to measure and test the site stratigraphic profile and the distribution of obstacles; After the measurement is completed, check the full coverage and data quality of the seabed site stratigraphic profile measurement device in the SonarWiz software; The collected site stratigraphic profile data will be processed and analyzed; Prepare a stratigraphic profile of the seabed site and a map showing the distribution of obstacles, and compile a technical report on the findings.

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