Extension arm design method, measuring device, system, apparatus, medium, and product

Abstract

The application discloses a method for designing an extension arm, a measuring device, a system, equipment, a medium and a product, and relates to the field of offshore observation. The method comprises the following steps: determining a far-field observation mark line of an automatic spectral measurement system of an observation platform based on a to-be-designed height of an extension arm; determining platform shadow areas of the observation platform at different times within three date points of summer solstice, autumnal equinox and winter solstice, respectively; calculating a projection position of an instantaneous observation point of the automatic spectral measurement system within one year based on the to-be-designed height and a to-be-designed length of the extension arm; and determining the height and the length of the extension arm under the condition that a far-field observation condition is met in a collection period according to the far-field observation mark line, the platform shadow areas and the projection position of the instantaneous observation point. The application can effectively improve the accuracy and efficiency of obtaining apparent optical data on an unmanned automatic observation observation platform.

Description

Technical Field

[0001] This application relates to the field of marine observation, and in particular to an extended boom design method, measuring device, system, equipment, medium and product. Background Technology

[0002] In the case of long-term unattended and automatic observation, the automatic spectral measurement system of the ocean color satellite inspection field needs to acquire more reliable data according to the observation geometry requirements. However, the superstructure of the offshore platform will interfere with the light field of the surface method used by the automatic spectral measurement system, affecting the accuracy and efficiency of the apparent optical data.

[0003] Therefore, how to effectively solve the problem of light field interference caused by the superstructure of offshore platforms to the light field of the water surface is an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this application is to provide an extension arm design method, measuring device, system, equipment, medium, and product that can effectively improve the accuracy and efficiency of acquiring surface optical data on an unattended automatic observation platform.

[0005] To achieve the above objectives, this application provides the following solution.

[0006] In a first aspect, this application provides a method for designing an extension arm, comprising: determining the far-field observation marker line of an automatic spectral measurement system for an observation platform based on the designed height of the extension arm; the extension arm being installed on the observation platform and housing the automatic spectral measurement system for marine observation; determining the platform's shadow area at different times within the three dates of the summer solstice, autumnal equinox, and winter solstice; calculating the instantaneous observation point projection position of the automatic spectral measurement system within a year based on the designed height and designed length of the extension arm; the extension arm being an L-shaped structure, comprising two segments... The lengths of the arms are respectively used as the designed height and designed length of the extension arm; based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point, the height and length of the extension arm are determined under the far-field observation conditions during the acquisition period; the far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are all outside the platform shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice.

[0007] Secondly, this application provides a marine optical measurement device, comprising: an observation platform, an automatic spectral measurement system, and an extension arm; the extension arm is obtained by the above-mentioned extension arm design method; the bottom end of the extension arm corresponding to the height is set on the observation platform, and the automatic spectral measurement system is placed at the top end of the extension arm corresponding to the length; the automatic spectral measurement system is used for marine observation.

[0008] Thirdly, this application provides an extended arm design system, including: a marking line determination module, a shadow area determination module, a projection position calculation module, and a size determination module.

[0009] The marker line determination module is used to determine the far-field observation marker line of the automatic spectral measurement system of the observation platform based on the designed height of the extended arm; the extended arm is used to be installed on the observation platform and to mount the automatic spectral measurement system for marine observation. The shadow area determination module is used to determine the platform's shadow area at different times within the three date points of summer solstice, autumnal equinox, and winter solstice. The projection position calculation module is used to calculate the instantaneous observation point projection position of the automatic spectral measurement system within one year based on the designed height and designed length of the extended arm; the extended arm has an L-shaped structure, and the lengths of the two arms forming the L-shape are respectively used as the designed height and designed length of the extended arm. The size determination module is used to determine the height and length of the extended arm under the far-field observation conditions during the acquisition period, based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point. The far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are all outside the platform shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice.

[0010] Fourthly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to implement the above-described extension arm design method.

[0011] Fifthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described extension arm design method.

[0012] Sixthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the above-described extension arm design method.

[0013] According to the specific embodiments provided in this application, this application has the following technical effects.

[0014] This application provides an extension arm design method, measuring device, system, equipment, medium, and product. When designing the height and length of the extension arm, the shortest distance from the projection position of the instantaneous observation point during the acquisition period to the edge line of the observation platform is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, ensuring far-field observation. Furthermore, the projection positions of each instantaneous observation point during the acquisition period are all outside the platform's shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice, overcoming the light field interference from the superstructure of the observation platform. As a result, the automatic spectral measurement system is in a far-field observation state throughout the year's data acquisition period, effectively improving the accuracy and efficiency of obtaining apparent spectral data on an unattended automatic observation platform. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart illustrating an extension arm design method provided in an embodiment of this application.

[0017] Figure 2 A schematic diagram showing the connection relationship between the observation platform, the automatic spectral measurement system, and the extension arm provided in the embodiments of this application.

[0018] Figure 3 This is a schematic diagram of the platform shaded area at different date points provided in the embodiments of this application.

[0019] Figure 4 This is a schematic diagram of the structure of the extension arm provided in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the functional modules of an extension arm design system provided in an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In one exemplary embodiment, such as Figure 1 As shown, an extension arm design method is provided, including the following steps 101 to 104.

[0025] Step 101: Based on the designed height of the extension arm, determine the far-field observation marker line of the automatic spectral measurement system of the observation platform; the extension arm is used to be set on the observation platform and to install the automatic spectral measurement system for marine observation.

[0026] Step 102: Determine the shadow area of ​​the observation platform at different times during the summer solstice, autumnal equinox, and winter solstice.

[0027] Step 103: Based on the design height and design length of the extension arm, calculate the instantaneous observation point projection position of the automatic spectral measurement system within one year; the extension arm is an L-shaped structure, and the lengths of the two arms that make up the L-shaped structure are respectively used as the design height and design length of the extension arm.

[0028] Step 104: Based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point, determine the height and length of the extended arm under the far-field observation conditions during the acquisition period; the far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are all outside the platform shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice.

[0029] Implementing steps 101 to 104 effectively improves the accuracy and efficiency of acquiring surface spectral data on unattended automatic observation platforms. While the surface-level method can directly measure the sea surface, suitable for the long-term automatic observation needs of observation platforms, it places high demands on the instrument's field of view and necessitates avoiding the influence and interference of the observation platform's structure. The method described in this application ensures that the automatic spectral measurement system can acquire more reliable data strictly according to the observation geometry requirements under unattended conditions.

[0030] Figure 2 The diagram shows the connection relationships between the observation platform, the automatic spectral measurement system, and the extension arm. The four corner points of the observation platform are shown. Figure 2 The numbers A, B, C, and D are respectively labeled as A, B, C, and D. The line connecting A to the automatic spectral measurement system represents the extension arm. Figure 2 The N in the diagram indicates true north.

[0031] In another exemplary embodiment of this application, step 101 described above may be replaced by steps 201 to 202.

[0032] Step 201: Based on the designed height of the extended boom and the bow azimuth of the observation platform, use the formula... and The far-field observation markers at the four corners of the observation platform are determined respectively; where, This is the location of the far-field observation marker point for one corner of the observation platform. , These are the x and y coordinates of a far-field observation marker point at a corner of the observation platform. The location of a corner point of the observation platform. , These are the x and y coordinates of a corner point on the observation platform, respectively. To extend the designed height of the outrigger, To observe the bow azimuth of the observation platform.

[0033] Step 202: Connect the far-field observation markers at the four corners of the observation platform in sequence with straight lines to obtain the far-field observation marker lines of the automatic spectral measurement system of the observation platform; the far-field observation marker lines encircle the observation platform, and the vertical distances from the far-field observation marker lines on the same side of the observation platform to the edge line of the observation platform are all equal.

[0034] Far-field observation markers (referred to as far-field markers) are as follows: Figure 3 The yellow dashed line in the middle, Figure 3 Only a portion of the far-field observation marker lines are shown. These marker lines will be used to determine whether the sea surface observation point is located in the "far-field observation" area. The extended boom (referred to as the boom) is shown below. Figure 3 The solid yellow line in the image represents an automated spectral measurement system (also known as a spectrometer). Figure 3 The red asterisk in the middle.

[0035] In another exemplary embodiment of this application, the platform shadow area at different times of the three dates of summer solstice, autumnal equinox and winter solstice (other dates are all within the range of these three dates) is calculated. The specific process can be replaced by the following steps 301 to 305.

[0036] Step 301: Take each time point within the three dates of summer solstice, autumnal equinox, and winter solstice as the target time point.

[0037] Step 302: Based on the solar zenith angle at the target time, use the formula... The length of the shadow cast by the observation platform on the sea surface is obtained; where, The length of the shadow cast by the observation platform on the sea surface. For the height of the observation platform, This is the solar zenith angle.

[0038] That is, the shadow length is calculated from the height of the observation platform and the tangent of the solar zenith angle.

[0039] Step 303: Based on the length of the shadow cast by the observation platform on the sea surface and the solar azimuth at the target time, use the formula... and The displacement between the observation platform and the observation platform at the farthest point of the shadow on the sea surface at the target time point is determined; where, , These represent the lateral and longitudinal components of the displacement between the observation platform and the furthest point of its shadow on the sea surface. This is the solar azimuth angle.

[0040] The displacement between the observation platform and the furthest point of the shadow on the sea surface reflects the range of the shadow in the two-dimensional coordinate system, with its boundaries being the sine and cosine values ​​of the shadow length multiplied by the solar azimuth angle.

[0041] Step 304: For the target time point, subtract the displacement from the position coordinates of the four corner points of the observation platform to obtain the coordinates of the four corner points of the observation platform at the four shadowed corner points at sea.

[0042] Step 305: For the target time point, the coordinates of the side corner points that form the shadow on the observation platform and the corresponding shadow corner point coordinates are used to form the platform shadow area at the target time point, thereby obtaining the platform shadow area of ​​the observation platform at different times within the three dates of summer solstice, autumnal equinox and winter solstice.

[0043] Based on steps 301 to 305, the annual changes in the platform's shadow area can be further analyzed.

[0044] Figure 3 Part (a) shows the shaded area of ​​the platform at the summer solstice date. Figure 3 Part (b) shows the shaded area of ​​the platform at the date of the autumnal equinox. Figure 3 Part (c) shows the shaded area of ​​the platform at the winter solstice date. A point on the observation radius (the observation point's height multiplied by the tangent of the observed nadir angle) is called the observation point. Figure 3 The observation points are shown from 9:00 to 16:00. Figure 3 A red dot is shown on the observation radius, which is called the time-limited observation point. Figure 3 The red dot furthest from the observation platform and the observation radius represents the sun.

[0045] In another exemplary embodiment of this application, the projection position of the instantaneous observation point is determined by parameters such as the length of the extended arm, the azimuth angle of the extended arm, the observation radius, the solar azimuth angle, and the azimuth angle relative to the sun observed by the automatic spectral measurement system. Therefore, step 103 can be replaced by steps 401 to 403.

[0046] Step 401: Based on the designed height and length of the extension arm, and the azimuth angle of the extension arm, use the formula... and Determine the coordinates of the extended arm; where, To extend the coordinates of the outrigger, , These are the x-coordinate and y-coordinate, respectively. To extend the designed length of the outrigger, The azimuth angle for extending the outrigger.

[0047] Step 402: Based on the observation point altitude and the solar zenith angle, use the formula... Determine the observation radius of the automatic spectral measurement system; where, The observation radius of the automatic spectral measurement system. This represents the height of the observation point.

[0048] Step 403: Based on the coordinates of the extended arm and the observation radius of the automatic spectral measurement system, use the formula... and The projected positions of instantaneous observation points of the automatic spectral measurement system over a year are obtained; where, This refers to the instantaneous observation point projection position of the automatic spectral measurement system. , These are the x and y coordinates of the instantaneous observation point projection position of the automatic spectral measurement system, respectively. To observe the azimuth angle relative to the sun for an automatic spectral measurement system.

[0049] In another exemplary embodiment of this application, the objective of the method is to ensure both far-field observation and that the projected position of the instantaneous observation point is not within the shadow area. The criterion for far-field observation is that the shortest distance from the projected position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform. The criterion for ensuring that the projected position of the instantaneous observation point is not within the shadow area is that the projected positions of all instantaneous observation points during the acquisition period are outside the platform's shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice. In other words, the projected position of the instantaneous observation point is not located within any side shadow quadrilateral of the platform's shadow area.

[0050] The aforementioned data collection period refers to the time range where the solar altitude angle is greater than 30 degrees, for example, from 9:00 AM to 4:00 PM Beijing time. The projection position of the instantaneous observation point within this time range, satisfying the principle of being more in the far field and outside the shadow, while also considering engineering feasibility, allows for the determination of the length and height of the extended arm.

[0051] Figure 4 This illustrates the extended arm obtained by the method of this application.

[0052] The superstructure of the observation platform (also known as the offshore platform) can interfere with the light field of the surface-to-water method. To ensure that the automatic spectral measurement system can acquire more reliable data in strict accordance with the observation geometry requirements when unattended, the method of this application determines the far-field observation marker line of the offshore platform through platform parameters, instrument parameters, and time parameters, calculates the shadow area of ​​the platform, and designs and installs an extension arm of a specific size on the offshore platform. The automatic spectral measurement system is placed at the top of the extension arm. After simulation verification, the automatic spectral measurement system is in the far-field observation state throughout the data acquisition period of the whole year, ensuring the accuracy of the surface-to-water method measurement.

[0053] This application meets the needs of a dedicated ocean color satellite testing field for long-term unattended and automatic observation, effectively solves the problem of light field interference from the superstructure of offshore platforms on the water surface, and ensures the accuracy and efficiency of surface spectral data.

[0054] The method described in this application can be executed by computer equipment, specifically by a computer device such as a terminal or server alone, or by a terminal and a server together.

[0055] Based on the same inventive concept, this application also provides a marine optical measurement device that applies the extended arm design method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more marine optical measurement device embodiments provided below can be found in the limitations of the extended arm design method described above, and will not be repeated here.

[0056] In one exemplary embodiment, a marine optical measurement device is provided, comprising: an observation platform, an automatic spectral measurement system, and an extension arm. The extension arm is obtained using the extension arm design method described above; the bottom end of the extension arm, corresponding to its height, is disposed on the observation platform, and the automatic spectral measurement system is disposed at the top end of the extension arm, corresponding to its length; the automatic spectral measurement system is used for marine observation.

[0057] In one exemplary embodiment, an extendable arm design system is provided, such as Figure 5As shown, it includes: a marker line determination module, a shadow area determination module, a projection position calculation module, and a size determination module.

[0058] The marker line determination module is used to determine the far-field observation marker line of the automatic spectral measurement system of the observation platform based on the designed height of the extended arm; the extended arm is used to be installed on the observation platform and to mount the automatic spectral measurement system for marine observation. The shadow area determination module is used to determine the platform's shadow area at different times within the three date points of summer solstice, autumnal equinox, and winter solstice. The projection position calculation module is used to calculate the instantaneous observation point projection position of the automatic spectral measurement system within one year based on the designed height and designed length of the extended arm; the extended arm has an L-shaped structure, and the lengths of the two arms forming the L-shape are respectively used as the designed height and designed length of the extended arm. The size determination module is used to determine the height and length of the extended arm under the far-field observation conditions during the acquisition period, based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point. The far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are all outside the platform shadow area at the same time during the summer solstice, autumnal equinox, and winter solstice.

[0059] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 6 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores the height and length of the extension arm. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements an extension arm design method.

[0060] Those skilled in the art will understand that Figure 6The structures shown are merely block diagrams of some structures related to the present application and do not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements. In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0061] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0062] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0063] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0064] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0065] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for designing an extension arm, characterized in that, include: Based on the designed height of the extended arm, the far-field observation marker line of the automatic spectral measurement system of the observation platform is determined; the extended arm is used to be set on the observation platform and to install the automatic spectral measurement system for marine observation. The shadow area of ​​the observation platform at different times within the three dates of summer solstice, autumnal equinox, and winter solstice was determined respectively; Based on the designed height and designed length of the extension arm, the instantaneous observation point projection position of the automatic spectral measurement system within one year is calculated; the extension arm is an L-shaped structure, and the lengths of the two arms that make up the L-shaped structure are respectively used as the designed height and designed length of the extension arm. Based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point, determine the height and length of the extended arm under the far-field observation conditions during the data acquisition period; The far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are outside the platform shadow area at the same time on the three dates of summer solstice, autumn equinox, and winter solstice. The shadow regions of the observation platform were determined at different times during the summer solstice, autumnal equinox, and winter solstice, specifically including: Each time point within the three dates of summer solstice, autumnal equinox, and winter solstice is taken as the target time point; Based on the solar zenith angle at the target time, use the formula The length of the shadow cast by the observation platform on the sea surface is obtained; where, To measure the length of the shadow cast by the observation platform on the sea surface, For the height of the observation platform, The solar zenith angle; Based on the length of the shadow cast by the observation platform on the sea surface and the solar azimuth angle at the target time, the formula is used. and The displacement between the observation platform and the observation platform at the farthest point of the shadow on the sea surface at the target time point is determined; where, , These represent the lateral and longitudinal components of the displacement between the observation platform and the furthest point of its shadow on the sea surface. The azimuth of the sun; For the target time point, subtract the displacement from the position coordinates of the four corner points of the observation platform to obtain the coordinates of the four shadow corner points of the four corner points of the observation platform at the sea; For the target time point, the coordinates of the side corner points that form the shadow on the observation platform and the corresponding shadow corner point coordinates are used to form the platform shadow area at the target time point, thereby obtaining the platform shadow area at different times within the three dates of summer solstice, autumnal equinox and winter solstice.

2. The extension arm design method according to claim 1, characterized in that, Based on the designed height of the extended arm, the far-field observation marker line of the automatic spectral measurement system of the observation platform is determined, specifically including: Based on the designed height of the extended boom and the bow azimuth of the observation platform, using the formula... and The far-field observation markers at the four corners of the observation platform are determined respectively; where, This is the location of the far-field observation marker point for one corner of the observation platform. , These are the x and y coordinates of a far-field observation marker point at a corner of the observation platform. The location of a corner point of the observation platform. , These are the x and y coordinates of a corner point on the observation platform, respectively. To extend the designed height of the outrigger, To observe the bow azimuth of the observation platform; Connect the far-field observation markers at the four corners of the observation platform in sequence to obtain the far-field observation marker lines of the automatic spectral measurement system of the observation platform; the far-field observation marker lines encircle the observation platform, and the vertical distances from the far-field observation marker lines on the same side of the observation platform to the edge line of the observation platform are all equal.

3. The extension arm design method according to claim 1, characterized in that, Based on the designed height and designed length of the extended arm, the projected positions of the instantaneous observation points of the automatic spectral measurement system over a year are calculated, specifically including: Based on the designed height and length of the extension arm, and the azimuth angle of the extension arm, the formula is used... and Determine the coordinates of the extended arm; where, To extend the coordinates of the outrigger, , These are the x-coordinate and y-coordinate, respectively. To extend the designed length of the outrigger, The azimuth angle for extending the outrigger; Based on the altitude of the observation point and the solar zenith angle, the formula is used. Determine the observation radius of the automatic spectral measurement system; where, The observation radius of the automatic spectral measurement system. The height of the observation point. The solar zenith angle; Based on the coordinates of the extended arm and the observation radius of the automatic spectral measurement system, using the formula... and The projected positions of instantaneous observation points of the automatic spectral measurement system over a year are obtained; where, This represents the instantaneous observation point projection position of the automatic spectral measurement system. , These are the x and y coordinates of the instantaneous observation point projection position of the automatic spectral measurement system, respectively. The azimuth of the sun. To observe the azimuth angle relative to the sun for an automatic spectral measurement system.

4. The extension arm design method according to claim 1, characterized in that, The data collection period refers to the time range during which the solar altitude angle is greater than 30 degrees.

5. A marine optical measurement device, characterized in that, include: Observation platform, automatic spectral measurement system and extension arm; The extension arm is obtained by the extension arm design method according to any one of claims 1-4; The bottom end of the extended arm, corresponding to its height, is set on the observation platform, and the automatic spectral measurement system is placed at the top end of the extended arm, corresponding to its length. Automated spectral measurement systems are used for marine observation.

6. An extendable arm design system, characterized in that, include: The marker line determination module is used to determine the far-field observation marker line of the automatic spectral measurement system of the observation platform based on the designed height of the extension arm; the extension arm is used to be set on the observation platform and to install the automatic spectral measurement system for marine observation. The shadow area determination module is used to determine the shadow area of ​​the observation platform at different times during the summer solstice, autumnal equinox, and winter solstice. The projection position calculation module is used to calculate the projection position of the instantaneous observation point of the automatic spectral measurement system within one year based on the designed height and designed length of the extension arm; the extension arm is an L-shaped structure, and the lengths of the two arms that make up the L-shaped structure are respectively used as the designed height and designed length of the extension arm. The size determination module is used to determine the height and length of the extended arm under the conditions of far-field observation during the acquisition period, based on the far-field observation marker line, the platform shadow area, and the projection position of the instantaneous observation point. The far-field observation conditions include: the shortest distance from the projection position of the instantaneous observation point to the edge line of the observation platform during the acquisition period is greater than or equal to the vertical distance from the far-field observation marker line to the edge line of the observation platform, and the projection positions of each instantaneous observation point during the acquisition period are outside the platform shadow area at the same time on the three dates of summer solstice, autumn equinox, and winter solstice. The shadow regions of the observation platform were determined at different times during the summer solstice, autumnal equinox, and winter solstice, specifically including: Each time point within the three dates of summer solstice, autumnal equinox, and winter solstice is taken as the target time point; Based on the solar zenith angle at the target time, use the formula The length of the shadow cast by the observation platform on the sea surface is obtained; where, To measure the length of the shadow cast by the observation platform on the sea surface, For the height of the observation platform, The solar zenith angle; Based on the length of the shadow cast by the observation platform on the sea surface and the solar azimuth angle at the target time, the formula is used. and The displacement between the observation platform and the observation platform at the farthest point of the shadow on the sea surface at the target time point is determined; where, , These represent the lateral and longitudinal components of the displacement between the observation platform and the furthest point of its shadow on the sea surface. The azimuth of the sun; For the target time point, subtract the displacement from the position coordinates of the four corner points of the observation platform to obtain the coordinates of the four shadow corner points of the four corner points of the observation platform at the sea; For the target time point, the coordinates of the side corner points that form the shadow on the observation platform and the corresponding shadow corner point coordinates are used to form the platform shadow area at the target time point, thereby obtaining the platform shadow area at different times within the three dates of summer solstice, autumnal equinox and winter solstice.

7. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that the processor executes the computer program to implement the extension arm design method according to any one of claims 1-4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the extension arm design method according to any one of claims 1-4.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the extension arm design method according to any one of claims 1-4.

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