Snow water equivalent obtaining method and device, storage medium and electronic equipment

Abstract

The invention provides a snow water equivalent obtaining method and device, a storage medium and electronic equipment, and the method comprises the steps: determining a gamma radiation count theoretical value based on a pre-constructed time point and gamma radiation count conversion relational expression; and according to the gamma ray counting survey value, the gamma radiation counting theoretical value and the attenuation coefficient, determining the snow water equivalent of the survey area at the snowy time point. According to the method, the dynamic change of the soil state is automatically adapted by dynamically tracking the change of the gamma radiation counting theoretical value, and the accuracy of the snow water equivalent obtaining result is guaranteed. The requirement for soil moisture measurement when the snow water equivalent is obtained through a gamma ray method can be avoided, and the complex influence caused by the soil freezing and thawing process is considered.

Description

Technical Field

[0001] The present invention relates to the field of exploration, and more particularly, to a method, device, storage medium, and electronic device for obtaining snow water equivalent. Background Art

[0002] Snow cover is an important source of fresh water in many regions and is also a key aspect in climate change and hydrological research. As an important snow cover parameter, snow water equivalent can directly characterize the changes in the regional water cycle and energy balance. Therefore, stable, accurate, and sustainable estimation of snow water equivalent is of great significance for research such as climate and ecological change studies and scientific management of water resources.

[0003] Currently, snow water equivalent is mainly obtained through manual or site observations, and the measurement methods are too complex for alpine regions. Therefore, how to quickly and accurately measure snow water equivalent in alpine regions has become a difficult problem that concerns those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide a method, device, storage medium, and electronic device for obtaining snow water equivalent to improve the above problems.

[0005] To achieve the above purpose, the technical solutions adopted in the embodiments of the present invention are as follows:

[0006] In a first aspect, an embodiment of the present invention provides a method for obtaining snow water equivalent, the method including:

[0007] Based on a pre-constructed conversion relationship between time points and gamma radiation counts, determining a theoretical value of gamma radiation counts, where the theoretical value of gamma radiation counts is the dynamic gamma radiation count without snow influence corresponding to the snow-covered time point in the surveyed area;

[0008] According to the measured value of gamma ray counts, the theoretical value of gamma radiation counts, and the attenuation coefficient, determining the snow water equivalent of the surveyed area at the snow-covered time point;

[0009] Wherein, the measured value of gamma ray counts is the measured value of gamma ray counts in the surveyed area at the snow-covered time point, and the attenuation coefficient is the empirically determined attenuation coefficient related to water content in the surveyed area.

[0010] In a second aspect, an embodiment of the present invention provides a device for obtaining snow water equivalent, the device including:

[0011] A first processing unit, configured to determine a theoretical value of gamma radiation counts based on a pre-constructed conversion relationship between time points and gamma radiation counts, where the theoretical value of gamma radiation counts is the dynamic gamma radiation count without snow influence corresponding to the snow-covered time point in the surveyed area;

[0012] A second processing unit, configured to determine the snow water equivalent of the surveyed area at the snow time point according to the gamma ray count survey value, the gamma radiation count theoretical value, and the attenuation coefficient;

[0013] Wherein, the gamma ray count survey value is the survey value of the gamma ray count in the surveyed area at the snow time point, and the attenuation coefficient is the attenuation coefficient of the surveyed area empirically related to the water content.

[0014] In a third aspect, an embodiment of the present invention provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above method is implemented.

[0015] In a fourth aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes: a processor and a memory, and the memory is used to store one or more programs; when the one or more programs are executed by the processor, the above method is implemented.

[0016] Compared with the prior art, a method, device, storage medium and electronic device for obtaining snow water equivalent provided by an embodiment of the present invention determine the gamma radiation count theoretical value based on a pre-constructed conversion relationship between the time point and the gamma radiation count. The gamma radiation count theoretical value is the dynamic gamma radiation count without snow influence corresponding to the surveyed area at the snow time point; according to the gamma ray count survey value, the gamma radiation count theoretical value, and the attenuation coefficient, determine the snow water equivalent of the surveyed area at the snow time point; wherein, the gamma ray count survey value is the survey value of the gamma ray count in the surveyed area at the snow time point, and the attenuation coefficient is the attenuation coefficient of the surveyed area empirically related to the water content. It can avoid the measurement requirement of soil moisture, fundamentally solve the problem of difficult soil moisture measurement in alpine regions, combine the complex influence brought by the soil freezing process, automatically adapt to the dynamic change of the soil state by dynamically tracking the change of the gamma radiation count theoretical value, and ensure the accuracy of the obtained result of the snow water equivalent.

[0017] To make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and described in detail as follows. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1Schematic structural diagram of the electronic device provided by the embodiment of the present invention.

[0020] Figure 2 One of the flowchart diagrams of the snow water equivalent acquisition method provided by the embodiment of the present invention.

[0021] Figure 3 Another flowchart diagram of the snow water equivalent acquisition method provided by the embodiment of the present invention.

[0022] Figure 4 Another flowchart diagram of the snow water equivalent acquisition method provided by the embodiment of the present invention.

[0023] Figure 5 Unit schematic diagram of the snow water equivalent acquisition device provided by the embodiment of the present invention.

[0024] In the figure: 10 - processor; 11 - memory; 12 - bus; 13 - communication interface; 1001 - first processing unit; 1002 - second processing unit. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arrangement" and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0032] In some scenarios, gamma ray measurement technology can be used for snow water equivalent measurement. However, the application of gamma ray measurement technology in alpine regions faces serious challenges. Gamma ray measurement technology relies too much on the accurate measurement of soil moisture. However, in alpine regions, due to the existence of frozen soil, it is extremely difficult to measure soil moisture. Even if measurement data is obtained, its accuracy is difficult to guarantee.

[0033] In currently widely used models, the assumed relationship between soil moisture and gamma rays lacks strict experimental verification. Especially during the freezing process of the soil, due to significant changes in physical properties, the propagation mechanism of gamma rays becomes more complex. Therefore, the method of simply relying on soil moisture to correct gamma rays under the snow cover can no longer meet the actual needs of alpine regions.

[0034] The root cause of these problems lies in their failure to fully consider the particularity of alpine regions. On the one hand, the applicability of traditional soil moisture measurement methods in such regions is extremely low; on the other hand, the physical property changes brought about by the soil freezing process make the existing simplified theoretical models unable to accurately reflect the complexity of the actual situation.

[0035] Therefore, there is an urgent need to develop a method that can quickly and accurately measure the snow water equivalent without relying on accurate measurement of soil moisture.

[0036] Embodiments of the present invention provide an electronic device, which can be a mobile phone device, a computer device, a server device, etc. Please refer to Figure 1 , the structural schematic diagram of the electronic device. The electronic device includes a processor 10, a memory 11, and a bus 12. The processor 10 and the memory 11 are connected through the bus 12, and the processor 10 is used to execute an executable module stored in the memory 11, such as a computer program.

[0037] The processor 10 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the snow water equivalent acquisition method can be completed through the integrated logic circuit in the hardware of the processor 10 or instructions in software form. The above-mentioned processor 10 can be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it can also be a digital signal processor (DSP for short), an application specific integrated circuit (ASIC for short), a field-programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0038] The memory 11 may include a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory, such as at least one disk memory.

[0039] The bus 12 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus. Figure 1 Although only one bidirectional arrow is used in the figure, it does not mean that there is only one bus 12 or only one type of bus 12 .

[0040] The memory 11 is used to store programs, such as programs corresponding to the snow water equivalent acquisition device. The snow water equivalent acquisition device includes at least one software function module that can be stored in the memory 11 in the form of software or firmware or fixed in the operating system (OS) of the electronic device. After receiving the execution instruction, the processor 10 executes the program to implement the snow water equivalent acquisition method.

[0041] Possibly, the electronic device provided by the embodiment of the present invention further includes a communication interface 13. The communication interface 13 is connected to the processor 10 via a bus.

[0042] It should be understood that Figure 1 The structure shown is only a schematic diagram of a portion of the electronic device. The electronic device may also include Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0043] A snow water equivalent acquisition method provided by an embodiment of the present invention can be applied to, but not limited to, Figure 1 For detailed procedures, please refer to the electronic equipment shown in Figure 2 The snow water equivalent acquisition method includes: S30 and S60, which are described in detail as follows.

[0044] S30, determining a theoretical value of gamma radiation counts based on a pre-constructed time point and gamma radiation count conversion relationship.

[0045] The theoretical value of gamma radiation count is the dynamic gamma radiation count under the influence of no snow in the survey area at the snow time point. The snow time point is the survey time point that does not meet the no snow judgment condition during the survey period. The no snow judgment condition is that the snow depth in the survey area at the survey time point is 0.

[0046] It should be noted that by substituting the snow time point into the pre-constructed conversion relationship between the time point and the gamma radiation count, the theoretical value of the corresponding gamma radiation count can be determined. The theoretical values of the gamma radiation count corresponding to different snow time points are different, and the theoretical value of the gamma radiation count is dynamically changing and varies in real time with the changes in properties such as soil freezing and thawing. Optionally, the pre-constructed conversion relationship between the time point and the gamma radiation count corresponds to the changes in properties such as soil freezing and thawing.

[0047] S60. Determine the snow water equivalent at the snow time point in the surveyed area according to the gamma ray count survey value, the theoretical value of the gamma radiation count, and the attenuation coefficient.

[0048] Among them, the gamma ray count survey value is the survey value of the gamma ray count in the surveyed area at the snow time point, and the attenuation coefficient is the empirically determined attenuation coefficient related to the water content in the surveyed area.

[0049] In an alternative embodiment, the ground gamma ray count is continuously measured by a GMON or similar instrument, and the count is statistically analyzed at the survey time point to determine the survey value of the gamma ray count in the surveyed area at the survey time point. The interval between adjacent survey time points is a preset interval, for example, half an hour.

[0050] Optionally, the formula for the snow water equivalent is:

[0051] SWE = β·ln(N / Tm);

[0052] Among them, N represents the gamma ray count survey value (obtained by detecting with a GMON instrument), Tm represents the theoretical value of the gamma radiation count, β represents the empirically determined attenuation coefficient of water in the surveyed area, and SWE represents the snow water equivalent.

[0053] In the method for obtaining the snow water equivalent provided in the embodiments of the present invention, the need for measuring soil moisture can be avoided, the problem of difficult measurement of soil moisture in alpine regions is fundamentally solved, the complex influence brought by the soil freezing process is combined, and by dynamically tracking the change of the theoretical value of the gamma radiation count, it automatically adapts to the dynamic change of the soil state, ensuring the accuracy of the obtained result of the snow water equivalent.

[0054] Please refer to Figure 3 , in an alternative embodiment, the method for obtaining the snow water equivalent further includes: S40 and S50, which are specifically described as follows.

[0055] S40. Obtain the actual snow water equivalent at M sample time points in the surveyed area.

[0056] Among them, the sample time point is the snow time point.

[0057] Optionally, step S40 of obtaining the actual snow water equivalent of the surveyed area at M sample time points includes steps S41 and S42, which are specifically described as follows.

[0058] S41, obtain the snow depth and snow density of the surveyed area at the sample time point.

[0059] During the snow period, the snow depth can be measured with a ruler, and the snow density can be measured with a fixed-volume container such as a snow shovel. The actual snow water equivalent is obtained by multiplying the snow depth by the density. Conduct several field measurements of the snow water equivalent as the true values of the snow depth and snow density at the sample time point.

[0060] S42, determine the actual snow water equivalent at the sample time point based on the snow depth and snow density at the sample time point.

[0061] S50, determine the attenuation coefficient of the empirical water in the surveyed area based on the actual snow water equivalent at the sample time point, the theoretical value of gamma radiation count corresponding to the sample time point, and the measured value of gamma ray count corresponding to the sample time point.

[0062] Optionally, step S50 of determining the attenuation coefficient of the empirical water in the surveyed area based on the actual snow water equivalent at the sample time point, the theoretical value of gamma radiation count corresponding to the sample time point, and the measured value of gamma ray count corresponding to the sample time point includes step S51, which is specifically described as follows.

[0063] S51, combine the actual snow water equivalent at the sample time point, the theoretical value of gamma radiation count corresponding to the sample time point, and the measured value of gamma ray count corresponding to the sample time point, and perform least squares calibration to obtain the attenuation coefficient of the empirical water in the surveyed area.

[0064] Please refer to Figure 4 , in an alternative embodiment, the snow water equivalent acquisition method further includes steps S10 and S20, which are specifically described as follows.

[0065] S10, obtain the gamma ray count without snow in the surveyed area during the survey period.

[0066] Among them, the gamma ray count without snow is the measured value of the gamma ray count at the snow-free time point in the surveyed area.

[0067] Optionally, step S10 of obtaining the gamma ray count without snow in the surveyed area during the survey period includes steps S11 and S12, which are specifically described as follows.

[0068] S11, determine the snow-free time point by identifying the survey time points that meet the snow-free determination condition.

[0069] Among them, the snow-free determination condition is that the snow depth in the surveyed area at the survey time point is 0.

[0070] Alternatively, the snow-free determination condition is that the albedo of the ground snow cover in the surveyed area at the survey time point is less than 0.2.

[0071] S12. Determine the surveyed value of the gamma-ray count at the snow-free time point in the surveyed area as the snow-free gamma-ray count.

[0072] S20. Perform linear fitting based on each snow-free gamma-ray count to obtain the conversion relationship between the time point and the gamma radiation count.

[0073] Please refer to Figure 5 , Figure 5 , which is a snow water equivalent acquisition device provided by an embodiment of the present invention. Optionally, this snow water equivalent acquisition device is applied to the electronic device described above.

[0074] The snow water equivalent acquisition device includes: a first processing unit 1001 and a second processing unit 1002.

[0075] The first processing unit 1001 is configured to determine the theoretical value of the gamma radiation count based on the pre-constructed conversion relationship between the time point and the gamma radiation count, where the theoretical value of the gamma radiation count is the dynamic gamma radiation count without snow influence corresponding to the snow time point in the surveyed area;

[0076] The second processing unit 1002 is configured to determine the snow water equivalent at the snow time point in the surveyed area according to the surveyed value of the gamma-ray count, the theoretical value of the gamma radiation count, and the attenuation coefficient;

[0077] Wherein, the surveyed value of the gamma-ray count is the surveyed value of the gamma-ray count at the snow time point in the surveyed area, and the attenuation coefficient is the attenuation coefficient related to the water content empirically determined for the surveyed area.

[0078] Optionally, the second processing unit 1002 may execute the above S60, and the first processing unit 1001 may execute the other steps in the above method embodiments.

[0079] It should be noted that the snow water equivalent acquisition device provided in this embodiment can execute the method flow shown in the above method flow embodiment to achieve the corresponding technical effects. For the sake of brief description, for the parts not mentioned in this embodiment, reference may be made to the corresponding content in the above embodiments.

[0080] An embodiment of the present invention further provides a storage medium, which stores computer instructions and programs. When the computer instructions and programs are read and run, they execute the snow water equivalent acquisition method in the above embodiment. The storage medium may include memory, flash memory, registers, or a combination thereof, etc.

[0081] The following provides an electronic device, which can be a mobile device, a computer device, a server device, etc. The electronic device, as Figure 1 shown, can implement the above snow water equivalent acquisition method. Specifically, the electronic device includes: a processor 10, a memory 11, and a bus 12. The processor 10 can be a CPU. The memory 11 is used to store one or more programs. When the one or more programs are executed by the processor 10, the snow water equivalent acquisition method of the above embodiments is executed.

[0082] In summary, a snow water equivalent acquisition method, device, storage medium, and electronic device provided by an embodiment of the present invention determine a theoretical value of gamma radiation count based on a pre-constructed conversion relationship between time points and gamma radiation counts. The theoretical value of gamma radiation count is the dynamic gamma radiation count without snow influence corresponding to the time point with snow in the surveyed area. According to the surveyed value of gamma ray count, the theoretical value of gamma radiation count, and the attenuation coefficient, the snow water equivalent at the time point with snow in the surveyed area is determined. The surveyed value of gamma ray count is the surveyed value of gamma ray count at the time point with snow in the surveyed area, and the attenuation coefficient is an empirically determined attenuation coefficient related to water content in the surveyed area. It can avoid the need for measuring soil moisture, fundamentally solve the problem of difficult soil moisture measurement in alpine regions, incorporate the complex effects brought by the soil freezing process, automatically adapt to the dynamic changes of the soil state by dynamically tracking the changes in the theoretical value of gamma radiation count, and ensure the accuracy of the obtained snow water equivalent result.

[0083] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0084] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A method for obtaining snow water equivalent, characterized in that: The method comprises: Based on a pre-constructed time point and gamma radiation count conversion relationship, a theoretical value of gamma radiation count is determined, wherein the theoretical value of gamma radiation count is a dynamic gamma radiation count under the influence of no snow corresponding to a snowy time point in the survey area; Determine the snow water equivalent of the survey area at the snowy time point according to the gamma ray counting survey value, the gamma radiation counting theoretical value and the attenuation coefficient; The gamma-ray count survey value is the survey value of the gamma-ray count in the survey area at a time point when snow occurs, and the attenuation coefficient is an empirical attenuation coefficient related to the water content in the survey area.

2. The snow water equivalent acquisition method according to claim 1, characterized in that: The formula for the snow water equivalent is: SWE = β·ln(N / Tm); Wherein, N represents the gamma-ray counting survey value, Tm represents the gamma radiation counting theoretical value, β represents the empirical attenuation coefficient related to the water content in the survey area, and SWE represents the snow water equivalent.

3. The snow water equivalent acquisition method according to claim 2, characterized in that: The method further comprises: Obtaining the actual snow water equivalent of the survey area at M sample time points, wherein the sample time points are snowy time points; Based on the actual snow water equivalent at the sample time point, the theoretical value of gamma radiation counts corresponding to the sample time point, and the survey value of gamma ray counts corresponding to the sample time point, the empirical attenuation coefficient related to the water content of the survey area is determined.

4. The snow water equivalent acquisition method according to claim 3, characterized in that: The step of determining the attenuation coefficient of the empirical water in the survey area based on the actual snow water equivalent at the sample time point, the theoretical value of the gamma radiation count corresponding to the sample time point, and the gamma ray count survey value corresponding to the sample time point comprises: The least squares calibration is performed based on the actual snow water equivalent at the sample time point, the theoretical value of gamma radiation counts corresponding to the sample time point, and the measured value of gamma ray counts corresponding to the sample time point to obtain the attenuation coefficient of the empirical water in the survey area.

5. The snow water equivalent acquisition method according to claim 3, characterized in that: The step of obtaining the actual snow water equivalent of the survey area at M sample time points includes: Obtaining snow depth and snow density in the survey area at a sample time point; The actual snow water equivalent at the sample time point is determined based on the snow depth at the sample time point and the snow density at the sample time point.

6. The snow water equivalent acquisition method according to claim 1, characterized in that: The method further comprises: Obtaining a snow-free gamma-ray count of the survey area during a survey period, wherein the snow-free gamma-ray count is a survey value of a gamma-ray count of the survey area at a snow-free time point; Linear fitting was performed based on each snow-free gamma-ray count to obtain the conversion equation between time point and gamma radiation count.

7. The snow water equivalent acquisition method according to claim 6, characterized in that: The step of obtaining the snow-free gamma-ray count of the survey area within the survey period comprises: The survey time point that meets the snow-free judgment condition is determined as the snow-free time point; The snow-free determination condition is that the snow depth in the survey area at the survey time point is 0; The survey value of the gamma-ray count in the survey area at the snow-free time point is determined as the snow-free gamma-ray count.

8. A snow water equivalent acquisition device, characterized in that: The device comprises: A first processing unit is used to determine a theoretical value of gamma radiation counts based on a pre-constructed time point and gamma radiation count conversion relationship, wherein the theoretical value of gamma radiation counts is a dynamic gamma radiation count under the influence of no snow corresponding to a snowy time point in the survey area; A second processing unit is used to determine the snow water equivalent of the survey area at the snowy time point according to the gamma ray counting survey value, the gamma radiation counting theoretical value and the attenuation coefficient; The gamma-ray count survey value is the survey value of the gamma-ray count in the survey area at a time point when snow occurs, and the attenuation coefficient is an empirical attenuation coefficient related to the water content in the survey area.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: include: A processor and a memory, the memory being used to store one or more programs; When the one or more programs are executed by the processor, the method according to any one of claims 1 to 7 is implemented.

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