Near space visible near infrared solar spectrum irradiance measurement system
By separately installing a solar tracker and a measurement unit on a near-space flight platform, and combining absolute and relative measurement methods, the problems of low accuracy and high cost in solar radiation measurement were solved, achieving high-precision and low-cost solar spectral irradiance measurement.
Patent Information
- Application Number
- CN202511562100.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-01-13
AI Technical Summary
In existing technologies, the accuracy of near-space solar radiation measurement is low and the observation cost is high. This is mainly because the solar spectral irradiance observation payload is large in size and weight, resulting in a bulky solar tracker that is difficult to track and locate quickly and accurately.
The system adopts a split design, with the measurement unit installed separately on the solar tracker and the near-space flight platform. Combined with the data processing module, it collects absolute radiation data and relative spectral power distribution of sunlight, respectively. Absolute measurements are performed using a solar total radiation meter, a shortwave radiation meter, and a longwave radiation meter, while relative measurements are performed using a solar spectroradiometer, thereby improving measurement accuracy and reducing costs.
In an upper-altitude environment with minimal airflow interference, the feasibility of long-term observation is ensured, the accuracy of solar tracking and data acquisition is improved, the observation cost is reduced, human error is minimized, and the accuracy of solar spectral irradiance measurement is enhanced.
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Figure CN121323787A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of optical measurement technology, and in particular to a near-space visible and near-infrared solar spectral irradiance measurement system. Background Technology
[0002] Near space generally refers to the airspace 20 to 100 kilometers above the ground, where solar radiation measurements can be performed. Since the sun's angle in the sky changes in real time, current technology uses a solar tracker to locate the sun and simultaneously mounts a solar spectral irradiance observation payload on the solar tracker for observation.
[0003] However, since near-space flight platforms cannot remain absolutely stationary (e.g., they may drift or vibrate due to airflow), and the solar spectral irradiance observation payload is large in size and weight, the installed solar tracker is quite bulky, making it difficult to quickly and accurately track and locate the sun. This not only results in lower accuracy of solar spectral irradiance measurements, but the large size of the observation equipment also increases launch costs, leading to higher observation costs. Summary of the Invention
[0004] This invention provides a near-space visible and near-infrared solar spectral irradiance measurement system to solve the technical problems of low accuracy and high observation cost in existing solar radiation measurements.
[0005] This invention provides a near-space visible and near-infrared solar spectral irradiance measurement system, comprising a near-space flight platform, a solar tracker, a first measurement unit, a second measurement unit, and a data processing module; The solar tracker is mounted on the near-space flight platform. The solar tracker is used to track the position of the sun, and the near-space flight platform is used to carry the solar tracker. The first measuring unit is installed on the solar tracker and is used to collect absolute radiation data of sunlight. The second measurement unit is installed on the near-space flight platform and is used to collect the relative spectral power distribution of sunlight in the target wavelength range; The data processing module is communicatively connected to the first measurement unit and the second measurement unit, respectively. The data processing module is used to determine the solar spectral irradiance based on the absolute radiation data and the relative spectral power distribution.
[0006] According to the present invention, a near-space visible and near-infrared solar spectral irradiance measurement system is provided, wherein the first measurement unit is specifically used for: Measure the full spectrum of solar radiation illuminance using a total solar radiation meter; The solar irradiance within the first wavelength range is measured using a solar shortwave radiometer. The second solar radiation illuminance in the second wavelength range was measured using a solar longwave radiometer. The full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance are used as the absolute radiation data.
[0007] According to the present invention, a near-space visible and near-infrared solar spectral irradiance measurement system is provided, wherein the solar shortwave radiation meter is composed of the solar radiation master meter and a shortwave pass filter; The solar long-wave radiation meter is composed of the solar radiation master meter and a long-wave pass filter.
[0008] According to the present invention, a near-space visible and near-infrared solar spectral irradiance measurement system is provided, wherein the second measurement unit is a solar spectroradiometer; The light radiation receiver of the solar spectroradiometer is a cosine diffuser.
[0009] According to the present invention, a near-space visible and near-infrared solar spectral irradiance measurement system is provided, wherein the data processing module is specifically used for: Based on the full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance, the target solar irradiance within the target wavelength range is determined; Based on the target solar irradiance and the relative spectral power distribution, the calibration coefficients of the solar spectroradiometer are determined; Based on the relative spectral power distribution and the calibration coefficient, the solar spectral irradiance within the target wavelength range is determined.
[0010] According to the present invention, a near-space visible and near-infrared solar spectral irradiance measurement system is provided, wherein the near-space flight platform is a high-altitude balloon or an airship.
[0011] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the near-space visible and near-infrared solar spectral irradiance measurement method as described above.
[0012] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the near-space visible and near-infrared solar spectral irradiance measurement method as described above.
[0013] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the near-space visible and near-infrared solar spectral irradiance measurement method as described above.
[0014] The near-space visible and near-infrared solar spectral irradiance measurement system provided by this invention utilizes a near-space flight platform to carry a solar tracker, providing a stable high-altitude environment to minimize airflow interference and ensure the feasibility of long-term observation. The solar tracker tracks the sun's position, ensuring the first measurement unit is always directly facing the sun, overcoming drift and vibration of the near-space platform and improving solar tracking accuracy. By mounting the first measurement unit on the solar tracker to collect absolute solar radiation data, data acquisition accuracy is improved. By mounting a second measurement unit on the near-space flight platform to collect the relative spectral power distribution of sunlight within the target wavelength range, the transmission payload of the solar tracker is reduced, lowering observation costs. The data processing module determines solar spectral irradiance based on absolute radiation data and relative spectral power distribution, thereby automatically calculating solar spectral irradiance by integrating absolute radiation data and relative spectral power distribution, reducing human error and improving the accuracy of solar spectral irradiance measurement. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the near-space visible and near-infrared solar spectral irradiance measurement system provided by the present invention.
[0017] Figure 2 This is a schematic diagram of the structure of the first measurement unit provided by the present invention for data acquisition.
[0018] Figure 3 This is a schematic diagram of solar spectral irradiance calibration provided by the present invention.
[0019] Figure 4 This is a flowchart illustrating the near-space visible and near-infrared solar spectral irradiance measurement method provided by the present invention.
[0020] Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0022] Traditional methods involve directly measuring solar spectral irradiance using solar spectroradiometers, such as on the Earth's surface and on satellite platforms. However, at near-space altitudes, these measurements are affected by air currents, leading to inaccuracies.
[0023] To improve the accuracy of solar radiation measurements, current technology employs a solar tracker to locate the sun and simultaneously mounts a solar spectral irradiance observation payload on it. However, due to the large size and weight of the solar spectral irradiance observation payload, the installed solar tracker is quite bulky, making it difficult to quickly and accurately track and locate the sun. This reduces the accuracy of solar spectral irradiance measurements and increases the payload of the near-space flight platform, raising launch costs.
[0024] To address this, the present invention proposes a near-space visible and near-infrared solar spectral irradiance measurement system. This system employs absolute measurements from a total solar radiation meter, a short-wave solar radiation meter, and a long-wave solar radiation meter, combined with relative measurements from a solar spectroradiometer, thereby improving the accuracy of solar spectral irradiance measurement while reducing measurement costs.
[0025] The following is combined Figure 1 to Figure 5 This invention describes a near-space visible and near-infrared solar spectral irradiance measurement system.
[0026] Figure 1 This is a schematic diagram of the near-space visible and near-infrared solar spectral irradiance measurement system provided by the present invention, as shown below. Figure 1 As shown, the system includes at least: a near-space flight platform, a solar tracker, a first measurement unit, a second measurement unit, and a data processing module; The solar tracker is mounted on the near-space flight platform. The solar tracker is used to track the position of the sun, and the near-space flight platform is used to carry the solar tracker. The first measuring unit is installed on the solar tracker and is used to collect absolute radiation data of sunlight. The second measurement unit is installed on the near-space flight platform and is used to collect the relative spectral power distribution of sunlight in the target wavelength range; The data processing module is communicatively connected to the first measurement unit and the second measurement unit, respectively. The data processing module is used to determine the solar spectral irradiance based on the absolute radiation data and the relative spectral power distribution.
[0027] Specifically, near-space (e.g., at an altitude of 30-35 km) has a low atmospheric absorptivity (<1%), making it an ideal environment for verifying satellite data. However, near-space flight platforms (such as high-altitude balloons or airships) are susceptible to airflow drift and vibration, leading to decreased solar tracking accuracy and consequently, lower accuracy in solar radiation measurements. This invention, through a split design, separates the first and second measurement units and combines them with a data processing module to improve the accuracy of solar radiation measurements.
[0028] The solar tracker is installed on a near-space flight platform. The solar tracker is used to track the sun's position in real time, and the near-space flight platform is used to carry the solar tracker.
[0029] Furthermore, the near-space flight platform is a high-altitude balloon or airship.
[0030] Specifically, near-space flight platforms can be high-altitude balloons or airships, which can provide a stable high-altitude environment to minimize airflow interference and ensure the feasibility of long-term observation.
[0031] The first measurement unit is installed on the solar tracker to collect absolute radiation data of sunlight. This allows for real-time adjustments based on the sun's position tracked by the solar tracker, ensuring that the first measurement unit is always facing the sun and improving the accuracy of absolute radiation data collection.
[0032] The second measurement unit is directly installed on the near-space flight platform to collect the relative spectral power distribution of sunlight in the target wavelength range, thereby reducing the load requirements on the solar tracker. This not only reduces launch costs but also enables the solar tracker to make azimuth adjustments more quickly under lower load conditions, further improving data acquisition accuracy.
[0033] The data processing module is communicatively connected to the first measurement unit and the second measurement unit, respectively, and is used to determine the solar spectral irradiance based on absolute radiation data and relative spectral power distribution, thereby improving the accuracy of solar spectral irradiance calculation.
[0034] The near-space visible and near-infrared solar spectral irradiance measurement system provided by this invention utilizes a near-space flight platform to carry a solar tracker, providing a stable high-altitude environment to minimize airflow interference and ensure the feasibility of long-term observation. The solar tracker tracks the sun's position, ensuring the first measurement unit is always directly facing the sun, overcoming drift and vibration of the near-space platform and improving solar tracking accuracy. By mounting the first measurement unit on the solar tracker to collect absolute solar radiation data, data acquisition accuracy is improved. By mounting a second measurement unit on the near-space flight platform to collect the relative spectral power distribution of sunlight within the target wavelength range, the transmission payload of the solar tracker is reduced, lowering observation costs. The data processing module determines solar spectral irradiance based on absolute radiation data and relative spectral power distribution, thereby automatically calculating solar spectral irradiance by integrating absolute radiation data and relative spectral power distribution, reducing human error and improving the accuracy of solar spectral irradiance measurement.
[0035] Furthermore, the first measurement unit is specifically used for: Measure the full spectrum of solar radiation illuminance using a total solar radiation meter; The solar irradiance within the first wavelength range is measured using a solar shortwave radiometer. The second solar radiation illuminance in the second wavelength range was measured using a solar longwave radiometer. The full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance are used as the absolute radiation data.
[0036] Specifically, the first measurement unit includes at least a total solar radiation meter, a shortwave solar radiation meter, and a longwave solar radiation meter. When the near-space flight platform is flying at high altitude, the total solar radiation meter, the shortwave solar radiation meter, and the longwave solar radiation meter are all mounted on a solar tracker, which is then installed on the near-space flight platform.
[0037] The solar tracker can track the sun's position, ensuring that the solar total radiation meter, solar shortwave radiation meter, and solar longwave radiation meter are always facing the sun.
[0038] Furthermore, the solar shortwave radiation meter is composed of the solar radiation master meter connected to the shortwave pass filter; The solar long-wave radiation meter is composed of the solar radiation master meter and a long-wave pass filter.
[0039] Specifically, Figure 2 This is a schematic diagram of the data acquisition structure of the first measurement unit provided by the present invention, as shown below. Figure 2 As shown, the total solar radiation meter measures the entire spectrum ( l i ~ lf Solar radiation illuminance, the solar shortwave radiometer is composed of a total solar radiation meter combined with a shortwave pass filter, and measures the illuminance within the first wavelength range ( l i ~ l 1) The first solar irradiance (less than a specific wavelength); the solar long-wave radiometer, composed of a total solar radiation meter and a long-pass filter, measures the second wavelength range ( l 2~ l f The second solar irradiance (greater than a specific wavelength) is used to obtain absolute radiation data, expressed as follows: In the formula, E ( l () is the wavelength of sunlight. l Spectral irradiance, R ( l ) refers to solar observation instruments (i.e., solar total radiation meters, solar shortwave radiation meters, or solar longwave radiation meters) at wavelengths l absorption rate, T 1( l )and T 2( l These are short-pass and long-pass filters, respectively, at wavelengths of [wavelength range missing]. l transmittance, S It is the total solar radiation receiving area. P 0 represents the optical power measured by the total solar radiation meter. P 1 represents the optical power measured by the solar shortwave radiometer. P 2 represents the optical power measured by the solar longwave radiation meter.
[0040] Before the near-space flight platform takes off, the optical power and area of three instruments—the total solar radiation meter, the shortwave solar radiation meter, and the longwave solar radiation meter—can be measured in the laboratory according to the near-space environment. S Measurements are taken to ensure the accuracy of measurements from the three instruments.
[0041] In existing technical specifications, the absorptivity of the total solar radiation meter... R ( l The value is approximately 1 across the entire spectrum. Because... S It is independent of wavelength, therefore, P 0 and S The ratio of is the measured full-spectrum solar irradiance; P 1 and S The ratio of is the measured first solar irradiance; P 2 andS The ratio of is the measured second solar radiation illuminance.
[0042] Furthermore, the second measuring unit is a solar spectroradiometer; The light radiation receiver of the solar spectroradiometer is a cosine diffuser.
[0043] Specifically, since the solar spectroradiometer does not involve solar tracking, the embodiments of the present invention use irradiance mode measurement, that is, its light radiation receiver is a cosine diffuser.
[0044] As the solar altitude angle changes, the solar spectroradiometer receives the following light radiation: E ( l , i ).in, l The wavelength of sunlight. i It is the angle between the sunlight and the direction of the cosine diffuser normal. Ideally, the light radiation is: E ( l , i )= E ( l , 0 )×cos(θ) The variation of the solar spectroradiometer measurement signal under different solar altitude angles exhibits a cosine characteristic.
[0045] For example, when the angle between sunlight and the cosine diffuser is... i At 0:00, the wavelength of sunlight was measured using a solar spectroradiometer. l 1 to l After emitting light in band 2, the relative spectral power distribution of that band can be calculated using the following formula. : In the formula, At an angle of i 0 and wavelength is Under these conditions, the maximum value of light radiation measured by the solar spectroradiometer; At an angle of 0 and a wavelength of Under these conditions, the solar spectroradiometer measures the light radiation; At an angle of 0 and a wavelength of Under these conditions, the solar spectroradiometer measures the light radiation.
[0046] Since the measurements from a solar spectroradiometer are only related to the angle and not to the wavelength, the relative spectral power distribution measured by a solar spectroradiometer is independent of the angle and only related to the solar spectral irradiance in that wavelength band.
[0047] In some embodiments, i It can also be limited to less than or equal to 60° or smaller, thereby ensuring that the measurement of the solar spectroradiometer follows the cosine response, thus compensating for the angle change through the cosine response, reducing the requirements for the solar tracker, and further improving the measurement accuracy.
[0048] Based on the above embodiments, since the total mass of the solar radiation meter, the solar shortwave radiation meter, and the solar longwave radiation meter is usually less than or equal to 3 kg, which is relatively light, while the mass of the solar spectroradiometer is usually greater than 10 kg (some solar spectroradiometers that meet high precision requirements even reach 50 kg), which is relatively large in both mass and volume, the embodiments of the present invention reduce the load requirements on the solar tracker by installing the first measuring unit on the solar tracker and directly installing the second measuring unit on the near-space flight platform. This avoids the problem of slow adjustment speed during the tracking of the sun's azimuth due to excessive weight and volume, improves tracking accuracy, and also reduces launch costs.
[0049] Furthermore, the data processing module is specifically used for: Based on the full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance, the target solar irradiance within the target wavelength range is determined; Based on the target solar irradiance and the relative spectral power distribution, the calibration coefficients of the solar spectroradiometer are determined; Based on the relative spectral power distribution and the calibration coefficient, the solar spectral irradiance within the target wavelength range is determined.
[0050] Specifically, in the first measurement unit, for ideal short-pass and long-pass filters, the following formulas are satisfied: In the formula, C 1 and C 2 is a constant (obtainable through laboratory measurement). C 1 and C (The specific value of 2).
[0051] Figure 3 This is a schematic diagram of solar spectral irradiance calibration provided by the present invention, as shown below. Figure 3 As shown, by subtracting the solar irradiance in the short-wavelength and long-wavelength bands (i.e., the first solar irradiance and the second solar irradiance), we can obtain the solar irradiance at wavelengths of... l 1 to l Solar irradiance in band 2 (i.e., within the target wavelength range), which is the integrated irradiance in that band. l 1 to l Target solar irradiance in band 2 The calculation formula is as follows: The solar spectroradiometer collected solar light wavelengths ranging from... l 1 to l Relative spectral power distribution in two bands Afterwards, combined l 1 to l From the target solar irradiance in band 2, the calibration coefficient of the solar spectroradiometer can be calculated: In the formula, It is the scaling factor.
[0052] Based on the relative spectral power distribution and calibration coefficients, it is possible to calculate l 1 to l Solar spectral irradiance in band 2.
[0053] In some embodiments, for commonly used bands in remote sensing, the following can be used: l 1 and l 2 are designed to be 380nm and 2500nm respectively.
[0054] For example, if a near-space flight platform flies at an altitude of 35 km, the solar spectral irradiance at that altitude (380 nm - 2500 nm) can be measured. Combined with an atmospheric transport model, the solar spectral irradiance in space (380 nm - 2500 nm) can be calculated and compared with satellite data for verification.
[0055] Based on any of the above embodiments, the embodiments of the present invention employ absolute measurements from a total solar radiation meter, a shortwave solar radiation meter, and a longwave solar radiation meter, combined with relative measurements from a solar spectroradiometer. This minimizes the influence of airflow at near-space altitudes, reduces the load requirements of the solar tracker, improves the real-time performance and accuracy of tracking, and thereby enhances the accuracy of solar spectral irradiance measurements.
[0056] The present invention provides a method for measuring near-space visible and near-infrared solar spectral irradiance. The method described below can be referred to in correspondence with the near-space visible and near-infrared solar spectral irradiance measurement system described above.
[0057] Figure 4This is a flowchart illustrating the near-space visible and near-infrared solar spectral irradiance measurement method provided by the present invention, as shown below. Figure 4 As shown. This invention provides a method for measuring near-space visible and near-infrared solar spectral irradiance, comprising the following steps: Step 401: Collect absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range; Step 402: Determine the solar spectral irradiance based on the absolute radiation data and the relative spectral power distribution.
[0058] The near-space visible and near-infrared solar spectral irradiance measurement method provided by this invention acquires absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range, providing reliable data for subsequent solar spectral irradiance measurement. By determining solar spectral irradiance based on absolute radiation data and relative spectral power distribution, and by integrating absolute radiation data and relative spectral power distribution, solar spectral irradiance is automatically calculated, reducing human error and improving the accuracy of solar spectral irradiance measurement.
[0059] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other via the communication bus 540. The processor 510 can call logical instructions in the memory 530 to execute a near-space visible and near-infrared solar spectral irradiance measurement method, which includes: Collect absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range; Based on the absolute radiation data and the relative spectral power distribution, the solar spectral irradiance is determined.
[0060] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0061] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program that can be stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the near-space visible and near-infrared solar spectral irradiance measurement method provided by the above methods, the method comprising: Collect absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range; Based on the absolute radiation data and the relative spectral power distribution, the solar spectral irradiance is determined.
[0062] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the near-space visible and near-infrared solar spectral irradiance measurement method provided by the methods described above, the method comprising: Collect absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range; Based on the absolute radiation data and the relative spectral power distribution, the solar spectral irradiance is determined.
[0063] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0064] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
[0065] It should be noted that, in this document, 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 limitations, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0066] In this application's embodiments, "determine B based on A" means that factor A must be considered when determining B. It is not limited to "B can be determined based solely on A," but should also include: "determine B based on A and C," "determine B based on A, C, and E," "determine C based on A, and further determine B based on C," etc. Additionally, it can include using A as a condition for determining B, for example, "when A meets the first condition, determine B using the first method"; another example, "when A meets the second condition, determine B," etc.; another example, "when A meets the third condition, determine B based on the first parameter," etc. Of course, it can also be a condition where A is a factor in determining B, for example, "when A meets the first condition, determine C using the first method, and further determine B based on C," etc.
[0067] It should also be noted that the terms "target," "first," and "second" in this application are used to distinguish similar objects, and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited; for example, the first object can be one or more.
[0068] In this invention, the term "multiple" refers to two or more, and other quantifiers are similar.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A near-space visible and near-infrared solar spectral irradiance measurement system, characterized in that, It includes a near-space flight platform, a solar tracker, a first measurement unit, a second measurement unit, and a data processing module; The solar tracker is mounted on the near-space flight platform. The solar tracker is used to track the position of the sun, and the near-space flight platform is used to carry the solar tracker. The first measuring unit is installed on the solar tracker and is used to collect absolute radiation data of sunlight. The second measurement unit is installed on the near-space flight platform and is used to collect the relative spectral power distribution of sunlight in the target wavelength range; The data processing module is communicatively connected to the first measurement unit and the second measurement unit, respectively. The data processing module is used to determine the solar spectral irradiance based on the absolute radiation data and the relative spectral power distribution.
2. The near-space visible and near-infrared solar spectral irradiance measurement system according to claim 1, characterized in that, The first measurement unit is specifically used for: Measure the full spectrum of solar radiation illuminance using a total solar radiation meter; The solar irradiance within the first wavelength range is measured using a solar shortwave radiometer. The second solar radiation illuminance in the second wavelength range was measured using a solar longwave radiometer. The full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance are used as the absolute radiation data.
3. The near-space visible and near-infrared solar spectral irradiance measurement system according to claim 2, characterized in that, The solar shortwave radiation meter is composed of the solar radiation master meter and the shortwave pass filter; The solar long-wave radiation meter is composed of the solar radiation master meter and a long-wave pass filter.
4. The near-space visible and near-infrared solar spectral irradiance measurement system according to claim 2, characterized in that, The second measuring unit is a solar spectroradiometer; The light radiation receiver of the solar spectroradiometer is a cosine diffuser.
5. The near-space visible and near-infrared solar spectral irradiance measurement system according to claim 4, characterized in that, The data processing module is specifically used for: Based on the full-spectrum solar irradiance, the first solar irradiance, and the second solar irradiance, the target solar irradiance within the target wavelength range is determined; Based on the target solar irradiance and the relative spectral power distribution, the calibration coefficients of the solar spectroradiometer are determined; Based on the relative spectral power distribution and the calibration coefficient, the solar spectral irradiance within the target wavelength range is determined.
6. The near-space visible and near-infrared solar spectral irradiance measurement system according to claim 1, characterized in that, The near-space flight platform is a high-altitude balloon or airship.
7. A method for measuring near-space visible and near-infrared solar spectral irradiance, characterized in that, include: Collect absolute radiation data of sunlight and the relative spectral power distribution of sunlight within the target wavelength range; Based on the absolute radiation data and the relative spectral power distribution, the solar spectral irradiance is determined.
8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the near-space visible and near-infrared solar spectral irradiance measurement method as described in claim 7.
9. A non-transitory 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 near-space visible and near-infrared solar spectral irradiance measurement method as described in claim 7.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the near-space visible and near-infrared solar spectral irradiance measurement method as described in claim 7.