CN115189762B - Method and device for detecting communication availability of satellite-to-ground laser communication ground station - Google Patents
Method and device for detecting communication availability of satellite-to-ground laser communication ground station Download PDFInfo
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- CN115189762B CN115189762B CN202210817960.1A CN202210817960A CN115189762B CN 115189762 B CN115189762 B CN 115189762B CN 202210817960 A CN202210817960 A CN 202210817960A CN 115189762 B CN115189762 B CN 115189762B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The disclosure provides a method and a device for detecting communication availability of a satellite-to-ground laser communication ground station, and relates to the technical field of remote sensing satellite data reception, wherein the method comprises the following steps: acquiring meteorological information, atmospheric turbulence information and cloud cover information of a satellite-to-ground laser communication ground station; calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment and the loss on the link of the satellite and the satellite-ground laser communication ground station; and acquiring corresponding weather information and/or atmospheric turbulence information and/or cloud cover information and/or loss based on the corresponding angle and position relation at each moment, and determining the availability of a satellite and ground station communication link corresponding to the angle and position relation. The method and the device solve the problem that the prior art lacks the capability of quantitatively analyzing the communication availability of the satellite-ground laser communication ground station.
Description
Technical Field
The disclosure relates to the technical field of remote sensing satellite data reception, in particular to a method and a device for detecting communication availability of a satellite-ground laser communication ground station.
Background
With the rapid development of remote sensing technology, the satellite load quantity and the load resolution are greatly improved, and the generated data quantity is increased in geometric level, so that the demand for high-speed satellite-ground data transmission is increasingly urgent. The available bandwidth of satellite-to-ground laser communication can reach THz magnitude, and the communication rate can reach hundred Gbps magnitude, so that the satellite-to-ground laser communication system is an important mode for satellite-to-ground high-speed data transmission in the future. However, satellite-to-ground laser communication is limited by the atmospheric environment, including: the attenuation of laser energy by fog, rain, snow, cloud and other weather conditions in the troposphere causes the interruption of the optical communication link; the real-time dynamic change of the non-uniform atmosphere in the near-ground area causes atmospheric turbulence, which is manifested by light field spatial coherence degradation, light beam drift fluctuation, arrival angle fluctuation and light intensity flickering, and leads to the quality degradation of signal light at a receiving end. Therefore, the communication availability of the satellite-to-ground laser communication ground station needs to be detected so as to reasonably arrange satellite-to-ground laser communication service.
At present, the analysis method for the communication availability of the satellite-to-ground laser communication ground station mainly utilizes historical meteorological data and short-term turbulence measurement data to count seasonal and macroscopic rules of sunny days and atmospheric turbulence intensity, and qualitatively analyzes the communication conditions of the satellite-to-ground laser communication station address, and has the following two problems: first, the factors influencing the communication availability of the satellite-to-ground laser communication ground station are more, and only weather data and short-term turbulence measurement data cannot accurately reflect the availability of the satellite-to-ground laser communication station. Secondly, the existing method only can evaluate whether the station address is suitable for building the satellite-to-ground laser communication ground station, lacks the capability of quantitatively analyzing the communication availability of the satellite-to-ground laser communication ground station, and cannot judge whether the current satellite-to-ground laser communication ground station has the communication capability in actual service operation.
Disclosure of Invention
In view of the foregoing technical problem, a first aspect of the present disclosure provides a method for detecting communication availability of a satellite-to-ground laser communication ground station, including: acquiring meteorological information, atmospheric turbulence information and cloud cover information of a satellite-to-ground laser communication ground station; calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment and the loss on the link of the satellite and the satellite-ground laser communication ground station; and acquiring corresponding weather information and/or atmospheric turbulence information and/or cloud cover information and/or loss based on the corresponding angle and position relation at each moment, and determining the availability of a satellite and ground station communication link corresponding to the angle and position relation.
According to an embodiment of the present disclosure, acquiring weather information of a satellite-to-ground laser communication ground station specifically includes: measuring ground weather information, wherein the ground weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction of a satellite-to-ground laser communication ground station; and calculating space weather information, wherein the space weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction at different elevations.
According to an embodiment of the present disclosure, acquiring atmospheric turbulence information of a satellite-to-ground laser communication ground station specifically includes: measuring the first atmosphere dry length of the star at the first day vertex angle; and calculating the second atmospheric coherence length of the satellite-to-ground laser communication ground station at the second zenith angle according to the first zenith angle and the first atmospheric coherence length, and using the second atmospheric coherence length as the atmospheric turbulence information of the satellite-to-ground laser communication ground station.
According to an embodiment of the disclosure, a second atmospheric coherence length of a satellite-to-ground laser communication ground station at a second zenith angle is calculated according to the first zenith angle and the first atmospheric coherence length, and specifically includes: according to
r′ 0 ＝r 0 .(cosθ) -3/5 ·(cosα) -3/5 Calculate the firstLength of two atmosphere dry r' 0 Wherein r is 0 For the first atmosphere dry length, θ is the first zenith angle and α is the second zenith angle.
According to an embodiment of the present disclosure, acquiring cloud cover information of a satellite-to-ground laser communication ground station specifically includes: collecting a first all-sky image of a visible light wave band and a second all-sky image of an infrared wave band; cloud cover information is extracted from the first all-sky image and the second all-sky image.
According to the embodiment of the disclosure, calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment specifically comprises: calculating coordinates of satellites at all times in the field angle range of the satellite-to-ground laser communication ground station; and calculating the distance, azimuth angle and pitch angle of the satellite relative to the satellite-ground laser communication ground station at each moment as the angle and the position relation according to the coordinates of each moment and the position information of the satellite on the satellite-ground laser communication ground.
According to an embodiment of the present disclosure, based on an angle and a position relationship corresponding to each time, acquiring corresponding weather information and/or atmospheric turbulence information and/or cloud cover information and/or loss to determine availability of a satellite and ground station communication link corresponding to the angle and position relationship, specifically includes: judging whether the temperature is within the working temperature range of the satellite-ground laser communication ground station, if so, determining that a communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the wind speed and the wind direction are within the wind load capacity range of the satellite-ground laser communication ground station, if so, determining that the communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the satellite-ground laser communication ground station has rainfall according to the relative humidity, if not, determining that the satellite-ground station communication link is available, and if so, determining that the satellite-ground station communication link is unavailable; and/or judging whether the atmospheric turbulence of the satellite-ground communication link exceeds the correction capability of the ground station according to the atmospheric turbulence information, if so, determining that the satellite-ground communication link is available, and if not, determining that the satellite-ground communication link is unavailable; and/or calculating the allowance of the communication link between the satellite and the ground station according to the cloud amount information and the loss, if the allowance is larger than zero, determining that the communication link between the satellite and the ground station is available, otherwise, determining that the communication link between the satellite and the ground station is available.
According to an embodiment of the disclosure, weather information, atmospheric turbulence information and cloud cover information of a satellite-to-ground laser communication ground station are acquired based on a plug-in dynamic link library.
According to an embodiment of the present disclosure, the field of view of the first all-sky image and the second all-sky image is twice or more as large as the second zenith angle range of the satellite-to-ground laser communication ground station, and the resolution is three times or more as large as the corresponding angular resolution of the second zenith angle of the satellite-to-ground laser communication ground station.
A second aspect of the present disclosure provides a device for detecting communication availability of a satellite-to-ground laser communication ground station, including: the information acquisition module is used for acquiring meteorological information, atmospheric turbulence information and cloud cover information of the satellite-to-ground laser communication ground station; the information acquisition module is constructed by adopting a dynamic link library based on plug-in; the calculation module is used for calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment and the loss on the link of the satellite and the satellite-ground laser communication ground station; the availability analysis module is used for acquiring corresponding weather information and/or atmospheric turbulence information and/or cloud cover information and/or loss based on the corresponding angle and position relation at each moment and determining the availability of the satellite and ground station communication link corresponding to the angle and position relation.
According to the detection method and the detection device for the communication availability of the satellite-to-ground laser communication ground station, the following technical effects can be achieved:
the method comprises the steps of acquiring ground meteorological data in real time, and calculating space layered meteorological data in real time; calculating the atmospheric turbulence information of the full airspace by measuring the point information of the atmospheric turbulence; by combining the infrared band all-sky image and the visible light all-sky image, cloud quantity distribution information of the all-airspace is calculated, real-time, high-precision and high-resolution environmental data can be provided for quantitative analysis of the availability of the satellite-to-ground laser communication ground station, and the problem that the existing method lacks a data source and only can utilize large-scale and discrete data for qualitative statistical analysis is solved.
Further, weather information, atmosphere turbulence information and cloud amount information of the satellite-to-ground laser communication ground station are acquired by adopting a dynamic link library based on plug-in, so that the types of acquired information can be dynamically expanded, environmental information sources can be rapidly expanded, and the accuracy of quantitative analysis is further improved.
Furthermore, the availability of the communication link between the satellite and the ground station is determined by multiple factors, so that the accuracy of quantitative analysis of the availability of the ground station for satellite-to-ground laser communication is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments thereof with reference to the accompanying drawings in which:
fig. 1 schematically illustrates a flow chart of a method of detecting availability of satellite-to-ground laser communication ground station communication according to an embodiment of the disclosure.
Fig. 2 schematically illustrates a block diagram of a detection apparatus for satellite-to-ground laser communication ground station communication availability according to an embodiment of the disclosure.
Fig. 3 schematically shows a block diagram of an electronic device adapted to implement the method described above, according to an embodiment of the invention.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
In the description of the present disclosure, it should be understood that the terms "longitudinal," "length," "circumferential," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and do not indicate or imply that the subsystem or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.
Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may obscure the understanding of this disclosure. And the shape, size and position relation of each component in the figure do not reflect the actual size, proportion and actual position relation. In addition, in the present disclosure, any reference signs placed between parentheses shall not be construed as limiting the disclosure.
Similarly, in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. The description of the reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.
Aiming at the problem that the communication availability of the satellite-to-ground laser communication ground station cannot be quantitatively analyzed in the prior art, the embodiment of the disclosure provides a detection method and device for the communication availability of the satellite-to-ground laser communication ground station. The following describes in detail specific embodiments.
Fig. 1 schematically illustrates a flow chart of a method of detecting availability of satellite-to-ground laser communication ground station communication according to an embodiment of the disclosure.
As shown in fig. 1, the method for detecting the communication availability of the satellite-to-ground laser communication ground station may include, for example, operations S101 to S103.
In operation S101, weather information, atmospheric turbulence information, and cloud cover information of a satellite-to-ground laser communication ground station are acquired.
In one embodiment of the present disclosure, acquiring weather information of a satellite-to-ground laser communication ground station may include: ground weather information is measured, wherein the ground weather information may include, for example, at least one of a temperature, a relative humidity, an air pressure, a wind speed, and a wind direction of a satellite-to-ground laser communication ground station. The spatial weather information is calculated, wherein the spatial weather information may include, for example, at least one of temperature, relative humidity, barometric pressure, wind speed, wind direction at different elevations. And taking the ground weather information and the space weather information as final weather information of the satellite-ground laser communication ground station.
For example, a near-ground meteorological information measurement module may be deployed outdoors, where the near-ground meteorological information measurement module may be configured by, for example, a humidity sensor, an air pressure sensor, an ultrasonic probe array, and other sensors, where near-ground meteorological element data collected by each sensor is collected by a collection card to obtain ground meteorological information, and then output by a gigabit network.
The space weather information calculation module can be deployed indoors, and a numerical weather forecast model is used for calculating layered space weather information with specified time and space resolution, for example, the space weather information with the required horizontal resolution and the vertical resolution of the satellite-to-ground laser communication ground station of 10km and the time resolution of 30s such as temperature, relative humidity, air pressure, wind speed, wind direction and the like.
In an embodiment of the present disclosure, acquiring atmospheric turbulence information of a satellite-to-ground laser communication ground station may include, for example: the first atmosphere coherence length of the star at the first zenith angle was measured. And calculating the second atmospheric coherence length of the satellite-to-ground laser communication ground station at the second zenith angle according to the first zenith angle and the first atmospheric coherence length, and using the second atmospheric coherence length as the atmospheric turbulence information of the satellite-to-ground laser communication ground station. The second zenith angle of each size can be calculated to obtain the corresponding second atmospheric coherence length, so that the second atmospheric coherence length of the second zenith angle of any angle is calculated based on the first atmospheric coherence length corresponding to the first zenith angle of a certain angle, and further the atmospheric turbulence information of the full airspace is obtained. Wherein a differential image motion monitor may be employed to measure the first atmospheric coherence length of the zenith angle at which the sidereal is located by tracking sidereal imaging.
In an embodiment of the present disclosure, it may be according to
r′ 0 ＝r 0 ·(cosθ) -3/5 ·(cosα) -3/5
Calculating the second atmosphere coherence length r' 0 Wherein r is 0 For the first atmosphere dry length, θ is the first zenith angle and α is the second zenith angle. Wherein, in order to ensure that the spatial resolution of the acquired atmospheric turbulence data and the acquired meteorological information are consistent, all the atmospheric turbulence data with the spatial resolution of 1 DEG can be calculated within the range of 0 DEG to 70 DEG of zenith angleThe second atmosphere of angles is the dry length.
In an embodiment of the present disclosure, acquiring cloud information of a satellite-to-ground laser communication ground station may include, for example: and acquiring a first all-sky image of a visible light wave band and a second all-sky image of an infrared wave band, and extracting cloud amount information from the first all-sky image and the second all-sky image.
For example, during the daytime, a visible light camera may be used to collect an all-sky image of a visible light band as a first all-sky image, and during the night, an infrared camera may be used to collect an all-sky image of an infrared band as a second all-sky image, and then cloud information is extracted from the first all-sky image and the second all-sky image to generate a cloud amount distribution profile. Generating the cloud amount distribution profile may include, for example: based on the acquired all-sky cloud amount information, the cloud amount distribution is analyzed in a multi-valued mode, the cloud amount in the view angle is generated through statistics according to a customizable cloud amount judgment standard, and then a cloud amount distribution profile is generated.
In an embodiment of the present disclosure, when the cloud amount information is collected, the detection range, time and spatial resolution of the cloud amount information and the weather information are the same, so as to ensure the consistency of data, therefore, the view angles and the resolutions of the visible light camera and the infrared camera can meet the following requirements:
the field of view of acquiring the first all-sky image and the second all-sky image may be twice or more than the second zenith angle range of the satellite-to-ground laser communication ground station. For example, the zenith angle for atmospheric turbulence data acquisition may range from 0 ° -70 °, and the field angle may be selected to be 140 °.
The resolution is three times or more than the resolution of the angle corresponding to the second zenith angle of the satellite-to-ground laser communication ground station. Typically the resolution is greater than 420 x 420.
In operation S102, the angle and positional relationship of the satellite with respect to the satellite-to-earth laser communication ground station and the loss on the link of the satellite with the satellite-to-earth laser communication ground station at each time are calculated.
In an embodiment of the present disclosure, calculating the angle and the positional relationship of the satellites at each time with respect to the satellite-to-ground laser communication ground station may include, for example: and calculating the coordinates of the satellites at all times in the field angle range of the satellite-to-ground laser communication ground station. And calculating the distance, azimuth angle and pitch angle of the satellite relative to the satellite-ground laser communication ground station at each moment according to the coordinates of each moment and the position information of the satellite on the satellite-ground laser communication ground, and taking the distance, azimuth angle and pitch angle as the angle and the position relation.
For example, calculating coordinates of the satellite at each moment in the field angle range of the satellite-to-earth laser communication ground station may include, for example: and (3) reading two lines of roots or instantaneous roots of the satellite, and calculating (x, y, z) coordinates of the satellite in a WGS84 coordinate system at each moment in the field angle range of the ground station by using an SGP4 and other orbit calculation modules.
Calculating the loss on the link of the satellite and the satellite-to-ground laser communication ground station may include, for example: and respectively calculating the air attenuation, rain attenuation and other space path loss of the laser signal at each moment.
In operation S103, based on the angle and the position relationship corresponding to each time, the availability of the satellite and the ground station communication link corresponding to the angle and the position relationship is determined by acquiring the corresponding weather information and/or the atmospheric turbulence information and/or the cloud cover information and/or the loss.
In an embodiment of the present disclosure, the availability determination refers to determining whether each moment has satellite-to-ground laser communication conditions according to environmental information such as satellite transmitting power, ground station receiving gain, space path loss, wind speed, wind direction, relative humidity, and the like, and atmospheric turbulence intensity on a path, and may include: judging whether the temperature is within the working temperature range of the satellite-ground laser communication ground station, if so, determining that a communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the wind speed and the wind direction are within the wind load capacity range of the satellite-ground laser communication ground station, if so, determining that the communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the satellite-ground laser communication ground station has rainfall according to the relative humidity, if not, determining that the satellite-ground station communication link is available, and if so, determining that the satellite-ground station communication link is unavailable; and/or judging whether the atmospheric turbulence of the satellite-ground communication link exceeds the correction capability of the ground station according to the atmospheric turbulence information, if so, determining that the satellite-ground communication link is available, and if not, determining that the satellite-ground communication link is unavailable; and/or calculating the allowance of the communication link between the satellite and the ground station according to the cloud amount information and the loss, if the allowance is larger than zero, determining that the communication link between the satellite and the ground station is available, otherwise, determining that the communication link between the satellite and the ground station is available.
It should be understood that weather information, atmospheric turbulence information, cloud amount information, loss, etc. corresponding to different angles and positional relationships may be different, and therefore, the different angles and positional relationships should acquire the corresponding weather information, atmospheric turbulence information, cloud amount information, and loss to determine.
According to the embodiment of the disclosure, the method for detecting the communication availability of the satellite-to-ground laser communication ground station can further comprise the following steps: and storing the acquired meteorological information, atmospheric turbulence information, cloud cover information and images.
Illustratively, various environmental information such as acquired weather information, atmospheric turbulence information, cloud amount information and the like can be formatted, various data are aligned according to time and space, the environmental information in a JSON format is generated, and the environmental information in the JSON format can be stored in a MYSQL database. For the collected image information (such as all-sky images), the images are archived in a file storage space according to a time rule, and file paths are stored in a MYSQL database. The MYSQL database can communicate with the information acquisition module based on the TCP/IP protocol, and is used for storing various environmental information.
According to the embodiment of the disclosure, the method for detecting the communication availability of the satellite-to-ground laser communication ground station can further comprise the following steps: and issuing and displaying the availability detection result.
For example, the availability detection results of the satellite-to-ground station communication link may be published to a specified user in a specified format. For example, the availability detection result of the satellite and ground station communication link is formatted into JSON data packets, and pushed to the designated users through the webService interface.
The availability detection results of the satellite-to-ground station communication link can be displayed in two-dimensional and three-dimensional forms. The availability of communications on the satellite and ground station communication track face is shown, for example, in the form of a two-dimensional map or three-dimensional earth.
Fig. 2 schematically illustrates a block diagram of a detection apparatus for satellite-to-ground laser communication ground station communication availability according to an embodiment of the disclosure.
As shown in fig. 2, the detection device 200 for communication availability of the satellite-to-ground laser communication ground station may include, for example, an information acquisition module 210, a calculation module 220, an availability analysis module 230, an analysis module 240, and a distribution and display module 250.
The acquisition module 210 is configured to acquire meteorological information, atmospheric turbulence information and cloud information of the satellite-to-ground laser communication ground station. The information acquisition module is constructed by adopting a dynamic link library based on plug-in.
The calculation module 220 is configured to calculate an angle and a positional relationship of the satellite with respect to the satellite-to-earth laser communication ground station at each moment and a loss on a link between the satellite and the satellite-to-earth laser communication ground station.
The availability analysis module 230 is configured to obtain corresponding weather information and/or atmospheric turbulence information and/or cloud cover information and/or loss based on the angle and the position relationship corresponding to each time, and determine the availability of the satellite and the ground station communication link corresponding to the angle and the position relationship.
The storage module 240 is configured to store the acquired weather information, the atmospheric turbulence information, the cloud cover information, and the image.
And the issuing and displaying module 250 is used for issuing and displaying the availability detection result.
Any number of the modules, sub-modules, units, sub-units, or at least part of the functionality of any number of the sub-units according to embodiments of the invention may be implemented in one module. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present invention may be implemented as a split into multiple modules. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the invention may be implemented at least in part as hardware circuitry, such as a Field Programmable Gate Array (FPGA), programmable Logic Array (PLA), system-on-chip, system-on-substrate, system-on-package, application Specific Integrated Circuit (ASIC), or in hardware or firmware in any other reasonable manner of integrating or packaging circuitry, or in any one of, or in any suitable combination of, software, hardware, and firmware. Alternatively, one or more of the modules, sub-modules, units, sub-units according to embodiments of the invention may be at least partly implemented as computer program modules, which, when run, may perform the respective functions.
For example, any of the information collection module 210, the calculation module 220, the availability analysis module 230, the analysis module 240, and the publish and display module 250 may be combined in one module/unit/sub-unit or any of the modules/units/sub-units may be split into a plurality of modules/units/sub-units. Alternatively, at least some of the functionality of one or more of these modules/units/sub-units may be combined with at least some of the functionality of other modules/units/sub-units and implemented in one module/unit/sub-unit. According to embodiments of the invention, at least one of the information gathering module 210, the computing module 220, the availability analysis module 230, the analysis module 240, and the issue and display module 250 may be implemented at least in part as hardware circuitry, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or as hardware or firmware in any other reasonable manner of integrating or packaging the circuitry, or as any one of or a suitable combination of three of software, hardware, and firmware. Alternatively, at least one of the information collection module 210, the calculation module 220, the availability analysis module 230, the analysis module 240, and the distribution and display module 250 may be at least partially implemented as a computer program module, which when executed, may perform the corresponding functions.
It should be noted that, in the embodiment of the present invention, the part of the device for detecting the communication availability of the satellite-to-ground laser communication ground station corresponds to the part of the method for detecting the communication availability of the satellite-to-ground laser communication ground station in the embodiment of the present invention, and the specific implementation details and the brought technical effects are the same, which are not repeated herein.
Fig. 3 schematically shows a block diagram of an electronic device adapted to implement the method described above, according to an embodiment of the invention. The electronic device shown in fig. 3 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the invention.
As shown in fig. 3, an electronic device 300 according to an embodiment of the present invention includes a processor 301 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 302 or a program loaded from a storage section 308 into a Random Access Memory (RAM) 303. Processor 301 may include, for example, a general purpose microprocessor (e.g., a CPU), an instruction set processor and/or an associated chipset and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), or the like. Processor 301 may also include on-board memory for caching purposes. Processor 301 may include a single processing unit or multiple processing units for performing the different actions of the method flows according to embodiments of the invention.
In the RAM303, various programs and data required for the operation of the electronic apparatus 300 are stored. The processor 301, the ROM302, and the RAM303 are connected to each other via a bus 304. The processor 301 performs various operations of the method flow according to the embodiment of the present invention by executing programs in the ROM302 and/or the RAM 303. Note that the program may be stored in one or more memories other than the ROM302 and the RAM 303. The processor 301 may also perform various operations of the method flow according to embodiments of the present invention by executing programs stored in the one or more memories.
According to an embodiment of the invention, the electronic device 300 may further comprise an input/output (I/O) interface 305, the input/output (I/O) interface 305 also being connected to the bus 304. The electronic device 300 may also include one or more of the following components connected to the I/O interface 305: an input section 306 including a keyboard, a mouse, and the like; an output portion 307 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage section 308 including a hard disk or the like; and a communication section 309 including a network interface card such as a LAN card, a modem, or the like. The communication section 309 performs communication processing via a network such as the internet. The drive 310 is also connected to the I/O interface 305 as needed. A removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed on the drive 310 as needed, so that a computer program read therefrom is installed into the storage section 308 as needed.
According to an embodiment of the present invention, the method flow according to an embodiment of the present invention may be implemented as a computer software program. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 309, and/or installed from the removable medium 311. The above-described functions defined in the system of the embodiment of the present invention are performed when the computer program is executed by the processor 301. The systems, devices, apparatus, modules, units, etc. described above may be implemented by computer program modules according to embodiments of the invention.
The present invention also provides a computer-readable storage medium that may be embodied in the apparatus/device/system described in the above embodiments; or may exist alone without being assembled into the apparatus/device/system. The computer-readable storage medium carries one or more programs which, when executed, implement methods in accordance with embodiments of the present invention.
According to an embodiment of the present invention, the computer-readable storage medium may be a nonvolatile computer-readable storage medium. Examples may include, but are not limited to: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
For example, according to an embodiment of the invention, the computer-readable storage medium may include ROM302 and/or RAM303 and/or one or more memories other than ROM302 and RAM303 described above.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. Those skilled in the art will appreciate that the features recited in the various embodiments of the invention can be combined and/or combined in a variety of ways, even if such combinations or combinations are not explicitly recited in the present invention. In particular, the features described in the various embodiments of the invention may be combined and/or combined in various ways without departing from the spirit and teachings of the invention. All such combinations and/or combinations fall within the scope of the invention.
Claims (8)
1. The method for detecting the communication availability of the satellite-to-ground laser communication ground station is characterized by comprising the following steps of:
acquiring weather information, atmospheric turbulence information and cloud cover information of a satellite-to-ground laser communication ground station, wherein acquiring the weather information of the satellite-to-ground laser communication ground station comprises: measuring ground weather information, wherein the ground weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction of the satellite-to-ground laser communication ground station; calculating space weather information, wherein the space weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction at different heights;
calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment, and the loss on the link of the satellite and the satellite-ground laser communication ground station;
based on the angle and the position relation corresponding to each moment, acquiring the corresponding weather information and/or the atmospheric turbulence information and/or the cloud cover information and/or the loss to determine the availability of a satellite and ground station communication link corresponding to the angle and the position relation, including: judging whether the temperature is within the working temperature range of the satellite-ground laser communication ground station, if so, determining that a communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the wind speed and the wind direction are within the wind load capacity range of the satellite-ground laser communication ground station, if so, determining that the communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the satellite-ground laser communication ground station has rainfall according to the relative humidity, if not, determining that the satellite-ground station communication link is available, and if so, determining that the satellite-ground station communication link is unavailable; and/or judging whether the atmospheric turbulence of the satellite-ground communication link exceeds the correction capability of the ground station according to the atmospheric turbulence information, if so, determining that the satellite-ground communication link is available, and if not, determining that the satellite-ground communication link is unavailable; and/or calculating the allowance of the communication link between the satellite and the ground station according to the cloud amount information and the loss, if the allowance is larger than zero, determining that the communication link between the satellite and the ground station is available, otherwise, determining that the communication link between the satellite and the ground station is available.
2. The method for detecting according to claim 1, wherein the step of acquiring the atmospheric turbulence information of the satellite-to-ground laser communication ground station comprises the following steps:
measuring the first atmosphere dry length of the star at the first day vertex angle;
and calculating the second atmospheric coherence length of the satellite-to-ground laser communication ground station at the second zenith angle according to the first zenith angle and the first atmospheric coherence length, and using the second atmospheric coherence length as the atmospheric turbulence information of the satellite-to-ground laser communication ground station.
3. The method according to claim 2, wherein calculating the second atmospheric coherence length of the satellite-to-ground laser communication ground station at the second zenith angle according to the first zenith angle and the first atmospheric coherence length specifically comprises:
according to
r′ 0 ＝r 0 ·(cosθ) -3/5 ·(cosα) -3/5
Calculating the second atmosphere coherence length r' 0 Wherein r is 0 And for the first atmosphere dry length, θ is the first zenith angle, and α is the second zenith angle.
4. The method for detecting the satellite-to-ground laser communication ground station according to claim 1, wherein the method for acquiring the cloud cover information of the satellite-to-ground laser communication ground station specifically comprises the following steps:
collecting a first all-sky image of a visible light wave band and a second all-sky image of an infrared wave band;
the cloud amount information is extracted from the first all-sky image and the second all-sky image.
5. The method according to claim 1, wherein calculating the angle and the positional relationship of the satellite with respect to the satellite-to-earth laser communication ground station at each time specifically comprises:
calculating coordinates of the satellite in the field angle range of the satellite-to-ground laser communication ground station at each moment;
and calculating the distance, azimuth angle and pitch angle of the satellite relative to the satellite-ground laser communication ground station at each moment according to the coordinates of each moment and the position information of the satellite on the satellite-ground laser communication ground, and taking the distance, azimuth angle and pitch angle as the angle and position relation.
6. The method for detecting communication availability of the satellite-to-ground laser communication ground station according to claim 1, wherein weather information, atmospheric turbulence information and cloud amount information of the satellite-to-ground laser communication ground station are acquired based on a plug-in dynamic link library.
7. The method of claim 4, wherein the first and second all-sky images are acquired at a field angle that is twice or more than a second zenith angle range of the satellite-to-ground laser communication ground station, and at a resolution that is three times or more than an angular resolution corresponding to the second zenith angle of the satellite-to-ground laser communication ground station.
8. The utility model provides a detection device of satellite-to-ground laser communication ground station communication availability which characterized in that includes:
the information acquisition module is used for acquiring meteorological information, atmospheric turbulence information and cloud cover information of the satellite-to-ground laser communication ground station; the information acquisition module is constructed by adopting a dynamic link library based on plug-in; the method for acquiring the meteorological information of the satellite-to-ground laser communication ground station comprises the following steps: measuring ground weather information, wherein the ground weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction of the satellite-to-ground laser communication ground station; calculating space weather information, wherein the space weather information comprises at least one of temperature, relative humidity, air pressure, wind speed and wind direction at different heights;
the calculation module is used for calculating the angle and the position relation of the satellite relative to the satellite-ground laser communication ground station at each moment and the loss on the link of the satellite and the satellite-ground laser communication ground station;
the availability analysis module is configured to obtain the corresponding weather information and/or the atmospheric turbulence information and/or the cloud amount information and/or the loss based on the angle and the position relationship corresponding to each moment, and determine the availability of a satellite and ground station communication link corresponding to the angle and the position relationship, where the availability analysis module includes: judging whether the temperature is within the working temperature range of the satellite-ground laser communication ground station, if so, determining that a communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the wind speed and the wind direction are within the wind load capacity range of the satellite-ground laser communication ground station, if so, determining that the communication link between the satellite and the ground station is available, and if not, determining that the communication link between the satellite and the ground station is unavailable; and/or judging whether the satellite-ground laser communication ground station has rainfall according to the relative humidity, if not, determining that the satellite-ground station communication link is available, and if so, determining that the satellite-ground station communication link is unavailable; and/or judging whether the atmospheric turbulence of the satellite-ground communication link exceeds the correction capability of the ground station according to the atmospheric turbulence information, if so, determining that the satellite-ground communication link is available, and if not, determining that the satellite-ground communication link is unavailable; and/or calculating the allowance of the communication link between the satellite and the ground station according to the cloud amount information and the loss, if the allowance is larger than zero, determining that the communication link between the satellite and the ground station is available, otherwise, determining that the communication link between the satellite and the ground station is available.
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| CN116527135B (en) * | 2023-06-30 | 2023-09-12 | 中国科学院空天信息创新研究院 | Site availability determination method, system, device, electronic equipment and storage medium |
| CN117560638B (en) * | 2024-01-10 | 2024-03-22 | 山东派蒙机电技术有限公司 | Converged communication method, device and equipment applied to mobile terminal communication system |
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