Laser link data processing method and device, electronic equipment and storage medium

Abstract

The invention relates to a laser link data processing method and device, electronic equipment and a storage medium, and belongs to the technical field of data processing.The method comprises the steps that the weather severity level and the communication index of a laser link experiment are determined; according to the weather severity level, a radio wave signal attenuation program or laser link communication is selected to obtain attenuated laser link experiment data; inputting the laser link experiment data into the VLC communication system for processing; wherein the radio wave signal attenuation program comprises a rainwater communication attenuation program, a cloud communication attenuation program, a snowfall communication attenuation program and a dust communication attenuation program, and the communication index is used for setting a threshold value in the radio wave signal attenuation program. According to the invention, the weather influence of each laser link experiment is analyzed, different programs are selected to obtain laser link experiment data of different degrees of attenuation, and the laser link experiment data of different degrees of attenuation are processed and recovered through a VLC communication system to obtain an original signal of a laser link.

Description

Technical Field

[0001] The present invention belongs to the technical field of data processing, and in particular relates to a laser link data processing method and device. Background Art

[0002] The disturbance of atmospheric turbulence is the main factor affecting the far-field dynamic characteristics of the laser link beam. Whether from the perspective of composition or transformation, the atmosphere is a very complex system, affected by many different factors. The atmosphere can absorb ultraviolet radiation from the sun and light waves in the visible light band. The impact of atmospheric turbulence is closely related to the chemical reactions that exist in it. The atmosphere has viscosity and is divided into two forms of motion: flow and laminar flow. Under normal circumstances, the atmosphere is in a state of high-speed turbulent motion, and laminar flow is a complementary mixed stratified flow mode that exists when the flow rate is slower. The main reason for the generation of atmospheric airflow is that the wind shear caused by the push of the surface air flow or the solar thermal radiation phenomenon generates different heat at different locations on the surface, resulting in temperature differences between different locations on the surface, causing convection effects and heat dissipation.

[0003] In actual free-space optical applications, in order to meet the communication rate and quality requirements, it is necessary to introduce multiple-input multiple-output technology, placing multiple lasers and photodetectors at the transmitter and receiver, respectively, so that the channel fading between different laser-photodetector pairs is statistically independent of each other, thereby obtaining diversity gain, thereby achieving the purpose of improving the communication performance of the free-space optical system. However, the impact of various extreme weather conditions on laser link transmission needs to be paid special attention to, and there is currently no method for processing laser link transmission data under extreme weather conditions. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the purpose of the invention is to provide a laser link data processing method, device, electronic device and storage medium. In the present invention, the weather impact on each laser link experiment is analyzed, different programs are selected to obtain laser link experimental data with different degrees of attenuation, and the laser link experimental data with different degrees of attenuation are processed and restored through a VLC communication system to obtain the original signal of the laser link.

[0005] A first aspect of the present invention provides a laser link data processing method, comprising:

[0006] Determine weather severity levels and communication indices for laser link experiments;

[0007] According to the severity of the weather, the radio wave signal attenuation program or laser link communication is selected to obtain the attenuated laser link experimental data;

[0008] The attenuated laser link experimental data is input into the VLC communication system for processing to obtain the original transmission signal;

[0009] Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0010] Furthermore, in the above laser link data processing method, determining the weather severity level and communication index of the laser link experiment includes:

[0011] Obtain the temperature during the laser link experiment, and determine the saturated water vapor partial pressure during the laser link experiment according to the temperature;

[0012] The water vapor density is determined based on the saturated water vapor partial pressure and the relative humidity of the air during the laser link experiment;

[0013] Obtain ground visibility during the laser link experiment and determine the atmospheric transmittance under clear weather conditions based on ground visibility;

[0014] Correcting the atmospheric transmittance according to the water vapor density to obtain a first atmospheric transmittance;

[0015] A weather weight factor is set, and the first atmospheric transmittance is corrected according to the weather weight factor to obtain a second atmospheric transmittance;

[0016] The gray value of each CCD image during the laser link experiment is used as a measure of the received light intensity to determine the atmospheric scintillation index;

[0017] The communication index is determined according to the second atmosphere transmittance and the atmospheric scintillation index, and the weather severity level is divided into five levels according to the second atmosphere transmittance.

[0018] Furthermore, in the above laser link data processing method, the attenuated laser link data is obtained by using a radio wave signal attenuation program or laser link communication according to the severity level of the weather, including:

[0019] If the weather severity level is level 1 or 2, the radio wave signal attenuation program is selected to obtain the attenuated laser link data;

[0020] If the weather severity level is level 3, 4 or 5, laser link communication is selected to obtain attenuated laser link data.

[0021] Furthermore, in the above laser link data processing method, the radio wave signal attenuation procedure is selected, and further includes:

[0022] Select the rain communication attenuation program, cloud and fog communication attenuation program, snow communication attenuation program or dust communication attenuation program according to weather conditions.

[0023] Furthermore, in the above-mentioned laser link data processing method, a rain communication attenuation program, a fog communication attenuation program, a snowfall communication attenuation program or a dust communication attenuation program is selected according to weather conditions, including:

[0024] If it is rainy weather, select the rain communication attenuation program;

[0025] If it is foggy weather, select the foggy communication attenuation program;

[0026] If it is precipitation weather, select the snowfall communication attenuation program;

[0027] If it is dusty weather, select the dust communication attenuation program.

[0028] Furthermore, in the above-mentioned laser link data processing method, the rain communication attenuation procedure includes: determining a rain communication attenuation rate and setting a rain communication attenuation threshold, wherein the rain communication attenuation rate is determined based on the rainfall and the parameters of polarization in two different conditions, horizontal and vertical;

[0029] The cloud attenuation procedure includes: determining the cloud communication attenuation rate and setting the cloud communication attenuation threshold. The cloud communication attenuation rate is determined based on the visibility of the cloud and fog and the analysis frequency of the atmospheric attenuation rate;

[0030] The snowfall communication attenuation procedure includes: determining the snowfall communication attenuation rate and setting the snowfall communication attenuation threshold, wherein the snowfall communication attenuation rate is determined based on the analysis frequency of the atmospheric attenuation rate and the snowfall frequency;

[0031] The dust communication attenuation program includes: determining the dust communication attenuation rate and setting the dust communication attenuation threshold. The dust communication attenuation rate is determined based on the volume density of the dust, the diameter D of the dust particles, the mean value of lnD, the real part of the complex dielectric constant of the wet dust, the atmospheric attenuation rate and the atmospheric scintillation index.

[0032] Furthermore, in the above laser link data processing method, the attenuated laser link experimental data is input into the VLC communication system for processing to obtain the original transmission signal, including:

[0033] The attenuated laser link experimental data is input into the LED light coverage area in the VLC communication system to obtain an optical signal carrying the laser link experimental data;

[0034] Transmitting the optical signal carrying the laser link experimental data to the photodetector at the receiving end of the VLC communication system;

[0035] After receiving the optical signal carrying the laser link experimental data, the photoelectric detector at the receiving end converts the optical signal into an electrical signal, and then demodulates and decodes the electrical signal through an amplification, demodulation, and decoding signal processor to obtain the original transmission signal.

[0036] A second aspect of the present invention further provides a laser link data processing device, comprising:

[0037] Determination module: used to determine the weather severity level and communication index of the laser link experiment;

[0038] The selection module and the first obtaining module are used to select the radio wave signal attenuation program or the laser link communication to obtain the attenuated laser link experimental data according to the severity level of the weather;

[0039] The second obtaining module is used to input the laser link experimental data into the VLC communication system for processing to obtain the original transmission signal;

[0040] Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0041] According to a third aspect of the present invention, an electronic device is provided, comprising: a processor and a memory;

[0042] The processor is used to execute any one of the above laser link data processing methods by calling the program or instruction stored in the memory.

[0043] In a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute any one of the above laser link data processing methods.

[0044] The beneficial effects of the present invention are as follows: the present invention determines the weather severity level and communication index of the laser link experiment; selects the radio wave signal attenuation program or laser link communication according to the weather severity level to obtain the attenuated laser link experiment data; inputs the laser link experiment data into the VLC communication system for processing; wherein the radio wave signal attenuation program includes: rain communication attenuation program, fog communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the threshold in the radio wave signal attenuation program. The present invention analyzes the weather impact of each laser link experiment, selects different programs to obtain laser link experiment data with different degrees of attenuation, and processes the laser link experiment data with different degrees of attenuation through the VLC communication system to recover the original signal of the laser link. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are only used to illustrate specific embodiments and are not considered to limit the present invention. In the entire drawings, the same reference symbols represent the same components. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0046] Figure 1 A diagram of a laser link data processing method provided by an embodiment of the present invention;

[0047] Figure 2 A method diagram for determining weather severity level and communication index of a laser link experiment provided by an embodiment of the present invention;

[0048] Figure 3 A method diagram of inputting laser link experimental data into a VLC communication system for processing to obtain an original transmission signal provided by an embodiment of the present invention;

[0049] Figure 4 A diagram of a laser link data processing device provided by an embodiment of the present invention;

[0050] Figure 5 A schematic block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present invention.

[0052] Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention.

[0053] In the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of methods and systems consistent with some aspects of the present invention as detailed in the appended claims.

[0055] Before introducing the embodiments of the present invention, professional terms involved in the present invention are first introduced.

[0056] Laser communication is a communication method that uses lasers to transmit information. Laser is a new type of light source with the characteristics of high brightness, strong directionality, good monochromaticity, and strong coherence. According to the different transmission media, it can be divided into atmospheric laser communication and optical fiber communication. Atmospheric laser communication is laser communication that uses the atmosphere as the transmission medium.

[0057] The present invention proposes a laser link data processing method, device, electronic device and storage medium, analyzes the weather influence on each laser link experiment, selects different programs to obtain laser link experiment data with different degrees of attenuation, and processes the laser link experiment data with different degrees of attenuation through a VLC communication system to restore the original signal of the laser link.

[0058] Method Embodiment

[0059] Figure 1 A diagram of a laser link data processing method provided by an embodiment of the present invention.

[0060] In the first aspect of the present invention, a laser link data processing method is proposed, combining Figure 1 , including three steps from S1 to S3:

[0061] S1: Determine the weather severity level and communication index for the laser link experiment.

[0062] Specifically, in an embodiment of the present invention, the weather severity level and communication index of the laser link experiment are determined by the temperature, relative air humidity, ground visibility, weather weight factor, grayscale value of each frame of CCD image, etc. during the laser link experiment. The determination method is described in detail below. The communication index is used to set the rain communication attenuation threshold, cloud and fog communication attenuation threshold, snowfall communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0063] S2: Depending on the severity of the weather, choose to use the radio wave signal attenuation program or laser link communication to obtain the attenuated laser link experimental data.

[0064] Specifically, in an embodiment of the present invention, the weather severity level is divided into five levels. If the weather severity level is level one or level two, a radio wave signal attenuation program is selected to obtain attenuated laser link data; if the weather severity level is level three, level four or level five, laser link communication is selected to obtain attenuated laser link data, wherein the radio wave signal attenuation program includes: rain communication attenuation program, cloud and fog communication attenuation program, snow communication attenuation program and dust communication attenuation program.

[0065] S3: Input the attenuated laser link experimental data into the VLC communication system for processing to obtain the original transmission signal.

[0066] Specifically, in an embodiment of the present invention, the VLC communication system includes: an indoor LED lamp, a photoelectric detector, and an amplifying, demodulating, and decoding signal processor. The attenuated laser link experimental data is input into the indoor LED lamp, the photoelectric detector, and the amplifying, demodulating, and decoding signal processor in the VLC communication system, and processed in sequence to obtain the original transmission signal.

[0067] Figure 2 A method diagram for determining the weather severity level and communication index of a laser link experiment provided by an embodiment of the present invention.

[0068] Furthermore, in the above laser link data processing method, the weather severity level and communication index of the laser link experiment are determined, combined with Figure 2 , including seven steps from S21 to S27:

[0069] S21: Acquire the temperature during the laser link experiment, and determine the saturated water vapor partial pressure during the laser link experiment according to the temperature.

[0070] S22: Determine the water vapor density based on the saturated water vapor partial pressure and the relative humidity of the air during the laser link experiment.

[0071] S23: Obtain ground visibility during the laser link experiment, and determine the atmospheric transmittance under clear weather conditions based on the ground visibility.

[0072] S24: Correcting the atmospheric transmittance according to the water vapor density to obtain a first atmospheric transmittance.

[0073] Specifically, in the embodiment of the present invention, the first atmospheric transmittance is the atmospheric transmittance in clear weather.

[0074] S25: Setting a weather weight factor, and correcting the first atmospheric transmittance according to the weather weight factor to obtain a second atmospheric transmittance.

[0075] Specifically, in the embodiment of the present invention, the weather weight factor A=1 is set when it is clear and cloudless; the weather weight factor A=0.75 is set when it is lightly cloudy; the weather weight factor A=0.2 is set when it is cloudy; the weather weight factor A=0.1 is set when it is foggy; the weather weight factor A=0 is set when it is rainy, snowy, hail, storm, sandstorm, or thick smoke, and the atmospheric transmittance in clear weather is corrected according to the weather weight factor to obtain the atmospheric transmittance during the laser link experiment.

[0076] S26: The grayscale value of each CCD image frame during the laser link experiment is used as a measure of the received light intensity to determine the atmospheric scintillation index.

[0077] S27: determining a communication index according to the second atmosphere transmittance and the atmosphere scintillation index, and dividing the weather severity level into five levels according to the second atmosphere transmittance.

[0078] Specifically, in the embodiment of the present invention, when the second atmospheric transmittance is equal to 0, the weather severity level is level one, when the second atmospheric transmittance is greater than 0 and less than 0.4, the weather severity level is level two, when the second atmospheric transmittance is greater than 0.4 and less than 0.6, the weather severity level is level three, when the second atmospheric transmittance is greater than 0.6 and less than 0.8, the weather severity level is level four, and when the second atmospheric transmittance is greater than 0.8 and less than 1, the weather severity level is level five.

[0079] Furthermore, in the above laser link data processing method, the attenuated laser link data is obtained by using a radio wave signal attenuation program or laser link communication according to the severity level of the weather, including:

[0080] If the weather severity level is level 1 or 2, the radio wave signal attenuation program is selected to obtain the attenuated laser link data;

[0081] If the weather severity level is level 3, 4 or 5, laser link communication is selected to obtain attenuated laser link data.

[0082] Specifically, in the embodiment of the present invention, since the laser link data has different degrees of attenuation under different weather conditions, the weather is divided into different severity levels, and different attenuation methods are selected under different severity levels to obtain the attenuated laser link data, thereby improving the accuracy of the laser link data.

[0083] Furthermore, in the above laser link data processing method, the radio wave signal attenuation procedure is selected, and further includes:

[0084] Select the rain communication attenuation program, cloud and fog communication attenuation program, snow communication attenuation program or dust communication attenuation program according to weather conditions.

[0085] Specifically, in the embodiments of the present invention, selecting a rain communication attenuation program, a cloud communication attenuation program, a snowfall communication attenuation program, or a sandstorm communication attenuation program according to weather conditions specifically includes: if it is rainy weather, select the rain communication attenuation program; if it is cloudy weather, select the cloud communication attenuation program; if it is precipitation weather, select the snowfall communication attenuation program; if it is sandstorm weather, select the sandstorm communication attenuation program.

[0086] Further, in the above laser link data processing method, the rain communication attenuation program includes: determining the rain communication attenuation rate and setting the rain communication attenuation threshold. The rain communication attenuation rate is determined according to the rainfall amount and the parameters in the polarization under two different conditions of horizontal and vertical.

[0087] Specifically, in the embodiments of the present invention, the rain communication attenuation rate is determined by the following formula: y1 = KR A

[0088] Wherein, y1 represents the rain communication attenuation rate, R represents the rainfall amount, the unit is mmh, K represents the parameter in the polarization under the horizontal condition, and A represents the parameter in the polarization under the vertical condition.

[0089] The cloud attenuation program includes: determining the cloud communication attenuation rate and setting the cloud communication attenuation threshold. The cloud communication attenuation rate is determined according to the visibility of the cloud and the analysis frequency of the atmospheric attenuation rate.

[0090] Specifically, in the embodiments of the present invention, the cloud communication attenuation rate is determined by the following formula: y2 = 0.148f 2 / v 1.43

[0091] Wherein, y2 represents the cloud communication attenuation rate, the unit is db / km, f represents the analysis frequency of the atmospheric attenuation rate, the unit is GHz, and the value range is 0 - 350 GHz, v represents the visibility of the cloud, 20m < V < 50m represents dense fog; 50m < V < 500m represents thick fog, 200m << 500m represents light fog, and the visibility v of the cloud is from 20m to 500m.

[0092] The snowfall communication attenuation program includes: determining the snowfall communication attenuation rate and setting the snowfall communication attenuation threshold. The snowfall communication attenuation rate is determined according to the analysis frequency of the atmospheric attenuation rate and the snowfall frequency.

[0093] Specifically, in the embodiments of the present invention, the snowfall communication attenuation rate is determined by the following formula:

[0094] y3 = 7.47 * 10 -5 f * I(1 + 5.77 * 10 -5 f 3 I 0.6)

[0095] Where y3 represents the snowfall communication attenuation rate, f represents the analysis frequency of the atmospheric attenuation rate in GHz, and I represents the snowfall intensity in mmh.

[0096] The dust communication attenuation program includes: determining the dust communication attenuation rate and setting the dust communication attenuation threshold. The dust communication attenuation rate is determined based on the volume density of the dust, the diameter D of the dust particles, the mean value of lnD, the real part of the complex dielectric constant of the wet dust, the analysis frequency of the atmospheric attenuation rate and the atmospheric scintillation index.

[0097] Specifically, in the embodiment of the present invention, the dust communication attenuation rate is determined by the following formula:

[0098]

[0099] Where y4 represents the dust communication attenuation rate, f represents the analysis frequency of the atmospheric attenuation rate, ε' represents the real part of the complex dielectric constant of wet dust, N0 represents the volume density of dust, σ represents the atmospheric scintillation index, and m represents the mean value of lnD.

[0100] Figure 3 A method diagram of inputting laser link experimental data into a VLC communication system for processing to obtain an original transmission signal is provided in an embodiment of the present invention.

[0101] Furthermore, in the above laser link data processing method, the laser link experimental data is input into the VLC communication system for processing to obtain the original transmission signal, and combined with Figure 3 , including three steps from S31 to S33:

[0102] S31: Input the attenuated laser link experimental data into the LED light coverage area in the VLC communication system to obtain an optical signal carrying the laser link experimental data.

[0103] S32: Transmitting the optical signal carrying the laser link experimental data to the photodetector at the receiving end of the VLC communication system.

[0104] S33: After receiving the optical signal carrying the laser link experimental data, the photoelectric detector at the receiving end converts the optical signal into an electrical signal, and demodulates and decodes the electrical signal through an amplification, demodulation, and decoding signal processor to obtain the original transmission signal.

[0105] Specifically, in an embodiment of the present invention, the attenuated laser link experimental data is input into the indoor LED light area in the VLC communication system to obtain an optical signal carrying the laser link experimental data; the optical signal carrying the laser link experimental data is transmitted through free space to the photoelectric detector at the receiving end of the VLC communication system, and after the photoelectric detector at the receiving end receives the optical signal carrying the laser link experimental data, the optical signal is converted into an electrical signal, and the electrical signal is demodulated and decoded by an amplification, demodulation, and decoding signal processor to restore it to the original transmission signal.

[0106] Device Embodiment

[0107] Figure 4 A diagram of a laser link data processing device provided in an embodiment of the present invention.

[0108] In a second aspect of the present invention, a laser link data processing device is also provided, Figure 4 ,include:

[0109] Determination module 41: used to determine the weather severity level and communication index of the laser link experiment.

[0110] Specifically, in the embodiment of the present invention, the determination module 41 determines the weather severity level and communication index of the laser link experiment through the temperature, relative air humidity, ground visibility, weather weight factor, grayscale value of each frame of CCD image, etc. during the laser link experiment. The communication index is used to set the rain communication attenuation threshold, cloud and fog communication attenuation threshold, snowfall communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0111] The selection module 42 and the first obtaining module 43 are used to select the radio wave signal attenuation program or the laser link communication to obtain the attenuated laser link experimental data according to the severity level of the weather.

[0112] Specifically, in the embodiment of the present invention, the weather severity level is divided into five levels. If the weather severity level is level one or level two, the selection module 42 and the first obtaining module 43 choose to use the radio wave signal attenuation program to obtain the attenuated laser link data; if the weather severity level is level three, level four or level five, the selection module 42 and the first obtaining module 43 choose to use laser link communication to obtain the attenuated laser link data, wherein the radio wave signal attenuation program includes: rain communication attenuation program, cloud and fog communication attenuation program, snow communication attenuation program and dust communication attenuation program.

[0113] The second obtaining module 44 is used to input the attenuated laser link experimental data into the VLC communication system for processing to obtain the original transmission signal.

[0114] Specifically, in the embodiment of the present invention, the VLC communication system includes: an indoor LED lamp, a photoelectric detector, and an amplification, demodulation, and decoding signal processor. The second obtaining module 44 inputs the attenuated laser link experimental data into the indoor LED lamp, photoelectric detector, and amplification, demodulation, and decoding signal processor in the VLC communication system for processing in sequence to obtain the original transmission signal.

[0115] Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0116] According to a third aspect of the present invention, an electronic device is provided, comprising: a processor and a memory;

[0117] The processor is used to execute any one of the above laser link data processing methods by calling the program or instruction stored in the memory.

[0118] In a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute any one of the above laser link data processing methods.

[0119] Figure 5 It is a schematic block diagram of an electronic device provided by an embodiment of the present invention.

[0120] like Figure 5 As shown, the electronic device includes: at least one processor 501, at least one memory 502 and at least one communication interface 503. The various components in the electronic device are coupled together through a bus system 504. The communication interface 503 is used to transmit information between external devices. It can be understood that the bus system 504 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 5 Various buses are labeled as bus system 504 .

[0121] It can be understood that the memory 502 in this embodiment can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.

[0122] In some implementations, the memory 502 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system and application programs.

[0123] The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. A program that implements any method in a laser link data processing method provided in an embodiment of the present invention can be included in the application.

[0124] In the embodiment of the present invention, the processor 501 calls the program or instruction stored in the memory 502, specifically, the program or instruction stored in the application program, and the processor 501 is used to execute the steps of each embodiment of the laser link data processing method provided in the embodiment of the present invention.

[0125] Determine weather severity levels and communication indices for laser link experiments;

[0126] According to the severity of the weather, the radio wave signal attenuation program or laser link communication is selected to obtain the attenuated laser link experimental data;

[0127] The laser link experimental data is input into the VLC communication system for processing to obtain the original transmission signal;

[0128] Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

[0129] Any method in a laser link data processing method provided in an embodiment of the present invention can be applied to the processor 501, or implemented by the processor 501. The processor 501 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in the form of software. The above processor 501 can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0130] The steps of any method in a laser link data processing method provided in an embodiment of the present invention can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software units in the decoding processor. The software unit can be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the method in combination with its hardware.

[0131] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present invention and to form different embodiments.

[0132] Those skilled in the art will appreciate that the description of each embodiment has its own emphasis, and for parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0133] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims. The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

[0134] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A laser link data processing method, characterized in that: include: Determine weather severity levels and communication indices for laser link experiments; According to the severity of the weather, a radio wave signal attenuation program or laser link communication is selected to obtain attenuated laser link experimental data; Inputting the attenuated laser link experimental data into the VLC communication system for processing to obtain the original transmission signal; Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

2. A laser link data processing method according to claim 1, characterized in that: The determination of the weather severity level and communication index of the laser link experiment includes: Obtain the temperature during the laser link experiment, and determine the saturated water vapor partial pressure during the laser link experiment according to the temperature; Determining water vapor density according to the saturated water vapor partial pressure and the relative humidity of air during the laser link experiment; Obtaining ground visibility during the laser link experiment, and determining the atmospheric transmittance under clear weather conditions based on the ground visibility; Correcting the atmospheric transmittance according to the water vapor density to obtain a first atmospheric transmittance; Setting a weather weight factor, and correcting the first atmospheric transmittance according to the weather weight factor to obtain a second atmospheric transmittance; The gray value of each CCD image during the laser link experiment is used as a measure of the received light intensity to determine the atmospheric scintillation index; A communication index is determined according to the second atmospheric transmittance and the atmospheric scintillation index, and the weather severity level is divided into five levels according to the second atmospheric transmittance.

3. A laser link data processing method according to claim 1, characterized in that: The step of selecting a radio wave signal attenuation procedure or laser link communication according to the weather severity level to obtain attenuated laser link data includes: If the weather severity level is level 1 or 2, the radio wave signal attenuation program is selected to obtain the attenuated laser link data; If the weather severity level is level 3, 4 or 5, laser link communication is selected to obtain attenuated laser link data.

4. A laser link data processing method according to claim 1, characterized in that: The selection of a radio wave signal attenuation procedure further includes: Select the rain communication attenuation program, fog communication attenuation program, snow communication attenuation program or dust communication attenuation program according to weather conditions.

5. A laser link data processing method according to claim 4, characterized in that: The selecting of the rain communication attenuation program, the cloud and fog communication attenuation program, the snow communication attenuation program or the dust communication attenuation program according to the weather conditions comprises: If it is rainy weather, select the rain communication attenuation program; If it is foggy weather, select the foggy communication attenuation program; If it is precipitation weather, select the snowfall communication attenuation program; If it is dusty weather, select the dust communication attenuation program.

6. A laser link data processing method according to claim 1, characterized in that: The rainwater communication attenuation procedure includes: determining the rainwater communication attenuation rate and setting the rainwater communication attenuation threshold, wherein the rainwater communication attenuation rate is determined according to the rainfall and the parameters of polarization in two different conditions, horizontal and vertical; The cloud attenuation procedure includes: determining the cloud communication attenuation rate and setting the cloud communication attenuation threshold, wherein the cloud communication attenuation rate is determined according to the visibility of the cloud and the analysis frequency of the atmospheric attenuation rate; The snowfall communication attenuation procedure includes: determining the snowfall communication attenuation rate and setting the snowfall communication attenuation threshold, wherein the snowfall communication attenuation rate is determined based on the analysis frequency of the atmospheric attenuation rate and the snowfall frequency; The dust communication attenuation program includes: determining the dust communication attenuation rate and setting the dust communication attenuation threshold. The dust communication attenuation rate is determined based on the volume density of the dust, the diameter D of the dust particles, the average value of lnD, the real part of the complex dielectric constant of the wet dust, the atmospheric attenuation rate and the atmospheric scintillation index.

7. A laser link data processing method according to claim 1, characterized in that: The attenuated laser link experimental data is input into the VLC communication system for processing to obtain the original transmission signal, including: Inputting the attenuated laser link experimental data into the LED light coverage area in the VLC communication system to obtain the optical signal carrying the laser link experimental data; Transmitting the optical signal carrying the laser link experimental data to a photoelectric detector at a receiving end of the VLC communication system; After receiving the optical signal carrying the laser link experimental data, the photoelectric detector at the receiving end converts the optical signal into an electrical signal, and demodulates and decodes the electrical signal to obtain the original transmission signal.

8. A laser link data processing device, characterized in that: include: Determination module: used to determine the weather severity level and communication index of the laser link experiment; The selection module and the first obtaining module are used to select the radio wave signal attenuation program or the laser link communication to obtain the attenuated laser link experimental data according to the weather severity level; The second obtaining module is used for inputting the attenuated laser link experimental data into the VLC communication system for processing to obtain the original transmission signal; Among them, the radio wave signal attenuation program includes: rain communication attenuation program, cloud communication attenuation program, snow communication attenuation program and dust communication attenuation program, and the communication index is used to set the rain communication attenuation threshold, cloud communication attenuation threshold, snow communication attenuation threshold and dust communication attenuation threshold in the radio wave signal attenuation program.

9. An electronic device, characterized in that: include: Processor and memory; The processor is used to execute the laser link data processing method as claimed in any one of claims 1 to 7 by calling the program or instruction stored in the memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute a laser link data processing method as claimed in any one of claims 1 to 7.

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