A method and system for calculating the far-field average intensity of an incoherently synthesized beam

Abstract

This application discloses a method and system for calculating the far-field average light intensity of an incoherently synthesized beam, belonging to the field of laser atmospheric transmission technology. The method includes: acquiring laser system parameters, atmospheric environment parameters, and a radius scaling index; calculating the far-field ring radius affected by multiple effects based on the laser system parameters, atmospheric environment parameters, and the radius scaling index; and calculating the far-field ring average light intensity based on the laser system parameters, atmospheric environment parameters, and the far-field ring radius affected by multiple effects. This application considers the combined effects of beam quality, mechanical jitter, diffraction, turbulence, thermal corona, and attenuation effects, and calculates the far-field average light intensity using laser system parameters, atmospheric environment parameters, and the radius scaling index.

Description

Technical Field

[0001] This application belongs to the field of laser atmospheric transmission technology, and specifically relates to a method and system for calculating the far-field average light intensity of an incoherent synthesized beam. Background Technology

[0002] When a laser propagates through the atmosphere, the average intensity reaching the far field is a crucial indicator for evaluating the effectiveness of a laser system. The atmosphere contains numerous gas molecules and aerosols, and the interaction between the laser and the atmosphere produces diffraction, turbulence, thermal coma, and attenuation effects. The far-field average intensity is influenced by both laser system parameters and atmospheric environment parameters, resulting in different values ​​under different conditions. For evaluating far-field average intensity, theoretical analysis methods are only applicable to ideal situations and rarely yield analytical solutions in general cases. Physical experiments are expensive and difficult to conduct on a large scale, while wave optics programs are slow and difficult to compute quickly. The scaling law model abstracts the general law of the expansion radius variation from the complex atmospheric laser propagation mechanism, meeting the need for rapid calculations, and has received increasing attention in the design and practical application of high-energy laser systems.

[0003] Because the emission power of a single fiber laser beam has a theoretical limit, beam combining techniques are used to increase the emission power of laser systems. Incoherent beam combining, which merges multiple beams located at different spatial positions into a single beam, is currently a hot topic in research and application. However, in practical applications of incoherently combined beams, a fast method for calculating the far-field average intensity is lacking. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a method and system for calculating the far-field average light intensity of an incoherent synthesized beam. The calculation method considers the combined effects of beam quality, mechanical jitter, diffraction, turbulence, thermal coma, and attenuation effects, and achieves rapid calculation of the far-field average light intensity through laser system parameters, atmospheric environment parameters, and radius scaling exponent.

[0005] The first objective of this application is to provide a method for calculating the far-field average intensity of an incoherently synthesized beam, including:

[0006] Acquire laser system parameters, atmospheric environment parameters, and radius scaling index;

[0007] Based on laser system parameters, atmospheric environment parameters, and radius scaling index, the far-field circumference radius affected by multiple effects is calculated.

[0008] The average light intensity of the far-field ring is calculated based on laser system parameters, atmospheric environment parameters, and the influence of multiple effects on the far-field ring radius.

[0009] In a specific embodiment of this application, the far-field circumference radius affected by multiple effects is calculated based on laser system parameters, atmospheric environment parameters, and radius scaling exponent, including:

[0010] Calculate the far-field circumference radius of the diffraction effect based on the laser system parameters and the diffraction scaling index in the radius scaling index;

[0011] Based on the far-field encircling radius of the diffraction effect, the beam quality and the far-field encircling radius of the mechanical jitter effect are calculated according to the laser system parameters and the jitter scaling index in the radius scaling index.

[0012] Based on the far-field encircling radius of beam quality and mechanical jitter effect, the far-field encircling radius of turbulence effect is calculated according to the far-field integral parameter in the laser system parameters and atmospheric environment parameters, and the turbulence scaling index in the radius scaling index.

[0013] Based on the far-field radius of the turbulence effect, the far-field radius of the multi-effect influence is calculated according to the far-field radius of the diffraction effect, the far-field integral parameter in the atmospheric environmental parameters, and the thermal halo scaling index in the radius scaling index.

[0014] In a specific embodiment of this application, the formula for calculating the far-field encircling radius of the diffraction effect is as follows:

[0015]

[0016] in, The far-field ring power ratio, The radius of the far-field ring of the diffraction effect satisfies the condition of... The ratio of the integrated power in the circular area with radius to the total far-field power is . , The first diffraction scaling index, This is the second diffraction scaling index. The third diffraction scaling index. Sub-bundle fill factor, For wavelength, Focal length Let be the effective radius of the sub-bundle.

[0017] In a specific embodiment of this application, the formula for calculating the beam quality and the far-field ring radius of the mechanical jitter effect is as follows:

[0018]

[0019] in, The far-field ring power ratio, For the far-field ring radius of beam quality and mechanical jitter effect, satisfying the following: The ratio of the integrated power in the circular area with radius to the total far-field power is . , For mechanical jitter angle, Focal length The radius of the far-field ring of the diffraction effect. The first jitter scaling index, The second jitter scaling index, The third jitter scaling index, This represents the sub-beam quality factor.

[0020] In a specific embodiment of this application, the formula for calculating the far-field radius of the turbulence effect is as follows:

[0021]

[0022] in, The far-field ring power ratio, The radius of the far-field ring of the turbulent effect satisfies the following condition: The ratio of the integrated power in the circular area with radius to the total far-field power is . , For wavelength, Focal length The length of atmospheric coherence. The far-field ring radius is determined by beam quality and mechanical jitter effects. The first turbulence scaling index, The second turbulence scaling index, It is the third turbulence scaling index.

[0023] In a specific embodiment of this application, the formula for calculating the far-field ring radius affected by the multiple effects is as follows:

[0024]

[0025] in, The far-field ring power ratio, For the far-field ring radius affected by multiple effects, satisfying the following: The ratio of the integrated power in the circular area with radius to the total far-field power is . , For thermal distortion parameters, The radius of the far-field ring of the turbulence effect. The far-field ring power radius of the diffraction effect. The first thermal halo scaling index, The second thermal halo scaling index, It is the third thermal halo scaling index. It is the fourth thermal halo scaling index. It is the fifth thermal halo scale index.

[0026] In a specific embodiment of this application, the formula for calculating the average light intensity of the far-field ring is as follows:

[0027]

[0028] in, The far-field ring power ratio, The far-field ring radius is affected by multiple effects. This represents the average light intensity around the far field. Atmospheric transmittance, This represents the total transmission power.

[0029] In specific embodiments of this application, the laser system parameters include total emission power, composite aperture, wavelength, mechanical jitter angle, sub-beam quality factor, spacing between adjacent sub-beam optical axes, number of sub-beam turns, overall beam fill factor, sub-beam fill factor, focal length, and effective sub-beam radius.

[0030] In a specific embodiment of this application, the effective radius of the sub-bundle is calculated based on the synthesis aperture, sub-bundle turns, overall fill factor, and sub-bundle fill factor in the parameters of the incoherent synthesis system.

[0031] In a specific embodiment of this application, the atmospheric environmental parameters include basic atmospheric environmental parameters and far-field integral parameters.

[0032] In a specific embodiment of this application, the basic atmospheric environmental parameters include atmospheric temperature, atmospheric absorption coefficient, atmospheric extinction coefficient, optical turbulence intensity, and lateral wind speed perpendicular to the optical path along the transmission path.

[0033] In a specific embodiment of this application, the far-field integration parameters include atmospheric transmittance, atmospheric coherence length, and thermal distortion parameters.

[0034] In specific embodiments of this application, the radius scaling index includes the diffraction scaling index, the jitter scaling index, the turbulence scaling index, and the thermal corona scaling index.

[0035] In a specific embodiment of this application, the radius scaling exponent is obtained from the atmospheric transmission scaling law model of incoherent synthesized beams.

[0036] In a specific embodiment of this application, the far-field surround power ratio The value range is 0.30-0.95.

[0037] The second objective of this application is to provide a system for calculating the far-field average light intensity of an incoherently synthesized beam, comprising:

[0038] Database module: used to obtain laser system parameters, atmospheric environment parameters, and radius scaling index;

[0039] The calculation module is used to calculate the far-field ring radius affected by multiple effects based on laser system parameters, atmospheric environment parameters, and radius scaling index; it is also used to calculate the far-field ring average light intensity based on laser system parameters, atmospheric environment parameters, and the far-field ring radius affected by multiple effects.

[0040] Compared with the prior art, this application has the following advantages:

[0041] This application discloses a method and system for calculating the far-field average light intensity of an incoherent synthesized beam. It takes into account the combined effects of beam quality, mechanical jitter, diffraction, turbulence, thermal coma, and attenuation in practical applications, and calculates the far-field average light intensity through laser system parameters, atmospheric environment parameters, and radius scaling index.

[0042] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A flowchart is shown for a method for calculating the far-field circumferential average intensity of an incoherent synthesized beam according to an embodiment of this application;

[0045] Figure 2 The light intensity distribution diagram of the incoherent synthesized beam source according to an embodiment of this application is shown;

[0046] Figure 3 A framework diagram of a far-field average light intensity calculation system for an incoherent synthesized beam according to an embodiment of this application is shown.

[0047] In the diagram: 10, Database module; 20, Calculation module. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] like Figure 1 As shown, a method for calculating the far-field average intensity of an incoherently synthesized beam according to certain embodiments of this application includes:

[0050] S1. Obtain laser system parameters, atmospheric environment parameters, and radius scaling index;

[0051] S2. Calculate the far-field circumference radius affected by multiple effects based on laser system parameters, atmospheric environment parameters, and radius scaling index;

[0052] S3. Calculate the average light intensity of the far-field ring based on the laser system parameters, atmospheric environment parameters, and the far-field ring radius affected by multiple effects.

[0053] In some embodiments of this application, in step S1, the laser system parameters are the laser system parameters in the incoherently combined beam, including the total emission power. Synthetic caliber ,wavelength Mechanical vibration angle Sub-beam quality factor Spacing between adjacent sub-beam optical axes Number of sub-bundles , bundle filler factor Sub-bundle fill factor ,focal length Effective radius of sub-bundle .

[0054] Among them, the effective radius of the sub-bundle Based on the synthesis aperture, number of sub-bundle turns, total bundle fill factor, and sub-bundle fill factor in the parameters of the incoherent synthesis system, calculations are performed. The number of sub-bundle turns is known to be... Ring beam, synthesizing aperture The expression is shown in equation (1), the entire bundle fill factor Sub-bundle filling factor The definitions are shown in formula group (2):

[0055] (1)

[0056]

[0057] The effective radius of the sub-bundle can be derived from equations (1) and (2). The calculation formula is detailed in equation (3):

[0058] (3)

[0059] Wherein, the effective radius of the sub-bundle It refers to a circle centered on the optical axis. Within a circular area of ​​radius , the integrated power accounts for 63.2% of the total sub-beam power. The diameter of the sub-bundle.

[0060] In some embodiments of this application, in step S1, the atmospheric environment parameters are the atmospheric environment parameters in the incoherently synthesized beam, and the atmospheric environment parameters include basic atmospheric environment parameters and far-field integral parameters.

[0061] The basic atmospheric environmental parameters include the distance along the transmission path. Atmospheric temperature Atmospheric absorption coefficient Atmospheric extinction coefficient Optical turbulence intensity Lateral wind speed perpendicular to the light path .

[0062] The far-field integral parameter includes atmospheric transmittance. Atmospheric coherence length and thermal distortion parameters The above far-field integral parameters are calculated based on the laser system parameters and basic atmospheric environmental parameters, and the specific formulas are shown in equations (4)-(6):

[0063] (4)

[0064] (5)

[0065] (6)

[0066] Calculate atmospheric transmittance based on (4)-(6) Atmospheric coherence length and thermal distortion parameters .

[0067] In some embodiments of this application, in step S1, the radius scaling index, including the diffraction scaling index, jitter scaling index, turbulence scaling index, and thermal corona scaling index, is obtained from the scaling law model of the atmospheric transmission extension radius of the incoherent synthesized beam.

[0068] In certain embodiments of this application, considering the effects of beam quality, mechanical jitter, diffraction, turbulence, thermal corona, and attenuation effects in the far field of an incoherently synthesized beam, the far-field encircling power ratio is... The meaning varies slightly under different effects, but its value is fixed;

[0069] Therefore, to facilitate understanding of the far-field ring power ratio The meaning of the far-field ring power ratio is... The far-field ring power ratio is divided into four categories: the far-field ring power ratio under diffraction effect (hereinafter referred to as the first far-field ring power ratio), the far-field ring power ratio under beam quality and mechanical jitter effect (hereinafter referred to as the second far-field ring power ratio), the far-field ring power ratio under turbulence effect (hereinafter referred to as the third far-field ring power ratio), and the far-field ring power ratio under the influence of multiple effects (hereinafter referred to as the fourth far-field ring power ratio).

[0070] In some embodiments of this application, step S2 includes:

[0071] S2-1. Calculate the far-field circumference radius of the diffraction effect based on the laser system parameters and the diffraction scaling index in the radius scaling index.

[0072] The first far-field ring power ratio is defined as the ratio of the integrated power to the total power of the far-field spot in a circular area centered on the centroid of the spot and with the radius of the far-field ring of the diffraction effect as the radius on the far-field spot distribution plane; the formula for calculating the far-field ring radius of the diffraction effect is shown in equation (7):

[0073] (7)

[0074] In equation (7), The far-field ring power ratio, The radius of the far-field ring of the diffraction effect. The first diffraction scaling index, This is the second diffraction scaling index. The third diffraction scaling index. Sub-bundle fill factor, For wavelength, Focal length Let be the effective radius of the sub-bundle.

[0075] S2-2. Based on the far-field encircling radius of the diffraction effect, calculate the beam quality and the far-field encircling radius of the mechanical jitter effect according to the laser system parameters and the jitter scaling index in the radius scaling index.

[0076] The second far-field ring power ratio is defined as the ratio of the integrated power to the total power of the far-field spot in a circular area centered on the spot centroid and with the radius of the far-field ring of beam quality and mechanical jitter effects as the radius on the far-field spot distribution plane.

[0077] The formula for calculating the beam quality and the far-field ring radius due to mechanical jitter effect is shown in equation (8):

[0078] (8)

[0079] In equation (8), The far-field ring power ratio, The far-field ring radius is determined by beam quality and mechanical jitter effects. For mechanical jitter angle, Focal length The radius of the far-field ring of the diffraction effect. The first jitter scaling index, The second jitter scaling index, The third jitter scaling index, This represents the sub-beam quality factor.

[0080] S2-3. Based on the far-field encircling radius of beam quality and mechanical jitter effect, calculate the far-field encircling radius of turbulence effect according to the far-field integral parameter in the laser system parameters and atmospheric environment parameters, and the turbulence scaling index in the radius scaling index.

[0081] The third far-field ring power ratio is defined as the ratio of the integrated power to the total power of the far-field spot in a circular area centered on the center of the spot and with the radius of the turbulent far-field ring on the far-field spot distribution plane.

[0082] The formula for calculating the far-field radius of the turbulence effect is shown in equation (9):

[0083] (9)

[0084] In equation (9), The far-field ring power ratio, The radius of the far-field ring of the turbulence effect. For wavelength, Focal length The length of atmospheric coherence. The far-field ring radius is determined by beam quality and mechanical jitter effects. The first turbulence scaling index, The second turbulence scaling index, It is the third turbulence scaling index.

[0085] S2-4. Based on the far-field encircling radius of the turbulence effect, calculate the far-field encircling radius of the multi-effect influence according to the far-field encircling radius of the diffraction effect, the far-field integral parameter in the atmospheric environmental parameters, and the thermal halo scaling index in the radius scaling index.

[0086] The fourth far-field ring power ratio is defined as the ratio of the integrated power to the total power of the far-field spot in a circular area centered on the spot centroid and with the radius of the far-field ring affected by multiple effects on the far-field spot distribution plane.

[0087] The formula for calculating the far-field circumference radius affected by the multiple effects is shown in equation (10):

[0088] (10)

[0089] In equation (10), The far-field ring power ratio, The far-field ring radius is affected by multiple effects. For thermal distortion parameters, The radius of the far-field ring of the turbulence effect. The far-field ring power radius of the diffraction effect. The first thermal halo scaling index, The second thermal halo scaling index, It is the third thermal halo scaling index. It is the fourth thermal halo scaling index. It is the fifth thermal halo scale index.

[0090] In some embodiments of this application, in step S5, the formula for calculating the average light intensity of the far-field ring is as shown in equation (11):

[0091] (11)

[0092] In equation (11), The far-field ring power ratio, The far-field ring radius is affected by multiple effects. The average light intensity of the far-field ring (represented as the average light intensity in the circular area centered on the centroid of the light spot and with the radius of the far-field ring affected by multiple effects as the radius on the far-field spot distribution plane). Atmospheric transmittance, This represents the total transmission power.

[0093] In some embodiments of this application, the far-field surround power ratio The value range is 0.30-0.95.

[0094] The average far-field intensity of the incoherent synthesized beam is calculated according to the method in the above embodiments. The specific process is as follows:

[0095] Obtain laser system parameters, atmospheric environmental parameters, and radius scaling index:

[0096] i. Obtain parameters of the incoherent combining beam laser system: based on the intensity distribution of the incoherent combining beam source (see details). Figure 2 Obtain the parameters of the incoherent combining system, specifically: total transmit power. Tiles, composite caliber meters, wavelength Meters, mechanical vibration angle radians, sub-beam quality factor Spacing between adjacent sub-beam optical axes Meter, number of sub-bundles , entire bundle of filler Sub-bundle filling factor ,focal length km;

[0097] The effective radius of the sub-bundle is calculated according to equation (3), and the result is as follows: ;

[0098] ii. Obtaining basic atmospheric environmental parameters for the atmospheric transmission of the incoherent synthesized beam: along the transmission path Atmospheric temperature Kelvin, atmospheric absorption coefficient rice -1 Atmospheric extinction coefficient rice -1 Optical turbulence intensity rice -2 / 3 Lateral wind speed perpendicular to the light path meters per second;

[0099] The atmospheric transmission far-field integral parameters of the incoherent synthesized beam are calculated according to equations (4)-(6). The results are: atmospheric transmittance. Atmospheric coherence length centimeters, thermal distortion parameters .

[0100] iii. Obtain the atmospheric transmission radius scaling index of the incoherent synthesized beam: The diffraction scaling index value is: First diffraction scaling index Second diffraction scaling index Third diffraction scaling index The jitter scaling index value is: First jitter scaling index Second jitter scaling index Third jitter scaling index The turbulence scaling index is: First turbulence scaling index Second turbulence scaling index The third turbulence scaling index The thermal corona scaling index value is: First thermal corona scaling index Second thermal halo scaling index Third thermal halo scaling index Fourth thermal halo scaling index Fifth thermal halo scaling index .

[0101] The ring power ratio is taken as: .

[0102] calculate:

[0103] Based on laser system parameters, atmospheric environment parameters, and radius scaling index, the far-field radius of influence from multiple effects is calculated:

[0104] Substituting the laser system parameters and diffraction scaling index obtained above into equation (7), the calculated result of the far-field encircling radius of the diffraction effect is: rice;

[0105] The above results Substituting the laser system parameters and jitter scaling index into equation (8), the calculated results of beam quality and far-field ring radius due to mechanical jitter effect are as follows: rice;

[0106] The above results Substituting the laser system parameters, atmospheric coherence length, and turbulence scaling index into equation (9), the calculated far-field encircling radius of the turbulence effect is: rice;

[0107] The far-field ring radius of the diffraction effect obtained above turbulence effect far-field radius Thermal distortion parameters Substituting the thermal scaling index into equation (10), the calculated result of the far-field circumference radius affected by multiple effects is: rice.

[0108] The far-field ring radius is calculated based on laser system parameters, atmospheric environment parameters, and the influence of multiple effects.

[0109] The above-obtained ring power ratio Total transmission power Tiles, far-field radius Meters and atmospheric transmittance Substituting into equation (11), the calculated result of the far-field ring average light intensity is: Tiles per square meter.

[0110] like Figure 3 As shown, a far-field average light intensity calculation system for an incoherently synthesized beam according to certain embodiments of this application includes:

[0111] Database module 10: Used to obtain laser system parameters, atmospheric environment parameters, and radius scaling index;

[0112] Calculation module 20: Calculates the far-field ring radius affected by multiple effects based on laser system parameters, atmospheric environment parameters, and radius scaling index; it is also used to calculate the far-field ring average light intensity based on laser system parameters, atmospheric environment parameters, and the far-field ring radius affected by multiple effects.

[0113] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for calculating the far field average light intensity of a non-coherent combined light beam, characterized in that, The method comprises the following steps: acquiring laser system parameters, atmospheric environment parameters and radius scale indexes; calculating a far-field encircled radius affected by multiple effects based on the laser system parameters, the atmospheric environment parameters and the radius scale indexes, which comprises the following steps: calculating a far-field encircled radius affected by diffraction effects according to a diffraction scale index in the radius scale indexes and the laser system parameters; calculating a far-field encircled radius affected by beam quality and mechanical jitter effects according to a jitter scale index in the radius scale indexes and the laser system parameters, based on the far-field encircled radius affected by diffraction effects; calculating a far-field encircled radius affected by turbulence effects according to a turbulence scale index in the radius scale indexes and far-field integral parameters in the atmospheric environment parameters, based on the far-field encircled radius affected by beam quality and mechanical jitter effects; calculating a far-field encircled radius affected by multiple effects according to the far-field encircled radius affected by turbulence effects, the far-field integral parameters in the atmospheric environment parameters and a thermal blooming scale index in the radius scale indexes, based on the far-field encircled radius affected by diffraction effects; calculating a far-field encircled average light intensity based on the laser system parameters, the atmospheric environment parameters and the far-field encircled radius affected by multiple effects. The formula for calculating the far-field encircled radius affected by diffraction effects is as follows: wherein, is the far field encircled power ratio, is the far field encircled radius of the diffraction effect, satisfying is the ratio of the integrated power in a circular surface of radius to the total far field power, , is the first diffraction scaling index, is the second diffraction scaling index, is the third diffraction scaling index, is the sub-beam fill factor, is the wavelength, is the focal length, is the sub-beam effective radius; The formula for calculating the far-field encircled radius affected by beam quality and mechanical jitter effects is as follows: wherein is the far field encircled radius of the beam quality and the mechanical jitter effect, satisfying is the ratio of the integrated power in a circular surface of radius to the total power in the far field , is the mechanical jitter angle, is the focal length, is the far field encircled radius of the diffraction effect, is the first jitter scaling exponent, is the second jitter scaling exponent, is the third jitter scaling exponent, is the beam quality factor of the sub-beam; The formula for calculating the far-field encircled radius affected by turbulence effects is as follows: wherein is the far field radius of the turbulence effect, satisfying is the ratio of the integrated power in a circular surface of radius to the total power in the far field , is the wavelength, is the focal length, is the atmospheric coherence length, is the first turbulence scaling exponent, is the second turbulence scaling exponent, is the third turbulence scaling exponent; The formula for calculating the far-field encircled radius affected by multiple effects is as follows: wherein is the far field circumference radius for the multiple effect influence, satisfying is the ratio of the integrated power in a circular surface of radius , is the thermal distortion parameter, is the first thermal halo scaling exponent, is the second thermal halo scaling exponent, is the third thermal halo scaling exponent, is the fourth thermal halo scaling exponent, is the fifth thermal halo scaling exponent; The formula for calculating the far-field encircled average light intensity is as follows: wherein, is the far field encircled mean light intensity, is the atmospheric transmittance, is the total emitted power.

2. The method of claim 1, wherein, The laser system parameters comprise total emission power, synthetic aperture, wavelength, mechanical jitter angle, beam quality factor of sub-beams, distance between optical axes of adjacent sub-beams, number of sub-beam circles, filling factor of whole beam, filling factor of sub-beams, focal length and effective radius of sub-beams. And / or, the effective radius of sub-beams is calculated according to the synthetic aperture, the number of sub-beam circles, the filling factor of whole beam and the filling factor of sub-beams in the non-coherent synthesis system parameters. And / or, the atmospheric environment parameters comprise atmospheric environment basic parameters and far-field integral parameters. And / or, the atmospheric environment basic parameters comprise atmospheric temperature, atmospheric absorption coefficient, atmospheric extinction coefficient, optical turbulence intensity and transverse wind speed perpendicular to the optical path on the transmission path. The far-field integral parameters comprise atmospheric transmissivity, atmospheric coherence length and thermal distortion parameter.

3. The method of claim 1, wherein, The radius scale indexes comprise diffraction scale index, jitter scale index, turbulence scale index and thermal blooming scale index. And / or, the radius scale indexes are obtained from a non-coherent synthesis beam atmospheric transmission scale law model.

4. A system for calculating the far field average light intensity of a non-coherent combined light beam, characterized in that The method for calculating the far-field average light intensity of a non-coherent synthesis beam according to claim 1 comprises the following steps: a database module for acquiring laser system parameters, atmospheric environment parameters and radius scale indexes; a calculation module for calculating a far-field encircled radius affected by multiple effects based on the laser system parameters, the atmospheric environment parameters and the radius scale indexes, and for calculating a far-field encircled average light intensity based on the laser system parameters, the atmospheric environment parameters and the far-field encircled radius affected by multiple effects.

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