A radiation source traceability correction method and device based on oxygen absorption loss and a storage medium

Abstract

The application discloses a radiation source tracing correction method and device based on oxygen absorption loss and a storage medium, and comprises the following steps: calculating an oxygen absorption loss value Lo2 in a detection distance h from a radiation source; correcting a dipole moment of an equivalent electric dipole of the radiation source by using the obtained oxygen absorption loss value; and predicting environmental radiation based on the dipole moment of the corrected equivalent electric dipole. According to the oxygen absorption loss and the dipole moment of the equivalent electric dipole under the premise that the detection distance is known, the dipole moment of the equivalent electric dipole of the radiation source is corrected, so that the prediction of the environmental radiation based on the corrected dipole moment is more accurate.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic environment measurement technology, and more specifically, to a method, device, and storage medium for radiation source tracing and correction based on oxygen absorption loss. Background Technology

[0002] In electromagnetic environment testing and other research, it is often impossible to get close to the radiation source to directly obtain radiation source information. Instead, data can only be obtained by conducting distance tests at different distances to trace and model the radiation source information.

[0003] The typical testing environment is in the atmosphere, not a vacuum. As a medium, the atmosphere absorbs electromagnetic waves, resulting in absorption loss. Currently, radiation source tracing techniques are primarily based on assumed free-space conditions, without considering the impact of atmospheric absorption. As the distance increases, the absorption loss from the atmosphere, especially oxygen, gradually increases, and oxygen's absorption of electromagnetic waves is mainly concentrated around 60 GHz. Summary of the Invention

[0004] Therefore, in response to at least one of the above-mentioned defects or improvement needs of the prior art, this invention proposes a radiation source tracing correction method based on oxygen absorption loss. The method can calculate the oxygen absorption loss during the electromagnetic wave propagation process based on parameters such as the distance between the radiation source and the electromagnetic environment test location, and apply the calculation results to the radiation source for tracing modeling correction.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a method for radiation source tracing and correction based on oxygen absorption loss is provided, the method comprising:

[0006] At a detection distance h from a radiation source, calculate the oxygen absorption loss value Lo2 during the radiation process;

[0007] The obtained oxygen absorption loss value is used to correct the dipole moment of the equivalent electric dipole of the radiation source;

[0008] Environmental radiation is predicted based on the dipole moment of the corrected equivalent electric dipole.

[0009] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0010] The method for calculating the oxygen absorption loss value Lo2 is as follows:

[0011] Obtain the detection distance h and the electromagnetic wave frequency f radiated by the radiation source;

[0012]

[0013] ξo2(h)=2.0058PT -3 f 2 ∑A N (dB / km);

[0014] Where: h is the detection distance, P is the air pressure, T is the temperature, and f is the frequency of the electromagnetic wave radiated by the radiation source.

[0015]

[0016] in

[0017] For positive eigenvalues, These are negative eigencomponents, and N ranges from 1 to ∞.

[0018] e n =2.06844N(N+1), μ 2 N0 is the intrinsic component, e n For exponential coefficients;

[0019] The non-resonant component is:

[0020]

[0021] The shape function of the resonant line is:

[0022]

[0023] In the formula, Δf = 0.1895g(h)P / T; g(h) is the altitude factor, F N± It is the resonant frequency.

[0024] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0025] The correction method for the dipole moment of the equivalent electric dipole is to use the product of the dipole moment of the radiation source's equivalent electric dipole and the absorption loss value Lo2 raised to the power of 1 / 2 as the actual dipole moment of the equivalent electric dipole.

[0026] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0027] The prediction of environmental radiation is characterized by energy flux density.

[0028] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0029] The energy flux density is calculated as follows:

[0030]

[0031] Where p is the dipole moment of the equivalent electric dipole of the radiation source, p' is the actual dipole moment of the equivalent electric dipole, and sin 2 θ is the angular distribution of electromagnetic dipole radiation, c is the speed of light in vacuum, ε0 is the magnetic permeability of vacuum, π is pi, and h is the detection distance.

[0032] According to a second aspect of the present invention, a radiation source tracing and correction device based on oxygen absorption loss is also provided, comprising at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program that, when executed by the processing unit, causes the processing unit to perform the steps of any of the methods described above.

[0033] According to a third aspect of the invention, a storage medium is also provided, which stores a computer program executable by an access authentication device, which, when run on the access authentication device, causes the access authentication device to perform the steps of any of the methods described above.

[0034] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0035] This invention provides a radiation source tracing correction method based on oxygen absorption loss. In the field of radiation source tracing modeling and environmental prediction, for a certain detection distance, the dipole moment of the equivalent electric dipole of the radiation source is corrected according to the oxygen absorption loss and the dipole moment of the equivalent electric dipole, so that the prediction of environmental radiation based on the corrected dipole moment is more accurate. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart illustrating the radiation source tracing and correction method based on oxygen absorption loss implemented according to the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0039] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0040] To achieve the above objectives, according to a first embodiment of the present invention, a method for radiation source tracing and correction based on oxygen absorption loss is provided, the method comprising:

[0041] At a detection distance h from a radiation source, calculate the oxygen absorption loss value Lo2 during the radiation process;

[0042] The obtained oxygen absorption loss value is used to correct the dipole moment of the equivalent electric dipole of the radiation source;

[0043] Environmental radiation is predicted based on the dipole moment of the corrected equivalent electric dipole.

[0044] This invention provides a radiation source tracing correction method based on oxygen absorption loss. Under the premise of known detection distance, the method corrects the dipole moment of the equivalent electric dipole of the radiation source according to the oxygen absorption loss and the dipole moment of the equivalent electric dipole, so that the prediction of environmental radiation based on the corrected dipole moment is more accurate.

[0045] Furthermore, the radiation source tracing correction method based on oxygen absorption loss provided by the present invention includes:

[0046] Obtain the detection distance h and the electromagnetic wave frequency f radiated by the radiation source;

[0047] Given a measurement distance h and a frequency f, the expression for the absorption coefficient of oxygen for an electromagnetic wave of a certain frequency f is:

[0048] ξo2(h)=2.0058PT -3 f 2 ∑A N (dB / km)

[0049] Where: h is the detection distance, P is the air pressure, T is the temperature, and f is the frequency of the electromagnetic wave radiated by the radiation source.

[0050]

[0051] in

[0052] For positive eigenvalues, These are negative eigencomponents, and N ranges from 1 to ∞.

[0053] e n =2.06844N(N+1), μ 2 N0 is the intrinsic component, e n For exponential coefficients;

[0054] The non-resonant component is:

[0055]

[0056] The shape function of the resonant line is:

[0057]

[0058] In the formula, Δf = 0.1895g(h)P / T; g(h) is the altitude factor, F N± It is the resonant frequency.

[0059] Therefore, the absorption loss during the entire radiation process is:

[0060]

[0061] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0062] The correction method for the dipole moment of the equivalent electric dipole is to use the product of the dipole moment of the radiation source's equivalent electric dipole and the absorption loss value Lo2 raised to the power of 1 / 2 as the actual dipole moment of the equivalent electric dipole.

[0063] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0064] The prediction of environmental radiation is characterized by energy flux density.

[0065] Furthermore, the aforementioned radiation source tracing correction method based on oxygen absorption loss also includes:

[0066] According to classical electrodynamics, the energy flux density formula is as follows:

[0067] in

[0068] sin 2 θ represents the angular distribution of electromagnetic dipole radiation, c is the speed of light in vacuum, ε0 is the magnetic permeability of vacuum, π is pi, and h is the detection distance. In this study, all of the above parameters can be considered constants, and p represents the dipole moment of the equivalent electric dipole of the radiation source. This formula describes propagation in free space, therefore the effect of oxygen absorption loss is not considered.

[0069] Let p′ be the dipole moment of the actual equivalent electric dipole. Taking into account the absorption loss Lo2, we obtain the corrected energy flux density in the following equation:

[0070]

[0071] Where p is the dipole moment of the equivalent electric dipole of the radiation source, and p' is the dipole moment of the actual equivalent electric dipole.

[0072] Based on the first embodiment described above, the present invention further provides a radiation source tracing and correction method based on oxygen absorption loss in a specific application scenario.

[0073] Assuming an electromagnetic environment monitoring point is 200 km away from the radiation source, the detection frequency is 59.8 GHz, P is 1 atmosphere, and T is 300 kJ, the oxygen absorption loss Lo2 can be obtained according to the method in the first embodiment:

[0074]

[0075] Converted to a linear scale, this is 1.05, and the square root is approximately 1.0245. That is, the corrected electric dipole moment is 1.0245 times the original electric dipole moment.

[0076] According to a second aspect of the present invention, a radiation source tracing and correction device based on oxygen absorption loss is also provided, comprising at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program that, when executed by the processing unit, causes the processing unit to perform the steps of any of the methods described above.

[0077] According to a third aspect of the invention, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the method described above. The computer-readable storage medium may include, but is not limited to, any type of disk, including floppy disks, optical disks, DVDs, CD-ROMs, microdrives, as well as magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic cards or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0078] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A radiation source tracing and correction method based on oxygen absorption loss, characterized in that, The above method includes the following steps: At a detection distance h from a radiation source, calculate the oxygen absorption loss value Lo2 during the radiation process; The obtained oxygen absorption loss value is used to correct the dipole moment of the equivalent electric dipole of the radiation source; Environmental radiation is predicted based on the dipole moment of the corrected equivalent electric dipole; the prediction of environmental radiation is characterized by energy flux density. The energy flux density is calculated as follows: ； in p The dipole moment of the equivalent electric dipole of the radiation source. p’ For the actual equivalent electric dipole's dipole moment, Let be the angular distribution of electromagnetic dipole radiation, and c be the speed of light in vacuum. The permeability of vacuum. Pi The detection distance is [the distance].

2. The radiation source tracing and correction method based on oxygen absorption loss according to claim 1, characterized in that, The method for calculating the oxygen absorption loss value Lo2 is as follows: Obtain the detection distance h and the electromagnetic wave frequency f radiated by the radiation source; ； ； Where: h is the detection distance, P is the air pressure, T is the temperature, and f is the frequency of the electromagnetic wave radiated by the radiation source. ； in For positive eigenvalues, These are negative eigencomponents, and N ranges from 1 to ∞. μ 2 N0 is the intrinsic component, e n For exponential coefficients; The non-resonant component is: The shape function of the resonant line is: In the formula, ; g(h) is the height factor, F N± It is the resonant frequency.

3. The radiation source tracing and correction method based on oxygen absorption loss according to claim 1, characterized in that, Also includes: The correction method for the dipole moment of the equivalent electric dipole is to use the product of the dipole moment of the radiation source's equivalent electric dipole and the absorption loss value Lo2 raised to the power of 1 / 2 as the actual dipole moment of the equivalent electric dipole.

4. A radiation source tracing and correction device based on oxygen absorption loss, characterized in that, It includes at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program that, when executed by the processing unit, causes the processing unit to perform the steps of the method according to any one of claims 1 to 3.

5. A computer-readable storage medium, characterized in that, It stores a computer program executable by an access authentication device, which, when run on the access authentication device, causes the access authentication device to perform the steps of the method according to any one of claims 1 to 3.

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