Environmental disturbance-oriented atomic clock frequency estimation model and dynamic correction method

Abstract

The invention discloses an environmental disturbance-oriented atomic clock frequency estimation model and a dynamic correction method, and the model refines the influence of environmental disturbance (such as temperature, humidity and interaction) on atomic clock frequency deviation on the basis of a conventional atomic clock data model, and integrates the influence into the frequency estimation model, so that the frequency deviation of the atomic clock is estimated. The method is used for describing frequency change under environment disturbance. According to the method, temperature and humidity data are combined, the frequency offset is calculated through the fitted model parameters, the atomic clock frequency is corrected, and the method is suitable for a real-time dynamic adjustment system and can also be used for compensation analysis of post data. Compared with a traditional model, the method can effectively compensate the influence of the independent effect of temperature and humidity and the interaction effect on the atomic clock, improves the frequency correction precision and stability, and improves the performance reliability of the atomic clock in a complex environment. The method is widely suitable for high-precision time synchronization, frequency measurement and time frequency research in a complex environment, and provides technical support for high-performance time reference application.

Description

Technical Field

[0001] The present invention belongs to the technical field of time frequency measurement and analysis, and in particular relates to an atomic clock frequency estimation model and a dynamic correction method facing environmental disturbances. Background Art

[0002] As a high-precision time and frequency reference device, the performance of atomic clocks is highly sensitive to disturbances from environmental factors, especially in complex or dynamic environments, where fluctuations in external factors (such as temperature and humidity) can significantly interfere with the frequency. This interference is mainly manifested in the following aspects: 1) Temperature disturbance: Temperature changes cause thermal expansion of cavity materials, changes in buffer gas pressure, optical frequency shift effects, and hardware performance drift, resulting in a shift in atomic transition frequency. This drift not only affects short-term stability, but may also accumulate into long-term errors.

[0003] 2) Humidity disturbance: Humidity affects the collision characteristics between buffer gas and atoms by changing the composition or pressure of the gas in the environment, further leading to changes in frequency.

[0004] 3) Temperature and humidity interaction: Temperature and humidity may produce complex nonlinear coupling effects in a dynamic environment. For example, high humidity and low temperature conditions may cause cavity condensation, further exacerbating frequency drift.

[0005] At present, traditional atomic clock data models usually assume that the external environment is constant or simply consider the linear influence of a single environmental factor. This makes the atomic clock data determined based on the traditional atomic clock data model unable to meet the accuracy requirements of key applications (such as satellite navigation and deep space exploration) in high dynamic environments. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, the present invention provides an atomic clock frequency estimation model and a dynamic correction method oriented to environmental disturbances.

[0007] The technical problem to be solved by the present invention is achieved through the following technical solutions: The present invention provides an atomic clock frequency estimation model facing environmental disturbances, wherein the atomic clock frequency estimation model facing environmental disturbances comprises an atomic clock data model and a total frequency offset model of the atomic clock under environmental disturbances, and the atomic clock frequency estimation model facing environmental disturbances is used to characterize the atomic clock data under environmental disturbances, including the atomic clock data not affected by environmental disturbances and the total frequency offset of the atomic clock under environmental disturbances; The total frequency offset model of the atomic clock under environmental disturbance includes: a frequency offset model of the atomic clock caused by temperature, a frequency offset model of the atomic clock caused by humidity, and a frequency offset model of the atomic clock caused by the interaction of temperature and humidity.

[0008] The present invention also provides a dynamic correction method based on an atomic clock frequency estimation model oriented to environmental disturbances, comprising: Acquire environmental parameters at multiple different moments, and atomic clock data under the disturbance of the environmental parameters at each of the multiple different moments; Determine the model coefficients in the atomic clock frequency estimation model facing environmental disturbance according to the environmental parameters at the multiple different moments and the atomic clock data under the disturbance of the environmental parameters at each moment, and obtain the atomic clock frequency estimation model to be used; The atomic clock frequency estimation model facing environmental disturbances includes an atomic clock data model and a total frequency offset model of the atomic clock under environmental disturbances, and the atomic clock frequency estimation model facing environmental disturbances is used to characterize the atomic clock data under environmental disturbances, including the atomic clock data not affected by environmental disturbances and the total frequency offset of the atomic clock under environmental disturbances; the total frequency offset model of the atomic clock under environmental disturbances includes: a frequency offset model of the atomic clock caused by temperature, a frequency offset model of the atomic clock caused by humidity, and a frequency offset model of the atomic clock caused by the interaction of temperature and humidity; According to the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment, the atomic clock data not disturbed by the environment at each moment is estimated by using the atomic clock frequency estimation model to be used.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1) The atomic clock data model proposed in this paper integrates the nonlinear effects of temperature, humidity and their interactions on frequency offset on the basis of the traditional model. Through the detailed description of environmental disturbances, the frequency changes in complex dynamic environments can be effectively compensated, thereby greatly improving the stability and accuracy of atomic clock data.

[0010] 2) The dynamic correction method proposed in the present invention estimates the atomic clock data based on the atomic clock frequency estimation model oriented to environmental disturbances, which can effectively compensate for the influence of temperature and humidity alone and their interaction on the atomic clock. Therefore, it is possible to estimate the atomic clock data with high frequency stability and high accuracy, greatly improving the frequency stability, reliability and dynamic environmental adaptability of the atomic clock in a complex dynamic environment.

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a curve diagram showing the relationship between the frequency offset of the atomic clock provided by an embodiment of the present invention and the changes in temperature and humidity; Figure 2 It is a flow chart of a dynamic correction method based on an atomic clock frequency estimation model oriented to environmental disturbances provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0014] Traditional atomic clock data models usually assume that the external environment is constant, or only consider the linear influence of a single environmental factor (such as temperature), and fail to refine the complex interaction of temperature and humidity. This assumption makes it difficult for frequency estimation and correction methods based on traditional atomic clock data models to meet the requirements for accuracy and stability in highly dynamic environments (such as satellite navigation and deep space exploration). Based on this, the present invention proposes an atomic clock frequency estimation model and dynamic correction method for environmental disturbances. By refining the description of environmental disturbances, the frequency changes in complex dynamic environments can be effectively compensated, thereby greatly improving the frequency stability and reliability of atomic clocks in complex environments.

[0015] The present invention provides an atomic clock frequency estimation model for environmental disturbances. The model combines the nonlinear effects of environmental disturbances (such as temperature, humidity and their interactions) on the frequency of the atomic clock on the basis of the traditional atomic clock data model, specifically including the effects of temperature on the frequency offset of the atomic clock, the effects of humidity on the frequency offset of the atomic clock, and the effects of the interaction of temperature and humidity on the frequency offset of the atomic clock. The model is used to characterize that the atomic clock data under environmental disturbances includes the undisturbed atomic clock data part and the frequency offset part caused by the environmental disturbance. By integrating the effects of environmental disturbances into the atomic clock data model, the present invention can achieve a comprehensive description and accurate compensation of the atomic clock frequency offset in a complex environment. Specifically, the atomic clock frequency estimation model for environmental disturbances includes an atomic clock data model and a total frequency offset model of the atomic clock under environmental disturbances, and the atomic clock frequency estimation model for environmental disturbances is used to characterize the atomic clock data under environmental disturbances, including the atomic clock data not affected by environmental disturbances and the total frequency offset of the atomic clock under environmental disturbances; wherein the total frequency offset model of the atomic clock under environmental disturbances includes: a frequency offset model of the atomic clock caused by temperature, a frequency offset model of the atomic clock caused by humidity, and a frequency offset model of the atomic clock caused by the interaction of temperature and humidity.

[0016] For example, the expression of the total frequency offset of the atomic clock under environmental disturbance is as follows: ; in, is the total frequency offset model of the atomic clock under environmental disturbances, is the frequency offset model caused by temperature, is the frequency shift model caused by humidity, It is the frequency offset of the atomic clock caused by the interaction of temperature and humidity; is the nominal frequency of the atomic clock, Refers to the actual frequency deviation value caused by environmental factors (such as temperature, humidity, etc.). Represents the static effect coefficient of temperature on frequency deviation; It represents the dynamic effect coefficient of frequency shift caused by instantaneous temperature change. is the real-time temperature, is the reference temperature, represents the time derivative of temperature change (i.e. temperature change rate), is the linear shift coefficient caused by humidity, The coefficient representing the nonlinear quadratic drift effect caused by humidity, is the real-time humidity, is the base humidity, is a coefficient used to describe the frequency offset caused by the interaction between temperature and humidity. Obviously, the total frequency offset model of the atomic clock under environmental disturbance combines the static compensation and instantaneous compensation of temperature, the nonlinear compensation effect of humidity, and the interaction between temperature and humidity. It should be noted that when the type of atomic clock is different, the and Different, therefore, and It can be set according to the type of atomic clock required.

[0017] Exemplarily, the expression of the atomic clock frequency estimation model facing environmental disturbance is as follows: ; in, is the atomic clock data model, For time, is the initial time difference, is the initial frequency difference, is the linear frequency drift, is random noise, and Characterizes atomic clock data when it is not disturbed by the environment, is the total frequency offset model of the atomic clock under environmental disturbances, and, Characterizes the total frequency deviation of the atomic clock under environmental disturbances, Characterize atomic clock data under environmental perturbations, specifically, Characterizes the phase offset of an atomic clock under environmental disturbances.

[0018] In order to realize dynamic correction of atomic clock frequency in complex environment, the atomic clock frequency estimation model for environmental disturbance proposed in the present invention is constructed based on the influence mechanism of temperature, humidity and their interaction on atomic clock frequency. The theoretical basis of formula derivation is described in detail below.

[0019] First, the typical atomic clock model (i.e. the atomic clock data model mentioned above) can be expressed as the formula: .

[0020] Secondly, it is necessary to consider the combined impact of temperature and humidity on the frequency deviation of the atomic clock.

[0021] 1) The effect of temperature on the frequency of atomic clocks mainly comes from the following physical mechanisms: (1) Thermal expansion effect of cavity The cavity material of the atomic clock (such as quartz or metal) will expand with temperature changes, changing the geometric dimensions of the cavity, thereby affecting the field distribution and atomic transition frequency in the cavity. According to the thermal expansion theory, the frequency offset of the atomic clock is It is approximately linearly related to the change in temperature, as shown in the following figure: ,in, Indicates direct proportion.

[0022] When the temperature of the atomic clock cavity material changes rapidly, it will produce a delayed response due to thermal inertia. This hysteresis causes short-term disturbances in the cavity size, geometric characteristics, and internal electromagnetic field distribution, causing dynamic changes in frequency offset. The rate of change of the cavity geometry is proportional to the rate of change of temperature, and the frequency offset of the atomic clock is proportional to the temperature. Related to the rate of change of cavity size: ,in, Indicates the cavity size, represents the cavity size change rate, Indicates the rate of temperature change.

[0023] (2) Optical frequency shift effect The optical frequency shift is caused by the influence of the light field on the atomic energy level, and its shift depends on the combined effect of the light field intensity and temperature change on the atomic transition frequency. The temperature dependence of the optical frequency shift further causes the drift of the transition frequency.

[0024] Combining the above effects, the frequency offset under the influence of temperature is It can be modeled as: .

[0025] 2) Humidity mainly affects the frequency of atomic clocks by changing the composition and pressure of the buffer gas, specifically in the following two aspects: (1) Buffer gas collision frequency shift The change of humidity will change the partial pressure of buffer gas, affect the collision characteristics between atoms and buffer gas atoms, and then cause frequency drift. According to the gas kinetic theory, the frequency offset The relationship with humidity is nonlinear: and When the temperature changes greatly, the nonlinear effect of thermal expansion cannot be ignored and manifests itself as a quadratic nonlinear term.

[0026] (2) Cavity condensation effect Under high humidity conditions, the cavity may produce a condensation effect, which will further change the gas distribution in the cavity and the reflection characteristics of the cavity wall, affecting the atomic transition frequency.

[0027] Therefore, the frequency shift under the influence of humidity is It can be modeled as: .

[0028] 3) There is a significant interaction between temperature and humidity, which is mainly manifested in the following aspects: (1) Amplification of the temperature effect on humidity: Increased temperature increases the molecular motion rate of the buffer gas, amplifying the effect of humidity on the atomic transition frequency.

[0029] (2) Enhancement of the temperature effect by humidity: Humidity changes may change the thermal conductivity or optical properties of the cavity, thereby amplifying the frequency drift caused by temperature.

[0030] Therefore, the frequency offset under the interaction of temperature and humidity is It can be modeled by the first-order interaction term: . For example, Figure 1 This is a curve showing the relationship between the frequency offset of the atomic clock and the changes in temperature and humidity. Figure 1 In the chart, the horizontal axis is time, in hours, the vertical axis on the left is frequency offset Atomic Clock Data, in ns, the first vertical axis on the right is humidity, in %, and the second vertical axis on the right is temperature, in degrees Celsius. In addition, Figure 1 The red solid line is the changing curve of the frequency offset of the atomic clock, the blue dotted line is the changing curve of humidity, and the background area composed of purple, red and yellow represents the change of temperature. The temperature represented by yellow is higher than that represented by red, and the temperature represented by red is higher than that represented by purple.

[0031] 4) Comprehensive frequency offset model Based on the above three effects, the total frequency offset of the atomic clock affected by temperature and humidity can be expressed as: .

[0032] Combining the typical atomic clock model and the total frequency offset model, the atomic clock frequency estimation model for environmental disturbance proposed in the present invention is: The model captures both the independent effects of temperature and humidity and their interactive effects, has strong physical interpretation and applicability, and can accurately describe the frequency offset in complex dynamic environments.

[0033] The present invention also provides a dynamic correction method based on an atomic clock frequency estimation model oriented to environmental disturbances, such as Figure 2 As shown, the method includes: S101, acquiring environmental parameters at multiple different moments, and atomic clock data under the disturbance of the environmental parameters at each of the multiple different moments.

[0034] It should be noted that the environmental parameters include temperature and humidity. The temperature and humidity at each moment are the temperature and humidity collected at that moment. The atomic clock data under the disturbance of the environmental parameters at each moment are the atomic clock data output at that moment by the atomic clock under the disturbance of the temperature and humidity at that moment. Exemplarily, the temperature and humidity are the temperature and humidity after filtering (e.g., low-pass filtering), so as to eliminate the influence of sensor noise on the model accuracy.

[0035] Exemplarily, the multiple different moments may be consecutive moments, and the interval between two adjacent moments may be set arbitrarily, for example, 3 minutes or 10 minutes, etc., which is not limited in the present invention.

[0036] S102, determining model coefficients in an atomic clock frequency estimation model oriented to environmental disturbances according to environmental parameters at multiple different moments and atomic clock data under the disturbance of environmental parameters at each moment, and obtaining an atomic clock frequency estimation model to be used.

[0037] It should be noted that the atomic clock frequency estimation model for environmental disturbances has been introduced in detail above, so it will not be repeated here.

[0038] S103 , based on the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment, the atomic clock frequency estimation model to be used is used to estimate the atomic clock data at each moment that is not disturbed by the environment.

[0039] In some embodiments, the model coefficients in the atomic clock frequency estimation model for environmental disturbances include: static effect coefficients of temperature on frequency offset , Dynamic effect coefficient of frequency shift caused by instantaneous temperature change , Linear offset coefficient caused by humidity , the coefficient of the nonlinear quadratic drift effect caused by humidity , used to describe the coefficient of frequency shift caused by temperature and humidity interaction Based on this, the above S102 is implemented by the following steps: S1021, substituting the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment into the atomic clock frequency estimation model facing environmental disturbance, to obtain , , , and Multiple equations with unknown variables.

[0040] For example, when there are five different moments, we can get five equations corresponding to these five moments.

[0041] S1022, fitting according to multiple equations , , , and The value of , , , and Substitute the value of into the atomic clock frequency estimation model for environmental disturbance to obtain the atomic clock frequency estimation model to be used.

[0042] For example, the least squares method can be used to fit these equations. , , , and The value of .

[0043] In some embodiments, the above S103 is implemented by the following steps: S1031. Using the total frequency offset model of the atomic clock under environmental disturbance in the atomic clock frequency estimation model to be used, calculate the total frequency offset of the atomic clock under the disturbance of the environmental parameters at each moment according to the temperature and humidity at that moment.

[0044] S1032. Subtract the atomic clock data under the disturbance of the environmental parameters at that moment from the total frequency offset of the atomic clock under the disturbance of the environmental parameters at that moment, and use the obtained difference as the estimated atomic clock data at that moment that is not disturbed by the environment.

[0045] In some embodiments, the last moment among the above-mentioned multiple different moments is the current moment, and the remaining moments among the above-mentioned multiple different moments are different moments before the current moment. Therefore, through the dynamic correction method provided by the present invention, the output atomic clock data can be corrected in real time, and the specific process of the real-time correction is: after obtaining the environmental parameters at the current moment and the atomic clock data under the disturbance of the environmental parameters at the current moment, the environmental parameters at the current moment, the atomic clock data under the disturbance of the environmental parameters at the current moment, the environmental parameters obtained at each moment before the current moment, and the atomic clock data under the disturbance of the environmental parameters at each moment before the current moment are used to correct the atomic clock frequency estimation model facing environmental disturbances. , , , and The value of is fitted to obtain the atomic clock frequency estimation model at the current moment. Then, the atomic clock frequency estimation model at the current moment is used to estimate the atomic clock data not disturbed by the environment at the current moment according to the environmental parameters at the current moment and the atomic clock data under the disturbance of the environmental parameters at the current moment.

[0046] In some embodiments, the above-mentioned multiple different moments are multiple historical moments with a chronological order. Therefore, through the dynamic correction method provided by the present invention, the output atomic clock data can be post-corrected, and the specific process of the post-correction is: when it is necessary to post-correct the atomic clock data at certain moments, according to the environmental parameters of these moments and the atomic clock data under the disturbance of the environmental parameters at each of these moments, the atomic clock frequency estimation model facing the environmental disturbance is corrected. , , , and The value of is fitted to obtain an atomic clock frequency estimation model. Then, this atomic clock frequency estimation model is used to estimate the atomic clock data not disturbed by the environment at each of these moments according to the environmental parameters at each of these moments and the atomic clock data under the disturbance of the environmental parameters at that moment.

[0047] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0049] In the specification, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality of components. Certain measures are recorded in different embodiments, but this does not mean that these measures cannot be combined to produce good effects.

[0050] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An atomic clock frequency estimation model for environmental disturbances, characterized in that: The atomic clock frequency estimation model for environmental disturbances includes an atomic clock data model and a total frequency offset model of the atomic clock under environmental disturbances, and the atomic clock frequency estimation model for environmental disturbances is used to characterize the atomic clock data under environmental disturbances, including the atomic clock data not affected by environmental disturbances and the total frequency offset of the atomic clock under environmental disturbances; The total frequency offset model of the atomic clock under environmental disturbance includes: a frequency offset model of the atomic clock caused by temperature, a frequency offset model of the atomic clock caused by humidity, and a frequency offset model of the atomic clock caused by the interaction of temperature and humidity.

2. The atomic clock frequency estimation model facing environmental disturbance according to claim 1, characterized in that: The expression of the total frequency offset model of the atomic clock under environmental disturbance is as follows: ； in, is the total frequency offset model of the atomic clock under environmental disturbance, is the frequency offset model of the atomic clock caused by temperature, is the frequency offset model of the atomic clock caused by humidity, is the frequency offset model of the atomic clock caused by the interaction of temperature and humidity; is the nominal frequency of the atomic clock, is the actual frequency offset caused by environmental factors, is the static effect coefficient of temperature on frequency deviation; is the dynamic effect coefficient of frequency shift caused by instantaneous temperature change, is the real-time temperature, is the reference temperature of the atomic clock, is the rate of temperature change, is the linear shift coefficient caused by humidity, is the coefficient of the nonlinear quadratic drift effect caused by humidity, is the real-time humidity, is the reference humidity of the atomic clock, It is a coefficient used to describe the frequency shift caused by the interaction between temperature and humidity.

3. The atomic clock frequency estimation model for environmental disturbance according to claim 1 or 2, characterized in that: The expression of the atomic clock frequency estimation model facing environmental disturbance is as follows: ； in, is the atomic clock data model, For time, is the initial time difference, is the initial frequency difference, is the linear frequency drift, is random noise, and characterizes the atomic clock data when not disturbed by the environment, is the total frequency offset model of the atomic clock under environmental disturbances, and, Characterizes the total frequency offset of the atomic clock under environmental disturbance, characterizing the atomic clock data under environmental disturbances, is the nominal frequency of the atomic clock, is the actual frequency deviation caused by environmental factors.

4. A dynamic correction method based on an atomic clock frequency estimation model oriented to environmental disturbances, characterized in that: include: Acquire environmental parameters at multiple different moments, and atomic clock data under the disturbance of the environmental parameters at each of the multiple different moments; Determine the model coefficients in the atomic clock frequency estimation model facing environmental disturbance according to the environmental parameters at the multiple different moments and the atomic clock data under the disturbance of the environmental parameters at each moment, and obtain the atomic clock frequency estimation model to be used; The atomic clock frequency estimation model facing environmental disturbances includes an atomic clock data model and a total frequency offset model of the atomic clock under environmental disturbances, and the atomic clock frequency estimation model facing environmental disturbances is used to characterize the atomic clock data under environmental disturbances, including the atomic clock data not affected by environmental disturbances and the total frequency offset of the atomic clock under environmental disturbances; the total frequency offset model of the atomic clock under environmental disturbances includes: a frequency offset model of the atomic clock caused by temperature, a frequency offset model of the atomic clock caused by humidity, and a frequency offset model of the atomic clock caused by the interaction of temperature and humidity; According to the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment, the atomic clock data not disturbed by the environment at each moment is estimated by using the atomic clock frequency estimation model to be used.

5. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4 is characterized in that: The model coefficients in the atomic clock frequency estimation model for environmental disturbances include: static effect coefficients of temperature on frequency offset , Dynamic effect coefficient of frequency shift caused by instantaneous temperature change , Linear offset coefficient caused by humidity , the coefficient of the nonlinear quadratic drift effect caused by humidity , used to describe the coefficient of frequency shift caused by temperature and humidity interaction ; The method of determining the model coefficients in the atomic clock frequency estimation model for environmental disturbance according to the environmental parameters at the multiple different moments and the atomic clock data under the disturbance of the environmental parameters at each moment, and obtaining the atomic clock frequency estimation model to be used, comprises: Substitute the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment into the atomic clock frequency estimation model facing environmental disturbance to obtain , , , and Multiple equations for unknown variables; According to the multiple equations, , , , and The value of , , , and The value of is substituted into the atomic clock frequency estimation model oriented to environmental disturbance to obtain the atomic clock frequency estimation model to be used.

6. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4 is characterized in that: The last moment among the multiple different moments is the current moment, and the remaining moments among the multiple different moments are different moments before the current moment.

7. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4 is characterized in that: The multiple different moments are multiple historical moments with a chronological order.

8. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4 is characterized in that: The expression of the total frequency offset model of the atomic clock under environmental disturbance is as follows: ； in, is the total frequency offset model of the atomic clock under environmental disturbance, is the frequency offset model of the atomic clock caused by temperature, is the frequency offset model of the atomic clock caused by humidity, is the frequency offset model of the atomic clock caused by the interaction of temperature and humidity; is the nominal frequency of the atomic clock, is the actual frequency offset caused by environmental factors, is the static effect coefficient of temperature on frequency deviation; is the dynamic effect coefficient of frequency shift caused by instantaneous temperature change, is the real-time temperature, is the reference temperature of the atomic clock, is the rate of temperature change, is the linear shift coefficient caused by humidity, is the coefficient of the nonlinear quadratic drift effect caused by humidity, is the real-time humidity, is the reference humidity of the atomic clock, It is a coefficient used to describe the frequency shift caused by the interaction between temperature and humidity.

9. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4, characterized in that: The expression of the atomic clock frequency estimation model facing environmental disturbance is as follows: ； in, is the atomic clock data model, For time, Initial time difference, is the initial frequency difference, is the linear frequency drift, is random noise, and characterizes the atomic clock data when not disturbed by the environment, is the total frequency offset model of the atomic clock under environmental disturbances, and, Characterizes the total frequency offset of the atomic clock under environmental disturbance, characterizing the atomic clock data under environmental disturbances, is the nominal frequency of the atomic clock, is the actual frequency deviation caused by environmental factors.

10. The dynamic correction method based on the atomic clock frequency estimation model oriented to environmental disturbance according to claim 4, characterized in that: The environmental parameters include: temperature and humidity; the atomic clock data at each moment not disturbed by the environment is estimated using the atomic clock frequency estimation model to be used according to the environmental parameters at each moment and the atomic clock data under the disturbance of the environmental parameters at each moment, including: Using the total frequency offset model of the atomic clock under environmental disturbance in the atomic clock frequency estimation model to be used, according to the temperature and humidity at each moment, calculate the total frequency offset of the atomic clock under the disturbance of the environmental parameters at each moment; The atomic clock data under the disturbance of the environmental parameters at each moment is subtracted from the total frequency offset of the atomic clock under the disturbance of the environmental parameters at each moment, and the obtained difference is used as the estimated atomic clock data at each moment that is not disturbed by the environment.

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