A method for power measurement and mode monitoring of a planar high-power microwave radiation field

Abstract

The present invention provides a method for power measurement and mode monitoring of a planar high-power microwave radiation field. The power measurement method includes: in a measurement site, arranging a planar microwave sensor on a measurement surface in the energy concentration area facing the radiation source; concentric first to Nth measurement rings are arranged on the measurement surface; Q measurement points on the nth measurement ring are respectively: the first measurement point T of the nth ring 1 n to the Qth measurement point T of the nth ring Q n ; a microwave sensor is arranged at each measurement point; the electric field amplitude and electric field phase of each measurement point are measured and obtained by using the planar microwave sensor, and the power density is calculated according to the electric field amplitude; the radiation field power of the radiation source is obtained by integrating the power density on the measurement surface. The mode monitoring method includes: representing the distribution of the radiation electric field intensity on the measurement surface with different colors to achieve image display; diagnosing and monitoring the types, amplitudes, and phases of the hybrid modes of the high-power microwave source by using the principle of mode orthogonality.

Description

Technical Field

[0001] The present invention relates to the technical field of high-power microwave radiation field measurement, and in particular to a method for measuring a radiation field based on a planar array. Background Art

[0002] The power measurement of a high-power microwave radiation field often uses a metal antenna. The measurement method is the array integration method. By distributing arc-shaped antenna measurement points in the horizontal direction of the spherical surface where the radiation field energy is concentrated or using the relative measurement method of two horns, the power density distribution on the arc is obtained, and the radiation field power is obtained through the integration of the area. This method is only applicable to radiation fields with a circumferentially symmetric radiation pattern, and the measurement results are not accurate enough. Different-sized antennas need to be replaced in microwave measurements in different frequency bands, and the power capacity of the antenna is another important factor limiting high-power microwave measurements.

[0003] In the field of high-power microwave measurement, there are few methods for mode diagnosis based on the radiation field. Usually, it is the image display method. For example, using thermal paper or neon tube arrays to display the radiation field distribution image can qualitatively identify single modes and a few mixed modes, but cannot quantitatively identify mixed modes, and at the same time cannot dynamically monitor. Using the analytical method to achieve mode diagnosis through the radiation field distribution requires high-spatial-resolution radiation field data. However, the array antenna affects the measurement results due to the mutual coupling effect, limiting the spatial resolution. At the same time, the metal structure will also affect the radiation field distribution, making the results uncertain. In the research and development of high-power microwave sources, using the radiation field to achieve microwave source power measurement and mode monitoring will not affect the internal electric field distribution of the radiation source compared with online monitoring methods such as probes and couplers. It can dynamically monitor the radiation field distribution and achieve accurate power measurement and mode diagnosis, which is of great significance for the research and development and performance determination of high-power microwave sources. Summary of the Invention

[0004] In view of this, the present invention provides a method for measuring the power and monitoring the mode of a high-power microwave radiation field based on a planar array to solve the problems in the prior art that the antenna measurement method affects the radiation field distribution, the spatial resolution is limited, and it is difficult to achieve mixed mode diagnosis.

[0005] The present invention provides a method for measuring the power of a high-power microwave radiation field based on a planar array, including: in the measurement site, a planar array of microwave sensors is arranged on the measurement surface facing the energy concentration area of the radiation source; concentric first to Nth measurement rings are arranged on the measurement surface, and the diameters of the first to Nth measurement rings increase; Q measurement points are evenly distributed on each measurement ring, and a microwave sensor is arranged at each measurement point. A microwave sensor is arranged at the center of the first to Nth measurement rings. The Q measurement points on the nth measurement ring are respectively: the first measurement point T of the nth ring distributed sequentially along the circumferential direction 1 nto the Qth measurement point T of the nth ring Q n ; the qth measurement point T of the first ring q from the 1st to the qth measurement point T of the Nth ring q N are located on a straight line; n is an integer greater than or equal to 1 and less than or equal to N; q is an integer greater than or equal to 1 and less than or equal to Q; the electric field amplitude and electric field phase at each measurement point are measured and obtained by using a planar array microwave sensor, and the power density is calculated according to the electric field amplitude distribution; the radiation field power of the radiation source is obtained by integrating the power density on the measurement surface.

[0006] Optionally, the included angle between the line connecting the upper top surface of the measurement surface to the center of the transmitting antenna and the line connecting the lower vertex of the measurement surface to the center of the transmitting antenna is 2θ; for adjacent measurement rings, the included angle between the lines connecting the measurement rings to the center of the transmitting antenna is Δθ, and Δθ = 2θ / n.

[0007] Optionally, the performance indicators of each microwave sensor are the same, and the microwave sensor is used to sense the electric field information.

[0008] Optionally, it further includes: an electromagnetic shielding room is set outside the measurement site; a control and processing terminal is set in the electromagnetic shielding room, and the control and processing terminal is connected to the planar array sensor through a signal transmission line; the control and processing terminal collects and processes the electric field sensing information.

[0009] Optionally, the radiation source has a transmitting antenna, and the line connecting the center of the measurement surface to the center of the transmitting antenna is perpendicular to the measurement surface; the distance L from the center of the measurement surface to the transmitting antenna satisfies L > λ / 2π, where λ is the wavelength of the wave emitted by the radiation source.

[0010] Optionally, the power density of the test area surrounded by the jth measurement point of the ith ring, the (j + 1)th measurement point of the ith ring, the jth measurement point of the (i + 1)th ring, and the (j + 1)th measurement point of the (i + 1)th ring where S j i is the power density measured by the microwave sensor at the jth measurement point of the ith ring, S j+1 i is the power density measured by the microwave sensor at the (j + 1)th measurement point of the ith ring, S j i+1 is the power density measured by the microwave sensor at the jth measurement point of the (i + 1)th ring, S j +1 i+1is the power density measured by the microwave sensor at the (j + 1)-th measurement point of the (i + 1)-th ring, where i is an integer greater than or equal to 1 and less than or equal to N - 1, and j is an integer greater than or equal to 1 and less than or equal to Q - 1; the power density of the test area enclosed by the Q-th measurement point of the i-th ring, the first measurement point of the i-th ring, the Q-th measurement point of the (i + 1)-th ring, and the first measurement point of the (i + 1)-th ring wherein, is the power density measured by the microwave sensor at the Q-th measurement point of the i-th ring, is the power density measured by the microwave sensor at the first measurement point of the i-th ring, is the power density measured by the microwave sensor at the Q-th measurement point of the (i + 1)-th ring, is the power density measured by the microwave sensor at the first measurement point of the (i + 1)-th ring; the power density of the test area enclosed by the j-th measurement point of the first ring, the (j + 1)-th measurement point of the first ring, and the center of the measurement ring S 0 0 is the power density measured by the microwave sensor at the center from the first measurement ring to the N-th measurement ring, S j 1 is the power density measured by the microwave sensor at the j-th measurement point of the first ring, S j+1 1 is the power density measured by the microwave sensor at the (j + 1)-th measurement point of the first ring; the power density of the test area enclosed by the Q-th measurement point of the first ring, the first measurement point of the first ring, and the center of the measurement ring S Q 1 is the power density measured by the microwave sensor at the Q-th measurement point of the first ring, S 1 1 is the power density measured by the microwave sensor at the first measurement point of the first ring; P is the radiation field power of the radiation source, L is the distance from the center of the measurement surface to the transmitting antenna, i' is an integer greater than or equal to 0 and less than or equal to N - 1, and j' is an integer greater than or equal to 1 and less than or equal to Q.

[0011] Optionally, the method for obtaining the power density S q n at the q-th measurement point T q n of the n-th ring includes: obtaining the electric field strength E q n at the q-th measurement point T q n ; taking the phase of the electric field at the center from the first measurement ring to the N-th measurement ring as a reference, obtaining the phase difference △φ q n at the q-th measurement point T q n ; according to the electric field strength E qn Obtain S q n , S q n = (E q n ) 2 / 2π, where π is the wave impedance.

[0012] Optionally, the measurement site includes an anechoic chamber or an outdoor field without obstacle occlusion.

[0013] The present invention also provides a method for monitoring the mode of a high-power microwave radiation field based on a planar array, including: obtaining the planar electric field function on the measurement surface according to the electric field intensity at each measurement point Drawing a two-dimensional image with different colors representing the electric field intensity at different positions to visually display the distribution of the radiation electric field; calculating the planar wave spectrum at z = L by using the two-dimensional inverse Fourier transform: k is the wave number, △L is the difference between the distance from the q-th measurement point in the n-th ring to the transmitting antenna of the radiation source and L, L is the distance from the center of the measurement surface to the transmitting antenna, k x , k y , k z are the wave number components of k along the x, y, and z axes of the rectangular coordinate system respectively. Calculating the hybrid mode types, amplitudes, and phases according to the mode orthogonality:

[0014] |a m | is the mode amplitude. is the mode phase; w is the imaginary unit. is the conjugate function of the planar wave spectrum of mode m and is a known parameter.

[0015] The technical solution provided by the present invention has the following effects:

[0016] A method for measuring the power and monitoring the mode of a high-power microwave radiation field based on a planar array provided by the technical solution of the present invention. In the measurement of high-power microwaves, the microwave sensor adopted by the present invention has a smaller volume and higher spatial resolution compared with traditional metal antennas, and can accurately measure the parameters at a certain point in space. The material of the microwave sensor is transparent to electromagnetic waves, has almost no disturbance to the electric field, and the sensors do not affect each other, so that a planar array arrangement can be realized. The measurement points are densely distributed at the place where the main lobe of the radiation pattern changes greatly in the radiation direction, and high-resolution radiation field data can be obtained, which is not limited to the power measurement and mode diagnosis of a circularly symmetric radiation field. By measuring a single pulse of high-power microwaves, relatively accurate radiation field parameters under the emission conditions can be obtained. The radiation field power is obtained by integrating the power density, and the type, amplitude and phase of the radiation field mode are quantitatively determined by an analytical method, so as to realize power measurement and mode diagnosis with higher accuracy. The real-time measurement of high-power microwave radiation field data by using a planar array of microwave sensors can realize the monitoring of high-power microwave modes. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of a measurement scenario in the process of a method for measuring the power of a high-power microwave radiation field based on a planar array according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the positional relationship between a microwave sensor and a radiation source on a measurement surface according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the arrangement of microwave sensors on a measurement surface according to an embodiment of the present invention. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two elements. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] This embodiment provides a method for measuring the power of a planar array high-power microwave radiation field, including:

[0026] In the measurement site 10, a planar array microwave sensor is set on the measurement surface in the energy concentration area facing the radiation source; concentric first to Nth measurement rings are set on the measurement surface, and the diameters of the first to Nth measurement rings increase; Q measurement points are evenly distributed on each measurement ring, and a microwave sensor is set at each measurement point. A microwave sensor is set at the center of the first to Nth measurement rings. The Q measurement points on the nth measurement ring are respectively: the first measurement point T of the nth ring 1 n to the Qth measurement point T of the nth ring Q n ; the qth measurement point T of the first ring q 1 to the qth measurement point T of the Nth ring q N are located on a straight line; n is an integer greater than or equal to 1 and less than or equal to N; q is an integer greater than or equal to 1 and less than or equal to Q;

[0027] Use a planar array microwave sensor to measure and obtain the electric field amplitude and electric field phase at each measurement point, and calculate the power density according to the electric field amplitude distribution;

[0028] Integrate the power density over the measurement plane to obtain the radiation field power of the radiation source.

[0029] The planar array microwave sensor includes a number of microwave sensors arranged in a planar array. The microwave sensors hardly affect the electromagnetic wave distribution. The microwave sensors are small in size and can accurately measure the magnitude of the radiation field at a certain point. The performance indicators of each microwave sensor in the planar array microwave sensor are consistent. The microwave sensors are used to sense the electric field information. The distance between the microwave sensors does not affect the measurement performance of each microwave sensor.

[0030] The radiation source has a transmitting antenna, and the center of the measurement plane is on the same horizontal line as the center of the transmitting antenna of the radiation source. The antenna aperture of the radiation source is parallel to the measurement plane.

[0031] The measurement site 10 includes a microwave anechoic chamber or an outdoor field without obstacle shielding.

[0032] The planar array radiation field measurement method further includes: setting an electromagnetic shielding chamber 20 outside the measurement site; setting a control and processing terminal in the electromagnetic shielding chamber, and connecting the control and processing terminal to the planar array sensor through a signal transmission line; the control and processing terminal collects and processes the electric field sensing information, including obtaining radiation electric field information, calculating radiation power, displaying a radiation field distribution image, and diagnosing the microwave source mode.

[0033] The signals transmitted inside the signal transmission line are not affected by electromagnetic waves, such as using optical fibers, coaxial cables with external shielding, etc.

[0034] The microwave sensors are used to measure the magnitude of the electric field at the measurement points where they are located. A number of microwave sensors are arranged at intervals in the measurement plane, and the line connecting the center of the measurement plane to the center of the transmitting antenna is perpendicular to the measurement plane; the distance L from the center of the measurement plane to the transmitting antenna satisfies L > λ / 2π, where λ is the wavelength of the wave emitted by the radiation source. That is, the distance from the center of the measurement plane to the transmitting antenna is outside the reactive region.

[0035] The included angle between the line connecting the center of the upper top surface of the measurement plane to the center of the transmitting antenna and the line connecting the lower vertex of the measurement plane to the center of the transmitting antenna is 2θ, so that the measurement plane covers the beam focusing area.

[0036] The radiation source includes a high-power microwave radiation source, and the radiation electromagnetic pulse peak power of the high-power microwave radiation source is greater than 100 MW.

[0037] When the radiation power of the radiation source exceeds the response ability of the microwave sensor, increase the measurement distance to adapt to the radiation field, and at the same time, it is necessary to increase the area of the measurement plane. For high-power microwave sources with a power in the GW order of magnitude, far-field measurement is usually required to ensure the normal response of the sensor.

[0038] There are N concentric measurement rings arranged on the measurement surface, and a number of microwave sensors are distributed on each measurement ring. For adjacent measurement rings, the included angle between the connecting lines from the measurement rings to the center of the transmitting antenna is Δθ, and Δθ = 2θ / n. The measurement rings are arranged at equal angular intervals with respect to the transmitting antenna.

[0039] The N concentric measurement rings are respectively the first measurement ring to the Nth measurement ring, and the diameters of the first measurement ring to the Nth measurement ring increase; the first measurement ring to the Nth measurement ring are concentrically arranged. There are Q measurement points evenly distributed on each measurement ring, and a microwave sensor is arranged at each measurement point. A microwave sensor is arranged at the center of the first measurement ring to the Nth measurement ring. The Q measurement points on the nth measurement ring are respectively: the first measurement point T of the nth ring 1 n to the Qth measurement point T of the nth ring Q n ; the qth measurement point T of the first ring q 1 to the qth measurement point T of the Nth ring q N are located on a straight line; n is an integer greater than or equal to 1 and less than N; q is an integer greater than or equal to 1 and less than or equal to Q.

[0040] In this embodiment, Q is taken as an example to be equal to 8, and N is taken as an example to be equal to 4. In other embodiments, Q can also select other values, and N can also select other values, which are set according to the radiation field pattern and the required measurement accuracy.

[0041] The power density of the test area surrounded by the jth measurement point of the ith ring, the (j + 1)th measurement point of the ith ring, the jth measurement point of the (i + 1)th ring, and the (j + 1)th measurement point of the (i + 1)th ring where S j i is the power density measured by the microwave sensor at the jth measurement point of the ith ring, and S j+1 i is the power density measured by the microwave sensor at the (j + 1)th measurement point of the ith ring, and S j i+1 is the power density measured by the microwave sensor at the jth measurement point of the (i + 1)th ring, and S j+1 i+1 is the power density measured by the microwave sensor at the (j + 1)th measurement point of the (i + 1)th ring. i is an integer greater than or equal to 1 and less than or equal to N - 1, and j is an integer greater than or equal to 1 and less than or equal to Q - 1. The power density of the test area surrounded by the Qth measurement point of the ith ring, the first measurement point of the ith ring, the Qth measurement point of the (i + 1)th ring, and the first measurement point of the (i + 1)th ring where is the power density measured by the microwave sensor at the Qth measurement point of the ith ring, is the power density measured by the microwave sensor at the 1st measurement point of the ith ring, is the power density measured by the microwave sensor at the Qth measurement point of the (i + 1)th ring, is the power density measured by the microwave sensor at the 1st measurement point of the (i + 1)th ring.

[0042] The power density of the test area enclosed by the jth measurement point of the first ring, the (j + 1)th measurement point of the first ring, and the center of the measurement ring S 0 0 is the power density measured by the microwave sensor at the center from the first measurement ring to the Nth measurement ring, S j 1 is the power density measured by the microwave sensor at the jth measurement point of the first ring, S j+1 1 is the power density measured by the microwave sensor at the (j + 1)th measurement point of the first ring; the power density of the test area enclosed by the Qth measurement point of the first ring, the 1st measurement point of the first ring, and the center of the measurement ring S Q 1 is the power density measured by the microwave sensor at the Qth measurement point of the first ring, S 1 1 is the power density measured by the microwave sensor at the 1st measurement point of the first ring.

[0043] P is the radiation field power of the radiation source, L is the distance from the center of the measurement surface to the transmitting antenna, i' is an integer greater than or equal to 0 and less than or equal to N - 1, and j' is an integer greater than or equal to 1 and less than or equal to Q.

[0044] The power measurement method proposed by the present invention is not only applicable to the field of high-power microwave measurement, but also applicable to general antenna measurement, especially for high-gain transmitting antenna radiation sources. The planar array covers the beam aggregation area. When the measured power contains at least 95% of the transmitting antenna power or the planar array covers at least a 20 dB range of the radiation pattern, it can be approximated as the total power of the transmitting antenna. However, this method is not applicable to omnidirectional antennas, such as radar antennas.

[0045] The power density S at the qth measurement point T of the nth ring q n at the place q n The acquisition method includes: acquiring the electric field strength E at the qth measurement point T of the nth ring q n at the place q n ; taking the phase of the electric field at the center from the first measurement ring to the Nth measurement ring as a reference, acquiring the phase difference △φ at the qth measurement point T of the nth ring q n at the placeq n ; Obtain S according to the electric field strength E q n Obtain S q n , S q n =(E q n ) 2 / 2π, where π is the wave impedance. The method for obtaining the power density S0 at the center from the first measurement loop to the Nth measurement loop includes: obtaining the electric field strength E0 at the center from the first measurement loop to the Nth measurement loop 0 ; Obtain S0 according to the electric field strength E0 0 ; Obtain S0 according to the electric field strength E 0 0, S 0 0, S 0 0=(E 0 0) 2 / 2π.

[0046] The present invention also provides a method for monitoring the mode of a planar array high-power microwave radiation field, including: obtaining the planar electric field function on the measurement surface according to the electric field strength at each measurement point Drawing a two-dimensional image with different colors representing the electric field strength at different positions to visually display the distribution of the radiation electric field; calculating the plane wave spectrum at z = L by using the two-dimensional inverse Fourier transform: k is the wave number, ΔL is the difference between the distance from the qth measurement point of the nth loop to the transmitting antenna of the radiation source and L, L is the distance from the center of the measurement surface to the transmitting antenna, k x , k y , k z are respectively the wave number components along the x, y, and z of the rectangular coordinate system, Calculating the hybrid mode types, amplitudes, and phases according to the mode orthogonality:

[0047] |a m | is the mode amplitude, is the mode phase; w is the imaginary unit, is the conjugate function of the plane wave spectrum of mode m, which is a known parameter.

[0048] The premise for the present invention to realize mode diagnosis by using the mode orthogonality principle is based on the obtained high-accuracy radiation field data, and the radiation field data on the surface obtained by other measurement methods is also applicable to this method. In the operation of the mode diagnosis method, computer numerical analysis is often used.

[0049] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A method for measuring the power of a high-power microwave radiation field based on a planar array, characterized in that, Including: In the measurement site, a planar microwave sensor is arranged on the measurement surface facing the energy concentration area of the radiation source; A first measurement ring to an Nth measurement ring that are concentric are arranged on the measurement surface, and the diameters of the first measurement ring to the Nth measurement ring increase; Q measurement points are evenly distributed on each measurement ring, and a microwave sensor is arranged at each measurement point. A microwave sensor is arranged at the center of the first measurement ring to the Nth measurement ring. The Q measurement points on the nth measurement ring are respectively: the first measurement point T of the nth ring arranged in sequence along the circumferential direction 1 n to the Qth measurement point T of the nth ring Q n ; the qth measurement point T of the first ring q 1 to the qth measurement point T of the Nth ring q N are located on a straight line; n is an integer greater than or equal to 1 and less than or equal to N; q is an integer greater than or equal to 1 and less than or equal to Q; the included angle between the connection line from the upper top surface of the measurement surface to the center of the transmitting antenna and the connection line from the lower vertex of the measurement surface to the center of the transmitting antenna is 2θ; for adjacent measurement rings, the included angle between the connection lines from the measurement rings to the center of the transmitting antenna is Δθ, and Δθ = 2θ / n; The electric field amplitude and electric field phase at each measurement point are measured and obtained by using a planar microwave sensor, and the power density is calculated based on the electric field amplitude; the power density of the test area enclosed by the j-th measurement point in the i-th ring, the (j + 1)-th measurement point in the i-th ring, the j-th measurement point in the (i + 1)-th ring, and the (j + 1)-th measurement point in the (i + 1)-th ring where S j i is the power density measured by the microwave sensor at the j-th measurement point in the i-th ring, S j+1 i is the power density measured by the microwave sensor at the (j + 1)-th measurement point in the i-th ring, S j i+1 is the power density measured by the microwave sensor at the j-th measurement point in the (i + 1)-th ring, S j+1 i+1 is the power density measured by the microwave sensor at the (j + 1)-th measurement point in the (i + 1)-th ring, i is an integer greater than or equal to 1 and less than or equal to N - 1, and j is an integer greater than or equal to 1 and less than or equal to Q - 1; the power density of the test area enclosed by the Q-th measurement point in the i-th ring, the first measurement point in the i-th ring, the Q-th measurement point in the (i + 1)-th ring, and the first measurement point in the (i + 1)-th ring where is the power density measured by the microwave sensor at the Q-th measurement point in the i-th ring, is the power density measured by the microwave sensor at the first measurement point in the i-th ring, is the power density measured by the microwave sensor at the Q-th measurement point in the (i + 1)-th ring, is the power density measured by the microwave sensor at the first measurement point in the (i + 1)-th ring; The power density of the test area enclosed by the j-th measurement point of the first ring, the (j + 1)-th measurement point of the first ring, and the center of the measurement ring S 0 0 is the power density measured by the microwave sensor at the center from the first measurement ring to the N-th measurement ring, S j 1 is the power density measured by the microwave sensor at the j-th measurement point of the first ring, S j+1 1 is the power density measured by the microwave sensor at the (j + 1)-th measurement point of the first ring; the power density of the test area enclosed by the Q-th measurement point of the first ring, the 1st measurement point of the first ring, and the center of the measurement ring S Q 1 is the power density measured by the microwave sensor at the Q-th measurement point of the first ring, S 1 1 is the power density measured by the microwave sensor at the 1st measurement point of the first ring; P is the radiation field power of the radiation source, L is the distance from the center of the measurement surface to the transmitting antenna, i' is an integer greater than or equal to 0 and less than or equal to N - 1, and j' is an integer greater than or equal to 1 and less than or equal to Q; Integrate the power density on the measurement surface to obtain the radiation field power of the radiation source.

2. The method for measuring the power of a planar array high-power microwave radiation field according to claim 1, characterized in that The performance indicators of each microwave sensor are consistent, and the microwave sensor is used to sense the electric field information.

3. The power measurement method of the planar array high-power microwave radiation field according to claim 1, characterized in that, It also includes: An electromagnetic shielding room is arranged outside the measurement site; A control and processing terminal is arranged in the electromagnetic shielding room, and the control and processing terminal is connected to the planar microwave sensor through a signal transmission line; The control and processing terminal collects and processes the electric field sensing information.

4. The method for measuring the power of a planar array high-power microwave radiation field according to claim 1, characterized in that The radiation source has a transmitting antenna, and the connection line from the center of the measurement surface to the center of the transmitting antenna is perpendicular to the measurement surface; the distance L from the center of the measurement surface to the transmitting antenna satisfies L>λ / 2π, where λ is the wavelength of the wave emitted by the radiation source.

5. The method for measuring the power of a planar array high-power microwave radiation field according to claim 1, characterized in that The power density S at the q-th measurement point T of the n-th ring q n is obtained by the following method: obtaining the electric field strength E at the q-th measurement point T of the n-th ring q n ; taking the phase of the electric field at the center of the first measurement ring to the N-th measurement ring as a reference, obtaining the phase difference △φ at the q-th measurement point T of the n-th ring q n ; obtaining S according to the electric field strength E q n ; where S = (E q n )^2 / 2π, where π is the wave impedance q n ; q n q n q n q n 2 ​​​​​ 6. The method for measuring the power of a planar array high-power microwave radiation field according to claim 1, wherein The measurement site includes a microwave anechoic chamber or an outdoor field without obstacle obstruction.

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