A test method for the spatial distribution of time-varying electric fields in frequency diversity arrays

Abstract

The present invention discloses a testing method for the spatial distribution of time-varying electric fields in a frequency diversity array. The method comprises a transmitting structure for providing rotational scanning in an angle dimension, a receiving structure for providing translational scanning in a distance dimension, and a high-frequency real-time oscilloscope disposed therebetween. By rotating a turntable and laterally shifting the receiving structure, the testing device is able to traverse the entire space to collect signals. On the premise of ensuring the collection of signals in the entire space, a reference frequency signal is introduced through the high-frequency real-time oscilloscope to achieve equivalent static measurement of the time-varying signal. After the test signal undergoes time-domain zeroing correction, a distribution diagram of the time-varying period of the electromagnetic field at the nanosecond level can be drawn. This solves the problem of fast time-varying electric field testing that cannot be achieved by traditional technologies due to the fast time-varying characteristics of the spatial electric field distribution of the frequency diversity array. The method also has considerable application universality and feasibility.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic measurement, in particular to a testing method for the spatial distribution of time-varying electric fields in a frequency diversity array. Background Art

[0002] Frequency diversity arrays are a newly emerging electromagnetic architecture technology. Their primary difference from traditional phased arrays is that each element in a frequency diversity array uses a different transmit signal carrier frequency, while each element in a traditional phased array generally uses the same carrier frequency. The frequency offset between elements in a frequency diversity array causes its spatial propagation beam to be dependent not only on azimuth but also on range. Therefore, in addition to possessing all the functional characteristics of a phased array, frequency diversity arrays also have broad application potential in target detection, interference suppression, electronic countermeasures, and secure communications.

[0003] Unlike phased arrays, conventional frequency diversity arrays add a frequency offset Δf to the transmitted signal at adjacent array elements that is much smaller than its carrier frequency. Assuming the carrier frequency is f0, the frequency of the signal radiated by the mth array element is:

[0004] f m =f0+MΔf,m=0,1,…,M-1 (1)

[0005] Where M is the number of array elements. Assuming the distance between adjacent elements is d and the array physical pointing direction is θ, the electric field strength of the beam pattern of the frequency diversity array at the target is:

[0006]

[0007] Where, α m represents the excitation amplitude of the radiated electric field, ψ m Represents the excitation phase of the signal to the antenna array element, r m ≈r-mdsinθ and ω m =ω0+mΔω=2πf0+2πmΔf represents the distance and angular frequency of the mth array element, k m =k0+mΔk represents the distance propagation constant of the mth array element, where k0 is the propagation constant corresponding to f0.

[0008] Clearly, as can be seen from the mathematical expressions above, the key characteristics of frequency diversity arrays are their distance-dependent, time-varying, and auto-scanning array factors. Because their spatial electromagnetic field distribution is time-varying, with periods often on the nanosecond scale, traditional testing methods that rely on spatial traversal to collect electromagnetic field components are no longer applicable. A method for testing the spatial distribution of time-varying electric fields suitable for frequency diversity arrays is urgently needed. Summary of the Invention

[0009] In response to the technical deficiencies in the background technology, the present invention proposes a method for testing the spatial distribution of the time-varying electric field in a frequency diversity array, which solves the above-mentioned technical problems and meets practical needs. The specific technical solution is as follows:

[0010] A testing device for the spatial distribution of time-varying electric fields in a frequency diversity array includes a transmitting structure for providing rotational scanning in the angle dimension, a receiving structure for providing translational scanning in the distance dimension, and a high-frequency real-time oscilloscope arranged between the two. The transmitting structure includes a transmitter to be tested, a turntable for mounting the transmitter to be tested, and a transmitter fixing fixture for mounting the turntable. The transmitter to be tested is rotated and scanned on the transmitter fixing fixture via the turntable. The receiving structure includes a transverse track, a receiving electronic control platform arranged on the transverse track, and a receiving device arranged on the structural electronic control platform. The receiving device is translationally scanned on the transverse track via the structural electronic control platform. The receiving device and the transmitter to be tested are both electrically connected to the high-frequency real-time oscilloscope via a coaxial cable.

[0011] Furthermore, a voltage source is provided in the transmitter fixing fixture, the transmitter to be tested is electrically connected to the voltage source, the number of the transmitter to be tested is not less than one, and a driving motor is provided in the transmitter fixing fixture that passes through its upper end surface and is connected to the turntable.

[0012] Furthermore, a protective cover is provided on the outer surface of the turntable, the lower end surface of the turntable is movably connected to the driving motor, and the upper end surface of the turntable is fixedly connected to the transmitter to be tested through a transmitter connecting rod.

[0013] Furthermore, the upper end surface of the receiving electric control platform is fixedly connected to the receiving device through the receiving device connecting rod, and the lower end surface of the receiving electric control platform is connected to the transverse track through the connecting piece of its own lower end surface, and the connecting piece is covered on the outer surface of the guide track of the transverse track.

[0014] Furthermore, the high-frequency real-time oscilloscope includes channel one and channel two, the transmitter to be tested is electrically connected to channel one via a coaxial cable, and the receiving device is electrically connected to channel two via a coaxial cable.

[0015] A method for testing the spatial distribution of a time-varying electric field in a frequency diversity array is applied to the device for testing the spatial distribution of a time-varying electric field in a frequency diversity array. The method comprises the following steps:

[0016] Assemble the test equipment, electrically connect the voltage source to the frequency diversity array circuit of the transmitter under test, adjust the turntable and the receiving electronic control platform, and electrically connect the transmitter under test and the receiving device to a high-frequency real-time oscilloscope for collecting the reference frequency signal and the field distribution test signal, respectively;

[0017] Full-space signal information is collected. The transmitter under test collects reference frequency signals and corresponding reference spatial coordinates at different spatial points at different times under the action of a turntable. At the same time, the receiving device collects field distribution test signals and corresponding field distribution spatial coordinates at different spatial points at different times under the action of a receiving electronic control platform. The reference frequency signal and field distribution test signal are displayed on a high-frequency real-time oscilloscope and the relevant waveforms are recorded.

[0018] Signal time domain zeroing processing, assuming a normalized zero time according to the reference frequency signal, recording the normalized electromagnetic field value corresponding to the field distribution test signal at the normalized zero time, traversing all field points in space, and recording all normalized electromagnetic field values ​​corresponding to the normalized zero time;

[0019] Draw an electromagnetic field spatial distribution diagram, assign different shades of color according to the normalized electromagnetic field value, draw the electromagnetic field spatial distribution diagram corresponding to the normalized zero moment according to the field distribution spatial coordinates, the normalized electromagnetic field value corresponding to the field distribution spatial coordinates, and the color corresponding to the normalized electromagnetic field value, repeat this step to obtain the electromagnetic field spatial distribution diagram at different moments.

[0020] Furthermore, the transmitter to be tested is connected to channel one of a high-frequency real-time oscilloscope via a coaxial cable, for providing a reference frequency signal to the high-frequency real-time oscilloscope; the receiving device is connected to channel two of the high-frequency real-time oscilloscope via a coaxial cable, for providing a field distribution test signal to the high-frequency real-time oscilloscope.

[0021] Furthermore, the normalized zero time is the intersection time of the falling edge of the reference frequency signal and the amplitude of the vertical coordinate, and the normalized electromagnetic field value is the signal amplitude corresponding to the field distribution test signal at the normalized zero time.

[0022] The beneficial effects of the present invention are as follows: through the turntable and transverse track with adjustable scanning space range, signal acquisition of full space traversal can be achieved, thereby increasing the test space of the frequency diversity array fast time-varying electric field distribution test, and through the dual-channel signal acquisition of the high-frequency real-time oscilloscope, the test cycle of the frequency diversity array fast time-varying electric field distribution test is increased, and more electromagnetic field distribution data in different spaces and times can be collected. After using the reference frequency signal as the reference point for time domain zero correction, multiple field distribution data of multiple field distribution test signals in different time and space are obtained, and then electromagnetic field distribution maps in different time and space are drawn, which greatly improves the accuracy of the test and the reference value of the data. In addition, compared with traditional technologies, the testing method of the present invention does not introduce additional costs and has a relatively high practicality, applicability and feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The present invention is a structural schematic diagram of a testing device for the spatial distribution of time-varying electric fields in a frequency diversity array.

[0024] Figure 2 The present invention is a structural schematic diagram of a receiving electronic control platform for the spatial distribution of time-varying electric fields in a frequency diversity array.

[0025] Figure 3 This is a structural principle diagram of a testing device for the spatial distribution of time-varying electric fields in a frequency diversity array according to the present invention.

[0026] Figure 4 The figure is a flow chart of a method for testing the spatial distribution of time-varying electric fields in a frequency diversity array according to the present invention.

[0027] Figure 5 This is a signal waveform diagram of a testing method for the spatial distribution of time-varying electric fields in a frequency diversity array according to the present invention.

[0028] Figure 6 This is an example diagram of the electromagnetic field spatial distribution diagram of a testing method for the time-varying electric field spatial distribution of a frequency diversity array according to the present invention.

[0029] Among them: transmitting structure 1, receiving structure 2, high-frequency real-time oscilloscope 3, transmitter to be tested 5, turntable 6, transmitter fixing tooling 7, transverse track 8, receiving electronic control platform 9, receiving device 10, coaxial cable 11, voltage source 12, drive motor 13, transmitter connecting rod 14, receiving device connecting rod 15, connector 16, guide track 17. DETAILED DESCRIPTION

[0030] The following describes the implementation methods of the present invention in conjunction with the accompanying drawings and relevant embodiments. It should be pointed out that the following relevant embodiments are only preferred embodiments for better illustrating the present invention itself, and the implementation methods of the present invention are not limited to the following embodiments. In addition, the present invention relates to the relevant necessary components in this technical field and should be regarded as common knowledge in this technical field, which can be known and mastered by technical personnel in this technical field.

[0031] In the description of the present invention, it should be understood that the terms "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention; in addition, the terms "primary" and "secondary" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features; therefore, it is defined that "primary" and "secondary" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly including one or more such features.

[0032] See also Figures 1 to 3 As shown, a test device for the spatial distribution of time-varying electric fields in a frequency diversity array includes a transmitting structure 1 for providing rotational scanning in the angle dimension, a receiving structure 2 for providing translational scanning in the distance dimension, and a high-frequency real-time oscilloscope 3 arranged therebetween. The transmitting structure 1 includes a transmitter to be tested 5, a turntable 6 for mounting the transmitter to be tested 5, and a transmitter fixing fixture 7 for mounting the turntable 6. The transmitter to be tested 5 is rotated and scanned on the transmitter fixing fixture 7 via the turntable 6. The receiving structure 2 includes a transverse track 8, a receiving electronic control platform 9 arranged on the transverse track 8, and a receiving device 10 arranged on the structural electronic control platform. The receiving device 10 is translationally scanned on the transverse track 8 via the structural electronic control platform. The receiving device 10 and the transmitter to be tested 5 are both electrically connected to the high-frequency real-time oscilloscope 3 via a coaxial cable 11.

[0033] Furthermore, a voltage source 12 is provided in the transmitter fixing fixture 7, and the transmitter 5 to be tested is electrically connected to the voltage source 12. The number of the transmitter 5 to be tested is not less than one. A driving motor 13 is provided in the transmitter fixing fixture 7 and passes through its upper end surface and is connected to the turntable 6.

[0034] Furthermore, a protective cover is provided on the outer surface of the turntable 6 , the lower end surface of the turntable 6 is movably connected to the driving motor 13 , and the upper end surface of the turntable 6 is fixedly connected to the transmitter 5 to be tested via a transmitter connecting rod 14 .

[0035] Furthermore, the upper end surface of the receiving electronic control platform 9 is fixedly connected to the receiving device 10 through the receiving device connecting rod 15, and the lower end surface of the receiving electronic control platform 9 is connected to the transverse track 8 through the connecting piece 16 of its own lower end surface, and the connecting piece 16 is covered on the outer surface of the guide track 17 of the transverse track 8.

[0036] Furthermore, the high-frequency real-time oscilloscope 3 includes a channel 1 and a channel 2. The transmitter 5 to be tested is electrically connected to the channel 1 via a coaxial cable 11 , and the receiving device 10 is electrically connected to the channel 2 via a coaxial cable 11 .

[0037] As a preferred embodiment of the present invention, the transmitter 5 to be tested is mounted on the upper end face of the transmitter fixing fixture 7 via the turntable 6, and the turntable 6 is driven by the driving motor 13 to adjust the transmission angle of the transmitter 5 to be tested. The turntable 6 provides the ability of the transmitter to rotate and scan in the angle dimension, enabling the transmitter 5 to rotate and transmit magnetic field signals in the angle dimension; at the same time, the receiving device 10 is mounted on the transverse track 8 via the receiving electronic control platform 9, and the receiving electronic control platform 9 and the transverse track 8 provide the receiving device 10 with the ability of translational scanning in the distance dimension. Through the receiving electronic control platform 9, the receiving device 10 can transversely move on the end face of the transverse track to adjust the distance between the receiving device 10 and the transmitter, so that the transmitter and the receiving device 10 can traverse the test space, thereby collecting the electromagnetic field distribution at different times in different spaces. The transmitter and the receiving device 10 are electrically connected to the channel 1 and the channel 2 of the high-frequency real-time oscilloscope 3 respectively via the coaxial cable 11, so as to facilitate the display and recording of electromagnetic signals.

[0038] See also Figures 1 to 6 As shown, a method for testing the spatial distribution of a time-varying electric field in a frequency diversity array is applied to the testing device for the spatial distribution of a time-varying electric field in a frequency diversity array, wherein the method for testing the spatial distribution of a time-varying electric field in a frequency diversity array comprises the following steps:

[0039] S1: Assemble the test equipment, electrically connect the voltage source 12 to the frequency diversity array circuit of the transmitter under test 5, adjust the turntable 6 and the receiving electronic control platform 9, and electrically connect the transmitter under test 5 and the receiving device 10 to the high-frequency real-time oscilloscope 3 for collecting the reference frequency signal and the field distribution test signal respectively;

[0040] S2: Full-space signal information acquisition: the transmitter under test 5 acquires reference frequency signals and their corresponding reference spatial coordinates at different spatial points at different times under the action of the turntable 6. At the same time, the receiving device 10 acquires field distribution test signals and their corresponding field distribution spatial coordinates at different spatial points at different times under the action of the receiving electronic control platform 9. The reference frequency signals and field distribution test signals are displayed on the high-frequency real-time oscilloscope 3 and the relevant waveforms are recorded;

[0041] S3: Signal time domain zeroing processing, assuming a normalized zero time according to the reference frequency signal, recording the normalized electromagnetic field value corresponding to the field distribution test signal at the normalized zero time, traversing all field points in space, and recording all normalized electromagnetic field values ​​corresponding to the normalized zero time;

[0042] S3: Draw an electromagnetic field spatial distribution diagram, assign different shades of color according to the normalized electromagnetic field value, draw the electromagnetic field spatial distribution diagram corresponding to the normalized zero moment according to the field distribution spatial coordinates, the normalized electromagnetic field value corresponding to the field distribution spatial coordinates, and the color corresponding to the normalized electromagnetic field value, repeat this step to obtain the electromagnetic field spatial distribution diagram at different moments.

[0043] Furthermore, the transmitter to be tested 5 is connected to channel one of the high-frequency real-time oscilloscope 3 via a coaxial cable 11, for providing a reference frequency signal to the high-frequency real-time oscilloscope 3; the receiving device 10 is connected to channel two of the high-frequency real-time oscilloscope 3 via a coaxial cable 11, for providing a field distribution test signal to the high-frequency real-time oscilloscope 3.

[0044] Furthermore, the normalized zero time is the intersection time of the falling edge of the reference frequency signal and the amplitude of the vertical coordinate, and the normalized electromagnetic field value is the signal amplitude corresponding to the field distribution test signal at the normalized zero time.

[0045] As a preferred embodiment of the present invention, step S1: when conducting a test, the test system is first assembled, and the transmitter 5 to be tested is fixedly mounted on the turntable 6 through the transmitter connecting rod 14. Similarly, the receiving device 10 is fixedly mounted on the receiving electronic control platform 9 through the receiving device connecting rod 15. Relying on the drive motor 13 in the transmitter fixing tool 7 and the receiving electronic control platform 9, the emission angle of the transmitter to be tested 5 and the receiving distance of the receiving device 10 are adjusted, and the voltage source 12 is connected to the frequency diversity array circuit of the transmitter to be tested 5, so that the transmitter to be tested 5 works normally and starts to transmit electromagnetic signals. The receiving device 10 receives the electromagnetic signals, and all of them are displayed and recorded on the high-frequency real-time oscilloscope 3 through the coaxial cable 11.

[0046] Step S2: The entire plane space is traversed by means of the turntable 6 and the receiving electronic control platform 9. The high-frequency real-time oscilloscope 3 collects electromagnetic signal information such as the reference frequency signal and the field distribution test signal at different times in different spaces through the transmitter and the receiving device 10. Figures 1 to 3As shown, when the transmitter 5 to be tested is rotated to a certain angle and the receiving device 10 is moved to a certain spatial position, the high-frequency real-time oscilloscope 3 displays the reference frequency signal and the field distribution test signal respectively. The field distribution at different moments is rapidly time-varying. The reference frequency signal provides a relatively static reference point in time during each acquisition of signal information. The field distribution test signal uses the reference frequency signal as a reference point, and can calibrate the field distribution test signals at different moments and spatial positions in the time domain, thereby achieving equivalent measurement of time-varying electromagnetic fields. This increases the applicability of frequency diversity array rapid time-varying electric field distribution testing without introducing additional costs, and can obtain field distribution data results at multiple moments, greatly improving the measurement effect and accuracy.

[0047] Step S3: When the receiving device 10 moves to a certain spatial position, the display waveform of the high-frequency real-time oscilloscope 3 is as follows: Figure 5 As shown, the intersection of the falling edge of the reference frequency signal and the zero amplitude of the ordinate is taken as the normalized zero moment, and the amplitude value of the field distribution test signal at the time point is obtained with the normalized zero moment as the time point. The amplitude value is the normalized electromagnetic field value at the time point, and the normalized electromagnetic field value is equivalent to the electromagnetic field distribution at the same moment; the above time domain zeroing step is repeated by traversing all field points in the space to obtain the normalized electromagnetic field values ​​at different spatial points and at different times. The normalized zero moment can be assumed based on the waveform of the reference frequency signal, so the values ​​at other moments can be recorded in the same way, as long as the normalized zero moment is used as a reference when collecting data at each field point. In addition, traditional measurement methods cannot measure the spatial distribution of time-varying electromagnetic fields, because the spatial distribution measurement of electromagnetic fields relies on the test probe (or antenna) to traverse in space to obtain the electric field data of each spatial position. This process cannot be completed at the same moment, so the spatial distribution of time-varying electromagnetic fields cannot be obtained. However, due to the introduction of the reference signal, this test method can achieve the equivalent "same moment", as shown in FIG. Figure 6 As shown in the figure, we measured the spatial distribution of the time-varying electromagnetic field with a time variation period of 10 nanoseconds. Traditional testing results may only obtain a single graph, but not the results for the entire time. This greatly shortens the test time and improves the accuracy of the test results.

[0048] Step S4: According to the magnitude of the normalized electromagnetic field value obtained by time domain zeroing processing, different shades of color are assigned to the normalized electromagnetic field values ​​of different magnitudes, and the electromagnetic field spatial distribution diagram corresponding to the normalized zero moment is drawn according to the field distribution spatial coordinates, the normalized electromagnetic field value, and the color corresponding to the normalized electromagnetic field value at the same normalized zero moment, and the diagrams at different moments are drawn separately. An example diagram of the electromagnetic field spatial distribution diagram with a 10 nanosecond time change period is shown in FIG. Figure 6 As shown, the normalized electromagnetic field distribution of different numerical values ​​and the corresponding colors of different shades can fully demonstrate the electromagnetic field distribution at the normalized zero moment and also show the strength of the electromagnetic field.

[0049] It should be noted that the present invention proposes a method for testing the spatial distribution of time-varying electric fields in a frequency diversity array and a corresponding testing device, such as Figures 1 to 6 As shown. The test device consists of the turntable 6, the receiving electronic control platform 9, the transmitter fixing fixture 7 and the high-frequency real-time oscilloscope 3. The transmitter 5 to be tested is fixed on the turntable 6 by the transmitter fixing fixture 7, and the receiving device 10 is fixed on the receiving electronic control platform 9. The transmitter 5 to be tested on the turntable 6 is connected to channel 1 of the high-frequency real-time oscilloscope 3 via the coaxial cable 11 to provide the reference frequency signal; the receiving device 10 is connected to channel 2 of the high-frequency real-time oscilloscope 3 via the coaxial cable 11 to provide the field distribution test signal. The turntable 6 provides the transmitter 5 to be tested with the ability to rotate and scan in the angle dimension, and the receiving electronic control platform 9 provides the receiving device 10 with the ability to translate and scan in the distance dimension.

[0050] During the test process of the test method, the turntable 6 and the receiving electronic control platform 9 can realize the full domain traversal of the plane space, and at the same time, the high-frequency real-time oscilloscope 3 collects and records the data of two channels: the reference frequency signal and the field distribution test signal. This test method solves the problem of the following through the dual signal data of the test equipment: although the field distribution is rapidly time-varying at different times, the presence of the reference frequency signal allows the field distribution test signal to have the reference frequency signal as a "relatively static" reference point in the time domain during each acquisition process. Because the field distribution test signal and the reference frequency signal are acquired simultaneously, the field distribution test signal at different times and different spatial positions can be normalized and calibrated in the time domain with the reference frequency signal as the reference point, thereby achieving equivalent measurement of the time-varying electromagnetic field.

[0051] The test device of the present invention simultaneously collects the reference frequency signal and the field distribution test signal in the entire space. The dual-signal full-space acquisition can not only increase the acquisition range but also improve the applicability of the test method. The test device has a simple structure and is easy to assemble and use. In the test method of the present invention, the reference frequency signal collected by the test device is used as a relatively static reference point of the field distribution test signal in the time domain, as the normalized zero moment, and then the field distribution test signal is subjected to time domain zeroing processing to obtain the normalized electromagnetic field values ​​corresponding to multiple normalized zero moments. The color depth is determined according to the size of the normalized electromagnetic field value, thereby drawing the electromagnetic field distribution diagram at different spaces and times within the cycle, thereby completing the measurement of the spatial distribution of the time-varying electric field of the frequency diversity array, and improving the reference value of the measurement results. Compared with the traditional test method of single measurement data, this test method and the test device do not introduce additional costs and have high practicality, applicability and feasibility.

[0052] The above description is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for testing the spatial distribution of a time-varying electric field in a frequency diversity array, wherein the testing apparatus comprises a transmitting structure for providing rotational scanning in the angular dimension, a receiving structure for providing translational scanning in the distance dimension, and a high-frequency real-time oscilloscope disposed therebetween, characterized in that: The transmitting structure includes a transmitter to be tested, a turntable for mounting the transmitter to be tested, and a transmitter fixing fixture for mounting the turntable. The transmitter to be tested is rotated and scanned on the transmitter fixing fixture via the turntable. The receiving structure includes a transverse track, a receiving electronic control platform provided on the transverse track, and a receiving device provided on the structural electronic control platform. The receiving device is translated and scanned on the transverse track via the structural electronic control platform. The receiving device and the transmitter to be tested are both electrically connected to a high-frequency real-time oscilloscope via a coaxial cable. A voltage source is provided in the transmitter fixing fixture, the transmitter to be tested is electrically connected to the voltage source, the number of the transmitter to be tested is not less than one, and a drive motor is provided in the transmitter fixing fixture that passes through its upper end surface and is connected to the turntable; The outer surface of the turntable is covered with a protective cover, the lower end surface of the turntable is movably connected to the drive motor, and the upper end surface of the turntable is fixedly connected to the transmitter to be tested through the transmitter connecting rod; The upper end surface of the receiving electric control platform is fixedly connected to the receiving device through the receiving device connecting rod, and the lower end surface of the receiving electric control platform is connected to the transverse track through the connecting piece of its own lower end surface, and the connecting piece is covered on the outer surface of the guide track of the transverse track; The high-frequency real-time oscilloscope includes a channel 1 and a channel 2, the transmitter to be tested is electrically connected to the channel 1 via a coaxial cable, and the receiving device is electrically connected to the channel 2 via a coaxial cable; The method for testing the spatial distribution of the time-varying electric field of the frequency diversity array comprises the following steps: Assemble the test equipment, electrically connect the voltage source to the frequency diversity array circuit of the transmitter under test, adjust the turntable and the receiving electronic control platform, and electrically connect the transmitter under test and the receiving device to a high-frequency real-time oscilloscope for collecting the reference frequency signal and the field distribution test signal, respectively; Full-space signal information is collected. The transmitter under test collects reference frequency signals and corresponding reference spatial coordinates at different spatial points at different times under the action of a turntable. At the same time, the receiving device collects field distribution test signals and corresponding field distribution spatial coordinates at different spatial points at different times under the action of a receiving electronic control platform. The reference frequency signal and field distribution test signal are displayed on a high-frequency real-time oscilloscope and the relevant waveforms are recorded. Signal time domain zeroing processing, assuming a normalized zero time according to the reference frequency signal, recording the normalized electromagnetic field value corresponding to the field distribution test signal at the normalized zero time, traversing all field points in space, and recording all normalized electromagnetic field values ​​corresponding to the normalized zero time; Draw an electromagnetic field spatial distribution diagram, assign different shades of color according to the normalized electromagnetic field value, draw the electromagnetic field spatial distribution diagram corresponding to the normalized zero moment according to the field distribution spatial coordinates, the normalized electromagnetic field value corresponding to the field distribution spatial coordinates, and the color corresponding to the normalized electromagnetic field value, repeat this step to obtain the electromagnetic field spatial distribution diagram at different moments.

2. The method for testing the spatial distribution of time-varying electric fields in a frequency diversity array according to claim 1, wherein: The transmitter to be tested is connected to channel 1 of a high-frequency real-time oscilloscope via a coaxial cable, and is used to provide a reference frequency signal to the high-frequency real-time oscilloscope; the receiving device is connected to channel 2 of the high-frequency real-time oscilloscope via a coaxial cable, and is used to provide a field distribution test signal to the high-frequency real-time oscilloscope.

3. The method for testing the spatial distribution of time-varying electric fields in a frequency diversity array according to claim 1, wherein: The normalized zero time is the intersection time of the falling edge of the reference frequency signal and the vertical coordinate amplitude, and the normalized electromagnetic field value is the signal amplitude corresponding to the field distribution test signal at the normalized zero time.

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