A Test Method and System for the High-Power Microwave Field Strength Uniform Region of a Lens Antenna

Abstract

This specification discloses a method and system for testing the high-power microwave field strength uniform region of a lens antenna, which relates to the field of electromagnetic pulse field strength testing, and includes: S1. Set the distance between the receiving antenna and the lens antenna; S2. When determining that the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position; S3. When determining that the field strength value received by the receiving antenna reaches a preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position; S4. Construct a circular test surface according to the first position and the second position; S5. Divide the arc of the circular test surface equally and mark the equally divided points on the arc; S6. Judge whether the field strength values received by the receiving antennas placed at each equally divided point all meet the preset threshold. If so, output the circular test surface.

Description

Technical Field

[0001] The present invention belongs to the field of electromagnetic pulse field strength testing, and particularly relates to a method for testing the high-power microwave field strength uniform region of a lens antenna. Background Art

[0002] A lens antenna is an antenna that can emit plane electromagnetic waves and is widely used in the communication field.

[0003] The academic community defines electromagnetic waves with a power of 0.01 - 100 GW and a frequency of 0.1 - 300 GHz as high-power microwaves (HPM). When an electronic device operates in a high-power microwave environment, the strong electromagnetic field generated by the high-power microwave will be coupled into the electronic device through apertures, cables, etc., causing damage to the electronic device.

[0004] The high-power microwave radiation effect test refers to placing the tested electronic device in a high-power microwave radiation field environment for effect testing to examine its performance indicators. To ensure the accuracy and reliability of the high-power microwave radiation effect test data, it is necessary to ensure that the field strength of the radiation field where the tested electronic device is located is sufficiently uniform. Due to the characteristics of high power, narrow pulse, and poor consistency of the electromagnetic pulse of the high-power microwave, the traditional method of using a field strength probe to test the field strength uniform region of the radiation field is difficult to obtain a sufficiently uniform field strength uniform region, and the test method for the high-power microwave radiation field strength uniform region of the lens antenna is still blank. Summary of the Invention

[0005] The present invention provides a method for testing the high-power microwave radiation field strength uniform region of a lens antenna to solve the problem that the traditional method of using a field strength probe to test the field strength uniform region of the radiation field is difficult to obtain an accurate field strength uniform region.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] This specification provides a method for testing the high-power microwave radiation field strength uniform region of a lens antenna, including:

[0008] S1. Set the distance between the receiving antenna and the lens antenna, where the lens antenna is used to emit high-power microwaves and the receiving antenna is used to receive high-power microwaves;

[0009] S2. When the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position;

[0010] S3. When the field strength value received by the receiving antenna reaches a preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position, and the position of the receiving antenna is adjusted by moving horizontally along the ground direction starting from the first position;

[0011] S4. With the first position as the origin and the distance between the first position and the second position as the radius, construct a circular test surface;

[0012] S5. Based on the preset equal division rule, equally divide the arc of the circular test surface and mark the equal division points on the arc;

[0013] S6. Determine whether the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold. If so, output the circular test surface, and the circular test surface is the uniform field strength region of the radiation field of the lens antenna under the distance condition corresponding to the distance.

[0014] This specification also provides a test system for the uniform field strength region of the high-power microwave radiation field of a lens antenna, including:

[0015] A high-power microwave excitation source, a lens antenna, a receiving antenna, a robotic arm, and a processor, where:

[0016] High-power microwave transmitting subsystem: Composed of a high-power microwave excitation source and a lens antenna, where the high-power microwave excitation source is connected to the lens antenna and is used to excite and transmit high-power microwaves;

[0017] High-power microwave receiving subsystem: Composed of a receiving antenna and a robotic arm, where the receiving antenna is connected to the robotic arm and is used to receive high-power microwaves and adjust the position of the receiving antenna;

[0018] Control subsystem: Composed of a processor, the control system is respectively connected to the high-power microwave transmitting subsystem and the high-power microwave receiving subsystem, and is used to control the high-power microwave transmitting subsystem to excite and transmit high-power microwaves, control the high-power microwave receiving subsystem to receive high-power microwaves and adjust the position of the receiving antenna. The processor specifically executes the following steps:

[0019] Set the distance between the receiving antenna and the lens antenna;

[0020] When the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position;

[0021] When the field strength value received by the receiving antenna reaches the preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position;

[0022] With the first position as the origin and the distance between the first position and the second position as the radius, construct a circular test surface;

[0023] Based on a preset equal division rule, the arc of the circular test surface is equally divided and equal division points are marked on the arc.

[0024] Determine whether the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold. If so, the area enclosed by the arc is delimited as the field strength uniform area of the lens antenna under the distance condition corresponding to the distance.

[0025] The above at least one technical solution adopted in this specification can achieve the following beneficial effects:

[0026] Set the distance between the receiving antenna and the lens antenna, construct a circular test surface according to the position of the receiving antenna, and continuously adjust the size of the circular test surface until the field strength values on the arc of the circular test surface all meet the preset threshold, so as to output a field strength uniform area of the high-power microwave radiation field of the lens antenna that is sufficiently uniform under the set distance condition. Description of the Drawings

[0027] Figure 1 It is a schematic flow chart of a method for testing the field strength uniform area of the high-power microwave radiation field of a lens antenna provided by an embodiment of this specification;

[0028] Figure 2 It is a schematic diagram of a system for testing the field strength uniform area of the high-power microwave radiation field of a lens antenna provided by an embodiment of this specification;

[0029] Figure 3 It is a schematic diagram of the positional relationship between a lens antenna and a test surface provided by an embodiment of this specification. In the figure, 1 represents the lens antenna, 2 represents the circular test surface, and 3 represents the equal division points on the arc of the circular test surface. Detailed Embodiments

[0030] To make the purpose, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of this specification.

[0031] The following will describe in detail the technical solutions provided by each embodiment of this specification with reference to the drawings.

[0032] Figure 1Schematic flowchart of a method for testing the field strength uniform region of the high-power microwave radiation field of a lens antenna provided by an embodiment of this specification. This method can be built into the processor of the test system for the field strength uniform region of the high-power microwave radiation field. The method can specifically include the following steps:

[0033] Step 102: Set the distance between the receiving antenna and the lens antenna. The lens antenna is used to emit high-power microwaves, and the receiving antenna is used to receive high-power microwaves.

[0034] Among them, a lens antenna refers to an antenna that can convert the spherical wave or cylindrical wave of a power source or a line source into a plane wave through electromagnetic waves, thereby obtaining a pencil-shaped, fan-shaped or other shaped beam.

[0035] It should be noted that one implementation of step 102 can be:

[0036] The test system reads the input distance value, and the processor of the test system controls the robotic arm of the test system to adjust the distance between the receiving antenna and the lens antenna according to the distance value.

[0037] Furthermore, after the test system completes the adjustment of the distance between the receiving antenna and the lens antenna, the processor of the test system also needs to control the robotic arm of the test system to adjust the height of the receiving antenna so that the height of the receiving antenna is on the same horizontal plane as the lens antenna, and the receiving antenna is aligned with the center of the lens antenna.

[0038] Furthermore, the test system also needs to read the configuration parameters of the system. The relevant configuration parameters include frequency, pulse width, repetition frequency, and amplitude. The processor of the test system completes the parameter configuration of the high-power microwave excitation source of the test system according to the read configuration parameters.

[0039] Based on this, by adjusting the height of the receiving antenna and configuring the relevant parameters of the test system, the test system can reach a stable working state and ensure the stable operation of the system.

[0040] Step 104: When it is determined that the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position.

[0041] It should be noted that one implementation of step 104 can be:

[0042] The processor of the test system controls the robotic arm of the test system to slightly adjust the position of the receiving antenna in the up and down direction and transmits the real-time position of the receiving antenna to the processor. At the same time, the receiving antenna continuously receives the field strength value at the position where it is located and transmits the received field strength value to the processor. The processor saves the received field strength value and the corresponding real-time position information of the receiving antenna in the data linked list of the processor. The processor can use the bubble sort algorithm to judge the maximum value of the field strength values saved in the data linked list, and the processor records the maximum value and records the position information of the receiving antenna corresponding to the maximum value as the first position.

[0043] Among them, the bubble sort algorithm is a data sorting method and is often used to find the maximum or minimum value.

[0044] Step 106: When it is determined that the field strength value received by the receiving antenna reaches the preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position. The position of the receiving antenna is adjusted by moving horizontally along the ground direction with the first position set as the starting point.

[0045] Among them, an optional setting method for the preset threshold is 0.707 times the maximum value.

[0046] It should be noted that one implementation method of step 106 can be:

[0047] The processor of the test system controls the robotic arm to move the receiving antenna and transmits the real-time position of the receiving antenna to the processor. At the same time, the receiving antenna continuously receives the field strength value at the position where it is located and transmits the received field strength value to the processor. The processor saves the received field strength value and the corresponding real-time position information of the receiving antenna in the data linked list. The processor can use the insertion sort algorithm to judge the maximum value of the field strength values in the data linked list and the data when the real-time position of the corresponding receiving antenna is farthest from the first position. The processor records the position of the receiving antenna at this time as the second position.

[0048] Among them, the insertion sort algorithm is a sorting algorithm and can be used to find the maximum or minimum value in the data.

[0049] Among them, an optional rule for the processor of the test system to control the robotic arm to move the receiving antenna:

[0050] The processor of the test system controls the robotic arm to move the receiving antenna in a horizontal straight line trajectory starting from the first position and moving towards the direction close to the lens antenna.

[0051] Step 108: Taking the first position as the origin and the interval between the first position and the second position as the radius, construct a circular test surface.

[0052] It should be noted that one implementation method of step 108 can be:

[0053] The processor of the test system calculates the interval between the first position and the second position, and in the test field map built in the processor, with the first position as the origin and the interval as the radius, a circular test surface is delineated on the test field map.

[0054] Based on this, any point on the arc of the circular test surface has the same distance from the center of the circle. By using the circular test surface to test the field strength uniformity, it is easier to obtain a region with uniform field strength.

[0055] Step 110: Based on a preset equal division rule, the arc of the circular test surface is equally divided and equal division points are marked on the arc;

[0056] Among them, the preset equal division rule means:

[0057] Taking the second position as the first equal division point on the arc of the circular test surface, and starting from the first equal division point, the arc is equally divided into eight parts in the clockwise direction.

[0058] Optionally, starting from the first equal division point, the arc is equally divided into eight parts in the counterclockwise direction.

[0059] It should be noted that one implementation manner of step 110 can be:

[0060] The processor of the test system reads the circular test surface delineated on the built-in test field map, and reads the built-in equal division rule. Starting from the second position, the circular test surface is equally divided, and equal division points are marked on the arc of the circular test surface.

[0061] Step 112: Determine whether the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold. If so, output the circular test surface, and the circular test surface is the field strength uniform region of the radiation field of the lens antenna under the corresponding distance condition.

[0062] Among them, an optional setting method for the preset threshold is 0.707 times the maximum value.

[0063] It should be noted that one implementation manner of step 112 can be:

[0064] The processor of the test system controls the robotic arm to move the receiving antenna, and sequentially moves the receiving antenna to the equal division points on the arc of the circular test surface. The receiving antenna transmits the field strength received at each equal division point to the processor, and the processor determines whether the received field strength values all meet the preset threshold. If the field strength values all meet the preset threshold, the test system outputs the circular test surface, and the circular test surface is the field strength uniform region of the high-power microwave radiation field of the lens antenna under the input distance of the test system.

[0065] Step 114: If not, re-determine a point between the first position and the second position and mark it as the new second position, and re-execute steps 108-112 until the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold.

[0066] Optionally, the distance between the second position marked this time and the first position is less than the distance between the second position marked last time and the first position.

[0067] Optionally, the distance between the second position marked this time and the second position marked last time is within a preset distance range.

[0068] It should be noted that one implementation manner of step 114 can be:

[0069] If the field strength values do not all meet the preset threshold, the processor controls the robotic arm to start from the second position and move the receiving antenna in the direction gradually approaching the first position according to a preset movement value, and set the position after the receiving antenna is moved as the new second position. The preset movement value is set according to the experimental data of those skilled in the art, and the optional value range of the preset movement value is 0.1m to 0.5m. The processor re-executes steps 108-step 112 until the field strength values received by the processor all meet the preset threshold, and the test system outputs the circular test surface at this time.

[0070] Based on this, the processor determines whether the field strength values on the arc of the circular test surface meet the preset threshold at the same time. In addition, when the field strength values on the arc of the circular test surface cannot meet the preset threshold at the same time, the processor can also adjust the size of the circular test surface until the field strength values on the arc of the circular test surface meet the preset threshold at the same time, thus ensuring that the field strength values in the area enclosed by the circular test surface are sufficiently uniform.

[0071] Figure 2 It is a schematic diagram of a test system for the field strength uniform area of the high-power microwave radiation field of a lens antenna provided by an embodiment of this specification. The system includes a high-power microwave excitation source, a lens antenna, a receiving antenna, a robotic arm, and a processor. Specifically, the system may include:

[0072] High-power microwave transmitting subsystem 202: Composed of a high-power microwave excitation source and a lens antenna, wherein the high-power microwave excitation source is connected to the lens antenna for exciting and transmitting high-power microwave;

[0073] High-power microwave receiving subsystem 204: Composed of a receiving antenna and a robotic arm, wherein the receiving antenna is connected to the robotic arm for receiving high-power microwave and adjusting the position of the receiving antenna;

[0074] Control Subsystem 206: Composed of a processor, the control system is respectively connected to the high-power microwave transmitting subsystem and the high-power microwave receiving subsystem, and is used to control the high-power microwave transmitting subsystem to excite and emit high-power microwaves, and control the high-power microwave receiving subsystem to receive high-power microwaves and adjust the position of the receiving antenna. The processor specifically performs the following steps:

[0075] Step 1: Set the distance between the receiving antenna and the lens antenna;

[0076] Optionally, before setting the distance between the receiving antenna and the lens antenna, it further includes:

[0077] Configure the parameter values of the relevant parameters of the high-power microwave excitation source;

[0078] Wherein, the high-power microwave excitation source is connected to the lens antenna and is used to excite high-power microwaves; the relevant parameters include frequency, pulse width, repetition frequency, and amplitude.

[0079] Step 2: When the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position;

[0080] Optionally, collect the field strength values received by the receiving antenna when the receiving antenna is moved to different positions;

[0081] Based on the field strength value received by the receiving antenna, determine the position of the receiving antenna when the field strength value received by the receiving antenna reaches the maximum value.

[0082] Optionally, the height of the receiving antenna is on the same horizontal plane as the lens antenna, and the receiving antenna is aligned with the center of the lens antenna.

[0083] Step 3: When the field strength value received by the receiving antenna reaches a preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position;

[0084] Step 4: Taking the first position as the origin and the interval between the first position and the second position as the radius, construct a circular test surface;

[0085] Step 5: Based on a preset equal division rule, equally divide the arc of the circular test surface and mark the equal division points on the arc;

[0086] Optionally, a preset equal division rule includes:

[0087] Set the second position as the first equal division point on the arc, and equally divide the arc into eight parts starting from the first equal division point.

[0088] Step 6: Determine whether the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold. If so, demarcate the area enclosed by the circular arc as the field strength uniform area of the lens antenna under the distance condition corresponding to the distance.

[0089] If not, re-determine a point between the first position and the second position and mark it as the new second position;

[0090] Re-execute Steps 4 - 6 until the field strength values received by the receiving antennas placed at each equal division point all meet the preset threshold.

[0091] Optionally, a method for re-determining a point between the first position and the second position includes:

[0092] The distance between the second position marked this time and the first position is less than the distance between the second position marked last time and the first position. The distance between the second position marked this time and the second position marked last time is within the preset distance range.

[0093] Optionally, reset the distance between the receiving antenna and the lens antenna, re-execute Steps 1 - 6, and output a new circular test surface, which is the field strength uniform area of the lens antenna under the distance condition corresponding to the new distance.

[0094] Based on this, the high-power microwave receiving subsystem is controlled by the control system to receive high-power microwaves and adjust the position of the receiving antenna until the field strength values received by the receiving antenna all meet the preset threshold, so as to accurately construct a field strength fully uniform area of the high-power microwave radiation field of a lens antenna. This system can also change the initially input distance value and output the field strength fully uniform area of the high-power microwave radiation field of the lens antenna under different distance conditions.

[0095] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for testing the field strength uniform region of the high-power microwave radiation field of a lens antenna, characterized in that Including: S1. Set the distance between the receiving antenna and the lens antenna, where the lens antenna is used to transmit high-power microwaves and the receiving antenna is used to receive high-power microwaves; S2. Determine the position of the receiving antenna when the field strength value received by the receiving antenna reaches the maximum value, and mark it as the first position; S3. Determine the position of the receiving antenna when the field strength value received by the receiving antenna reaches a preset threshold and the receiving antenna is farthest from the first position, and mark it as the second position. The position of the receiving antenna is adjusted by moving horizontally along the direction parallel to the ground with the first position set as the starting point; S4. With the first position as the origin and the interval between the first position and the second position as the radius, construct a circular test surface; S5. Based on a preset equal division rule, equally divide the arc of the circular test surface and mark the equal division points on the arc; S6. Determine whether the field strength values received by the receiving antenna placed at each equal division point all meet the preset threshold. If so, output the circular test surface, and the circular test surface is the field strength uniform area of the radiation field of the lens antenna under the distance condition corresponding to the distance.

2. The method according to claim 1, characterized in that, It further includes: If not, re-determine a point between the first position and the second position and mark it as the new second position; Re-execute steps S4 - S6 until the field strength values received by the receiving antenna placed at each equal division point all meet the preset threshold.

3. The method according to claim 2, wherein the distance between the second position marked this time and the first position is less than the distance between the second position marked last time and the first position.

4. The method according to claim 2, wherein the distance between the second position marked this time and the second position marked last time is within a preset distance range.

5. The method according to claim 1, characterized in that, Before setting the distance between the receiving antenna and the lens antenna, it further includes: Configuring the parameter values of the relevant parameters of the high-power microwave excitation source; wherein, the high-power microwave excitation source is connected to the lens antenna and is used to excite high-power microwaves; the relevant parameters include frequency, pulse width, repetition frequency, amplitude.

6. The method according to claim 1, wherein the height of the receiving antenna is on the same horizontal plane as the lens antenna, and the receiving antenna is aligned with the center of the lens antenna.

7. The method according to claim 1, characterized in that, The determining the position of the receiving antenna when the field strength value received by the receiving antenna reaches the maximum value includes: Collecting the field strength values received by the receiving antenna when the receiving antenna is moved to different positions; Based on the field strength values received by the receiving antenna, determining the position of the receiving antenna when the field strength value received by the receiving antenna reaches the maximum value.

8. The method according to claim 1, characterized in that, The preset equal division rule includes: Setting the second position as the first equal division point on the arc, and equally dividing the arc into eight parts with the first equal division point as the starting point.

9. The method according to claim 1, wherein After outputting the circular test surface and designating the area enclosed by the circular test surface as the field strength uniform area of the radiation field of the lens antenna under the distance condition corresponding to the distance, it further includes: Reset the distance between the receiving antenna and the lens antenna, and re-execute steps S1 - S6 to output a new circular test surface, where the new circular test surface is the region with uniform field strength of the radiation field of the lens antenna under the distance condition corresponding to the new distance.

10. A test system for the field strength uniform region of the high-power microwave radiation field of a lens antenna, characterized in that, It includes a high-power microwave excitation source, a lens antenna, a receiving antenna, a robotic arm, and a processor, where: High-power microwave transmitting subsystem: It consists of a high-power microwave excitation source and a lens antenna, where the high-power microwave excitation source is connected to the lens antenna and is used to excite and transmit high-power microwaves. High-power microwave receiving subsystem: It consists of a receiving antenna and a robotic arm, where the receiving antenna is connected to the robotic arm and is used to receive high-power microwaves and adjust the position of the receiving antenna. Control subsystem: It consists of a processor. The control subsystem is respectively connected to the high-power microwave transmitting subsystem and the high-power microwave receiving subsystem, and is used to control the high-power microwave transmitting subsystem to excite and transmit high-power microwaves, and control the high-power microwave receiving subsystem to receive high-power microwaves and adjust the position of the receiving antenna. The processor specifically executes the following steps: Set the distance between the receiving antenna and the lens antenna. When it is determined that the field strength value received by the receiving antenna reaches the maximum value, determine the position of the receiving antenna and mark it as the first position. When it is determined that the field strength value received by the receiving antenna reaches a preset threshold and the receiving antenna is farthest from the first position, determine the position of the receiving antenna and mark it as the second position. Taking the first position as the origin and the interval between the first position and the second position as the radius, construct a circular test surface. Based on a preset equal division rule, equally divide the arc of the circular test surface and mark the equal division points on the arc. Judge whether the field strength values received by the receiving antenna placed at each equal division point all meet the preset threshold. If so, delimit the region enclosed by the arc as the region with uniform field strength of the radiation field of the lens antenna under the distance condition corresponding to the distance.

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