Method for generating high-power microwave beat wave

Abstract

The invention particularly relates to a method for generating high-power microwave beat waves, a transmitting array plane of a phased array high-power microwave system is divided into two or more sub-array planes capable of working independently, each sub-array plane is provided with an independent feed network and frequency synthesizers, and the multiple frequency synthesizers can achieve time alignment through synchronizing signals. And microwave excitation signals with the same or different carrier frequencies can be generated. The plurality of frequency synthesizers output different carrier frequency pulses, each independent subarray surface amplifies signals and radiates the signals outwards, and high-power beat wave pulses can be formed through space synthesis. The types of radiation pulse waveforms of the phased array high-power microwave system are increased, the strike distance of the high-power microwave system is increased, the universality of a killing target is improved, and the method has the advantages that the beat wave generation method is easy to implement, and the pulse waveforms are flexible and changeable.

Description

Technical Field

[0001] This invention relates to the field of radar technology, and more specifically to a method for generating high-power microwave beat waves. Background Technology

[0002] In related technologies, high-power microwave pulses with different carrier frequencies and modulation methods exhibit significantly different damage thresholds for UAV targets. Beat pulses can effectively reduce the damage threshold for some aircraft types. Traditional high-power microwave systems use two microwave oscillators of different frequencies to generate beat waves through device synthesis. However, this method places high demands on the power tolerance of the synthesizing devices and makes it impossible to synthesize power at the same frequency, greatly limiting the waveform pattern of the radiated pulse. Generating beat waves using traditional high-power microwave systems is technically challenging, has limited waveform patterns, and lacks target universality.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] This invention provides a method and system for generating high-power microwave beat waves, which can overcome the defects existing in the prior art to a certain extent.

[0005] Other features and advantages of the invention will become apparent from the following detailed description, or may be learned in part by practice of the invention.

[0006] According to a first aspect of the present invention, a method for generating high-power microwave beat waves is provided, comprising: Divide the radiating surface of the phased array high-power microwave system into at least two independent sub-arrays; Each independent subarray is equipped with an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna; The control unit outputs time signals and local oscillator signals to each frequency synthesizer to ensure that the time reference and initial phase of each frequency synthesizer remain consistent. The control unit sends different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies; The microwave power amplifier is controlled to amplify the microwave pulse signal, and the amplified pulse signal is transmitted using a radiating antenna, so that at least two pulse signals are combined into a beat pulse in space.

[0007] In some exemplary embodiments, the radiating array of a high-power microwave system is divided into at least two independent sub-arrays, including: The radiation array is divided equally in the horizontal and / or vertical directions to obtain at least two independent sub-arrays.

[0008] In some exemplary embodiments, The method further includes: Obtain target beat wave information; The target beat wave is decomposed using the control unit to determine the microwave information to be radiated corresponding to the number of each independent subarray. Control signals are generated based on the microwave information to be radiated and sent to the frequency synthesizers corresponding to each independent subarray. The control frequency synthesizer processes the control signal, generates the target microwave pulse, and then uses the corresponding independent subarray to transmit the target microwave pulse.

[0009] According to a second aspect of the present invention, a system for generating high-power microwave beat waves is provided, comprising: The radial array is symmetrically divided into at least two independent sub-arrays; Each independent subarray is connected to an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna; The control unit is used to output time signals and local oscillator signals to each frequency synthesizer to keep the time reference and initial phase of each frequency synthesizer consistent; and to send different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies; and to use a radiating antenna to transmit the pulse signal amplified by the microwave power amplifier so that at least two pulse signals are synthesized into a beat wave pulse in space.

[0010] In some exemplary embodiments, the radiating array is divided into at least two independent sub-arrays in the horizontal and / or vertical directions.

[0011] In some exemplary embodiments, the control unit is used to acquire target beat wave information and perform decomposition processing to determine the microwave information to be radiated corresponding to the number of independent subarrays; generate control signals based on the microwave information to be radiated and send them to the frequency synthesizers corresponding to each independent subarray; control the frequency synthesizers to process the control signals, generate target microwave pulses; and use the corresponding independent subarrays to transmit the target microwave pulses.

[0012] The method provided in the embodiments of this invention divides the radiating surface of a phased array high-power microwave system into at least two independent sub-arrays, and configures each independent sub-array with an independent frequency synthesizer, feed network, microwave power amplifier, and radiating antenna. This allows multiple frequency synthesizers to achieve time alignment via a synchronization signal, enabling the generation of microwave excitation signals with the same or different carrier frequencies. Multiple frequency synthesizers output pulses of different carrier frequencies, and each independent sub-array amplifies and radiates the signals outwards. Through spatial synthesis, high-power beat pulses can be formed. This invention increases the types of radiated pulse waveforms in a phased array high-power microwave system, which is beneficial for extending the radiation distance of the high-power microwave system, improving its versatility in processing different targets, and features easy implementation of the beat pulse generation method and flexible and varied pulse waveforms.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0015] Figure 1 The diagram illustrates an exemplary embodiment of the present invention: a method for generating high-power microwave beat waves. Figure 2 This schematic diagram illustrates a system with independent left and right sub-arrays, as exemplified by an embodiment of the present invention. Figure 3 This schematic diagram illustrates a system with vertically independent sub-arrays, as exemplified by an embodiment of the present invention. Figure 4 The diagram illustrates a beat pulse synthesized from two different frequency signals, as an exemplary embodiment of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not all of them. In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances. In addition, the accompanying drawings are schematic illustrations of the present invention.

[0017] To address the shortcomings and deficiencies of existing technologies, this exemplary embodiment provides a method for generating high-power microwave beat waves, applicable to a solid-state phased array high-power microwave system. (Reference) Figure 1 As shown, the method may specifically include: Step S11: Divide the radiating array of the phased array high-power microwave system into at least two independent sub-arrays; Step S12: Configure an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna for each independent subarray. Step S13: The control unit outputs time signals and local oscillator signals to each frequency synthesizer to ensure that the time reference and initial phase of each frequency synthesizer remain consistent. Step S14: The control unit sends different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies. Step S15: Control the microwave power amplifier to amplify the microwave pulse signal, and use the radiating antenna to transmit the amplified pulse signal so that at least two pulse signals can be combined into a beat pulse in space.

[0018] The steps of the method for generating high-power microwave beat waves in this exemplary embodiment will now be described in more detail with reference to the accompanying drawings and embodiments.

[0019] In step S11, the radiating array of the phased array high-power microwave system is divided into at least two independent sub-arrays.

[0020] For example, dividing the radiating array of a high-power microwave system into at least two independent subarrays includes: dividing the radiating array into equal parts in the horizontal and / or vertical directions to obtain at least two independent subarrays.

[0021] Specifically, the original radiating array can be divided into two symmetrical, independent sub-arrays. For example, refer to... Figure 2 As shown, the radiation array can be uniformly divided vertically. Alternatively, refer to... Figure 3 As shown, the radiation array can also be divided into equal parts in the horizontal direction.

[0022] Alternatively, in some embodiments, the radiating array may be symmetrically divided into 4, 6, or 8 independent sub-arrays.

[0023] In step S12, each independent subarray is configured with an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna.

[0024] For example, refer to Figure 2 , Figure 3 As shown, each independent subarray can be configured with an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna, and the components can be connected; thus, multiple subsystems can be obtained, each subsystem including an independent subarray, frequency synthesizer, feed network, microwave power amplifier and radiating antenna connected in sequence.

[0025] In step S13, the control unit outputs time signals and local oscillator signals to each frequency synthesizer to ensure that the time reference and initial phase of each frequency synthesizer remain consistent.

[0026] For example, a control unit can be provided and connected to each frequency synthesizer. The control unit can output time and local oscillator signals to each frequency synthesizer to ensure that the time reference and initial phase of the signals generated by each frequency synthesizer are consistent.

[0027] For example, in the initial state, the control unit sends a synchronization signal to the frequency synthesizer of each subsystem, so that each frequency synthesizer can be time-aligned according to the synchronization signal.

[0028] In step S14, the control unit sends different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies.

[0029] For example, during the control process, the control unit can send different control signals to each frequency synthesizer, and carry different carrier frequency pulse information in the control signals. Each frequency synthesizer generates microwave excitation signals with the same or different carrier frequencies according to the control signals from the control unit. Each independent subarray amplifies the signals and radiates them outward. Through spatial synthesis, high-power beat pulses can be formed.

[0030] For example, considering two subsystems, the control unit generates a first control signal and a second control signal; it sends the first control signal to a first frequency synthesizer; the first frequency synthesizer generates a microwave pulse with frequency f1. The control unit sends the second control signal to a second frequency synthesizer, which generates a microwave pulse with frequency f2. When f1 ≠ f2, the two microwave signals are amplified by power and radiated by an antenna, synthesizing into a beat wave pulse in space, with a time-domain waveform as shown below. Figure 4 As shown.

[0031] In step S15, the microwave power amplifier is controlled to amplify the microwave pulse signal, and the amplified pulse signal is transmitted using a radiating antenna, so that at least two pulse signals are combined into a beat pulse in space.

[0032] Specifically, the radiating antenna of each subsystem includes multiple antenna elements, and each antenna element can be connected to a microwave power amplifier. The microwave pulses output by the frequency synthesizer can be distributed to each microwave power amplifier through a feed network. After the microwave pulse signal is amplified, it is transmitted using independent subarrays. High-power beat pulses can be formed through spatial synthesis.

[0033] For example, the method further includes: Step S21: Obtain target beat wave information; Step S22: Use the control unit to decompose the target beat wave and determine the microwave information to be radiated corresponding to the number of each independent subarray. Step S23: Generate control signals based on the microwave information to be radiated, and send them to the frequency synthesizers corresponding to each independent subarray. Step S24: The control frequency synthesizer processes the control signal to generate the target microwave pulse; and uses the corresponding independent subarray to transmit the target microwave pulse.

[0034] Specifically, the phased array high-power microwave system can also be connected to a host computer, allowing users to create high-power microwave beat wave transmission missions and configure the carrier frequency of the target beat wave. The host computer can then send the target beat wave information to the control unit. In this example embodiment, a system for generating high-power microwave beat waves can also be provided, applied to the method described above.

[0035] refer to Figure 2 As shown, the system includes a radiating array, which is symmetrically divided into at least two independent sub-arrays (204, 205); each independent sub-array is connected to an independent frequency synthesizer 202, a feed network 203, a microwave power amplifier, and a radiating antenna 204.

[0036] The control unit 201 is connected to each frequency synthesizer 202 and is used to output time signals and local oscillator signals to each frequency synthesizer 202 to keep the time reference and initial phase of each frequency synthesizer consistent; and to send different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies; and to use a radiating antenna to transmit the pulse signals amplified by the microwave power amplifier so that at least two pulse signals are synthesized into beat pulses in space.

[0037] For example, refer to Figure 2 As shown, the radiating array is divided into at least two independent sub-arrays in the vertical direction. (Reference) Figure 3 As shown, the radiating array can also be divided into at least two independent sub-arrays in the horizontal direction.

[0038] Of course, in some other exemplary embodiments, the entire array can also be divided into multiple independent subarrays.

[0039] For example, the control unit can obtain user-defined target beat wave information from the host computer and decompose it to determine the microwave information to be radiated corresponding to the number of independent subarrays; generate control signals based on the microwave information to be radiated and send them to the frequency synthesizers corresponding to each independent subarray; control the frequency synthesizers to process the control signals, generate target microwave pulses; and use the corresponding independent subarrays to transmit the target microwave pulses.

[0040] For example, the control unit can decompose the target beat wave information to obtain the initial microwave information for each path, and then perform term shifting processing on the initial microwaves of each path to generate the microwave information to be radiated. The term shifting value can be configured based on the elevation angle, azimuth angle, and distance between adjacent independent subarrays of the target beam.

[0041] The method and system provided by this invention divide the transmitting surface of a phased array high-power microwave system into two or more independently operating sub-arrays. Each sub-array has an independent feed network and frequency synthesizer. Multiple frequency synthesizers can be time-aligned via a synchronization signal and are capable of generating microwave excitation signals with the same or different carrier frequencies. Multiple frequency synthesizers output pulses of different carrier frequencies, and each independent sub-array amplifies and radiates the signals outwards. Through spatial synthesis, high-power beat pulses can be formed.

[0042] This invention solves the problems of high technical difficulty, limited waveform patterns, and insufficient target universality in generating beat waves in traditional high-power microwave systems; and it also solves the problem that existing phased array high-power microwave systems can only generate frequency-modulated and phase-modulated pulses, but cannot generate beat wave pulses.

[0043] The technical solution of the present invention can increase the types of radiation pulse waveforms of phased array high-power microwave systems, which is beneficial to extend the strike range of high-power microwave systems and improve the universality of killing targets. It has the characteristics of easy implementation of the beat wave generation method and flexible and varied pulse waveforms.

[0044] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0045] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for generating high-power microwave beat waves, characterized in that, include: Divide the radiating surface of the phased array high-power microwave system into at least two independent sub-arrays; Each independent subarray is equipped with an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna; The control unit outputs time signals and local oscillator signals to each frequency synthesizer to ensure that the time reference and initial phase of each frequency synthesizer remain consistent. The control unit sends different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies; The microwave power amplifier is controlled to amplify the microwave pulse signal, and the amplified pulse signal is transmitted using a radiating antenna, so that at least two pulse signals are combined into a beat pulse in space.

2. The method according to claim 1, characterized in that, The radiation array of a high-power microwave system is divided into at least two independent sub-arrays, including: The radiation array is divided equally in the horizontal and / or vertical directions to obtain at least two independent sub-arrays.

3. The method according to claim 1, characterized in that, The method further includes: Obtain target beat wave information; The target beat wave is decomposed using the control unit to determine the microwave information to be radiated corresponding to the number of each independent subarray. Control signals are generated based on the microwave information to be radiated and sent to the frequency synthesizers corresponding to each independent subarray. The control frequency synthesizer processes the control signal, generates the target microwave pulse, and then uses the corresponding independent subarray to transmit the target microwave pulse.

4. A system for generating high-power microwave beat waves, applied to the method described in any one of claims 1-3, characterized in that, The system includes: The radial array is symmetrically divided into at least two independent sub-arrays; Each independent subarray is connected to an independent frequency synthesizer, feed network, microwave power amplifier and radiating antenna; The control unit is used to output time signals and local oscillator signals to each frequency synthesizer to keep the time reference and initial phase of each frequency synthesizer consistent; and to send different control signals to each frequency synthesizer to control each frequency synthesizer to generate microwave pulses of different frequencies; and to use a radiating antenna to transmit the pulse signal amplified by the microwave power amplifier so that at least two pulse signals are synthesized into a beat wave pulse in space.

5. The system according to claim 4, characterized in that, The radiating array is divided into at least two independent sub-arrays in the horizontal and / or vertical directions.

6. The system according to claim 4, characterized in that, The control unit is used to acquire target beat wave information and perform decomposition processing to determine the microwave information to be radiated corresponding to the number of each independent subarray. Control signals are generated based on the microwave information to be radiated and sent to the frequency synthesizers corresponding to each independent subarray. The frequency synthesizers process the control signals and generate the target microwave pulse. It also utilizes the corresponding independent subarrays to transmit target microwave pulses.

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