A method for integrating a shipboard array antenna with a stealth radome

Abstract

The application provides a shipborne integrated array antenna and stealth radome integrated design method, reasonably allocates performance indexes of the integrated antenna and the stealth radome according to the use requirements of the shipborne equipment, selects a local array surface and a radome with a proper size to perform electromagnetic performance iterative optimization, and determines the final technical requirements of the integrated array antenna and the stealth radome through a reasonable index evaluation system, so that the function of ensuring that various functional performance indexes of the shipborne integrated array antenna after being installed in the radome meet the overall requirements of the ship is realized. The application helps the radome designer to determine the performance parameters of the radome, thereby reducing the design iteration times of the radome; and the overall performance of the antenna and the antenna array under the shipborne environment is accurately evaluated, and the accuracy of the antenna performance evaluation under the shipborne environment is improved.

Description

Technical Field

[0001] This invention belongs to the field of ship design technology, specifically relating to an integrated design method for shipborne integrated array antenna and stealth radome. Background Technology

[0002] A crucial aspect of shipboard radar stealth design is the radar stealth design of sensor devices, particularly antenna systems. To address the radar stealth challenges of integrated antennas, they are typically encapsulated using stealth radomes with frequency selectivity. These electromagnetically functional stealth radomes ensure normal antenna operation while simultaneously enhancing radar stealth performance. Electromagnetically functional stealth radomes generally employ subwavelength electromagnetic structures to control parameters such as frequency, amplitude, and phase of electromagnetic waves. Compared to traditional wave-transparent radomes, these stealth radomes are more complex to design and use.

[0003] Although radar stealth radomes have a significant impact on the radar stealth performance of integrated array antennas and even the entire ship, there are still shortcomings in the integrated design of integrated array antennas and radar stealth radomes. In particular, systematic design and optimization have not yet been carried out at the overall ship level, resulting in some indicators of integrated array antennas and radar stealth radomes failing to meet expected requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an integrated design method for shipborne integrated array antenna and stealth radome, so as to ensure that the various functional performance indicators of shipborne integrated array antenna meet the overall requirements of the ship after the radome is installed.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a design method for an integrated array antenna and a stealth radome on a ship, comprising the following steps: S1: obtaining the overall requirements of the ship for radar equipment, wherein the radar equipment includes an antenna and a radome;

[0006] S2: Decompose the specifications of the antenna and radome, and establish the parameter comparison relationship between the antenna and the radome;

[0007] S3: Construct an integrated local simulation model of the antenna and radome based on the ship's installation environment. Adjust the index parameters through the local simulation model to establish the mapping relationship between radome parameters and antenna performance changes.

[0008] S4: Obtain simulation models of the combat performance of electronic equipment, analyze the impact of antenna performance changes on the combat capability of the equipment based on the simulation models; obtain the equipment's tactical and technical performance requirements, and evaluate whether the performance of the antenna after adding an antenna radome meets the equipment's tactical and technical performance requirements.

[0009] S5: Determine the performance specifications of the antenna and radome.

[0010] According to the above scheme, in step S1, the antenna is an integrated array antenna, and the performance requirements of the integrated array antenna include radar cross section parameters, gain parameters, beamwidth parameters, sidelobe parameters, and beam scanning range parameters; the radome is a stealth radome, and the performance requirements of the stealth radome include frequency response characteristic parameters, insertion loss, and angle response characteristic parameters.

[0011] Furthermore, in step S2, the specific steps are as follows:

[0012] S21: Specifications for Decomposed Integrated Array Antennas

[0013] The gain G0 of the integrated array antenna is determined based on the combat distance requirements and the performance factors of the transmitter and receiver.

[0014] Based on the radar angular resolution requirements, the 3dB beamwidth BW0 of the integrated array antenna is determined.

[0015] Based on the radar array's detection coverage, determine the beam scanning horizontal and elevation angle range SR0 of the integrated antenna;

[0016] Based on the radar's anti-jamming and anti-interception performance requirements, the sidelobe level SLL0 of the integrated array antenna is determined;

[0017] Based on the performance requirements of the radar transmitter, determine the voltage standing wave ratio (V0) of the integrated array antenna;

[0018] Based on the overall allocation requirements of the ship, the radar cross-section R0 of the integrated array antenna is determined;

[0019] Based on the aforementioned performance requirements of the integrated array antenna, the target radiation pattern function of the integrated array antenna is derived. Where θ is the pitch angle, θ0 is the horizontal angle, and θ0 is the elevation angle of the main beam. Main beam horizontal angle;

[0020] S22: Based on the overall ship design requirements, determine the installation dimensions Dm0 of the stealth radome, including the horizontal length L of the radome. z Length W in the elevation plane of the radome z and array installation depth H;

[0021] Based on the in-band insertion loss Ls0, angular response characteristics Ar0, and out-of-band cutoff coefficient Rf0 of the stealth radome, the transfer function of the stealth radome is determined. S 0( f , θ , φ ).

[0022] Furthermore, in step S3, the specific steps are as follows:

[0023] S31: Determine the size of the local array of the integrated array antenna. The principle for selecting the local array is that the 3dB beamwidth of the local array does not exceed the position of the first sidelobe of the complete array. The calculation method is as follows:

[0024] Let the position of the first sidelobe of the complete array surface of the integrated array antenna in the horizontal plane be... Let k be the electromagnetic wave number and λ be the electromagnetic wave wavelength. Then, the length L of the local array required for the simulation in this direction is... f for:

[0025]

[0026] Let θ be the position of the first sidelobe of the complete array surface of the integrated antenna in the elevation plane. SLL1 , Let W be the wavenumber pointing angle, then the length W of the local front surface required for simulation in that direction. f for:

[0027]

[0028] If the size of the complete array exceeds the preset value, the 3dB beamwidth of the local array will be adjusted to the position of the second sidelobe of the complete array.

[0029] S32: Perform performance simulation of the local array surface of the integrated array antenna according to the actual layout of the integrated array antenna, and obtain the radiation pattern function of the local array surface.

[0030] S33: Based on the simulation of the local array surface of the integrated array antenna and the size ratio of the complete array surface, let L... a W is the length of the antenna in the horizontal plane. a Given the length in the antenna elevation plane, calculate the horizontal plane length L of the simulated local array surface of the radome. zj Length of pitch plane W zj They are respectively:

[0031] L zj =L z ·L f / L a ,

[0032] W zj =W z ·W f / W a ;

[0033] The spacing between the stealth radome and the array surface of the integrated array antenna, as well as the array surface mounting depth H, remain unchanged.

[0034] S34: Perform electromagnetic simulation on the local array surface and stealth radome of the integrated array antenna to obtain the antenna radiation pattern function when the local array surface of the integrated array antenna is equipped with a stealth radome. The in-band transmission coefficient S of the stealth radome during operation is calculated based on the formula. s :

[0035]

[0036] If S s If the deviation between S0(in) and S0(in) within the antenna's operating frequency band is less than 5%, then proceed to the next step of optimization design; if S s If the deviation between S0(in) and S0(in) within the antenna's operating frequency band is greater than 5%, the dimensions of the stealth radome and the array mounting depth of the integrated antenna are optimized and adjusted until S0(in) is achieved. s The deviation between (in) and S0(in) within the antenna operating frequency band is less than 5%;

[0037] S35: Perform electromagnetic simulation on the radar cross-section of the local array surface of the integrated array antenna and the stealth radome to obtain the radar cross-section R of the local array surface of the integrated array antenna when the stealth radome is installed. s ;

[0038] Replace the stealth radome with an all-metal structure and calculate the radar cross-section R. j ;

[0039] The radar cross-section R of the locally integrated array antenna after adding a stealth antenna is... a for:

[0040] R a =R s -R j ;

[0041] S36: Estimate the radar cross-section R of the integrated array antenna after installing a stealth radome based on the local array dimensions and the complete array dimensions of the integrated array antenna. g for:

[0042] R g =R a ×(L a ·W a / L f ·W f );

[0043] If R g If R < R0, then the out-of-band electromagnetic wave cutoff performance of the stealth radome is considered to meet the requirements;

[0044] If R g If R0 is greater than or equal to R0, then the out-of-band cutoff factor Rf0 of the stealth radome should be re-optimized.

[0045] S37: The above simulations determine the performance changes of the integrated array antenna after adding a stealth radome.

[0046] Furthermore, in step S4, the specific steps are as follows:

[0047] S41: Based on the in-band transmission coefficient S of the integrated array antenna with a stealth radome obtained in step S34, s Calculate the radiation pattern function of the complete array antenna surface with a stealth radome. for:

[0048]

[0049] S42: Based on the radiation pattern function F of the integrated array antenna with a stealth radome attached to the complete array surface. g Calculate the performance metrics of the integrated array antenna, including the antenna gain G. g 3dB beamwidth (BW) g Antenna beam scanning horizontal and vertical angle range SR g and antenna sidelobe level SLL g ;

[0050] S43: Calculate the impact of the actual performance indicators of the integrated array antenna on radar performance based on radar equations:

[0051] Let P t The transmitter power is represented by σ, the radar cross section of the detected target is represented by T0, the noise temperature is represented by B, and the noise bandwidth is represented by F. n Let L be the noise figure of the receiving system, F be the propagation factor, and L be the noise figure of the receiving system. s For system losses, SNR omin Given the minimum signal-to-noise ratio required for signal processing, the maximum detection range of the integrated array antenna with a stealth radome, derived from the radar equations, is:

[0052]

[0053] Based on the radar equations, the angular resolution τ of the integrated array antenna with a stealth radome is derived as follows:

[0054]

[0055] Furthermore, in step S5, the specific steps are as follows:

[0056] S51: Prototype testing and verification of the integrated array antenna and stealth radome, including the local array and radome.

[0057] S52: Analyze the performance of the antenna array and radome based on the test and verification results;

[0058] S53: Determine the performance requirements of the integrated array antenna and the stealth radome based on the analysis results.

[0059] An integrated design device for shipborne integrated array antenna and stealth radome, used in an integrated design method for shipborne integrated array antenna and stealth radome, includes an indicator requirement acquisition module, a comparison relationship establishment module, a mapping relationship construction module, a performance evaluation module, and a performance requirement determination module. The indicator requirement acquisition module is used to acquire the overall indicator requirements of the ship for radar equipment; the comparison relationship establishment module is used to establish the parameter comparison relationship between the antenna and the radome; the mapping relationship construction module is used to construct the mapping relationship between radome parameters and antenna performance changes; the performance evaluation module is used to evaluate whether the performance of the antenna after adding the radome meets the indicator requirements; and the performance requirement determination module is used to determine the performance indicators of the antenna and the radome.

[0060] An electronic device includes at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that are executed by the at least one processor to cause the at least one processor to perform an integrated design method for a shipborne integrated array antenna and a stealth radome.

[0061] Furthermore, electronic devices include mobile phones, laptops, digital broadcast receivers, personal digital assistants, tablets, portable multimedia players, mobile terminals of in-vehicle terminals, and fixed terminals of digital TVs and desktop computers.

[0062] The electronic device includes a processing unit that performs various appropriate actions and processes according to a program stored in a read-only memory or a program loaded from a storage device into a random access memory; the random access memory also stores various programs and data required for the operation of the electronic device; the processing unit, the read-only memory, and the random access memory are interconnected by a bus; input interfaces and output interfaces are also connected to the bus.

[0063] The following devices are connected to input and output interfaces: input devices including touch screens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, and gyroscopes; output devices including liquid crystal displays, speakers, and vibrators; storage devices including magnetic tapes and hard disks; and communication devices; communication devices are used to enable electronic devices to communicate wirelessly or wiredly with other devices to exchange data.

[0064] A non-transitory computer-readable storage medium storing a computer program executable by a computer processor, the computer program executing a method for integrating a shipborne integrated array antenna with a stealth radome.

[0065] The beneficial effects of this invention are as follows:

[0066] 1. The present invention provides an integrated design method for shipborne integrated array antenna and stealth radome. It rationally allocates the performance indicators of integrated antenna and stealth radome according to the usage requirements of shipborne equipment, selects a local array of appropriate size and radome for iterative optimization of electromagnetic performance, and determines the final technical requirements of integrated array antenna and stealth radome through a reasonable indicator evaluation system. This ensures that the various functional performance indicators of shipborne integrated array antenna meet the overall requirements of the ship after the radome is installed.

[0067] 2. This invention reduces the number of radome design iterations by helping radome designers determine radome performance parameters.

[0068] 3. This invention enables accurate evaluation of the overall performance of antennas and antenna arrays in a shipboard environment, thereby improving the accuracy of antenna performance evaluation in a shipboard environment. Attached Figure Description

[0069] Figure 1 This is a flowchart of a method according to an embodiment of the present invention.

[0070] Figure 2 This is a schematic diagram of the apparatus according to an embodiment of the present invention.

[0071] Figure 3 This is a schematic diagram of an electronic device according to an embodiment of the present invention.

[0072] Figure 4 This is a schematic diagram of the storage medium according to an embodiment of the present invention.

[0073] Figure 5 This is a diagram showing the technical specifications and their inter-parameter mapping relationships of embodiments of the present invention.

[0074] Figure 6 This is a flowchart illustrating the calculation of the radome transmission coefficient under actual installation conditions according to an embodiment of the present invention.

[0075] Figure 7 This is a schematic diagram illustrating the impact of the actual array antenna pattern on the combat performance of radar equipment according to an embodiment of the present invention. Detailed Implementation

[0076] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0077] Example 1

[0078] See Figure 1 This invention employs an integrated design method for shipborne integrated array antennas and stealth radomes, comprising the following steps:

[0079] S1: Obtain the overall requirements of the ship for radar equipment, including the technical specifications of integrated array antennas and stealth radomes; the technical specifications of integrated array antennas include radar cross-section parameters, gain parameters, beamwidth parameters, sidelobe parameters, and beam scanning range parameters; the technical specifications of stealth radomes include frequency response characteristics parameters, insertion loss, and angle response characteristics parameters.

[0080] S2: Establish the correlation between antenna parameters and radome parameters;

[0081] The performance specifications of the integrated array antenna are broken down according to the requirements of the ship's combat system for detection radar equipment. Based on operational range requirements and transmitter / receiver performance, the integrated array antenna gain G0 is determined; the 3dB beamwidth BW0 is determined based on radar angular resolution requirements; the horizontal and vertical beam scanning angle range SR0 is determined based on the radar array's detection coverage; the sidelobe level SLL0 is determined based on radar anti-jamming and anti-interception performance requirements; and the voltage standing wave ratio V0 is determined based on radar transmitter performance requirements. Furthermore, the radar cross-section R0 of the integrated array antenna is determined based on the ship's overall allocation specifications.

[0082] Based on the aforementioned performance indicators of the integrated array antenna, the target radiation pattern function of the integrated array antenna is derived. Where θ is the pitch angle, θ0 is the horizontal angle, and θ0 is the elevation angle of the main beam. The horizontal angle of the main beam.

[0083] Based on the overall ship design requirements, the installation dimensions Dm0 of the stealth radome are determined, including the horizontal length L of the radome. z Length W in the elevation plane of the radome z And array installation depth H.

[0084] Based on the in-band insertion loss Ls0, angular response characteristics Ar0, and out-of-band cutoff coefficient Rf0 of the stealth radome, determine the transfer function of the stealth radome. S 0( f , θ , φ ).

[0085] S3: Select a local antenna array and stealth radome. Based on the ship's installation environment, construct an integrated local simulation model of the antenna and radome. Adjust key performance parameters of the radar stealth radome using this local simulation model, observe changes in antenna array performance, and establish a mapping relationship between radome performance parameters and antenna performance changes based on these changes. Specific steps are as follows:

[0086] S31: Determine the size of the local array of the integrated array antenna. The selection principle is that the 3dB beamwidth of the local array does not exceed the position of the first sidelobe of the complete array. The calculation method is as follows: Let the position of the first sidelobe of the complete antenna array in the horizontal plane be... Let k be the electromagnetic wave number and λ be the electromagnetic wave wavelength. Then, the length L of the local array required for the simulation in this direction is... f for:

[0087]

[0088] Similarly, the position of the first sidelobe of the complete antenna array in the elevation plane is θ. SLL1 , Let W be the wavenumber pointing angle, then the length W of the local front surface required for simulation in that direction. f for:

[0089]

[0090] If the full array size is too large, the 3dB beamwidth of the local array can be adjusted to the position of the second sidelobe of the full array.

[0091] S32: Perform local antenna array performance simulation according to the actual antenna array layout to obtain the local array radiation pattern function.

[0092] S33: Based on the proportional relationship between the size of the local simulated array and the complete antenna array, let L... a W is the length of the antenna in the horizontal plane. a Given the length in the antenna elevation plane, calculate the horizontal plane length L of the simulated local array surface of the radome. zj Length of pitch plane W zj They are respectively:

[0093] L zj =L z ·L f / L a ,

[0094] W zj =W z ·W f / W a ;

[0095] The distance between the radome and the antenna array, as well as the array mounting depth H, remain unchanged.

[0096] S34: Perform electromagnetic simulation on the local antenna array and stealth radome to obtain the antenna pattern function when the radar stealth radome is installed on the local array. The in-band transmission coefficient S of the stealth radome during operation is calculated using the following formula. s :

[0097]

[0098] If S s If the deviation between S0(in) and S0(in) within the antenna's operating frequency band is less than 5%, then proceed to the next step of optimization design; if S s If the deviation between S0(in) and S0(in) is greater than 5% within the antenna's operating frequency band, the size of the stealth radome and the array installation depth are optimized and adjusted until S0(in) is achieved. s The deviation between (in) and S0(in) within the antenna operating frequency band is less than 5%;

[0099] S35: Electromagnetic simulation of the radar cross-section of a local antenna array and a stealth radome is performed to obtain the radar cross-section R when a radar stealth radome is installed on the local array. s Replace the radar stealth radome with an all-metal structure and calculate the radar cross-section R. j According to the formula:

[0100] R a =R s -R j ,

[0101] The radar cross section R of the local antenna array with radar stealth antenna is obtained. a ;

[0102] S36: Estimate the radar cross-section R of the integrated array antenna after installing a stealth radome based on the local array size and the complete array size. g for:

[0103] R g =R a ×(L a ·w A / L f ·W f );

[0104] If R g If R < R0, then the stealth antenna radome's out-of-band electromagnetic wave cutoff performance is considered to meet the requirements; if R g If R0 is greater than or equal to 0, then the out-of-band cutoff factor Rf0 of the stealth antenna radome should be re-optimized.

[0105] S37: Through the above simulation, the performance changes of the integrated array antenna after adding a stealth radome were determined.

[0106] S4: Obtain the simulation model of the electronic equipment's combat performance, and analyze the impact of antenna performance changes on the equipment's combat capabilities based on the simulation model; obtain the equipment's tactical and technical performance requirements, and evaluate whether the performance of the integrated array antenna after adding a stealth radome meets the equipment's tactical and technical performance requirements; the specific steps are as follows:

[0107] S41: Based on the in-band transmission coefficient S obtained in the preceding steps for adding a stealth radome to the array antenna. s Calculate the radiation pattern function of the complete antenna array with a stealth radome. for:

[0108]

[0109] S42: The pattern function F of the stealth radome is loaded based on the complete antenna array. g Calculate the main performance indicators of the antenna, including antenna gain G. g 3dB beamwidth (BW) g Antenna beam scanning horizontal and vertical angle range SR g and antenna sidelobe level SLL g wait.

[0110] S43: Calculate the impact of actual antenna array performance on radar combat performance based on radar equations. The specific steps are as follows:

[0111] Let P t The transmitter power is represented by σ, the radar cross section of the detected target is represented by T0, the noise temperature is represented by B, and the noise bandwidth is represented by F. n Let L be the noise figure of the receiving system, F be the propagation factor, and L be the noise figure of the receiving system. s For system losses, SNR omin Given the minimum signal-to-noise ratio required for signal processing, the maximum detection range after loading the stealth radome onto the antenna is calculated based on the radar equations as follows:

[0112]

[0113] Based on the radar equations, the calculated angular resolution τ after the antenna is loaded with a stealth radome is:

[0114]

[0115] S5: Determine the performance requirements for the integrated array antenna and stealth radome.

[0116] S51: Conduct partial antenna array and radome prototype testing and verification of integrated array antenna and stealth radome;

[0117] S52: Analyze the performance of the antenna array and radome based on the test and verification results;

[0118] S53: Determine the performance requirements of the integrated array antenna and stealth radome based on the analysis results.

[0119] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0120] The performance of the antenna array and radome was verified through prototype testing of the partial antenna array and radome, ultimately determining the performance requirements of the integrated array antenna and stealth radome. A prototype was fabricated based on the simulation model of the partial array and stealth radome. In a microwave anechoic chamber, the antenna gain, 3dB beamwidth, horizontal and vertical beam scanning angles, and sidelobe levels were tested after adding the stealth radome, and the results were compared with simulation results to verify whether the measured antenna performance met the design requirements. The radar cross section (RCS) of the antenna after adding the stealth radome was also tested in a microwave anechoic chamber, and the results were compared with simulation results to verify whether the measured RCS met the design requirements. Based on the test results, the final design specifications of the integrated array antenna and stealth radome were determined.

[0121] Example 2

[0122] This embodiment provides an integrated design device for shipborne integrated array antenna and stealth radome, which is used in the method of embodiment 1. It includes an index requirement acquisition module, a comparison relationship establishment module, a mapping relationship construction module, a performance evaluation module, and a performance requirement determination module.

[0123] The indicator requirement acquisition module is used to acquire the overall indicator requirements of the ship for radar equipment;

[0124] The correlation establishment module is used to establish the correlation between the influence of antenna parameters and radome parameters.

[0125] The mapping relationship construction module is used to construct the mapping relationship between radome performance parameters and antenna performance changes;

[0126] The performance evaluation module is used to evaluate the performance of the integrated array antenna after adding a stealth radome;

[0127] The performance requirements determination module is used to determine the performance requirements of the integrated array antenna and the stealth radome.

[0128] See Figure 3 This document illustrates a structural schematic diagram of an electronic device 100 suitable for implementing this embodiment. The electronic device in this embodiment includes, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 3 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of this embodiment.

[0129] like Figure 3 As shown, the electronic device 100 includes a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 101, which performs various appropriate actions and processes according to a program stored in a read-only memory (ROM) 102 or a program loaded from a storage device 108 into a random access memory (RAM) 103. The RAM 103 also stores various programs and data required for the operation of the electronic device 100. The processing unit 101, ROM 102, and RAM 103 are interconnected via a bus 104. An input / output (I / O) interface 105 is also connected to the bus 104.

[0130] Typically, the following devices are connected to I / O interface 105: input devices 106 including touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, and gyroscope; output devices 107 including liquid crystal display (LCD), speaker, and vibrator; storage devices 108 including magnetic tape and hard disk; and communication devices 109. Communication device 109 enables electronic device 100 to communicate wirelessly or wiredly with other devices to exchange data. Although electronic device 100 with various devices is shown in the figure, it should be understood that it is not required to implement or possess all the devices shown, and more or fewer devices may be implemented alternatively.

[0131] Specifically, the process described in the flowchart of Embodiment 1 is implemented as a computer software program. For example, this embodiment includes a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowchart. In such an embodiment, the computer program is downloaded and installed from a network via communication device 109, or installed from storage device 108, or installed from ROM 102. When the computer program is executed by processing device 101, it performs the functions defined in the methods of this disclosure embodiment.

[0132] See Figure 4 It illustrates a structural schematic of a computer-readable storage medium suitable for implementing this embodiment, the computer-readable storage medium storing a computer program that, when executed by a processor, enables the implementation of the integrated design method of shipborne integrated array antenna and stealth radome as described above.

[0133] This embodiment provides a method, device, and storage medium for the integrated design of a shipborne integrated array antenna and a stealth radome. It rationally allocates the performance indicators of the integrated antenna and the stealth radome according to the requirements of shipborne equipment, selects a suitable-sized local array and radome for iterative optimization of electromagnetic performance, and determines the final technical requirements of the integrated array antenna and the stealth radome through a reasonable indicator evaluation system. This ensures that the various functional performance indicators of the shipborne integrated array antenna meet the overall requirements of the ship after the radome is installed.

[0134] The above embodiments are only used to illustrate the design concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications made based on the principles and design ideas disclosed in the present invention are within the protection scope of the present invention.

Claims

1. A method for integrating a shipborne integrated array antenna with a stealth radome, characterized in that: Includes the following steps: S1: Obtain the overall requirements of the ship for radar equipment, which includes antennas and radomes; S2: Decompose the specifications of the antenna and radome, and establish the parameter comparison relationship between the antenna and the radome; S3: Construct an integrated local simulation model of the antenna and radome based on the ship's installation environment. Adjust the index parameters through the local simulation model to establish the mapping relationship between radome parameters and antenna performance changes. The specific steps are as follows: S31: Determine the size of the local array of the integrated array antenna. The principle for selecting the local array is that the 3dB beamwidth of the local array does not exceed the position of the first sidelobe of the complete array. The calculation method is as follows: Let the position of the first sidelobe of the complete array surface of the integrated array antenna in the horizontal plane be... φ SLL1 , k For electromagnetic wave number, λ If the wavelength is λ, then the length of the local array required for the simulation in that direction is λ. L f for: ； Let the position of the first sidelobe of the complete array surface of the integrated antenna in the elevation plane be... θ SLL1 , ψ Let be the wavenumber pointing angle, then the length of the local front surface required for simulation in that direction. W f for: W f = kλ / 2 ψθ SLL1 ； If the size of the complete array exceeds the preset value, the 3dB beamwidth of the local array will be adjusted to the position of the second sidelobe of the complete array. S32: Perform performance simulation of the local array surface of the integrated array antenna according to the actual layout of the integrated array antenna, and obtain the radiation pattern function of the local array surface. f j ( θ 0, φ 0, θ , φ ); S33: Based on the simulation of the local array surface of the integrated array antenna and the size ratio of the complete array surface, let... L z The length of the radome in the horizontal plane. W z The length of the radome in the elevation plane. L a The length of the antenna in the horizontal plane. W a Given the length in the antenna elevation plane, calculate the horizontal plane length of the simulated local array surface of the radome. L zj Length of pitch plane W zj They are respectively: L zj = L z ·L f / L a ， W zj = W z ·W f / W a ； The spacing between the stealth radome and the array surface of the integrated array antenna, as well as the array surface mounting depth H, remain unchanged. S34: Perform electromagnetic simulation on the local array surface and stealth radome of the integrated array antenna to obtain the antenna radiation pattern function when the local array surface of the integrated array antenna is equipped with a stealth radome. f s ( θ 0, φ 0, θ , φ ),in θ For pitch angle, φ For horizontal angle, θ 0 is the main beam elevation angle, φ 0 is the main beam horizontal angle; the in-band transmission coefficient of the stealth radome during operation is calculated according to the following formula. S s : ， like S s Transfer function with stealth radome S If the deviation within the antenna's operating frequency band is less than 5%, then proceed to the next step of optimization design; if... S s and S If the deviation within the antenna's operating frequency band exceeds 5%, the dimensions of the stealth radome and the array surface installation depth of the integrated antenna will be optimized and adjusted until the desired result is achieved. S s and S The deviation within the antenna's operating frequency band is less than 5%; S35: Electromagnetic simulation is performed on the radar cross-section of the local array surface of the integrated array antenna and the stealth radome to obtain the radar cross-section of the local array surface of the integrated array antenna when the stealth radome is installed. R s ; Replace the stealth radome with an all-metal structure and calculate the radar cross-section at this point. R j ; The radar cross section of the locally integrated array antenna after adding a stealth antenna. R a for: ； S36: Estimate the radar cross-section of the integrated array antenna after installing a stealth radome based on the local and complete array dimensions of the integrated array antenna. R g for: ； like R g Radar cross section of integrated array antenna R If the value is 0, then the out-of-band electromagnetic wave cutoff performance of the stealth radome is considered to meet the requirements. like R g ≥ Radar cross section of integrated array antenna R If the value is 0, then the out-of-band cutoff factor Rf0 of the stealth radome should be re-optimized. S37: The above simulations determine the performance changes of the integrated array antenna after adding a stealth radome. S4: Obtain simulation models of the combat performance of electronic equipment, and analyze the impact of antenna performance changes on the combat capabilities of the equipment based on the simulation models; Obtain the equipment's tactical and technical specifications and assess whether the performance of the antenna after adding a radome meets the equipment's tactical and technical specifications. S5: Determine the performance specifications of the antenna and radome.

2. The integrated design method for shipborne integrated array antenna and stealth radome according to claim 1, characterized in that: In step S1, the antenna is an integrated array antenna, and the performance requirements of the integrated array antenna include radar cross section parameters, gain parameters, beamwidth parameters, sidelobe parameters, and beam scanning range parameters; the radome is a stealth radome, and the performance requirements of the stealth radome include frequency response characteristics parameters, insertion loss, and angle response characteristics parameters.

3. The integrated design method of shipborne integrated array antenna and stealth radome according to claim 2, characterized in that: The specific steps in step S2 are as follows: S21: Specifications for Decomposed Integrated Array Antennas The gain G0 of the integrated array antenna is determined based on the combat distance requirements and the performance factors of the transmitter and receiver. Based on the radar angular resolution requirements, the 3dB beamwidth BW0 of the integrated array antenna is determined. Based on the radar array's detection coverage, determine the beam scanning horizontal angle and elevation angle range SR0 of the integrated antenna; Based on the radar's anti-jamming and anti-interception performance requirements, the sidelobe level SLL0 of the integrated array antenna is determined; Based on the performance requirements of the radar transmitter, determine the voltage standing wave ratio (V0) of the integrated array antenna; Based on the overall allocation requirements of the ship, the radar cross-section R0 of the integrated array antenna is determined; Based on the aforementioned performance requirements of the integrated array antenna, the target radiation pattern function of the integrated array antenna is derived. F 0( θ 0, φ 0, θ , φ ); S22: Based on the overall ship design requirements, determine the installation dimensions Dm0 of the stealth radome, including the horizontal length of the radome. L z Length of the radome in the elevation plane W z and array installation depth H; Based on the in-band insertion loss Ls0, angular response characteristics Ar0, and out-of-band cutoff coefficient Rf0 of the stealth radome, the transfer function of the stealth radome is determined. S 0( f , θ , φ ).

4. The integrated design method of shipborne integrated array antenna and stealth radome according to claim 3, characterized in that: The specific steps in step S4 are as follows: S41: Based on the in-band transmission coefficient of the integrated array antenna with a stealth radome obtained in step S34... S s Calculate the radiation pattern function of the complete array antenna surface with a stealth radome. F g ( θ 0, φ 0, θ , φ )for: ； S42: Radiation pattern function based on the complete array surface of the integrated antenna with a stealth radome. F g Calculate the performance metrics of an integrated array antenna, including antenna gain. G g 3dB beamwidth BW g Antenna beam scanning horizontal and vertical angle range SR g and antenna sidelobe level SLL g ; S43: Calculate the impact of the actual performance indicators of the integrated array antenna on radar performance based on radar equations: set up P t Indicates transmitter power. σ To detect the radar cross-section of a target, T 0 represents the noise temperature. B For noise bandwidth, F n The noise figure of the receiving system, F As a propagation factor, L s For system losses, SNR omin Given the minimum signal-to-noise ratio required for signal processing, the maximum detection range of the integrated array antenna with a stealth radome, derived from the radar equations, is: ； The angular resolution of the integrated array antenna after loading a stealth radome was calculated based on the radar equations. τ for: 。 5. The integrated design method of shipborne integrated array antenna and stealth radome according to claim 4, characterized in that: The specific steps in step S5 are as follows: S51: Prototype testing and verification of the integrated array antenna and stealth radome, including the local array and radome. S52: Analyze the performance of the antenna array and radome based on the test and verification results; S53: Determine the performance requirements of the integrated array antenna and the stealth radome based on the analysis results.

6. A design device integrating a shipborne integrated array antenna and a stealth radome, characterized in that: The method for implementing the integrated design of shipborne integrated array antenna and stealth radome as described in any one of claims 1 to 5 includes an index requirement acquisition module, a comparison relationship establishment module, a mapping relationship construction module, a performance evaluation module, and a performance requirement determination module. The indicator requirement acquisition module is used to acquire the overall indicator requirements of the ship for radar equipment; the comparison relationship establishment module is used to establish the parameter comparison relationship between the antenna and the radome. The mapping relationship construction module is used to construct the mapping relationship between radome parameters and antenna performance changes; the performance evaluation module is used to evaluate whether the performance of the antenna after adding a radome meets the target requirements. The performance requirement determination module is used to determine the performance specifications of the antenna and radome.

7. An electronic device, characterized in that: It includes at least one processor and a memory communicatively connected to at least one of the processors; wherein the memory stores instructions that are executed by at least one of the processors to cause at least one of the processors to perform an integrated design method for a shipborne integrated array antenna and a stealth radome as described in any one of claims 1 to 5.

8. An electronic device according to claim 7, characterized in that: Electronic devices include mobile phones, laptops, digital broadcast receivers, personal digital assistants, tablets, portable multimedia players, mobile terminals of vehicle-mounted terminals, and fixed terminals of digital TVs and desktop computers. The electronic device includes a processing unit that performs various appropriate actions and processes according to a program stored in a read-only memory or a program loaded from a storage device into a random access memory; the random access memory also stores various programs and data required for the operation of the electronic device; the processing unit, the read-only memory, and the random access memory are interconnected by a bus; input interfaces and output interfaces are also connected to the bus. The following devices are connected to the input and output interfaces: input devices including touch screens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, and gyroscopes; output devices including liquid crystal displays, speakers, and vibrators; and storage devices including magnetic tapes and hard disks. and communication devices; Communication devices are used to enable electronic devices to communicate wirelessly or wiredly with other devices to exchange data.

9. A non-transitory computer-readable storage medium, characterized in that: It contains a computer program that can be executed by a computer processor, which executes a method for integrating a shipborne integrated array antenna and a stealth radome as described in any one of claims 1 to 5.

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