Digital modeling method of radar transmitter

Abstract

The invention particularly relates to a digital modeling method of a radar transmitter. The method comprises the following steps: acquiring the output power of a power supply based on power supply parameters in the radar transmitter; acquiring transmission time, waveform bandwidth, pulse bandwidth, pulse interval, pulse repetition period pulse number and modulation frequency and phase of the modulator based on the modulator parameters; acquiring the oscillation frequency of the oscillator based on the radio frequency oscillator parameter; gains are obtained based on the power amplifier parameters; acquiring waveform power based on the output power and the gain of the power supply; selecting a modulation frequency or an oscillation frequency as a working frequency; calculating an azimuth arrival angle and a pitching arrival angle of a radar beam reaching the detection object and the clutter object based on the radar position and the detection object position; the power, the transmitting time, the pulse bandwidth, the pulse width, the pulse interval, the pulse repetition period, the working frequency, the azimuth arrival angle and the pitching arrival angle are used as transmitting waveform parameters of the radar transmitter. According to the method, simulation modeling of the radar transmitter can be realized, and the radar performance can be verified more efficiently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radar digital modeling and simulation, and particularly relates to a digital modeling method of a radar transmitter. BACKGROUND

[0002] As a core technology, the digital means is a key element for constructing a physical information system, and plays an important role in bridging the product and design concept. Therefore, using the digital modeling means to test and optimize, verify and evaluate the design of the product and even the function and performance will greatly improve the product applicability and shorten the development cycle.

[0003] The radar digital modeling and simulation uses a mathematical modeling method to construct a radar, a target, clutter, electronic interference and an electromagnetic environment model, and then uses a mathematical simulation method to simulate the interaction of the radar, the target, the clutter, the electronic interference and the electromagnetic environment under the set workflow and environment, simulate the whole process of radar waveform parameter and signal generation, transmission, echo and processing, test and optimize the design elements of the radar, verify and evaluate the function and performance of the radar, effectively improve the applicability of the function of the product in the whole life cycle, and has become the focus of current radar technology development and competition.

[0004] The radar model is an indispensable part of the radar digital modeling and simulation, and the quality of the radar model directly affects the evaluation effect and level. The radar is mainly composed of an antenna, a transmitter, a receiver, a signal processing function module, etc. Among them, the radar transmitter generates radar transmission signal timing and waveform, which is the basis for signal transmission through the antenna and signal reception and processing. Therefore, the digital modeling of the radar transmitter according to the function of the radar transmitter is the first problem to be solved in the radar digital modeling and simulation.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The present application provides a digital modeling method of a radar transmitter, which is used to solve the problem of mathematical modeling of the radar transmitter in the radar digital modeling and simulation technology.

[0007] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0008] According to a first aspect of the present application, a digital modeling method of a radar transmitter is provided, the method comprising:

[0009] obtaining the output power of the power supply based on the power supply parameters in the radar transmitter;

[0010] acquire the transmit time, the waveform bandwidth, the pulse bandwidth, the pulse interval, the pulse repetition period, the modulation frequency and the phase of the modulator based on the modulator parameters;

[0011] acquire the oscillation frequency of the oscillator based on the radio frequency oscillator parameters;

[0012] acquire the gain based on the power amplifier parameters;

[0013] acquire the waveform power based on the output power of the power supply and the gain;

[0014] select the modulation frequency or the oscillation frequency as the operating frequency;

[0015] calculate the azimuth and elevation angles of arrival of the radar beam to the detection target and the clutter object based on the radar position and the detection target position;

[0016] In the simulation time period, the digital model of the radar transmitter acquires the waveform power, the transmit time, the pulse bandwidth, the pulse width, the pulse interval, the pulse repetition period, the operating frequency, the phase based on the functional parameters of the power supply, the modulator and the radio frequency oscillator or the power amplifier at the simulation time, and calculates the azimuth and elevation angles of arrival based on the radar and target positions at the simulation time;

[0017] use the waveform power, the transmit time, the pulse bandwidth, the pulse width, the pulse interval, the pulse repetition period, the operating frequency, the phase, the azimuth and elevation angles of arrival as the transmission waveform parameters of the radar transmitter.

[0018] In some example embodiments, the calculation of the azimuth and elevation angles of arrival of the radar beam to the detection target and the clutter object based on the radar position and the detection target position is specifically:

[0019] Let the position coordinates of the radar be (X r ,Y r ,Z r ), and the coordinates of the target be (X t ,Y t ,Z t ), then the azimuth and elevation angles of arrival θ t and ψ t of the radar beam to the target through the direct wave are:

[0020]

[0021] The azimuth and elevation angles of arrival θ M and ψ M of the radar beam to the target through the reflected wave can be solved by the earth spherical model as:

[0022] θ M = θ t

[0023]

[0024] wherein r e denotes the earth radius, R1 denotes the distance of the radar to the reflection point, and

[0025]

[0026] wherein a is the spherical central angle corresponding to the mapping circular arc of R1 in the earth spherical model, and a is

[0027]

[0028] wherein R G denotes the length of the mapping circular arc of the radar to the target distance R in the earth spherical model, and then

[0029]

[0030] and R is

[0031]

[0032] The azimuth and elevation angles of arrival of the radar beam to the clutter object are c and c are

[0033]

[0034] wherein r is the initial azimuth angle of the radar beam, v r , v rel and v res respectively denote the radar speed, the line-of-sight speed of the target relative to the radar, and the radar measurement speed resolution, and then

[0035]

[0036]

[0037] wherein R c denotes the distance of the radar to the clutter, and when the clutter is the main lobe clutter,

[0038]

[0039] When the clutter is the side lobe clutter, the nearest non-ambiguous distance clutter is considered, and then

[0040]

[0041] The azimuth angle of arrival of the radar beam to the detection object is calculated to be t , andM ,θ c} and the pitch angle of arrival Ψ = {ψ t ,ψ M ,ψ c}.

[0042] According to a second aspect of the present application, a digital modeling system of a radar transmitter is provided, comprising:

[0043] a power supply parameter acquisition module configured to acquire an output power of a power supply based on power supply parameters in the radar transmitter;

[0044] a modulator parameter acquisition module configured to acquire a transmission time, a waveform bandwidth, a pulse bandwidth, a pulse interval, a number of pulse repetition periods, a modulation frequency and a phase of a modulator based on modulator parameters;

[0045] a radio frequency oscillator parameter acquisition module configured to acquire an oscillation frequency of an oscillator based on radio frequency oscillator parameters;

[0046] a power amplifier parameter acquisition module configured to acquire a gain based on power amplifier parameters;

[0047] a waveform power calculation module configured to acquire a waveform power based on the output power of the power supply and the gain;

[0048] a working frequency selection module configured to select the modulation frequency or the oscillation frequency as a working frequency;

[0049] an angle of arrival calculation module configured to calculate azimuth angles of arrival and pitch angles of arrival of radar beams of the radar transmitter to a detection object and a clutter object based on positions of the radar transmitter and the detection object;

[0050] a transmitted waveform simulation model configured to simulate a transmitted waveform based on the acquired parameters.

[0051] According to a third aspect of the present application, a storage medium having stored thereon a computer program is provided, the computer program being executed by a processor to implement the digital modeling method of the radar transmitter according to the first aspect.

[0052] According to a fourth aspect of the present application, a computer program product having stored thereon a computer program is provided, the computer program being executed by a processor to implement the digital modeling method of the radar transmitter according to the first aspect.

[0053] According to a fifth aspect of the present application, an electronic device is provided, comprising:

[0054] a processor; and

[0055] a memory configured to store executable instructions of the processor;

[0056] The processor is configured to implement the digital modeling method of the radar transmitter according to the first aspect above by executing the executable instructions.

[0057] The digital modeling method of the radar transmitter provided by the embodiment of the present application has the following beneficial effects compared with the prior art:

[0058] 1) The digital model of the radar transmitter fully considers the hardware function composition and parameter configuration of the radar transmitter, is simple to implement, and has good practicability and fidelity.

[0059] 2) The digital model of the radar transmitter designs the azimuth and elevation angles of arrival of the radar beam pointing to the target and clutter, and has comprehensive functions and strong practicability.

[0060] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0061] The drawings incorporated into the specification and forming a part thereof show, to illustrate the embodiments in accordance with the present application and, together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0062] Figure 1 is a flow block diagram of the digital modeling method of the radar transmitter according to the embodiment of the present application.

[0063] Figure 2 The composition of an electronic device in an exemplary embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0064] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art. The described features, structures, or characteristics can be combined in one or more implementations.

[0065] Furthermore, the accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings:

[0066] In order to solve the problem of mathematical modeling of a radar transmitter in radar digital modeling and simulation technology, a method of mathematical modeling of a radar transmitter based on functions of the radar transmitter is proposed for construction of a radar model in radar digital modeling and simulation. The method describes radar waveform transmission parameters according to function components of the radar transmitter, and gives a specific design method of the transmission parameters. The method is suitable for digital modeling of the radar transmitter in radar digital modeling and simulation.

[0067] A method of digital modeling of a radar transmitter is provided in the example embodiment, a mathematical model of the radar transmitter is realized by analyzing functions of the radar transmitter, and description and calculation of radar transmission waveform parameters are completed. Functions of the radar transmitter mainly include a power supply, a modulator, and a radio frequency oscillator or a power amplifier. The power supply mainly provides an energy source with a certain power to meet use requirements of the radar. The modulator generates a waveform with a certain time domain or frequency domain modulation according to a direct current energy source provided by the power supply. The radio frequency oscillator or the power amplifier performs frequency domain modulation or amplification on the time domain or frequency domain modulated waveform generated by the modulator to generate a transmission signal of the transmitter. The output power of the power supply of the transmitter can be represented by P s When the waveform generated by the modulator is a rectangular pulse, the waveform is represented by a waveform generation time T, a bandwidth B, a pulse width τ, a pulse interval PRI, and a pulse repetition period CPI. When the pulse period is a modulated signal, a modulation frequency f and a waveform phase are added to describe the modulated signal. The rectangular pulse signal or the modulated signal generated by the modulator is processed by the radio frequency oscillator or the power amplifier to generate a transmission waveform of the transmitter. When the radio frequency oscillator or the power amplifier receives the rectangular pulse signal, the radio frequency oscillator modulates the rectangular pulse signal into a frequency f and a phase output, when receiving the modulation signal, amplifying the modulation signal by the power amplifier with the gain G and outputting, on the other hand, the power and phase of the radar transmit waveform are also related to the azimuth angle of arrival Θ and the elevation angle of arrival Ψ of the radar beam, the azimuth angle of arrival Θ and the elevation angle of arrival Ψ are obtained by calculating the position of the radar and the detected object, the mathematical model of the radar transmitter is to determine the mathematical description of the radar transmitter transmit waveform according to the parameters of the power supply, the modulator and the radio frequency oscillator or the power amplifier of the transmitter, and the position of the radar and the detected object, therefore, the mathematical model of the radar transmitter is to generate the transmit waveform power P=Ps×G, the transmit time T, the bandwidth B, the pulse width τ, the pulse interval PRI, the pulse repetition period CPI, the operating frequency f, and the phase of the waveform Figure 1 .

[0068] Referring to Figure 1 , specifically, the method can include the following steps:

[0069] In step S101, according to the hardware configuration of the power supply, the modulator and the radio frequency oscillator or the power amplifier in the radar transmitter, the corresponding functional parameters of the mathematical model of the radar transmitter are determined, specifically including the output power Ps of the power supply, the waveform generation time T of the modulator, the waveform bandwidth B, the pulse width τ, the pulse interval PRI, the pulse repetition period pulse number CPI, the modulation frequency f and the phase of the modulation signal, and the oscillation frequency f of the radio frequency oscillator and the gain G of the power amplifier. The functions of the power supply, the modulator and the radio frequency oscillator or the power amplifier are designed according to the requirements of the radar, and the functional parameters thereof are known parameters for the digital model of the radar transmitter, therefore, the transmit waveform power P, the transmit time T, the waveform bandwidth B, the pulse width τ, the pulse interval PRI, the pulse repetition period pulse number CPI, the operating frequency f and the phase of the radar transmitter digital model can be obtained from the hardware configuration of the radar transmitter, wherein P=Ps×G, and the operating frequency f is the modulation frequency of the modulator or the oscillation frequency of the radio frequency oscillator.

[0070] In step S102, the azimuth angle of arrival Θ and the elevation angle of arrival Ψ of the radar beam of the radar transmitter mathematical model to the detected object are calculated. Generally, the detected objects of the radar include target objects of interest and clutter objects of no interest, the radar beam can reach the target objects through direct waves and reflected waves, the azimuth and elevation angles of arrival of the radar beam reaching the target objects through direct waves are θ t and ψ t , the azimuth and elevation angles of arrival of the radar beam reaching the target objects through reflected waves are θ M and ψ M , and the azimuth and elevation angles of arrival of the radar beam reaching the clutter objects are θ c and ψc Let the radar's position coordinates be (X... r ,Y r Z r The target's coordinates are (X... t ,Y t Z t ), then θ t and ψ t for

[0071]

[0072] θ M and ψ M The solution can be obtained using the Earth spherical model.

[0073] θ M =θ t (3)

[0074]

[0075] Where, r e R represents the Earth's radius, and R1 represents the distance from the radar to the reflection point.

[0076]

[0077] Where α is the central angle of the circle corresponding to the arc mapped by R1 in the Earth spherical model, and α is

[0078]

[0079] Among them, R G Let R represent the length of the arc mapped to the distance R from the radar to the target in the Earth's spherical model.

[0080]

[0081] Where R is

[0082]

[0083] θ c and ψ c for

[0084]

[0085] Where, θ r Initial azimuth angle of radar beam, v r ,v rel and v res Let represent the radar's moving speed, the target's line-of-sight speed relative to the radar, and the radar's measured speed resolution, respectively.

[0086]

[0087] Where c represents the speed of light, R c This indicates the distance from the radar to the clutter, when the clutter is a main lobe clutter.

[0088]

[0089] When the clutter is sidelobe clutter, consider the clutter at the closest unambiguous distance to the target.

[0090]

[0091] Substituting equations (14) and (15) into equation (13), we can obtain the elevation arrival angle of the radar beam reaching the clutter as ψ. c Substituting equations (10), (11), (12), and (13) along with the radar and target coordinates into equation (9), we can obtain the azimuth angle θ of the radar beam arriving at the clutter. c .

[0092] In summary, the azimuth angle of arrival Θ = {θ} of the radar beam reaching the target can be calculated. t ,θ M ,θ c} and pitch angle Ψ={ψ t ,ψ M ,ψ c}

[0093] Step S103: During the simulation period, the digital model of the radar transmitter generates parameters for the radar transmitter's transmitted waveform at subsequent simulation times, including power P, transmission time T, bandwidth B, pulse width τ, pulse interval PRI, pulse repetition period CPI, operating frequency f, and phase. The azimuth angle Θ and elevation angle Ψ are obtained from the functional parameters of the power supply, modulator and RF oscillator or power amplifier at the simulation time. They are calculated from the radar and target positions at the simulation time by equations (1), (2), (3), (4), (9) and (13).

[0094] It should be noted that the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may, for example, be executed synchronously or asynchronously in multiple modules.

[0095] It should be noted that although several modules or units of the device for performing actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0096] Figure 2 A schematic diagram of an electronic device suitable for implementing embodiments of the present invention is shown.

[0097] It should be noted that, Figure 2 The electronic device 1000 shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0098] like Figure 2 As shown, the electronic device 1000 includes a Central Processing Unit (CPU) 1001, which can perform various appropriate actions and processes based on programs stored in Read-Only Memory (ROM) 1002 or programs loaded from Storage Unit 1008 into Random Access Memory (RAM) 1003. The RAM 1003 also stores various programs and data required for system operation. The CPU 1001, ROM 1002, and RAM 1003 are interconnected via a bus 1004. An Input / Output (I / O) interface 1005 is also connected to the bus 1004.

[0099] The following components are connected to I / O interface 1005: an input section 1006 including a keyboard, mouse, etc.; an output section 1007 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 1008 including a hard disk, etc.; and a communication section 1009 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to I / O interface 1005 as needed. Removable media 1011, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 1010 as needed so that computer programs read from them can be installed into storage section 1008 as needed.

[0100] In particular, according to embodiments of the present invention, the processes described below with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a storage medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 1009, and / or installed from removable medium 1011. When the computer program is executed by central processing unit (CPU) 1001, it performs various functions defined in the system of this application.

[0101] It should be noted that the storage medium shown in the embodiments of the present invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, wherein computer-readable program code is carried. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any storage medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the storage medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0103] The units described in the embodiments of the present invention can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0104] It should be noted that, as another aspect, this application also provides a storage medium, which may be included in an electronic device or may exist independently without being assembled into the electronic device. The storage medium carries one or more programs, which, when executed by an electronic device, cause the electronic device to perform the methods described in the following embodiments.

[0105] In one embodiment, this application provides a computer program product including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0106] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0107] 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.

[0108] 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 defined only by the appended claims.

Claims

1. A method of digitized modeling of a radar transmitter, characterized in that, The method comprises: obtaining the output power of the power supply based on the power supply parameters in the radar transmitter; obtaining the transmission time, the waveform bandwidth, the pulse bandwidth, the pulse interval, the pulse repetition period, the modulation frequency and the phase of the modulator based on the modulator parameters; obtaining the oscillation frequency of the radio frequency oscillator based on the radio frequency oscillator parameters; obtaining the gain based on the power amplifier parameters; obtaining the waveform power based on the output power of the power supply and the gain; selecting the modulation frequency or the oscillation frequency as the working frequency; calculating the azimuth angle of arrival and the elevation angle of arrival of the radar beam to the detection object and the clutter object based on the radar position and the position of the detection object; in a simulation time period, the digital model of the radar transmitter obtains the waveform power, the transmission time, the pulse bandwidth, the pulse width, the pulse interval, the pulse repetition period, the working frequency, the phase and the azimuth angle of arrival and the elevation angle of arrival according to the functional parameters of the power supply, the modulator and the radio frequency oscillator or the power amplifier at the simulation time, and calculates the azimuth angle of arrival and the elevation angle of arrival according to the positions of the radar and the target at the simulation time; the waveform power, the transmission time, the pulse bandwidth, the pulse width, the pulse interval, the pulse repetition period, the working frequency, the phase, the azimuth angle of arrival and the elevation angle of arrival are taken as the transmission waveform parameters of the radar transmitter.

2. The method of claim 1, wherein, The calculation of the azimuth angle of arrival and the elevation angle of arrival of the radar beam to the detection object and the clutter object based on the radar position and the position of the detection object is specifically: Let the position coordinates of the radar be (X r ,Y r ,Z r ), and the coordinates of the target be (X t ,Y t ,Z t ), then the azimuth and elevation angles of arrival of the radar beam through the direct wave to the target are θ t and ψ t : The radar beam arrives at the target through the reflected wave in the azimuth and elevation angles θ M and ψ M This can be solved by the earth spherical model as: θ M = θ t where r e represents the earth radius length, R1 represents the distance from the lightning to the reflection point, and has wherein a is the spherical center angle corresponding to the mapping circular arc of R1 in the spherical model of the earth, a is where R G represents the length of the mapped circular arc in the Earth's spheroid model for the lightning to reach the target distance R, then and R is The azimuth and elevation angles of arrival of the radar beam to the clutter object are θ c and ψ c are where θ r radar beam initial azimuth angle, v r v rel and v res respectively denote the radar velocity, the target's line-of-sight velocity relative to the radar and the radar's velocity measurement resolution, then wherein R c represents the radar to clutter distance, when the clutter is a main lobe clutter When the clutter is a sidelobe clutter, the nearest non-ambiguous distance clutter is considered, at this time The calculated azimuth angles of arrival Θ = {θ t ,θ M ,θ c} and the pitch angles of arrival Ψ = {ψ t ,ψ M ,ψ c} of the radar beams reaching the detected objects are obtained.

3. A digitized modeling system for a radar transmitter, characterized by comprise: a power supply parameter acquisition module, configured to obtain the output power of the power supply based on the power supply parameters in the radar transmitter; a modulator parameter acquisition module, configured to obtain the transmission time, the waveform bandwidth, the pulse bandwidth, the pulse interval, the pulse repetition period, the modulation frequency and the phase of the modulator based on the modulator parameters; a radio frequency oscillator parameter acquisition module, configured to obtain the oscillation frequency of the radio frequency oscillator based on the radio frequency oscillator parameters; a power amplifier parameter acquisition module, configured to obtain the gain based on the power amplifier parameters; a waveform power calculation module, configured to obtain the waveform power based on the output power of the power supply and the gain; a working frequency selection module, configured to select the modulation frequency or the oscillation frequency as the working frequency; an angle of arrival calculation module, configured to calculate the azimuth angle of arrival and the elevation angle of arrival of the radar beam to the detection object and the clutter object based on the radar position and the position of the detection object; a transmission waveform simulation model, configured to simulate the transmission waveform based on the obtained parameters.

4. A storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the high-power narrow linewidth fiber laser excitation signal waveform intelligent optimization method in any one of claims 1 to 2.

5. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the high-power narrow linewidth fiber laser excitation signal waveform intelligent optimization method in any one of claims 1 to 2.

6. An electronic device, comprising: comprise: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the high-power narrow linewidth fiber laser excitation signal waveform intelligent optimization method in any one of claims 1 to 2 by executing the executable instructions.

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