A method, device and medium for designing a short-time full-polarization radar waveform

Abstract

The application discloses a short error time full polarization radar waveform design method and device and a medium, belongs to the full polarization radar technical field, and is used for solving the technical problem that the existing full polarization radar causes low measurement data rate and the introduced scattering matrix has decorrelation effect when measuring in time-sharing mode, makes the full polarization system data rate high and has no decorrelation effect, and causes low radar system isolation. The method comprises the following steps: respectively establishing an H polarization transmitting signal model and a V polarization transmitting signal model; analyzing and calculating the autocorrelation characteristics of the full polarization radar transmitting waveform; analyzing and calculating the cross-correlation characteristics of the full polarization radar transmitting waveform; calculating the ratio of the radar system isolation; obtaining an amplitude ratio function; determining the error time of the full polarization radar transmitting waveform based on the isolation improvement effect function; and transmitting the H polarization transmitting signal and the V polarization transmitting signal in error time and simultaneously receiving and processing.

Description

Technical Field

[0001] The present application relates to the technical field of full-polarization radar, and in particular to a design method, device, and medium for a short-time-delay full-polarization radar waveform. Background Art

[0002] Polarimetric radars were first used in meteorology for meteorological target observation. Initially, polarimetric radars were single-polarization radars, lacking the ability to obtain polarization information. In the 1950s, dual-polarization radars emerged, capable of measuring a single element of the target's polarimetric scattering matrix (PSM). After the 1970s, full-polarization radars gradually emerged. Full-polarimetric radars are primarily classified into two categories. One type is time-sharing polarimetric measurement radar, which measures all elements of a target's PSM by time-sharing the transmission and reception of a pair of orthogonal electromagnetic waves. The other type is simultaneous measurement radar, which transmits a pair of orthogonal waveforms and simultaneously transmits and receives a pair of orthogonal polarizations to achieve full polarimetric measurement.

[0003] Existing technologies for time-sharing, fully polarized radars do not consider isolation of the transmitted waveform. However, time-sharing measurements result in low data rates and a decorrelation effect in the introduced scattering matrix. Meanwhile, fully polarized systems offer high data rates and no decorrelation, but low radar system isolation. Therefore, improving radar system isolation while maintaining high data rates and avoiding decorrelation has become a pressing issue. Summary of the Invention

[0004] The embodiments of the present application provide a design method, device, and medium for a short-time-staggered, fully polarized radar waveform, which are used to solve the following technical problem: During time-sharing measurement, existing fully polarized radars result in a low measurement data rate and a decorrelation effect in the introduced scattering matrix. This results in a high data rate for the fully polarized system without a decorrelation effect, resulting in low radar system isolation.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] On the one hand, an embodiment of the present application provides a design method for a short-time-offset full-polarization radar waveform, comprising: establishing an H-polarization transmission signal model and a V-polarization transmission signal model based on the H-polarization transmission signal and the V-polarization transmission signal of the full-polarization radar transmission waveform respectively; analyzing and calculating the autocorrelation characteristics of the full-polarization radar transmission waveform according to the H-polarization transmission signal model, and obtaining a first autocorrelation function of the H-polarization transmission waveform and a second autocorrelation function of the corresponding positive-slope linear frequency modulation signal; and calculating the full-polarization radar waveform according to the H-polarization transmission signal model and the V-polarization transmission signal model. The cross-correlation characteristics of the transmitting waveform are analyzed and calculated to obtain a first cross-correlation function of the H-polarized transmitting waveform and a second cross-correlation function of the positive-slope linear frequency modulation signal and the negative-slope linear frequency modulation signal; the ratio of the first autocorrelation function and the first cross-correlation function is calculated with respect to the isolation of the radar system to obtain an amplitude ratio function; based on an isolation improvement effect function corresponding to the amplitude ratio function, an offset time of the transmitting waveform of the full-polarization radar is determined; and according to the offset time, the H-polarized transmitting signal and the V-polarized transmitting signal are transmitted at staggered times and received and processed simultaneously.

[0007] The embodiments of the present application improve isolation by staggering the transmission of one polarization signal in a fully polarized radar, without significantly reducing the data rate or producing a decorrelation effect. This technology helps fully polarized radar systems obtain more accurate polarization information. Specifically, by transmitting a polarization pulse from another channel with a small time delay and simultaneously receiving the two pulse echoes, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target's polarization information. Compared to existing technologies, this technology does not significantly reduce the data rate or produce a decorrelation effect, and can further improve the waveform theoretical isolation based on isolation improvement methods such as phase encoding.

[0008] In a feasible implementation, based on the H-polarized transmission signal and the V-polarized transmission signal of the full-polarization radar transmission waveform, an H-polarized transmission signal model and a V-polarized transmission signal model are established respectively, specifically including: Get the H polarization transmission signal model u H ; Where N is the number of sub-pulses; T r is the pulse repetition period; f0 is the carrier frequency, Δf is the frequency hopping interval; s h Represents a positive slope linear frequency modulation signal; t is the time quantity; n is a mathematical constant; e, j and π are all mathematical symbols; according to Get the V polarization transmission signal model u V ; Among them, s v Represents a negative slope linear frequency modulation signal; t0 is the offset time of the transmitted signal.

[0009] In a possible implementation, according to Obtain the positive slope linear frequency modulation signal s corresponding to the H polarization transmission signal model h ; Among them, T p represents pulse width; μ represents modulation frequency; rect(·) represents rectangular window function; t represents time; j and π are mathematical symbols; Obtain the negative slope linear frequency modulation signal s corresponding to the V polarization transmission signal model v .

[0010] In a feasible implementation, according to the H-polarized transmission signal model, the autocorrelation characteristics of the fully polarized radar transmission waveform are analyzed and calculated to obtain the first autocorrelation function of the H-polarized transmission waveform and the second autocorrelation function of the corresponding positive slope linear frequency modulation signal, specifically including: according to

[0011] Get the first autocorrelation function R a,lfmsf (τ); where, u H is the H-polarized transmission signal model; is the transpose of the H-polarized transmission signal model; Δf is the frequency hopping interval; N is the number of sub-pulses; t is the time quantity; τ and π are both mathematical symbols; R a,lfm (τ) is the second autocorrelation function of the positive slope linear frequency modulation signal; The second autocorrelation function R is obtained a,lfm (τ); where T p Indicates pulse width; μ Indicates frequency modulation.

[0012] In a feasible implementation, according to the H-polarized transmission signal model and the V-polarized transmission signal model, the cross-correlation characteristics of the full-polarized radar transmission waveform are analyzed and calculated to obtain a first cross-correlation function of the H-polarized transmission waveform and a second cross-correlation function of the positive-slope linear frequency modulation signal and the negative-slope linear frequency modulation signal, specifically including: according to

[0013]

[0014] Get the first cross-correlation function R c,lfmsf (τ); where R c,lfm (τ-t0) represents a second cross-correlation function between the positive slope linear frequency modulation signal and the negative slope linear frequency modulation signal; u H is the H-polarized transmission signal model; is the transpose of the V polarization transmission signal model; Δf is the frequency hopping interval; N is the number of sub-pulses; t is the time quantity; τ and π are both mathematical symbols; t0 is the transmission signal offset time; according to

[0015]

[0016] The second cross-correlation function R is obtained c,lfm (τ); where C and S both represent Fresnel integrals; T p represents pulse width; μ represents modulation frequency; j is a mathematical symbol.

[0017] In a feasible implementation manner, the first autocorrelation function and the first cross-correlation function are subjected to a ratio calculation related to the radar system isolation to obtain an amplitude ratio function, specifically comprising:

[0018] , obtain the amplitude ratio function I(t0); where R c,lfmsf is the first cross-correlation function, R a,lfmsf is the first autocorrelation function; C and S both represent Fresnel integrals; T p represents pulse width; μ represents frequency modulation; j and π are mathematical symbols; t0 is the offset time of the transmitted signal; Δf is the frequency hopping interval; N is the number of sub-pulses.

[0019] In a feasible implementation manner, based on the isolation improvement effect function corresponding to the amplitude ratio function, determining the staggered time of the fully polarized radar transmit waveform specifically includes:

[0020] , get the isolation improvement effect function I add (t0); where C and S both represent Fresnel integrals; T p represents pulse width; μ represents frequency modulation rate; j and π are mathematical symbols; t0 is the staggered time of the transmitted signal; Δf is the frequency hopping interval; N is the number of sub-pulses; according to the isolation change state under different staggered conditions in the isolation improvement effect function and based on the fully polarized radar transmit waveform parameters, the staggered time of the fully polarized radar transmit waveform is determined.

[0021] In a feasible implementation, according to the staggered time, the H-polarized transmit signal and the V-polarized transmit signal are staggered in time and received and processed simultaneously, specifically including: according to the staggered time, briefly delaying the transmission of the V-polarized transmit signal, and simultaneously controlling the reception of the H-polarized transmit signal and the V-polarized transmit signal.

[0022] In a second aspect, an embodiment of the present application further provides a device for designing a short-error, fully polarized radar waveform. The device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, so that the at least one processor can execute a method for designing a short-error, fully polarized radar waveform as described in any of the above embodiments.

[0023] In a third aspect, an embodiment of the present application further provides a non-volatile computer storage medium, characterized in that the storage medium is a non-volatile computer-readable storage medium, and the non-volatile computer-readable storage medium stores at least one program, each of which includes instructions. When the instructions are executed by a terminal, the terminal executes a method for designing a short-error full-polarization radar waveform as described in any of the above embodiments.

[0024] This application provides a method, device, and medium for designing a short-time-staggered, fully polarized radar waveform. Compared with the prior art, the embodiments of this application have the following beneficial technical effects:

[0025] The embodiments of the present application improve isolation by staggering the transmission of one polarization signal in a fully polarized radar, without significantly reducing the data rate or producing a decorrelation effect. This technology helps fully polarized radar systems obtain more accurate polarization information. Specifically, by transmitting a polarization pulse from another channel with a small time delay and simultaneously receiving the two pulse echoes, isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target's polarization information. Compared to existing technologies, this technology does not significantly reduce the data rate or produce a decorrelation effect, and can further improve waveform theoretical isolation based on isolation improvement methods such as phase encoding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments described in the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 A flow chart of a method for designing a short-time-staggered, fully polarized radar waveform provided in an embodiment of the present application;

[0028] Figure 2 Schematic diagrams of a simultaneous full-polarization radar transmission timing sequence (a), a time-sharing full-polarization radar transmission timing sequence (b), and a short-time-staggered full-polarization radar waveform transmission timing sequence (c) provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the autocorrelation and cross-correlation functions of a transmission waveform when a transmission waveform adopts a stepped frequency modulation signal with positive and negative slopes in a simulation experiment provided in an embodiment of the present application;

[0030] Figure 4 A curve showing how the isolation changes with the offset time when the transmission waveform adopts a stepped frequency signal with positive and negative slopes in a simulation experiment provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of the structure of a design device for a short-time-staggered fully polarized radar waveform provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0033] The embodiment of the present application provides a design method for a short-time-staggered full-polarization radar waveform, such as Figure 1 As shown, the design method of the short-time-staggered full-polarization radar waveform specifically includes steps S101-S106:

[0034] S101. Based on the H-polarized transmission signal and the V-polarized transmission signal of the full-polarization radar transmission waveform, establish an H-polarized transmission signal model and a V-polarized transmission signal model respectively.

[0035] Specifically, Figure 2 Schematic diagram of a simultaneous full-polarization radar transmission timing (a), a time-sharing full-polarization radar transmission timing (b), and a short-time-staggered full-polarization radar waveform transmission timing (c) provided in an embodiment of the present application, as shown Figure 2 As shown in the diagram of short-time-staggered full-polarization radar waveform emission timing (c), the horizontal axis is the radar emission timing, and the vertical axis is the stepped frequency signal f, which can clearly show the short-time-staggered full-polarization radar waveform emission timing of this application, and intuitively show the emission timing under the simultaneous full-polarization radar emission timing (a) and the time-sharing full-polarization radar emission timing (b), thereby achieving effect comparison. The specific implementation method is: according to Get the H polarization transmission signal model u H Where, N is the number of sub-pulses; T r is the pulse repetition period; f0 is the carrier frequency, Δf is the frequency hopping interval; s hrepresents a positive slope linear frequency modulation signal; t is a time quantity; n is a mathematical constant; e, j and π are mathematical symbols.

[0036] Further, according to

[0037] obtain a V polarization transmit signal model u V , wherein s v represents a negative slope linear frequency modulation signal; t0 is a transmit signal offset time.

[0038] As a feasible implementation manner, according to obtain a positive slope linear frequency modulation signal s h corresponding to the H polarization transmit signal model. p represents a pulse width; μ represents a frequency modulation rate; rect(·) represents a rectangular window function; t is a time quantity; j and π are mathematical symbols; and further according to obtain a negative slope linear frequency modulation signal s v corresponding to the V polarization transmit signal model.

[0039] S102, according to the H polarization transmit signal model, perform autocorrelation characteristic analysis and calculation on the full polarization radar transmit waveform, to obtain a first autocorrelation function of the H polarization transmit waveform and a second autocorrelation function of the positive slope linear frequency modulation signal corresponding thereto.

[0040] Specifically, according to

[0041]

[0042] obtain a first autocorrelation function R a,lfmsf (τ). Wherein u H is the H polarization transmit signal model; is a transpose of the H polarization transmit signal model; Δf is a frequency hopping interval; N is a number of sub-pulses; t is a time quantity; τ and π are mathematical symbols; and R a,lfm (τ) is the second autocorrelation function of the positive slope linear frequency modulation signal.

[0043] Further, according to obtain a second autocorrelation function R a,lfm (τ); wherein T p represents a pulse width; μ represents a frequency modulation rate.

[0044] S103, according to the H polarization transmit signal model and the V polarization transmit signal model, perform cross-correlation characteristic analysis and calculation on the full polarization radar transmit waveform, to obtain a first cross-correlation function of the H polarization transmit waveform and a second cross-correlation function of the positive slope linear frequency modulation signal and the negative slope linear frequency modulation signal.

[0045] Specifically, according to

[0046]

[0047] Get the first cross-correlation function R c,lfmsf (τ). Where R c,lfm (τ-t0) represents the second cross-correlation function between the positive slope linear frequency modulation signal and the negative slope linear frequency modulation signal; u H is the H-polarized transmission signal model; is the transpose of the V-polarization transmission signal model; Δf is the frequency hopping interval; N is the number of sub-pulses; t is the time quantity; τ and π are mathematical symbols; t0 is the transmission signal offset time.

[0048] Further, according to

[0049]

[0050] Get the second cross-correlation function R c,lfm (τ). Where C and S both represent Fresnel integrals; T p represents pulse width; μ represents modulation frequency; j is a mathematical symbol.

[0051] S104 , performing a ratio calculation on the first autocorrelation function and the first cross-correlation function related to the isolation of the radar system to obtain an amplitude ratio function.

[0052] Specifically, according to

[0053]

[0054] , we get the amplitude ratio function I(t0). Where R c,lfmsf is the first cross-correlation function, R a,lfmsf is the first autocorrelation function; C and S both represent Fresnel integrals; T p represents pulse width; μ represents frequency modulation; j and π are mathematical symbols; t0 is the offset time of the transmitted signal; Δf is the frequency hopping interval; N is the number of sub-pulses.

[0055] S105: Determine the offset time of the fully polarized radar transmit waveform based on the isolation improvement effect function corresponding to the amplitude ratio function.

[0056] Specifically, according to

[0057]

[0058] , get the isolation improvement effect function I add(t0). Where C and S both represent Fresnel integrals; Tp represents pulse width; μ represents frequency modulation; j and π are mathematical symbols; t0 represents the offset time of the transmitted signal; Δf represents the frequency hopping interval; and N represents the number of sub-pulses.

[0059] Furthermore, according to the isolation change state under different staggered conditions in the isolation improvement effect function and based on the fully polarized radar transmitting waveform parameters, the staggered time of the fully polarized radar transmitting waveform is determined.

[0060] In one embodiment, the parameters of the proposed full polarization transmission waveform system can be substituted into the amplitude ratio function, and the change in isolation under different staggering conditions can be analyzed by drawing a graph to select the appropriate staggering time. When the full polarization system is 0, compared with the full polarization at the same time, when the staggering time is selected, the effect of the isolation improvement can be obtained, that is, the isolation improvement effect function I add (t0).

[0061] S106 : Stagger the transmission of the H-polarized transmission signal and the V-polarized transmission signal according to the staggered time and receive and process them simultaneously.

[0062] Specifically, according to the offset time, the V-polarized transmission signal is controlled to be transmitted with a short delay, and the H-polarized transmission signal and the V-polarized transmission signal are controlled to be received simultaneously.

[0063] As a feasible implementation method, a simulation experiment process is used to verify the design method of a short-time-staggered full-polarization radar waveform of the present application. Figure 3 A schematic diagram of the autocorrelation and cross-correlation functions of a transmission waveform when the transmission waveform adopts a stepped frequency signal with positive and negative slopes in a simulation experiment provided in an embodiment of the present application. Figure 4 The curve of the change of isolation degree with the offset time when the transmission waveform adopts a positive and negative slope frequency modulation step frequency signal in a simulation experiment provided in the embodiment of the present application. Figure 3 As shown in the figure, the autocorrelation and cross-correlation functions of the transmitted waveform when the frequency step frequency signal is modulated according to the positive and negative slopes, and Figure 4 The curves of the change of isolation with the offset time for the positive and negative slope frequency-modulated stepped frequency signal shown can clearly show the design effect of the short-time offset full-polarization radar waveform. The present application is also applicable to full-polarization radars, and by briefly delaying the transmission of one of the transmission signals, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect.

[0064] In addition, the embodiment of the present application also provides a design device for a short-time-staggered full-polarization radar waveform, such as Figure 5 As shown, the design device 500 for a short-time-staggered full-polarization radar waveform specifically includes:

[0065] At least one processor 501. And a memory 502 in communication with the at least one processor 501. The memory 502 stores instructions that can be executed by the at least one processor 501, so that the at least one processor 501 can execute:

[0066] Based on the H-polarized transmission signal and V-polarized transmission signal of the full-polarization radar transmission waveform, the H-polarized transmission signal model and the V-polarized transmission signal model are established respectively;

[0067] Based on the H-polarized transmit signal model, the autocorrelation characteristics of the fully polarized radar transmit waveform are analyzed and calculated to obtain the first autocorrelation function of the H-polarized transmit waveform and the second autocorrelation function of the corresponding positive-slope linear frequency modulation signal.

[0068] Based on the H-polarization transmission signal model and the V-polarization transmission signal model, the cross-correlation characteristics of the full-polarization radar transmission waveform are analyzed and calculated, and the first cross-correlation function of the H-polarization transmission waveform and the second cross-correlation function of the positive-slope linear frequency modulation signal and the negative-slope linear frequency modulation signal are obtained.

[0069] Calculating the ratio of the first autocorrelation function to the first cross-correlation function in relation to the isolation of the radar system to obtain an amplitude ratio function;

[0070] Based on the isolation improvement effect function corresponding to the amplitude ratio function, the offset time of the fully polarized radar transmission waveform is determined;

[0071] According to the staggered time, the H-polarized transmission signal and the V-polarized transmission signal are staggered in transmission time and received and processed simultaneously.

[0072] The embodiments of the present application improve isolation by staggering the transmission of one polarization signal in a fully polarized radar, without significantly reducing the data rate or producing a decorrelation effect. This technology helps fully polarized radar systems obtain more accurate polarization information. Specifically, by transmitting a polarization pulse from another channel with a small time delay and simultaneously receiving the two pulse echoes, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target's polarization information. Compared to existing technologies, this technology does not significantly reduce the data rate or produce a decorrelation effect, and can further improve the waveform theoretical isolation based on isolation improvement methods such as phase encoding.

[0073] The various embodiments in this application are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the device and non-volatile computer storage medium embodiments are generally similar to the method embodiments, so their descriptions are relatively simple. For relevant parts, refer to the descriptions of the method embodiments.

[0074] The devices and media provided in the embodiments of the present application correspond one-to-one to the methods. Therefore, the devices and media also have similar beneficial technical effects to their corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the devices and media will not be repeated here.

[0075] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0076] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0077] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0078] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0079] The foregoing description is of specific embodiments of the present application. In some cases, the actions or steps described in the specification may be performed in a different order than that shown in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0080] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included within the scope of the specification of the present application.

Claims

1. A method for designing a short-time-staggered full-polarization radar waveform, characterized in that: The method comprises: Based on the H-polarized transmission signal and V-polarized transmission signal of the full-polarization radar transmission waveform, the H-polarized transmission signal model and the V-polarized transmission signal model are established respectively; According to the H-polarized transmission signal model, the autocorrelation characteristics of the fully polarized radar transmission waveform are analyzed and calculated to obtain a first autocorrelation function of the H-polarized transmission waveform and a second autocorrelation function of the corresponding positive-slope linear frequency modulation signal; performing cross-correlation analysis and calculation on the full-polarization radar transmit waveform according to the H-polarization transmit signal model and the V-polarization transmit signal model to obtain a first cross-correlation function of the H-polarization transmit waveform and a second cross-correlation function of the positive-slope linear frequency modulation signal and the negative-slope linear frequency modulation signal; Calculating the ratio of the first autocorrelation function to the first cross-correlation function in relation to the isolation of the radar system to obtain an amplitude ratio function; determining a staggered time of the fully polarized radar transmit waveform based on an isolation improvement effect function corresponding to the amplitude ratio function; According to the staggered time, the H-polarized transmission signal and the V-polarized transmission signal are staggered in transmission time and received and processed simultaneously.

2. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: Based on the H-polarized transmission signal and V-polarized transmission signal of the full-polarization radar transmission waveform, the H-polarized transmission signal model and the V-polarized transmission signal model are established respectively, specifically including: according to Get the H polarization transmission signal model u H ; Where N is the number of sub-pulses; T r is the pulse repetition period; f0 is the carrier frequency, Δf is the frequency hopping interval; s h represents a positive slope linear frequency modulation signal; t is a time quantity; n is a mathematical constant; e, j, and π are all mathematical symbols; according to Get the V polarization transmission signal model u V ; Among them, s v Represents a negative slope linear frequency modulation signal; t0 is the offset time of the transmitted signal.

3. The method for designing a short-time-staggered full-polarization radar waveform according to claim 2, wherein: according to Obtain the positive slope linear frequency modulation signal s corresponding to the H polarization transmission signal model h ; Among them, T p represents pulse width; μ represents frequency modulation; rect(·) represents rectangular window function; t represents time; j and π are mathematical symbols; according to Obtain the negative slope linear frequency modulation signal s corresponding to the V polarization transmission signal model v .

4. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: According to the H-polarized transmit signal model, the autocorrelation characteristics of the fully polarized radar transmit waveform are analyzed and calculated to obtain a first autocorrelation function of the H-polarized transmit waveform and a second autocorrelation function of the corresponding positive-slope linear frequency modulation signal, specifically including: according to Get the first autocorrelation function R a,lfmsf (τ); where, u H is the H-polarized transmission signal model; is the transpose of the H-polarized transmission signal model; Δf is the frequency hopping interval; N is the number of sub-pulses; t is the time quantity; τ and π are both mathematical symbols; R a,lfm (τ) is the second autocorrelation function of the positive slope linear frequency modulation signal; according to The second autocorrelation function R is obtained a,lfm (τ); where T p represents the pulse width; μ represents the modulation frequency.

5. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: According to the H-polarized transmit signal model and the V-polarized transmit signal model, cross-correlation characteristics of the fully polarized radar transmit waveform are analyzed and calculated to obtain a first cross-correlation function of the H-polarized transmit waveform and a second cross-correlation function of the positive-slope linear frequency modulation signal and the negative-slope linear frequency modulation signal, specifically including: according to Get the first cross-correlation function R c,lfmsf (τ); where R c,lfm (τ-t0) represents a second cross-correlation function between the positive slope linear frequency modulation signal and the negative slope linear frequency modulation signal; u H is the H-polarized transmission signal model; is the transpose of the V-polarized transmission signal model; Δf is the frequency hopping interval; N is the number of sub-pulses; t is the time quantity; τ and π are both mathematical symbols; t0 is the transmission signal offset time; according to The second cross-correlation function R is obtained c,lfm (τ); where C and S both represent Fresnel integrals; T p represents pulse width; μ represents modulation frequency; j is a mathematical symbol.

6. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: Calculating the ratio of the first autocorrelation function to the first cross-correlation function related to the isolation of the radar system to obtain an amplitude ratio function specifically includes: according to Get the amplitude ratio function I(t0); where R c,lfmsf is the first cross-correlation function, R a,lfmsf is the first autocorrelation function; C and S both represent Fresnel integrals; T p represents pulse width; μ represents frequency modulation; j and π are mathematical symbols; t0 is the offset time of the transmitted signal; Δf is the frequency hopping interval; N is the number of sub-pulses.

7. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: Determining the offset time of the fully polarized radar transmit waveform based on the isolation improvement effect function corresponding to the amplitude ratio function specifically includes: according to Get the isolation improvement effect function I add (t0); where C and S both represent Fresnel integrals; T p represents pulse width; μ represents frequency modulation; j and π are mathematical symbols; t0 is the offset time of the transmitted signal; Δf is the frequency hopping interval; N is the number of sub-pulses; According to the isolation change state under different staggered conditions in the isolation improvement effect function and based on the full-polarization radar transmission waveform parameters, the staggered time of the full-polarization radar transmission waveform is determined.

8. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, wherein: The H-polarized transmit signal and the V-polarized transmit signal are transmitted at staggered times and received simultaneously according to the staggered time, specifically comprising: According to the offset time, the V-polarized transmission signal is controlled to be transmitted with a short delay, and the H-polarized transmission signal and the V-polarized transmission signal are controlled to be received simultaneously.

9. A design device for short-time-staggered full-polarization radar waveform, characterized in that: The device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, so that the at least one processor can execute the method for designing a short-time-error full-polarization radar waveform according to any one of claims 1-8.

10. A non-volatile computer storage medium, characterized in that The storage medium is a non-volatile computer-readable storage medium, storing at least one program. Each program includes instructions. When executed by a terminal, the instructions cause the terminal to execute the method for designing a short-error full-polarization radar waveform according to any one of claims 1 to 8.

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