Design method and device of short-time-staggered complete-polarization radar waveform and medium

Abstract

The invention discloses a method and equipment for designing a short-time-staggered full-polarization radar waveform and a medium, belongs to the technical field of full-polarization radars, and aims to solve the problems that when an existing full-polarization radar is used for time-sharing measurement, the measurement data rate is low, an introduced scattering matrix has a decorrelation effect, a full-polarization system is high in data rate and free of the decorrelation effect, and the measurement efficiency is low. And the isolation degree of a radar system is low. The method comprises the following steps: respectively establishing an H polarization emission signal model and a V polarization emission signal model; carrying out autocorrelation characteristic analysis and calculation on the fully-polarized radar transmitted waveform, and carrying out cross-correlation characteristic analysis and calculation on the fully-polarized radar transmitted waveform; calculating the ratio of the isolation of the radar system to obtain an amplitude ratio function; based on the isolation degree improvement effect function, determining the dislocation time of the complete polarization radar transmitted waveform; and the H-polarization emission signal and the V-polarization emission signal are emitted in a staggered manner and are received and processed at the same time.

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 radar was first seen in the meteorological field and was used for meteorological target observation. The original polarimetric radar was a single-polarization radar, which basically had no ability to obtain polarization information. In the 1950s, dual-polarization radars gradually appeared, which could measure a column of elements of the target polarization scattering matrix (PSM). After the 1970s, full-polarization radars gradually appeared. Full-polarization radars are mainly divided into two categories. One is a time-sharing polarization measurement system radar, which measures all elements of the target PSM by time-sharing the transmission and reception of a pair of orthogonal electromagnetic waves in polarization states. The other is a simultaneous measurement system radar, which transmits a pair of orthogonal waveforms in the simultaneous measurement system, and transmits and receives a pair of orthogonal polarizations at the same time to achieve full polarization measurement.

[0003] In the existing technology, the time-sharing full-polarization radar does not need to consider the isolation of the transmitted waveform, but the time-sharing measurement will lead to low measurement data rate and the introduced scattering matrix will have a decorrelation effect; at the same time, the full-polarization system has a high data rate and no decorrelation effect, but the radar system isolation is low. Therefore, how to improve the radar system isolation while avoiding the decorrelation effect at a high data rate has become an urgent problem to be solved. 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 problems: when the existing fully polarized radar performs time-sharing measurement, the measurement data rate is low and the introduced scattering matrix has a decorrelation effect, which makes the full polarization system data rate high and has no decorrelation effect, resulting in low isolation of the radar system.

[0005] The present application embodiment adopts the following technical solutions:

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

[0007] The embodiment of the present application improves the isolation by short-time staggered transmission of one polarization signal in the full polarization radar without significantly reducing the data rate or producing a decorrelation effect. This technology helps the full polarization radar system to obtain more accurate polarization information. That is, by transmitting a polarization pulse of another channel with a small staggered time delay and receiving two pulse echoes at the same time, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target polarization information. Compared with the existing technology, this technology will not significantly reduce the data rate or produce a decorrelation effect, and can further improve the waveform theoretical isolation on the basis of isolation improvement methods such as phase encoding.

[0008] In a feasible implementation, based on the H polarization transmission signal and the V polarization transmission signal of the full polarization radar transmission waveform, an H polarization transmission signal model and a V polarization 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 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 transmitting signal.

[0009] In a possible implementation, according to The positive slope linear frequency modulation signal s corresponding to the H polarization transmission signal model is obtained h ; Among them, T p represents pulse width; μ represents modulation frequency; rect(·) represents rectangular window function; t represents time; j and π are both 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] The first autocorrelation function R is obtained 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 the frequency modulation.

[0012] In a feasible implementation manner, 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] The first cross-correlation function R is obtained 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 used to calculate the ratio of the radar system isolation to obtain an amplitude ratio function, which specifically includes: ,

[0018] The amplitude ratio function I(t0) is obtained; wherein 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 offset time of the fully polarized radar transmission 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 transmitting waveform parameters, the staggered time of the fully polarized radar transmitting 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, the V-polarized transmit signal is briefly delayed in transmission control, and the H-polarized transmit signal and the V-polarized transmit signal are received and controlled simultaneously.

[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 comprising: 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 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, and 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] The present application provides a design method, device and medium for a short-time-staggered full-polarization radar waveform. Compared with the prior art, the embodiments of the present application have the following beneficial technical effects:

[0025] The embodiment of the present application improves the isolation by short-time staggered transmission of one polarization signal in the full polarization radar without significantly reducing the data rate or producing a decorrelation effect. This technology helps the full polarization radar system to obtain more accurate polarization information. That is, by transmitting a polarization pulse of another channel with a small staggered time delay and receiving two pulse echoes at the same time, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target polarization information. Compared with the existing technology, this technology will not significantly reduce the data rate or produce a decorrelation effect, and can further improve the waveform theoretical isolation on the basis of isolation improvement methods such as phase encoding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 A flow chart of a design method for a short-time-staggered full-polarization radar waveform provided in an embodiment of the present application;

[0028] 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;

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

[0030] Figure 4 A curve showing the change of isolation degree with the misalignment time when the transmitting waveform adopts a positive and negative slope frequency modulation step frequency signal in a simulation experiment provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of the structure of a device for designing 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 technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0033] The present application embodiment provides a method for designing 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-polarized radar transmission waveform, establish an H-polarized transmission signal model and a V-polarized transmission signal model respectively.

[0035] Specifically, Figure 2 A 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 in FIG. Figure 2 As shown, in the schematic 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 the present 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 the time quantity; n is a mathematical constant; e, j and π are all mathematical symbols.

[0036] Further, according to

[0037] Get 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 transmitting signal.

[0038] As a feasible implementation method, according to The positive slope linear frequency modulation signal s corresponding to the H polarization transmission signal model is obtained h Among them, T p represents pulse width; μ represents frequency modulation; rect(·) represents rectangular window function; t represents time; j and π are both mathematical symbols; The negative slope linear frequency modulation signal s corresponding to the V polarization transmission signal model is obtained v .

[0039] S102, analyzing and calculating the autocorrelation characteristics of the fully polarized radar transmit waveform according to the H-polarized transmit signal model, and obtaining a first autocorrelation function of the H-polarized transmit waveform and a second autocorrelation function of the corresponding positive slope linear frequency modulation signal.

[0040] Specifically, according to

[0041]

[0042] Get the first autocorrelation function R a,lfmsf (τ). Among them, u H is the H polarization 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.

[0043] Further, according to Get the second autocorrelation function R a,lfm (τ); where T p Indicates pulse width; μ Indicates the frequency modulation.

[0044] S103. 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.

[0045] Specifically, according to

[0046]

[0047] Get the first cross-correlation function R c,lfmsf (τ). Among them, 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 polarization transmission signal model; is the transpose of the V-polarized transmitted 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 offset time of the transmitted signal.

[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 regarding the isolation of the radar system to obtain an amplitude ratio function.

[0052] Specifically, according to

[0053] ,

[0054] The amplitude ratio function I(t0) is obtained. 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 transmitting 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). Wherein, C and S both represent Fresnel integral; Tp 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; and N is 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 of isolation under different staggered conditions can be analyzed by drawing a graph to select a suitable staggered time. When the full polarization system is 0, compared with the full polarization at the same time, when the staggered time is selected, the effect of isolation improvement can be obtained, that is, the isolation improvement effect function I add (t0).

[0061] S106. According to the staggered time, staggered transmission of the H polarized transmission signal and the V polarized transmission signal are performed and received and processed at the same time.

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

[0063] As a feasible implementation method, a simulation experiment process is used to verify a 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 positive and negative slope frequency modulation stepped frequency signal 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 FIG. 1 , the autocorrelation and cross-correlation functions of the transmitted waveform when the frequency-stepped frequency signal is modulated according to the positive and negative slopes, and as shown in FIG. Figure 4 The curve of the change of isolation degree with the offset time of the positive and negative slope frequency modulated stepped frequency signal shown can obviously achieve the design effect of the short-time offset full-polarization radar waveform. The present application is also applicable to full-polarization radars, and can improve the isolation degree by briefly delaying the transmission of one of the transmission signals 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 of the 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 polarization transmission signal and V polarization transmission signal of the full polarization radar transmission waveform, the H polarization transmission signal model and the V polarization transmission signal model are established respectively;

[0067] 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;

[0068] According to 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 to obtain 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;

[0069] Calculate 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 staggeredly transmitted and received and processed at the same time.

[0072] The embodiment of the present application improves the isolation by short-time staggered transmission of one polarization signal in the full polarization radar without significantly reducing the data rate or producing a decorrelation effect. This technology helps the full polarization radar system to obtain more accurate polarization information. That is, by transmitting a polarization pulse of another channel with a small staggered time delay and receiving two pulse echoes at the same time, the isolation is improved without significantly reducing the data rate or producing a decorrelation effect, thereby achieving accurate measurement of the target polarization information. Compared with the existing technology, this technology will not significantly reduce the data rate or produce a decorrelation effect, and can further improve the waveform theoretical isolation on the basis of isolation improvement methods such as phase encoding.

[0073] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description 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 as the 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 may be provided as methods, systems, or computer program products. Therefore, the present application may 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 may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. 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] The 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. The memory is an example of a computer-readable medium.

[0078] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. 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 disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape 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 temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0079] The above describes specific embodiments of the present application. In some cases, the actions or steps recorded in the specification can be performed in an order different from that in the embodiment and still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0080] The above is only 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 changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application should be included in 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 polarization transmission signal and V polarization transmission signal of the full polarization radar transmission waveform, the H polarization transmission signal model and the V polarization 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; 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; Calculate 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 the offset time of the fully polarized radar transmission waveform based on the 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 at the same time.

2. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, characterized in that: Based on the H-polarized transmission signal and the V-polarized transmission signal of the full-polarized radar transmission waveform, the H-polarized transmission signal model and the V-polarized transmission signal model are established respectively, which specifically include: 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 transmitting signal.

3. The method for designing a short-time-staggered full-polarization radar waveform according to claim 2, characterized in that: according to The positive slope linear frequency modulation signal s corresponding to the H polarization transmission signal model is obtained h ; Among them, T p represents pulse width; μ represents modulation frequency; rect(·) represents rectangular window function; t represents time; j and π are both 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, characterized in that: 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, specifically including: according to The first autocorrelation function R is obtained 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 pulse width; μ represents frequency modulation.

5. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, characterized in that: 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 The first cross-correlation function R is obtained 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 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, characterized in that: 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 specifically includes: according to ， The amplitude ratio function I(t0) is obtained; wherein 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, characterized in that: Determining the staggered 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 fully polarized radar transmitting waveform parameters, the staggered time of the fully polarized radar transmitting waveform is determined.

8. The method for designing a short-time-staggered full-polarization radar waveform according to claim 1, characterized in that: According to the staggered time, staggered transmission of the H polarized transmission signal and the V polarized transmission signal and simultaneous reception processing specifically include: 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-delayed 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, and the non-volatile computer-readable storage medium stores at least one program, each of which includes instructions, and when the instructions are executed by the terminal, the terminal executes the method for designing a short-error full-polarization radar waveform according to any one of claims 1-8.

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