Detection and recognition integrated waveform design method, device, equipment, medium and product

Abstract

The invention discloses a detection and recognition integrated waveform design method, device and equipment, a medium and a product. The method comprises the following steps: dividing the time length of a waveform according to a time element, a time frame and a time slot structure; for each time slot, a time slot waveform frame structure is set to be composed of a jitter segment, a synchronization segment and a data segment, and the data segment comprises a Gaussian minimum shift keying (GMSK) modulation data segment and a linear frequency modulation (LFM) modulation data segment; respectively setting a GMSK modulation signal parameter and an LFM modulation signal parameter according to communication system demand information; performing pseudo-random hopping design on the pulse frequencies of the synchronization segment and the GMSK modulation data segment to obtain a pseudo-random frequency hopping pattern; and generating a GMSK modulation section waveform and an LFM modulation section waveform according to the GMSK modulation signal parameter and the LFM modulation signal parameter so as to form an integrated waveform. According to the embodiment of the invention, the integrated waveform can realize communication, detection and identification functions at the same time, the waveform resource utilization rate is high, and the anti-interference capability is relatively high.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and in particular relates to a detection, communication and recognition integrated waveform design method, device, equipment, medium and product. Background Art

[0002] Multifunctional integrated waveforms enable synergistic efficiencies across multiple approaches on a single platform. Detection, communication, and identification have different, even conflicting, waveform requirements, making joint global optimal characterization difficult. Current waveform characterization methods cannot simultaneously achieve detection, communication, and identification, suffer from poor integration across multiple functions, and are difficult to implement in engineering applications. Summary of the Invention

[0003] The embodiments of the present application provide a detection, communication and recognition integrated waveform design method, device, equipment, medium and product, which are used to at least solve the problem that the waveform characterization method in the related art cannot simultaneously realize the detection, communication and recognition functions, resulting in poor comprehensiveness of multiple functions.

[0004] In a first aspect, an embodiment of the present application provides a waveform design method for integrated detection and recognition, comprising:

[0005] Divide the time length of the waveform into time units, time frames, and time slot structures;

[0006] For each time slot, the time slot waveform frame structure is set to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization; the synchronization segment is configured to perform distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions; the data segment is configured to perform data exchange between network members, including Gaussian minimum shift keying (GMSK) modulation data segments and linear frequency modulation (LFM) modulation data segments;

[0007] According to the communication system requirements, set the GMSK modulation signal parameters and LFM modulation signal parameters respectively;

[0008] The pulse frequencies of the synchronization segment and the GMSK modulated data segment are pseudo-randomly hopped to obtain a pseudo-random frequency hopping pattern;

[0009] According to the GMSK modulation signal parameters and the LFM modulation signal parameters, a GMSK modulation segment waveform and an LFM modulation segment waveform are generated to form an integrated waveform.

[0010] In a second aspect, an embodiment of the present application provides a waveform design device for integrated detection and recognition, the device comprising:

[0011] A division module is used to divide the time length of the waveform into time units, time frames, and time slot structures;

[0012] A first setting module is configured to set, for each time slot, a time slot waveform frame structure to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization, the synchronization segment is configured to perform distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions, and the data segment is configured to perform data exchange between network members, including a Gaussian minimum shift keying (GMSK) modulated data segment and a linear frequency modulation (LFM) modulated data segment;

[0013] The second setting module is used to set the GMSK modulation signal parameters and the LFM modulation signal parameters respectively according to the communication system requirement information;

[0014] A frequency hopping module is used to perform pseudo-random hopping design on the pulse frequency of the synchronization segment and the GMSK modulated data segment to obtain a pseudo-random frequency hopping pattern;

[0015] The generating module is used to generate a GMSK modulation segment waveform and an LFM modulation segment waveform according to the GMSK modulation signal parameters and the LFM modulation signal parameters to form an integrated waveform.

[0016] In a third aspect, an embodiment of the present application provides an electronic device comprising: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, the steps of the integrated detection and recognition waveform design method as described in any one of the embodiments of the first aspect are implemented.

[0017] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, the steps of the integrated detection and recognition waveform design method as described in any one of the embodiments of the first aspect are implemented.

[0018] In a fifth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the steps of the integrated waveform design method for detection and recognition provided in the first aspect of the embodiment of the present application.

[0019] The integrated waveform design method, device, equipment, medium and product for detection, communication and identification of the embodiments of the present application implement frequency hopping pattern design in the data segment to embed identity recognition information, and add complex modulated radar pulse waveforms in the idle segment of the communication signal time slot to realize an integrated waveform design based on Gaussian minimum shift keying (GMSK) and linear frequency modulation (LFM) modulation. The integrated waveform thus generated can simultaneously realize communication, detection and identification functions, and has a strong waveform resource utilization rate; moreover, it can increase the number of accumulated pulses, enhance the detection performance while realizing the communication function, and at the same time have a strong anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a flow chart of a waveform design method for integrated detection and recognition provided by an embodiment of the present application;

[0022] Figure 2 Schematic diagram of a complete time slot waveform frame structure of an integrated waveform provided by an embodiment of the present application;

[0023] Figure 3 This is a time-frequency distribution diagram of multi-network group signals provided in an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the GMSK modulation principle provided by an embodiment of the present application;

[0025] Figure 5 Schematic diagram of the frequency-time relationship of the linear frequency modulation signal provided in an embodiment of the present application;

[0026] Figure 6 This is a schematic structural diagram of a waveform design device for integrated detection and recognition provided in an embodiment of the present application;

[0027] Figure 7 This is a structural diagram of an electronic device provided in an embodiment of the present application.

[0028] Reference numerals:

[0029] The integrated waveform design device 600 includes a division module 601, a first setting module 602, a second setting module 603, a frequency hopping module 604, and a generation module 605.

[0030] Electronic device 700 , processor 701 , memory 702 , communication interface 703 , bus 710 . DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0033] Multifunctional integrated waveforms enable synergistic efficiencies across multiple approaches on a single platform. Detection, communication, and identification have different, even conflicting, waveform requirements, making joint global optimal characterization difficult. Current waveform characterization methods cannot simultaneously achieve detection, communication, and identification, suffer from poor integration across multiple functions, and are difficult to implement in engineering applications.

[0034] Currently, there are two main methods for integrated waveform design:

[0035] The first method involves integrated waveform design based on the detection waveform. This method compromises communication rate, bit error rate, and radar detection performance by modulating communication information onto the radar waveform. However, this method results in a waveform with large envelope fluctuations and a wide power spectrum density, resulting in insufficient communication efficiency.

[0036] The second method is an integrated waveform design based on the communication waveform. This method uses orthogonal frequency division multiplexing (OFDM) and orthogonal time-frequency-space (OTFS) modulation to achieve integrated radar communication design by modifying the communication waveform. However, this method suffers from extremely severe interference between subcarriers caused by Doppler spread in high-dynamic scenarios, which can easily lead to ambiguity in multi-target resolution.

[0037] In order to solve the problems of related technologies, the embodiments of the present application provide a detection and recognition integrated waveform design method, device, equipment, medium and product.

[0038] The following, in conjunction with the accompanying drawings, describes in detail the detection and recognition integrated waveform design method provided in the embodiment of the present application through specific embodiments and their application scenarios.

[0039] Figure 1 FIG. 1 is a flow chart showing a waveform design method for integrated detection and recognition according to an embodiment of the present application. Figure 1 As shown, the detection and recognition integrated waveform design method may specifically include the following steps:

[0040] S101, dividing the time length of the waveform into time units, time frames, and time slot structures;

[0041] S102. For each time slot, set the time slot waveform frame structure to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization, the synchronization segment is configured to perform distance and velocity parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions, and the data segment is configured to perform data exchange between network members, including a Gaussian minimum shift keying (GMSK) modulated data segment and a linear frequency modulation (LFM) modulated data segment;

[0042] S103, setting GMSK modulation signal parameters and LFM modulation signal parameters respectively according to communication system requirement information;

[0043] S104, performing pseudo-random hopping design on the pulse frequencies of the synchronization segment and the GMSK modulated data segment to obtain a pseudo-random frequency hopping pattern;

[0044] S105 . Generate a GMSK modulation segment waveform and an LFM modulation segment waveform according to the GMSK modulation signal parameters and the LFM modulation signal parameters to form an integrated waveform.

[0045] Therefore, a frequency hopping pattern is designed in the data segment to embed identity recognition information, and a complex modulated radar pulse waveform is added to the idle segment of the communication signal time slot to realize an integrated waveform design based on Gaussian minimum shift keying (GMSK) and linear frequency modulation (LFM) modulation. The integrated waveform generated in this way can realize communication, detection and identification functions at the same time, and has a strong waveform resource utilization rate; moreover, it can increase the number of accumulated pulses, enhance the detection performance while realizing the communication function, and at the same time have a strong anti-interference ability.

[0046] The specific implementation methods of the above steps are introduced below.

[0047] In some embodiments, in S101, the integrated waveform adopts a mixed access method of time division multiple access (TDMA) and frequency division multiple access (FDMA), divides time into time units, time frames, and time slot structures, and sets the time unit length to T A , the time frame length is T B , the time slot length is T C Among them, the time slot is the smallest unit of system time division and is also the basic time unit for system members to transmit or receive messages in the network.

[0048] In some embodiments, in S102, each time slot is composed of a jitter segment, a synchronization segment, and a data segment. Figure 2 , is a schematic diagram of a complete time slot waveform frame structure of the integrated waveform of this embodiment. Figure 2 As shown, the time slot waveform frame structure includes a jitter segment, a synchronization segment and a data segment, wherein the data segment includes a Gaussian minimum shift keying GMSK modulation data segment and a linear frequency modulation LFM modulation data segment.

[0049] Specifically, there is random timing jitter before the start of each time slot data segment, and the range of the jitter segment length is δ; after the target is synchronized within the network, the jitter segment length is fixed. The synchronization segment pulse is used to achieve distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging positioning and network identification functions. The number of synchronization segment pulses is set to M, and the pulse width of the synchronization segment is T q , the pulse interval of the synchronization segment is T x The data segment consists of GMSK modulation pulse segment and LFM modulation pulse segment, which is used to realize data interaction between network members. The number of data pulses is set to N+P (N GMSK modulation pulses and P LFM modulation pulses), and the pulse width of the data segment is T p , the pulse interval of the data segment is T y .

[0050] In this way, compared with the time slot waveform frame structure in the related art that only includes a jitter segment, a synchronization segment and a GMSK modulated data segment, this embodiment adds a complex modulated radar pulse waveform to the idle segment of the communication signal time slot, and the LFM modulated data segment can realize the detection function.

[0051] In some embodiments, in S103, by setting GMSK modulation signal parameters and LFM modulation signal parameters that are adapted to the communication system requirement information, including but not limited to: number of pulses, pulse width, and pulse interval, a corresponding waveform structure can be generated, and the waveform structure can be changed by adjusting the modulation parameters in real time, which is highly flexible.

[0052] Furthermore, in some embodiments, in S104, the pulse frequency of the synchronization segment and the GMSK modulated data segment in each time slot is pseudo-randomly jumped, and the frequency hopping range is set to [f L ,f H ], the number of frequency points is M, and the frequency point interval is Δf=(f H -f L ) / M.

[0053] Figure 3 The time-frequency distribution diagram of multi-network group signals is shown. Figure 3 Different colors represent different network groups, and each network group has multiple signals (sources). Figure 3As shown in the figure, taking two network groups operating simultaneously as an example, for the same color frequency hopping signal, in time slot 1, 1 represents the first signal of the network group, and in time slot 2, 2 represents the second signal of the network group. In this way, each network in the multi-network structure has a different frequency hopping pattern, allowing multiple communication networks to operate simultaneously, thereby achieving the goal of expanding communication capacity.

[0054] Thus, frequency hopping is achieved through GMSK modulation of the data segment, enabling both communication and identification capabilities. Furthermore, the rapid frequency hopping makes it difficult for interferers to predict the next frequency. If only a portion of the frequency band is blocked, data can still be transmitted in the remaining bands. Even if certain frequencies are interfered with, signals at other frequencies can still maintain communication. Signal energy is dispersed across a wide bandwidth, making signals at a single frequency difficult to detect or intercept, thus providing a certain degree of anti-interference capability.

[0055] Further, Figure 4 The GMSK modulation principle diagram is shown in FIG. Figure 4 As shown, in S105, the GMSK modulation data segment is configured to pre-modulate and filter the baseband signal through a Gaussian filter, and then perform minimum shift keying MSK modulation on the output signal to obtain a GMSK modulation signal.

[0056] Specifically, the GMSK modulated signal is:

[0057]

[0058] Among them, f c represents frequency hopping carrier; t represents time;

[0059] Indicates the phase,

[0060] a i represents the i-th code element symbol, T represents the symbol period, τ represents the pulse width, and π represents the circumference of a circle;

[0061] g(t) represents the rectangular impulse response of the Gaussian filter, which is expressed as:

[0062]

[0063] in, B T represents the 3dB bandwidth of the Gaussian filter;

[0064]

[0065] Where x represents the integral variable, and its value range is (t, ∞).

[0066] In some embodiments, the time domain expression of the LFM modulated pulse is:

[0067]

[0068] Among them, f c Indicates the carrier frequency; K r =B / τ represents the frequency modulation slope, B represents the signal bandwidth, τ represents the pulse width of the data segment; j represents an imaginary number;

[0069] rect(t / τ) represents a rectangular signal, and its expression is:

[0070]

[0071] As an optional embodiment, further, Figure 5 Figure 2 shows a frequency-time relationship diagram of a linear frequency modulation signal. Figure 5 As shown, the frequency of the linear frequency modulation signal changes with time, and its variation curve can be expressed by the following formula, that is, the instantaneous frequency of the LFM modulation signal is:

[0072] f0+K r t(-τ / 2≤t≤τ / 2);

[0073] Wherein, f0 represents the center frequency, which is a preset value.

[0074] In summary, the embodiment of the present application realizes joint modulation by designing an integrated waveform frame structure and implementing fast frequency hopping in the synchronization segment and the GMSK modulation data segment to have anti-interference capability, and finally obtains a fully shared integrated waveform that realizes detection, communication, and identification functions at the same time.

[0075] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, 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.

[0076] Based on the same technical concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides an integrated detection and recognition waveform design device 600.

[0077] like Figure 6 As shown, the detection and recognition integrated waveform design device 600 may include:

[0078] A division module 601 is used to divide the time length of the waveform into time elements, time frames, and time slot structures;

[0079] A first setting module 602 is configured to set, for each time slot, a time slot waveform frame structure to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization, the synchronization segment is configured to perform distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions, and the data segment is configured to perform data exchange between network members, including a Gaussian minimum shift keying (GMSK) modulated data segment and a linear frequency modulation (LFM) modulated data segment;

[0080] The second setting module 603 is used to set the GMSK modulation signal parameters and the LFM modulation signal parameters respectively according to the communication system requirement information;

[0081] The frequency hopping module 604 is used to perform pseudo-random hopping design on the pulse frequency of the synchronization segment and the GMSK modulated data segment to obtain a pseudo-random frequency hopping pattern;

[0082] The generating module 605 is configured to generate a GMSK modulation segment waveform and an LFM modulation segment waveform according to the GMSK modulation signal parameters and the LFM modulation signal parameters, so as to form an integrated waveform.

[0083] Optionally, the GMSK modulated data segment is configured to pre-modulate and filter the baseband signal through a Gaussian filter, and then perform minimum shift keying MSK modulation on the output signal to obtain a GMSK modulated signal.

[0084] Optionally, the GMSK modulated signal is:

[0085]

[0086] Among them, f c represents frequency hopping carrier; t represents time;

[0087] Indicates the phase,

[0088] a i represents the i-th code element symbol, T represents the symbol period, τ represents the pulse width, and π represents the circumference of a circle;

[0089] g(t) represents the rectangular impulse response of the Gaussian filter, which is expressed as:

[0090]

[0091] in, B T represents the 3dB bandwidth of the Gaussian filter;

[0092]

[0093] Where x represents the integral variable, and its value range is (t, ∞).

[0094] Optionally, the time domain expression corresponding to the LFM modulated data segment is:

[0095]

[0096] Among them, f c Indicates the carrier frequency; K r =B / τ represents the frequency modulation slope, B represents the signal bandwidth, τ represents the pulse width of the data segment; j represents an imaginary number;

[0097] rect(t / τ) represents a rectangular signal, and its expression is:

[0098]

[0099] Optionally, the instantaneous frequency of the LFM modulated signal is:

[0100] f0+K r t(-τ / 2≤t≤τ / 2);

[0101] Wherein, f0 represents the center frequency, which is a preset value.

[0102] Optionally, the integrated waveform adopts a hybrid access method of time division multiple access and frequency division multiple access.

[0103] It should be noted that, for the convenience of description, the above devices are described as being divided into various modules according to their functions. Of course, when implementing this application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0104] The device of the above embodiment is used to implement the corresponding detection and recognition integrated waveform design method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0105] Based on the same technical concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides an electronic device.

[0106] Figure 7 A more specific hardware structure diagram of an electronic device provided by this embodiment is shown.

[0107] The electronic device 700 may include a processor 701 and a memory 702 storing computer program instructions.

[0108] Specifically, the processor 701 may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0109] The memory 702 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 702 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 702 may include removable or non-removable (or fixed) media. Where appropriate, the memory 702 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 702 is a non-volatile solid-state memory.

[0110] In certain embodiments, the memory may include read-only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present application.

[0111] The processor 701 reads and executes computer program instructions stored in the memory 702 to implement any one of the detection and recognition integrated waveform design methods in the above embodiments.

[0112] In some examples, the electronic device 700 may further include a communication interface 703 and a bus 710. Figure 7 As shown, the processor 701, the memory 702, and the communication interface 703 are connected via a bus 710 and communicate with each other.

[0113] The communication interface 703 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0114] Bus 710 includes hardware, software or both, and the components of online data flow metering equipment are coupled to each other. For example, but not limitation, bus 710 may include accelerated graphics port (AGP) or other graphics bus, enhanced industry standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industry standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 710 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0115] Illustratively, the electronic device 700 may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA).

[0116] Based on the same technical concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides a non-transitory computer-readable storage medium. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the above-mentioned detection and recognition integrated waveform design methods is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as portable disks, hard disks, random access memories (RAMs), read-only memories (ROMs), erasable programmable read-only memories (EPROMs or flash memories), portable compact disk read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, etc.

[0117] Based on the same technical concept, corresponding to any of the above-mentioned embodiments, the present application also provides a computer program product, which includes computer program instructions. In some embodiments, the computer program instructions can be executed by one or more processors of a computer to enable the computer and / or the processor to execute the described integrated waveform design method for detection and recognition. Corresponding to the execution subject corresponding to each step in each embodiment of the described integrated waveform design method for detection and recognition, the processor that executes the corresponding step may belong to the corresponding execution subject.

[0118] It should be understood that the present application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated. Those skilled in the art can make various changes, modifications, and additions, or change the order of the steps after understanding the spirit of the present application.

[0119] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0120] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps. In other words, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0121] Aspects of the present application have been described above 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 box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed via the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. This processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit. It is also understood that each box in the block diagram and / or the flowchart and the combination of the boxes in the block diagram and / or the flowchart can also be implemented by the dedicated hardware that performs the specified function or action, or can be implemented by the combination of dedicated hardware and computer instructions.

[0122] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A waveform design method for integrated detection and recognition, characterized in that: include: Divide the time length of the waveform into time units, time frames, and time slot structures; For each time slot, the time slot waveform frame structure is set to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization; the synchronization segment is configured to perform distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions; the data segment is configured to perform data exchange between network members, including Gaussian minimum shift keying (GMSK) modulation data segments and linear frequency modulation (LFM) modulation data segments; According to the communication system requirements, set the GMSK modulation signal parameters and LFM modulation signal parameters respectively; The pulse frequencies of the synchronization segment and the GMSK modulated data segment are pseudo-randomly hopped to obtain a pseudo-random frequency hopping pattern; According to the GMSK modulation signal parameters and the LFM modulation signal parameters, a GMSK modulation segment waveform and an LFM modulation segment waveform are generated to form an integrated waveform.

2. The method according to claim 1, characterized in that The GMSK modulated data segment is configured to pre-modulate and filter the baseband signal through a Gaussian filter, and then perform minimum shift keying (MSK) modulation on the output signal to obtain a GMSK modulated signal.

3. The method according to claim 2, characterized in that The GMSK modulated signal is: Among them, f c represents frequency hopping carrier; t represents time; Indicates the phase, a i represents the i-th code element symbol, T represents the symbol period, τ represents the pulse width, and π represents the circumference of a circle; g(t) represents the rectangular impulse response of the Gaussian filter, which is expressed as: in, B T represents the 3dB bandwidth of the Gaussian filter; Where x represents the integral variable, and its value range is (t, ∞).

4. The method according to claim 3, characterized in that The time domain expression corresponding to the LFM modulated data segment is: Among them, f c Indicates the carrier frequency; K r =B / τ represents the frequency modulation slope, B represents the signal bandwidth, τ represents the pulse width of the data segment; j represents an imaginary number; rect(t / τ) represents a rectangular signal, and its expression is:

5. The method according to claim 4, characterized in that The instantaneous frequency of the LFM modulated signal is: f0+K r t(-τ / 2≤t≤τ / 2); Wherein, f0 represents the center frequency, which is a preset value.

6. The method according to any one of claims 1 to 5, characterized in that The integrated waveform adopts a time division multiple access and frequency division multiple access hybrid access mode.

7. A waveform design device integrating detection and recognition, characterized in that: include: A division module is used to divide the time length of the waveform into time units, time frames, and time slot structures; A first setting module is configured to set, for each time slot, a time slot waveform frame structure to consist of a jitter segment, a synchronization segment, and a data segment, wherein the jitter segment has a fixed length after intra-network target synchronization, the synchronization segment is configured to perform distance and speed parameter estimation, spectrum detection, time synchronization, relative ranging and positioning, and intra-network identification functions, and the data segment is configured to perform data exchange between network members, including a Gaussian minimum shift keying (GMSK) modulated data segment and a linear frequency modulation (LFM) modulated data segment; The second setting module is used to set the GMSK modulation signal parameters and the LFM modulation signal parameters respectively according to the communication system requirement information; A frequency hopping module is used to perform pseudo-random hopping design on the pulse frequency of the synchronization segment and the GMSK modulated data segment to obtain a pseudo-random frequency hopping pattern; The generating module is used to generate a GMSK modulation segment waveform and an LFM modulation segment waveform according to the GMSK modulation signal parameters and the LFM modulation signal parameters to form an integrated waveform.

8. An electronic device, characterized in that: The device includes: a processor and a memory storing computer program instructions; when the processor calls the computer program instructions, it implements the detection, communication and recognition integrated waveform design method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer program instructions, and when the computer program instructions are called by the processor, the detection, communication and recognition integrated waveform design method according to any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the detection and recognition integrated waveform design method according to any one of claims 1 to 6.

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