Mechanical antenna orthogonal waveform design method and system based on curve frequency trajectory

Abstract

The invention discloses a mechanical antenna orthogonal waveform design method and system based on a curve frequency trajectory. The method comprises the following steps: determining frequency trajectories fA (t) and fB (t) of two orthogonal waveforms SA (t) and SB (t) to be designed; according to the frequency track fA (t), determining the rotating speed omega A (t) of the mechanical antenna corresponding to the waveform SA (t); according to the frequency track fB (t), determining the rotating speed omega B (t) of the mechanical antenna corresponding to the waveform SB (t); the rotating speed of the mechanical antenna is controlled according to the rotating speed omega A (t) of the mechanical antenna corresponding to the orthogonal waveform SA (t), and the waveform SA (t) is generated; the rotating speed of the mechanical antenna is controlled according to the rotating speed omega B (t) of the mechanical antenna corresponding to the waveform SB (t), the waveform SB (t) is generated, and the method and the system can design two orthogonal waveforms.

Description

Technical Field

[0001] The invention belongs to the technical field of wireless communication modulation, and relates to a method and system for designing orthogonal waveforms of mechanical antennas based on curve frequency trajectories. Background Art

[0002] Mechanical antenna is a new type of low-frequency transmitting antenna. Compared with conventional antennas, it has a small size and strong radiation capability, and has a wide range of application prospects in underwater and underground communication. The radiation mechanism of mechanical antenna is different from that of conventional antennas. It needs to generate electromagnetic waves through the mechanical movement of the radiator. Therefore, its information modulation is subject to the constraints of mechanical laws. It is difficult to achieve ideal results by directly applying conventional communication modulation technology.

[0003] Mechanical antenna research is still in the early stages of exploration. Currently, most researchers use conventional FSK technology to modulate information on mechanical antennas. However, in FSK modulation, the rotation speed of the radiator needs to change instantly, which violates the law of mechanical inertia, making it difficult to achieve ideal orthogonality. The literature Chirp-rate Shift Keying Modulation for Mechanical Antenna Based on Rotating Dipoles proposes a zigzag frequency trajectory modulation scheme, called chirp keying modulation, which has better orthogonal modulation performance than FSK modulation. However, the zigzag frequency trajectory modulation has great limitations and is not enough to meet the needs of future mechanical antenna communication applications. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method and system for designing orthogonal waveforms of a mechanical antenna based on a curve frequency trajectory. The method and system can design two orthogonal waveforms.

[0005] To achieve the above object, the present invention discloses a method for designing orthogonal waveforms of mechanical antennas based on a curve frequency trajectory, comprising:

[0006] Determine the two orthogonal waveforms S to be designed A (t) and S B (t) frequency trajectory f A (t) and f A (t);

[0007] According to the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t);

[0008] According to the frequency trajectory f B(t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t);

[0009] According to the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t).

[0010] The further improvement of the mechanical antenna orthogonal waveform design method based on the curve frequency trajectory of the present invention is:

[0011] Furthermore, waveform S A (t) frequency trajectory f A (t) satisfies the following boundary conditions:

[0012]

[0013] Among them, f0 represents the communication carrier frequency, T represents the time period, t represents the time, and the frequency trajectory f A (t) is continuous within a period and has an arbitrary shape.

[0014] Furthermore, waveform S B (t) frequency trajectory f B (t) is expressed as:

[0015]

[0016] Wherein, D is a preset value, T represents a time period, and t represents time.

[0017] Furthermore, waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) is:

[0018]

[0019] Wherein, N is an integer.

[0020] Furthermore, waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) is:

[0021]

[0022] Wherein, N is an integer.

[0023] Furthermore, the orthogonal waveform S A (t) and S B (t) is expressed in the time domain as:

[0024]

[0025] Wherein, T represents the time period and t represents the time.

[0026] The present invention discloses a mechanical antenna orthogonal waveform design system based on a curve frequency trajectory, comprising:

[0027] The first determination module is used to determine the two orthogonal waveforms S to be designed. A (t) and S B (t) frequency trajectory f A (t) and f B (t);

[0028] The second determination module is used to determine the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t);

[0029] The third determination module is used to determine the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t);

[0030] A control module is used to control the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t).

[0031] The further improvement of the mechanical antenna orthogonal waveform design system based on the curve frequency trajectory of the present invention is:

[0032] Furthermore, waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) is:

[0033]

[0034] Wherein, N is an integer.

[0035] Furthermore, waveform S B(t) corresponds to the rotation speed ω of the mechanical antenna B (t) is:

[0036]

[0037] Wherein, N is an integer.

[0038] Furthermore, the orthogonal waveform S A (t) and S B (t) is expressed in the time domain as:

[0039]

[0040] Wherein, T represents the time period and t represents the time.

[0041] The present invention has the following beneficial effects:

[0042] The mechanical antenna orthogonal waveform design method and system based on the curve frequency trajectory of the present invention is specifically operated based on the two orthogonal waveforms S to be designed. A (t) and S B (t) frequency trajectory f A (t) and f B (t), using a mechanical antenna to generate two orthogonal waveforms S a (t) and S B (t), compared with the zigzag frequency trajectory modulation scheme, it is more in line with the mechanical characteristics of the mechanical antenna drive. At the same time, it should be noted that formula (1) only limits the waveform S A (t) frequency trajectory f A The boundary value of (t) has various forms of curve frequency trajectory, which can meet the diverse application needs in the future.

[0043] Furthermore, according to equations (2) and (3), the frequency trajectory f is constructed B (t), due to the multiple solutions of parameter D, the construction of orthogonal waveforms is more diversified. The diversified waveforms have good adaptability to various application environments in the future and help to improve the communication and detection capabilities of mechanical antennas in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0045] Figure 1 A schematic diagram of the mechanical antenna structure and the principle of generating electromagnetic waves according to the present invention;

[0046] Figure 2 is a flow chart of the method of the present invention;

[0047] Figure 3 A schematic diagram of the modulation implementation process of two orthogonal waveforms in Example 2;

[0048] Figure 4 Schematic diagram of the implementation process of two orthogonal waveform modulation in Example 3. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0051] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0052] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0053] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0054] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0057] Embodiment 1

[0058] refer to Figure 1 The basic structure of the mechanical antenna includes a host computer, a driving unit and a radiator, wherein the host computer is connected to the driving unit, and the driving unit is connected to the radiator. During operation, the sender sets the operating program through the host computer to control the real-time driving speed of the driving unit. The driving unit is rigidly connected to the radiator, and can drive the radiator to rotate at a specified rotation speed ω(t). The radiator will generate electromagnetic waves during the rotation process, and the frequency f of the electromagnetic waves is an integer multiple of the rotation speed of the radiator.

[0059] Specifically, the radiation unit is a permanent magnet or a charged electret; and the driving unit is a servo motor.

[0060] The method for designing orthogonal waveforms of mechanical antennas based on curved frequency trajectories of the present invention comprises the following steps:

[0061] The goal of the orthogonal waveform design in this embodiment is to design two orthogonal waveforms, denoted as S A (t) and S B (t), waveform S A (t) and waveform S B The time period of (t) is T. During the time period, waveform S A (t) and waveform S B The correlation coefficient of (t) is 0, and the specific design process is:

[0062] 1) Select a curve as waveform S A (t) frequency trajectory f A (t), f A (t) is The function of time t in the interval, when the communication carrier frequency is f0, f A The function value of (t) at the start and end of a cycle is the carrier frequency f0, that is,

[0063]

[0064] The frequency trace f of waveform A A (t) is continuous within a period and has an arbitrary shape except for the start and end values, where the frequency f A (t) and f B The unit of (t) is Hertz (Hz), the rotation speed ω A (t) and ω B The unit of (t) is revolutions per second (r / s).

[0065] 2) Frequency trajectory f based on waveform A A (t), determine the frequency trajectory f of waveform B B (t), in the first half of the time period Inside, f B (t) is expressed as:

[0066]

[0067] In the second half of the cycle The frequency trace f of waveform B is B (t)Satisfy:

[0068]

[0069] The value of D is:

[0070]

[0071] Wherein, C(·) and S(·) are Fresnel integral functions. Solving equation (4), the values ​​of D include but are not limited to ±1.41, ±3.51, ±5.49, and ±7.50.

[0072] 3) Based on the frequency trajectory f A (t) and frequency trajectory f B (t), using a mechanical antenna to generate the orthogonal waveform S A (t) and S B The method of (t) is:

[0073] Assume that the rotation speed of the radiator 3 is ω, and the frequency of the radiated electromagnetic wave is f, satisfying:

[0074]

[0075] Wherein, N is a positive integer. The specific value of N can be obtained according to the hardware parameters of the mechanical antenna itself. Usually, N is 1. According to the above relationship, the specified waveform signal can be generated by setting the speed trajectory. When the mechanical antenna generates the waveform S A (t), let the mechanical antenna rotate at the speed ω A (t) performs rotational motion, where ω A (t) is:

[0076]

[0077] Among them, f A (t) is the waveform S A The frequency curve of (t) is given by formula (1). When the mechanical antenna generates the waveform S B (t), let the mechanical antenna rotate at the speed ω B (t) performs rotational motion, where ω B (t) is:

[0078]

[0079] Among them, f B (t) is the waveform S B The frequency curve of (t) is defined by equations (2) and (3).

[0080] 4) A pair of orthogonal waveforms S generated by the mechanical antenna A (t) and S B (t) is expressed in the time domain as:

[0081]

[0082]

[0083] It can be verified that the orthogonal waveform SA (t) and S B The correlation coefficient of (t) is close to 0.

[0084] Embodiment 2

[0085] In this embodiment, the communication carrier frequency f0=20Hz; the modulation period T=1s; the selected parameter D=1.41; the ratio of the rotation speed of the radiation unit to the electromagnetic wave operating frequency N=1;

[0086] According to the definition of formula (1), the waveform S is constructed A (t) frequency trajectory f A (t) is:

[0087]

[0088] Using equations (3) and (4) to generate waveform S b (t) frequency trajectory f B (t), the frequency trajectory of the two orthogonal waveforms f A (t) and f B (t) curve is as follows Figure 3 As shown in the first row of , according to equations (6) and (7), the rotation speed curves of the mechanical antenna generating two orthogonal waveforms are obtained as follows: Figure 3 According to equations (8) and (9), we get the waveform S A (t) and waveform S B The time domain waveform of (t) is as follows Figure 3 As shown in the third row, the waveform S is obtained by numerical calculation. A (t) and waveform S B (t) The correlation coefficient of the two waveforms is -0.0274, which is close to 0 and has good orthogonality.

[0089] Embodiment 3

[0090] The following parameters are used in this embodiment: communication carrier frequency f0=20 Hz; modulation period T=1 s; selected parameter D=-1.41; ratio of the rotation speed of the radiation unit to the electromagnetic wave operating frequency N=2.

[0091] According to formula (1), construct waveform S A (t) frequency trajectory f A (t) is:

[0092]

[0093] Then use equations (3) and (4) to generate waveform S A (t) frequency trajectory f B (t), the frequency trajectory of the two orthogonal waveforms f A (t) and f B(t) curve is as follows Figure 4 The rotation speed curves of the mechanical antenna that produces two orthogonal waveforms are shown in the first row. Figure 4 According to equations (8) and (9), the waveform S A (t) and waveform S B The time domain waveform of (t) is as follows Figure 4 As shown in the third row of the figure. The waveform S is obtained by numerical calculation. A (t) and waveform S B The correlation coefficient of (t) is -0.0245, which is close to 0 and has good orthogonality.

[0094] Embodiment 4

[0095] The mechanical antenna orthogonal waveform design system based on curve frequency trajectory of the present invention comprises:

[0096] The first determination module is used to determine the two orthogonal waveforms S to be designed. A (t) and S B (t) frequency trajectory f A (t) and f B (t);

[0097] The second determination module is used to determine the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t);

[0098] The third determination module is used to determine the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t);

[0099] A control module is used to control the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t).

[0100] As an embodiment of the present invention, waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) is:

[0101]

[0102] Wherein, N is an integer.

[0103] As an embodiment of the present invention, waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) is:

[0104]

[0105] Wherein, N is an integer.

[0106] As an embodiment of the present invention, the orthogonal waveform S A (t) and S B (t) is expressed in the time domain as:

[0107]

[0108] Wherein, T represents the time period and t represents the time.

[0109] The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0110] Embodiment 5

[0111] A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the mechanical antenna orthogonal waveform design method based on a curve frequency trajectory are implemented, for example, including: determining two orthogonal waveforms S to be designed A (t) and S B (t) frequency trajectory f A (t) and f B (t); According to the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t); According to the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t); According to the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antennaB (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t). The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus, and the internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard structure bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0112] Embodiment 6

[0113] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the mechanical antenna orthogonal waveform design method based on a curve frequency trajectory are implemented, for example, including: determining two orthogonal waveforms S to be designed A (t) and S B (t) frequency trajectory f A (t) and f B (t); According to the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t); According to the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t); According to the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t). Specifically, the computer-readable storage medium includes, but is not limited to, for example, a volatile memory and / or a non-volatile memory. The volatile memory may include a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include a read-only memory (ROM), a hard disk, a flash memory, an optical disk, a magnetic disk, etc.

[0114] 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.

[0115] 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.

[0116] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0117] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0118] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0119] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0120] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for designing orthogonal waveforms of mechanical antennas based on curve frequency trajectories, characterized in that: include: Determine the two orthogonal waveforms S to be designed A (t) and S B (t) frequency trajectory f A (t) and f B (t); According to the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t); According to the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t); According to the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t).

2. The method for designing mechanical antenna orthogonal waveforms based on curve frequency trajectory according to claim 1, characterized in that: Waveform S A (t) frequency trajectory f A (t) satisfies the following boundary conditions: Among them, f0 represents the communication carrier frequency, T represents the time period, t represents the time, and the frequency trajectory f A (t) is continuous within a period and has an arbitrary shape.

3. The method for designing mechanical antenna orthogonal waveforms based on curve frequency trajectory according to claim 1, characterized in that: Waveform S B (t) frequency trajectory f B (t) is expressed as: Wherein, D is a preset value, T represents a time period, and t represents time.

4. The method for designing mechanical antenna orthogonal waveforms based on curve frequency trajectory according to claim 1, characterized in that: Waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) is: Wherein, N is an integer.

5. The method for designing mechanical antenna orthogonal waveforms based on curve frequency trajectory according to claim 1, characterized in that: Waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) is: Wherein, N is an integer.

6. The method for designing mechanical antenna orthogonal waveforms based on curve frequency trajectory according to claim 1, characterized in that: Orthogonal waveform S A (t) and S B (t) is expressed in the time domain as: Wherein, T represents the time period and t represents the time.

7. A mechanical antenna orthogonal waveform design system based on a curve frequency trajectory, characterized in that: include: The first determination module is used to determine the two orthogonal waveforms S to be designed. A (t) and S B (t) frequency trajectory f A (t) and f B (t); The second determination module is used to determine the frequency trajectory f A (t) Determine the waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t); The third determination module is used to determine the frequency trajectory f B (t) Determine the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t); A control module is used to control the orthogonal waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) Control the rotation speed of the mechanical antenna to generate waveform S A (t); According to the waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) Control the rotation speed of the mechanical antenna to generate waveform S B (t).

8. The mechanical antenna orthogonal waveform design system based on curve frequency trajectory according to claim 7, characterized in that: Waveform S A (t) corresponds to the rotation speed ω of the mechanical antenna A (t) is: Wherein, N is an integer.

9. The mechanical antenna orthogonal waveform design system based on curve frequency trajectory according to claim 7, characterized in that: Waveform S B (t) corresponds to the rotation speed ω of the mechanical antenna B (t) is: Wherein, N is an integer.

10. The mechanical antenna orthogonal waveform design system based on curve frequency trajectory according to claim 7, characterized in that: Orthogonal waveform S A (t) and S B (t) is expressed in the time domain as: Wherein, T represents the time period and t represents the time.

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