Data transmission method and system based on VDES and VDES handheld terminal

Abstract

The invention relates to the technical field of satellite communication, in particular to a VDES-based data transmission method and system and a VDES handheld terminal. When the distance between the first VDES hand-held terminal and the second VDES hand-held terminal is smaller than or equal to the first preset threshold value, the first VDES hand-held terminal and the second VDES hand-held terminal split the target data packet and send the target data packet to the target information receiving terminal at the same time, and in the data sending process, the distance between the first VDES hand-held terminal and the second VDES hand-held terminal is smaller than or equal to the first preset threshold value. The signal emission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal is intelligently modulated, so that the influence of external electromagnetic interference on electromagnetic wave signals is greatly reduced, and the intelligent degree, the stability and the transmission efficiency of the data transmission process are improved to a great extent.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a VDES-based data transmission method and system, and a VDES handheld terminal. Background Art

[0002] VDES (VHF Data Exchange System) is an enhanced and upgraded version of the Automatic Identification System (AIS) for marine mobile services. VDES integrates three functions: AIS, Application-Specific Messages (ASM), and Broadband VHF Data Exchange (VDE). Its outstanding feature is that it can comprehensively enhance the data transmission capability of ship communications by introducing ASM and VDE on the basis of protecting the existing AIS functions. However, in the use of the existing VDES, there is still the problem that electromagnetic signals are easily interfered with, and the stability and efficiency of the data transmission process may still be poor. Therefore, how to continue to enhance the stability and efficiency of the data transmission process is an urgent problem to be solved in the existing technology.

[0003] Therefore, the prior art needs to be further developed. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a VDES-based data transmission method and system, and a VDES handheld terminal to solve the problems existing in the prior art.

[0005] To achieve the above technical objectives, according to a first aspect of the present invention, the present invention provides a data transmission method based on VDES, comprising: S100, setting a GPS sensor in each VDES handheld terminal, using the GPS sensor set in each VDES handheld terminal to obtain GPS location information of each VDES handheld terminal, and determining whether a distance between a first VDES handheld terminal and a second VDES handheld terminal is less than or equal to a first preset threshold; S200, if it exists, using the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal, and split the target data packet into a first data packet and a second data packet according to a preset rule, using the first VDES handheld terminal to transmit the first data packet to the target information receiving terminal at a preset frequency, and using the second VDES handheld terminal to transmit the second data packet to the target information receiving terminal at a preset frequency, recording a first timestamp of completion of reception of the first data packet, recording a second timestamp of completion of reception of the second data packet, calculating the time length between the first timestamp and the second timestamp, and adjusting the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal respectively according to the preset frequency interval and the preset rule, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold; S300 , continuing to send subsequent target data packets to the target information receiving terminal according to the signal transmission electromagnetic wave frequencies of the first VDES handheld terminal and the second VDES handheld terminal at this time.

[0006] Specifically, the method of using the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal includes: If the first VDES handheld terminal wants to send a target data packet, the target data packet is sent to the second VDES handheld terminal via the cloud server; If the second VDES handheld terminal wants to send a target data packet, the target data packet is sent to the first VDES handheld terminal via the cloud server.

[0007] Specifically, the method further includes: If the distance between the first VDES handheld terminal and the second VDES handheld terminal is not less than or equal to the first preset threshold, the target data packet to be sent by the cloud server is not shared between the first VDES handheld terminal and the second VDES handheld terminal, and subsequent steps are not performed.

[0008] Specifically, the adjusting the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal respectively according to the preset frequency interval and the preset rule includes: After the current first data packet and second data packet are both received by the target information receiving terminal, determine whether the first timestamp is earlier than the second timestamp, and based on the determination result, determine whether to reduce the frequency of the signal transmitted electromagnetic waves of the first VDES handheld terminal according to the preset frequency interval or to reduce the frequency of the signal transmitted electromagnetic waves of the second VDES handheld terminal according to the preset frequency interval.

[0009] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is earlier than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the second VDES handheld terminal is reduced according to a preset frequency interval.

[0010] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is later than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the first VDES handheld terminal is reduced according to a preset frequency interval.

[0011] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is equal to the second timestamp, the frequencies of electromagnetic waves transmitted by the signals of the first VDES handheld terminal and the second VDES handheld terminal are maintained unchanged.

[0012] Specifically, the step of splitting the target data packet into the first data packet and the second data packet according to a preset rule includes: The data contained in the target data packet is split from the middle into two parts of the same size, and then the target data packet is split into a first data packet and a second data packet.

[0013] According to a second aspect of the present invention, there is provided a VDES-based data transmission system, comprising: An acquisition module, used to acquire GPS location information of each VDES handheld terminal using a GPS sensor provided in each VDES handheld terminal; The control module is used to determine whether there is a distance between the first VDES handheld terminal and the second VDES handheld terminal that is less than or equal to a first preset threshold value. If so, the target data packet to be sent is shared between the first VDES handheld terminal and the second VDES handheld terminal by using a cloud server, and the target data packet is split into a first data packet and a second data packet according to a preset rule, the first VDES handheld terminal is used to transmit the first data packet to the target information receiving terminal according to a preset frequency, and the second VDES handheld terminal is used to transmit the second data packet to the target information receiving terminal according to a preset frequency, record a first timestamp when the first data packet is received, record a second timestamp when the second data packet is received, calculate the time length between the first timestamp and the second timestamp, and adjust the signal emission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal according to the preset frequency interval and the preset rule, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold value; and continue to send subsequent target data packets to the target information receiving terminal according to the signal emission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal at this time.

[0014] According to a third aspect of the present invention, there is provided a VDES handheld terminal, comprising: a memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the above-mentioned VDES-based data transmission method is implemented.

[0015] Beneficial effects: When the distance between the first VDES handheld terminal and the second VDES handheld terminal is less than or equal to a first preset threshold, the present invention splits a target data packet through the first VDES handheld terminal and the second VDES handheld terminal and sends the target data packet to the target information receiving terminal at the same time, and in the process of data transmission, intelligently modulates the signal transmission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal to greatly reduce the influence of external electromagnetic interference on the electromagnetic wave signal, thereby greatly improving the intelligence, stability and transmission efficiency of the data transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of a VDES-based data transmission method provided in a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the system composition of a VDES-based data transmission system provided in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0018] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] See also Figure 1 The present invention provides a data transmission method based on VDES, comprising: S100, setting a GPS sensor in each VDES handheld terminal, using the GPS sensor set in each VDES handheld terminal to obtain the GPS location information of each VDES handheld terminal, and determining whether the distance between the first VDES handheld terminal and the second VDES handheld terminal is less than or equal to a first preset threshold.

[0020] Specifically, the method further includes: If the distance between the first VDES handheld terminal and the second VDES handheld terminal is not less than or equal to the first preset threshold, the target data packet to be sent by the cloud server is not shared between the first VDES handheld terminal and the second VDES handheld terminal, and subsequent steps are not performed.

[0021] It should be noted that the step before step S100 includes: A first preset threshold, a second preset threshold, and a preset frequency interval are preset in the control module.

[0022] It can be understood that the first preset threshold, the second preset threshold, and the preset frequency interval can be specifically set according to the actual needs of the user of the present invention. The present invention does not limit the specific values ​​of the above parameters, as long as they are applicable to the VDES-based data transmission method proposed in the present invention.

[0023] Preferably, the present invention sets the first preset threshold to 10 nautical miles, the present invention sets the second preset threshold to 0.1 seconds, and the present invention sets the preset frequency interval to 1.5Mhz. The above parameters are set as obtained by the technicians of the present invention through a large number of tests, and can well implement the VDES-based data transmission method proposed by the present invention, further improving the usability of the present invention.

[0024] S200. If so, use the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal, split the target data packet into a first data packet and a second data packet according to a preset rule, use the first VDES handheld terminal to transmit the first data packet to the target information receiving terminal at a preset frequency, and use the second VDES handheld terminal to transmit the second data packet to the target information receiving terminal at a preset frequency, record the first timestamp of the completion of the reception of the first data packet, record the second timestamp of the completion of the reception of the second data packet, calculate the time length between the first timestamp and the second timestamp, and adjust the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal according to the preset frequency interval and preset rules, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold.

[0025] Specifically, the method of using the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal includes: If the first VDES handheld terminal wants to send a target data packet, the target data packet is sent to the second VDES handheld terminal via the cloud server; If the second VDES handheld terminal wants to send a target data packet, the target data packet is sent to the first VDES handheld terminal via the cloud server.

[0026] Specifically, the adjusting the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal respectively according to the preset frequency interval and the preset rule includes: After the current first data packet and second data packet are both received by the target information receiving terminal, determine whether the first timestamp is earlier than the second timestamp, and based on the determination result, determine whether to reduce the frequency of the signal transmitted electromagnetic waves of the first VDES handheld terminal according to the preset frequency interval or to reduce the frequency of the signal transmitted electromagnetic waves of the second VDES handheld terminal according to the preset frequency interval.

[0027] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is earlier than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the second VDES handheld terminal is reduced according to a preset frequency interval.

[0028] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is later than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the first VDES handheld terminal is reduced according to a preset frequency interval.

[0029] It is understandable that, since electromagnetic waves with lower frequencies have better penetrating power when penetrating matter, the present invention reduces the frequency of electromagnetic waves emitted by the signal of the first VDES handheld terminal according to a preset frequency interval, thereby enabling the signal of the first VDES handheld terminal to reach the target information receiving terminal faster. In the process of data transmission, the frequency of electromagnetic waves emitted by the signal of the first VDES handheld terminal and the second VDES handheld terminal is intelligently modulated to greatly reduce the impact of external electromagnetic interference on electromagnetic wave signals, thereby greatly improving the intelligence, stability and transmission efficiency of the data transmission process.

[0030] Specifically, the determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves transmitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves transmitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, include: If the first timestamp is equal to the second timestamp, the frequencies of electromagnetic waves transmitted by the signals of the first VDES handheld terminal and the second VDES handheld terminal are maintained unchanged.

[0031] Specifically, the step of splitting the target data packet into the first data packet and the second data packet according to a preset rule includes: The data contained in the target data packet is split from the middle into two parts of the same size, and then the target data packet is split into a first data packet and a second data packet.

[0032] It can be understood that after the target information receiving terminal receives the first data packet and the second data packet, the first data packet and the second data packet are reassembled into a target data packet to achieve data restoration.

[0033] S300 , continuing to send subsequent target data packets to the target information receiving terminal according to the signal transmission electromagnetic wave frequencies of the first VDES handheld terminal and the second VDES handheld terminal at this time.

[0034] It can be understood that, in the present invention, when the distance between the first VDES handheld terminal and the second VDES handheld terminal is less than or equal to the first preset threshold, the target data packet is split by the first VDES handheld terminal and the second VDES handheld terminal simultaneously sends the target data packet to the target information receiving terminal, and in the process of data transmission, the signal transmission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal is intelligently modulated to greatly reduce the influence of external electromagnetic interference on the electromagnetic wave signal, thereby greatly improving the intelligence, stability and transmission efficiency of the data transmission process.

[0035] See also Figure 2 The present invention provides another embodiment. This embodiment provides a VDES-based data transmission system. The VDES-based data transmission system includes: The acquisition module 100 is used to acquire the GPS location information of each VDES handheld terminal using a GPS sensor provided in each VDES handheld terminal; The control module 200 is used to determine whether there is a distance between the first VDES handheld terminal and the second VDES handheld terminal that is less than or equal to a first preset threshold value. If so, the target data packet to be sent is shared between the first VDES handheld terminal and the second VDES handheld terminal by using the cloud server, and the target data packet is split into a first data packet and a second data packet according to a preset rule, the first VDES handheld terminal is used to transmit the first data packet to the target information receiving terminal at a preset frequency, and the second VDES handheld terminal is used to transmit the second data packet to the target information receiving terminal at a preset frequency, record a first timestamp when the first data packet is received, record a second timestamp when the second data packet is received, calculate the time length between the first timestamp and the second timestamp, and adjust the signal emission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal according to the preset frequency interval and the preset rule, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold value; and continue to send subsequent target data packets to the target information receiving terminal according to the signal emission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal at this time.

[0036] It should be noted here that, in the present invention, when the distance between the first VDES handheld terminal and the second VDES handheld terminal is less than or equal to a first preset threshold, the target data packet is split by the first VDES handheld terminal and the second VDES handheld terminal and the target data packet is sent to the target information receiving terminal at the same time, and in the process of data transmission, the signal transmission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal is intelligently modulated to greatly reduce the influence of external electromagnetic interference on the electromagnetic wave signal, thereby greatly improving the intelligence, stability and transmission efficiency of the data transmission process.

[0037] In a preferred embodiment, the present application also provides a VDES handheld terminal, the electronic device comprising: A memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the VDES-based data transmission method is implemented. The computer device can be broadly a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices via a network. When the computer program is executed by the processor, the steps of the method of the present invention are performed.

[0038] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0039] It will be appreciated by a person skilled in the art that the method steps of the present invention may be performed by instructing related hardware such as a computer device or a processor through a computer program, and the computer program may be stored in a non-temporary computer-readable storage medium, which causes the steps of the present invention to be performed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database, or other media herein may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0040] It can be understood that, in the present invention, when the distance between the first VDES handheld terminal and the second VDES handheld terminal is less than or equal to the first preset threshold, the target data packet is split by the first VDES handheld terminal and the second VDES handheld terminal simultaneously sends the target data packet to the target information receiving terminal, and in the process of data transmission, the signal transmission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal is intelligently modulated to greatly reduce the influence of external electromagnetic interference on the electromagnetic wave signal, thereby greatly improving the intelligence, stability and transmission efficiency of the data transmission process.

[0041] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0042] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A data transmission method based on VDES, characterized in that: The method comprises: S100, setting a GPS sensor in each VDES handheld terminal, using the GPS sensor set in each VDES handheld terminal to obtain GPS location information of each VDES handheld terminal, and determining whether a distance between a first VDES handheld terminal and a second VDES handheld terminal is less than or equal to a first preset threshold; S200, if it exists, using the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal, and split the target data packet into a first data packet and a second data packet according to a preset rule, using the first VDES handheld terminal to transmit the first data packet to the target information receiving terminal at a preset frequency, and using the second VDES handheld terminal to transmit the second data packet to the target information receiving terminal at a preset frequency, recording a first timestamp of completion of reception of the first data packet, recording a second timestamp of completion of reception of the second data packet, calculating the time length between the first timestamp and the second timestamp, and adjusting the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal respectively according to the preset frequency interval and the preset rule, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold; S300 , continuing to send subsequent target data packets to the target information receiving terminal according to the signal transmission electromagnetic wave frequencies of the first VDES handheld terminal and the second VDES handheld terminal at this time.

2. The VDES-based data transmission method according to claim 1, characterized in that: The method of using the cloud server to share the target data packet to be sent between the first VDES handheld terminal and the second VDES handheld terminal includes: If the first VDES handheld terminal wants to send a target data packet, the target data packet is sent to the second VDES handheld terminal via the cloud server; If the second VDES handheld terminal wants to send a target data packet, the target data packet is sent to the first VDES handheld terminal via the cloud server.

3. The VDES-based data transmission method according to claim 1, characterized in that: The method further comprises: If the distance between the first VDES handheld terminal and the second VDES handheld terminal is not less than or equal to the first preset threshold, the target data packet to be sent by the cloud server is not shared between the first VDES handheld terminal and the second VDES handheld terminal, and subsequent steps are not performed.

4. The VDES-based data transmission method according to claim 1, characterized in that: The method of adjusting the signal transmission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal respectively according to the preset frequency interval and the preset rule includes: After the current first data packet and second data packet are both received by the target information receiving terminal, determine whether the first timestamp is earlier than the second timestamp, and based on the determination result, determine whether to reduce the frequency of the signal transmitted electromagnetic waves of the first VDES handheld terminal according to the preset frequency interval or to reduce the frequency of the signal transmitted electromagnetic waves of the second VDES handheld terminal according to the preset frequency interval.

5. The VDES-based data transmission method according to claim 4, characterized in that: The determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves emitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves emitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, includes: If the first timestamp is earlier than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the second VDES handheld terminal is reduced according to a preset frequency interval.

6. The VDES-based data transmission method according to claim 4, characterized in that: The determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves emitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves emitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, includes: If the first timestamp is later than the second timestamp, the frequency of the electromagnetic wave transmitted by the signal of the first VDES handheld terminal is reduced according to a preset frequency interval.

7. The VDES-based data transmission method according to claim 4, characterized in that: The determining whether the first timestamp is earlier than the second timestamp, and determining whether to reduce the frequency of electromagnetic waves emitted by the signal of the first VDES handheld terminal according to a preset frequency interval or to reduce the frequency of electromagnetic waves emitted by the signal of the second VDES handheld terminal according to a preset frequency interval according to the determination result, includes: If the first timestamp is equal to the second timestamp, the frequencies of electromagnetic waves transmitted by the first VDES handheld terminal and the second VDES handheld terminal are maintained unchanged.

8. The VDES-based data transmission method according to claim 1, characterized in that: The step of splitting the target data packet into a first data packet and a second data packet according to a preset rule includes: The data contained in the target data packet is split from the middle into two parts of the same size, and then the target data packet is split into a first data packet and a second data packet.

9. A data transmission system based on VDES, characterized in that: A GPS sensor is installed in each VDES handheld terminal, including: An acquisition module, used to acquire GPS location information of each VDES handheld terminal using a GPS sensor provided in each VDES handheld terminal; The control module is used to determine whether there is a distance between the first VDES handheld terminal and the second VDES handheld terminal that is less than or equal to a first preset threshold value. If so, the target data packet to be sent is shared between the first VDES handheld terminal and the second VDES handheld terminal by using a cloud server, and the target data packet is split into a first data packet and a second data packet according to a preset rule, the first VDES handheld terminal is used to transmit the first data packet to the target information receiving terminal according to a preset frequency, and the second VDES handheld terminal is used to transmit the second data packet to the target information receiving terminal according to a preset frequency, record a first timestamp when the first data packet is received, record a second timestamp when the second data packet is received, calculate the time length between the first timestamp and the second timestamp, and adjust the signal emission electromagnetic wave frequency of the first VDES handheld terminal or the second VDES handheld terminal according to the preset frequency interval and the preset rule, until the time length corresponding to the subsequent first data packet and the second data packet is less than the second preset threshold value; and continue to send subsequent target data packets to the target information receiving terminal according to the signal emission electromagnetic wave frequency of the first VDES handheld terminal and the second VDES handheld terminal at this time.

10. A VDES handheld terminal, characterized in that: include: Memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the VDES-based data transmission method according to any one of claims 1 to 8 is implemented.

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