Quantum-secure beidou short message based unmanned aerial vehicle control system and method

Abstract

This invention proposes a quantum-secure UAV control system and method based on BeiDou short message service. It utilizes an online quantum key distribution process to share quantum keys between the UAV and its ground control station, offering higher security compared to distributing symmetric keys using asymmetric keys. Furthermore, encrypting the content of the short message using the quantum key achieves theoretically absolute security. Simultaneously, this invention allows for high-frequency use of multiple BeiDou terminals to send commands to the UAV, enabling flight control via BeiDou short messages and timely adjustments to the UAV's heading and attitude.

Description

Technical Field

[0001] This invention relates to the field of quantum secure communication, specifically to a quantum-secure unmanned aerial vehicle (UAV) control system and method based on BeiDou short message service. Background Technology

[0002] my country's independently developed BeiDou navigation technology is being used more and more widely in various industries. BeiDou short message communication refers to the two-way information transmission between BeiDou ground terminals and BeiDou satellites / ground monitoring stations via satellite signals. Communication uses short messages (similar to SMS messages) as the basic unit of transmission and is a feature inherent to my country's BeiDou satellite navigation system. Other countries' Global Navigation Satellite Systems (GNSS) do not possess this communication function. Through BeiDou short message communication, information can be disseminated to the outside world in areas without ordinary mobile communication signals and networks, such as oceans, deserts, and wilderness.

[0003] In the energy and power industry, the power grid transmission and transformation sector faces challenges such as inaccessibility to remote mountainous areas, lack of network coverage, heavy workload for operation and maintenance, and high operational risks. In the offshore wind power sector, my country is one of the world's richest countries in offshore wind energy resources. However, offshore wind farms are increasingly located further from shore, creating complex offshore operating environments with no communication network coverage. There is an urgent need for a large number of intelligent inspection devices based on remote wireless control to improve work efficiency and reduce operating costs. Currently, drone control based on wireless network communication suffers from high network dependence and short control distances. Furthermore, the power industry has high requirements for the confidentiality of communication data, and the security measures used for wireless transmission pose security risks.

[0004] When a drone is performing a mission, if it goes beyond the remote control range and is in a location without ordinary mobile communication signals, it cannot communicate with the ground command and control system, and commands and parameters cannot be effectively transmitted. If satellite communication, such as maritime satellite communication, is used, its high cost limits its high-frequency use, hindering normal operations. After equipping the drone with a BeiDou SIM card, when it is outside the remote control range and in a location without mobile communication signals, it can exchange information and control the system via BeiDou short messages. However, because BeiDou short messages are transmitted in plaintext, physical security is weak, requiring high-level encryption protection for communication. Furthermore, remote control and data transmission between the drone and the remote control system are real-time. Since the short message transmission frequency of privately-owned BeiDou SIM cards is only 1 message / min, which is low compared to the information exchange of flight commands and flight attitude, the information transmission frequency needs to be increased.

[0005] Currently, key distribution for mobile terminals largely relies on asymmetric key (public-private key pair) systems. However, with advancements in computer technology, asymmetric algorithms, based on the computational complexity of traditional mathematics, are susceptible to being cracked. If symmetric keys are used, long-distance transmission of the symmetric key also requires distribution using asymmetric keys, which again presents the possibility of being compromised. Furthermore, if the symmetric key is pre-filled, both ends need to be pre-filled at close range, limiting its application scenarios.

[0006] Quantum keys possess the properties of being unclonable, uncertain, and measurement-collapsed, enabling secure key distribution that cannot be eavesdropped on. Compared to other keys, quantum keys offer higher randomness and security; using quantum keys for key distribution on mobile terminals would significantly enhance information security. However, using quantum keys or similar symmetric keys presents the challenge of implementing key distribution on mobile terminals. Mobile terminals operate in areas without mobile communication signals or networks, unable to communicate with the outside world in real time like networked devices, and their short message communication capacity is too small to support real-time key distribution. Furthermore, the size and battery capacity of mobile terminals themselves make it impossible to carry key distribution equipment. Summary of the Invention

[0007] To address the issues of low transmission efficiency of BeiDou short message services and low security when using asymmetric key algorithms to encrypt short messages in existing technologies, this invention proposes a quantum-secure UAV control system and method based on BeiDou short messages. It utilizes an online quantum key distribution process to share quantum keys between the UAV and its ground control station, offering higher security compared to distributing symmetric keys using asymmetric keys. Furthermore, encrypting the content of the short message using quantum keys theoretically achieves absolute security. Simultaneously, this invention allows for high-frequency use of multiple BeiDou terminals to send commands to the UAV, enabling flight control via BeiDou short messages and timely adjustments to the UAV's heading and attitude.

[0008] Specifically, the first aspect of the present invention relates to a quantum-secure unmanned aerial vehicle (UAV) control system based on BeiDou short message service, which includes a UAV, a UAV ground control station, and a quantum key injection station.

[0009] The quantum key injection station is configured to generate a shared quantum key with the UAV ground control station through the quantum key distribution process, and to inject the shared quantum key into the UAV.

[0010] The UAV ground control station is configured to communicate with the UAV in a short message manner using a shared quantum key in an encrypted manner, and includes a first Beidou communication module A;

[0011] The drone is configured to communicate with the drone ground control station in an encrypted manner using a shared quantum key, and includes a second Beidou communication module B.

[0012] The first Beidou communication module A includes a multi-SIM card unit and multiple Beidou SIM cards;

[0013] The multiple BeiDou cards include a first BeiDou card and N second BeiDou cards, where N is a positive integer. The first BeiDou card is configured to receive short messages, and the N second BeiDou cards are configured to send short messages sequentially at a preset time interval δT.

[0014] Preferably, the preset time interval δT = 1 / (f0*N), where f0 is the transmission frequency of the second Beidou card; and / or, N is not greater than 15.

[0015] Furthermore, the second Beidou communication module B includes a single-card receiver and a third Beidou card, wherein the third Beidou card is configured to receive and send short messages.

[0016] Furthermore, the UAV ground control station also includes a command system, a first encryption / decryption module A, and a first quantum key distribution device;

[0017] The drone also includes a flight control subsystem and a second encryption / decryption module B;

[0018] The quantum key filling station includes a second quantum key distribution device and a quantum key filling machine;

[0019] The first and second quantum key distribution devices are configured to generate shared quantum keys using a quantum key distribution process.

[0020] The quantum key generator is configured to charge shared quantum keys into the drone;

[0021] The command system is configured to generate flight commands;

[0022] The flight control subsystem is configured to generate flight parameters;

[0023] The first encryption / decryption module A is configured to encrypt flight commands using a shared quantum key to generate a first ciphertext, and to decrypt the second ciphertext to obtain flight parameters;

[0024] The second encryption / decryption module B is configured to encrypt flight parameters using a shared quantum key to generate a second ciphertext, and to decrypt the first ciphertext to obtain flight commands;

[0025] The first Beidou communication module A is configured to generate and send a first short message based on a first ciphertext, and to receive a second short message;

[0026] The second Beidou communication module B is configured to generate and send a second short message based on the second ciphertext, and to receive a first short message.

[0027] Furthermore, the drone also includes a navigation subsystem and a key storage medium; the navigation subsystem includes a BeiDou positioning module and an inertial navigation module; and the key storage medium is used to store shared quantum keys; and / or,

[0028] The first short message further includes at least one of the following: a sequence number of a flight command, a key sequence number of a shared quantum key for the first ciphertext, and a sequence number of a first quantum key distribution device. The second short message further includes at least one of the following: a sequence number of flight parameters, a key sequence number of a shared quantum key for the second ciphertext, and a sequence number of a second quantum key distribution device.

[0029] The second aspect of the present invention relates to a quantum-secure unmanned aerial vehicle (UAV) control method based on BeiDou short message service, which includes a key distribution step and a short message encrypted transmission step.

[0030] The key distribution step is used to distribute a shared quantum key between the UAV and the UAV ground control station;

[0031] The short message encryption transmission step includes a flight command transmission sub-step and a flight parameter transmission sub-step;

[0032] In the flight command transmission sub-step, the UAV ground control station uses a shared quantum key to encrypt the flight command to generate the first ciphertext, generates and sends the first short message to the UAV through the BeiDou satellite link based on the first ciphertext, and the UAV obtains the first ciphertext from the first short message and decrypts the first ciphertext using the shared quantum key to obtain the plaintext of the flight command.

[0033] In the flight parameter transmission sub-step, the UAV uses a shared quantum key to encrypt the flight parameters to generate a second ciphertext. Based on the second ciphertext, a second short message is generated and sent to the UAV ground control station via the BeiDou satellite link. The UAV ground control station obtains the second ciphertext from the second short message and uses the shared quantum key to decrypt the second ciphertext to obtain the plaintext of the flight parameters.

[0034] In the flight command transmission sub-step, the UAV ground control station uses N second Beidou cards to send short messages sequentially at a preset time interval δT, where N is a positive integer.

[0035] Furthermore, in the key distribution step, a shared quantum key is first distributed between the UAV ground control station and the quantum key injection station through a quantum key distribution process, and then the shared quantum key is injected into the UAV by the quantum key injection station.

[0036] Preferably, the preset time interval δT = 1 / (f0*N), where f0 is the transmission frequency of the second Beidou card; and / or, N is not greater than 15.

[0037] Furthermore, the first short message also includes at least one of the following: a flight command sequence number, a key sequence number for the shared quantum key used for the first ciphertext, and a sequence number of the first quantum key distribution device; the second short message also includes at least one of the following: a flight parameter sequence number, a key sequence number for the shared quantum key used for the second ciphertext, and a sequence number of the second quantum key distribution device; and,

[0038] In the flight command transmission sub-step, the UAV searches for the shared quantum key used to decrypt the first ciphertext based on the key sequence number of the shared quantum key used for the first ciphertext and the sequence number of the first quantum key distribution device.

[0039] In the flight parameter transmission sub-step, the UAV ground control station searches for the shared quantum key used to decrypt the second ciphertext based on the key sequence number of the shared quantum key used for the second ciphertext and the sequence number of the second quantum key distribution device.

[0040] Preferably, the UAV control method of the present invention can be implemented using the above-described UAV control system. Attached Figure Description

[0041] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 The present invention schematically illustrates a quantum-safe, BeiDou short message-based unmanned aerial vehicle (UAV) control system and method. Detailed Implementation

[0044] In the following description, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of example in order to fully convey the spirit of the invention to those skilled in the art. Therefore, the invention is not limited to the embodiments disclosed herein.

[0045] Figure 1 The present invention schematically illustrates a quantum-safe, BeiDou short message-based unmanned aerial vehicle (UAV) control system and method.

[0046] The unmanned aerial vehicle (UAV) control system of the present invention may include a UAV, a UAV ground control station, and a quantum key injection station.

[0047] The UAV ground control station can communicate with the UAV via BeiDou short message through a satellite link, send flight commands to the UAV and obtain the UAV's flight parameters, thereby enabling remote command, control and monitoring of the UAV.

[0048] Drones can collect data such as their position, speed, and flight attitude, and achieve controllable flight according to flight commands.

[0049] The quantum key injection station can generate shared quantum keys with the UAV ground control station through the quantum key distribution process, and inject shared quantum keys into the UAV.

[0050] exist Figure 1 In the example, the UAV ground control station may include a command system, a first encryption / decryption module A, a first quantum key distribution device, and a first BeiDou communication module A.

[0051] The drone may include a navigation subsystem, a flight control subsystem, a second encryption / decryption module B, a second BeiDou communication module B, and a key storage medium.

[0052] A quantum key injection terminal may include a second quantum key distribution device and a quantum key injector.

[0053] exist Figure 1 In the example, the UAV ground control station and the quantum key injection terminal can generate a shared quantum key through a quantum key distribution process using first and second quantum key distribution devices. The UAV can obtain the shared quantum key from the quantum key injection terminal via the quantum key injection machine, thereby realizing the distribution of the shared quantum key between the UAV and the UAV ground control station.

[0054] In drones, the shared quantum key obtained by the quantum key injector can be stored in the key storage medium.

[0055] In this example, the drone can also record the identifier of the quantum key distribution device associated with the stored shared quantum key, such as the identifier of the second quantum key distribution device, QDevice2.

[0056] Accordingly, in the UAV ground control station, the shared quantum key generated by the first quantum key distribution device will be provided to the first encryption / decryption module A, and the identifier of the quantum key distribution device associated with the shared quantum key will also be recorded, such as the identifier QDevice1 of the first quantum key distribution device.

[0057] In the UAV ground control station, the command system can generate flight commands for the UAV.

[0058] In this invention, the flight command is sent to the first encryption / decryption module A, which uses a shared quantum key about the UAV to encrypt the flight command to generate a first ciphertext, and then sends the first ciphertext to the first Beidou communication module A.

[0059] exist Figure 1 In the example, the key sequence number QNumA used to form the first ciphertext can also be sent to the first Beidou communication module A at the same time.

[0060] The first Beidou communication module A can perform short message format conversion and generate a first short message based on the first ciphertext, so that it can be sent to the UAV via the Beidou satellite link.

[0061] In a preferred example, in addition to the first ciphertext, the first short message may also include the sequence number of the flight command, the key sequence number (e.g., QNumA) of the shared quantum key for the first ciphertext, and the identifier (e.g., QDevice1) of the quantum key distribution device for the shared quantum key.

[0062] In this invention, unlike the prior art, the first Beidou communication module A can be equipped with a Beidou multi-card machine and multiple Beidou cards.

[0063] Specifically, the first BeiDou communication module A may include one first BeiDou card and N second BeiDou cards, where N is a positive integer and preferably no greater than 15.

[0064] In the first BeiDou communication module A, the first BeiDou card is used to receive short messages, and the second BeiDou card is used to send short messages. Therefore, when the second BeiDou card has a transmission frequency of f0 (e.g., 1 time / minute), N second BeiDou cards can sequentially send short messages at a preset time interval δT=1 / (f0*N), thereby allowing the UAV ground control station to send high-frequency commands to the UAV, enabling the UAV to make timely adjustments to its heading and attitude.

[0065] In the drone, the second Beidou communication module B receives the first short message via the Beidou satellite link and sends it to the second encryption / decryption module B.

[0066] The second encryption / decryption module B obtains the key sequence number (e.g., QNumA) and the identifier of the quantum key distribution device (e.g., QDevice1) from the first short message. Based on this, it selects the same shared quantum key used by the UAV ground control station from the key storage medium, uses the shared quantum key to decrypt the first ciphertext to obtain the plaintext of the flight command, and sends the flight command to the flight control subsystem to control the flight status of the UAV.

[0067] like Figure 1 As shown, the navigation subsystem of an unmanned aerial vehicle (UAV) may include a BeiDou positioning module, an inertial navigation module, and a vision-assisted module to acquire flight status information of the UAV (such as positioning information and attitude information). For example, the BeiDou positioning module can acquire flight status information such as the UAV's position, speed, and heading, while the inertial navigation module can acquire flight status information such as attitude.

[0068] The flight control subsystem needs to collect the UAV's flight status information to compare it with flight commands to determine adjustment strategies and report it to the UAV ground control station to maintain the UAV in a controllable state. Therefore, the flight control subsystem can obtain flight status information from the navigation subsystem, perform relevant data processing to generate flight parameters, and send them to the second encryption / decryption module B.

[0069] The second encryption / decryption module B obtains the shared quantum key about the UAV ground control station from the key storage medium, uses it to encrypt the flight parameters to generate a second ciphertext, and sends the second ciphertext to the second Beidou communication module B.

[0070] The second Beidou communication module B can perform short message format conversion and generate a second short message based on the second ciphertext, so that it can be sent to the UAV ground control station via the Beidou satellite link.

[0071] In a preferred example, in addition to the second ciphertext, the second short message may also include the sequence number of the flight parameters, the key sequence number (e.g., QNumB) of the shared quantum key for the second ciphertext, and the identifier (e.g., QDevice2) of the quantum key distribution device for the shared quantum key.

[0072] exist Figure 1 In the example, the second Beidou communication module B can be equipped with a single-card receiver and a third Beidou card, wherein the third Beidou card is used to receive and send short messages.

[0073] In the UAV ground control station, the first Beidou communication module A receives the second short message via the Beidou satellite link and sends it to the first encryption / decryption module A.

[0074] The first encryption / decryption module A obtains the key sequence number (e.g., QNumB) and the identifier of the quantum key distribution device (e.g., QDevice2) from the second short message. Based on this, it selects the same shared quantum key used by the UAV, uses the shared quantum key to decrypt the second ciphertext to obtain the plaintext of the flight parameters, and sends the flight parameters to the command system for purposes such as comparing the execution status of flight commands and issuing the next round of flight commands.

[0075] Therefore, in the quantum-secure UAV control system based on BeiDou short messages proposed in this invention, the online quantum key distribution process enables the distribution of shared quantum keys between the UAV and its ground control station, which offers higher security compared to distributing symmetric keys using asymmetric keys. Furthermore, encrypting the content of the short messages using quantum keys provides higher confidentiality than other keys, achieving theoretically absolute security. In addition, compared to existing technologies, this system allows for high-frequency use of multiple BeiDou terminals to send commands to the UAV, enabling flight control via BeiDou short messages and timely adjustments to the UAV's heading and attitude.

[0076] Meanwhile, this invention also discloses a quantum-secure UAV control method based on BeiDou short messages, which is particularly suitable for implementation using the aforementioned UAV control system.

[0077] The drone control method of the present invention may include a key distribution step and a short message encrypted transmission step.

[0078] The key distribution step is used to distribute shared quantum keys between the drone and the drone ground control station.

[0079] For example, for Figure 1 For example, in the key distribution step, a shared quantum key can first be distributed between the UAV ground control station and the quantum key injection station through a quantum key distribution process, and then the quantum key injection station injects the shared quantum key into the UAV.

[0080] The short message encrypted transmission step may include a flight command transmission sub-step and a flight parameter transmission sub-step, which are used to transmit flight commands and flight parameters between the UAV and the UAV ground control station in an encrypted manner using a shared quantum key via short message communication.

[0081] In the flight command transmission sub-step, the UAV ground control station can use a shared quantum key to encrypt the flight command to generate a first ciphertext, generate and send a first short message based on the first ciphertext, and the UAV can use the shared quantum key to decrypt the first ciphertext to obtain the plaintext of the flight command.

[0082] For example, for Figure 1 For example, the command system sends flight commands to the first encryption / decryption module A. The first encryption / decryption module A uses a shared quantum key about the UAV to encrypt the flight commands, generating a first ciphertext, and then sends the first ciphertext to the first BeiDou communication module A. Simultaneously, the key sequence number QNumA of the shared quantum key used to form the first ciphertext can also be sent to the first BeiDou communication module A.

[0083] The first Beidou communication module A generates a first short message based on the first ciphertext. In addition to the first ciphertext, the first short message may also include the sequence number of the flight command, the key sequence number of the shared quantum key used for the first ciphertext (e.g., QNumA), and the identifier of the quantum key distribution device used for sharing the quantum key (e.g., QDevice1). Furthermore, the first Beidou communication module A can enable N second Beidou cards to sequentially send the first short message at a preset time interval δT=1 / (f0*N), thereby allowing the UAV ground control station to send commands to the UAV at a high frequency, enabling the UAV to make timely heading and attitude adjustments.

[0084] The second Beidou communication module B receives the first short message via the Beidou satellite link and sends it to the second encryption / decryption module B.

[0085] The second encryption / decryption module B obtains the key sequence number (e.g., QNumA) and the identifier of the quantum key distribution device (e.g., QDevice1) from the first short message. Based on this, it selects the same shared quantum key used by the UAV ground control station from the key storage medium, uses the shared quantum key to decrypt the first ciphertext to obtain the plaintext of the flight command, and sends the flight command to the flight control subsystem to control the flight status of the UAV.

[0086] In the flight parameter transmission sub-step, the UAV can use a shared quantum key to encrypt the flight parameters to generate a second ciphertext, generate and send a second short message based on the second ciphertext, and the UAV ground control station can use the shared quantum key to decrypt the second ciphertext to obtain the plaintext of the flight parameters.

[0087] For example, for Figure 1 For example, the flight control subsystem can obtain flight status information from the navigation subsystem, perform relevant data processing to generate flight parameters, and send them to the second encryption / decryption module B.

[0088] The second encryption / decryption module B obtains the shared quantum key about the UAV ground control station from the key storage medium, uses it to encrypt the flight parameters to generate a second ciphertext, and sends the second ciphertext to the second Beidou communication module B.

[0089] The second Beidou communication module B generates a second short message based on the second ciphertext and sends it to the UAV ground control station via the Beidou satellite link. In addition to the second ciphertext, the second short message may also include the sequence number of the flight parameters, the key sequence number (e.g., QNumB) of the shared quantum key used for the second ciphertext, and the identifier of the quantum key distribution device (e.g., QDevice2) used for sharing the quantum key.

[0090] The first Beidou communication module A receives the second short message via the Beidou satellite link and sends it to the first encryption / decryption module A.

[0091] The first encryption / decryption module A obtains the key sequence number (e.g., QNumB) and the identifier of the quantum key distribution device (e.g., QDevice2) from the second short message. Based on this, it selects the same shared quantum key used by the UAV, uses the shared quantum key to decrypt the second ciphertext to obtain the plaintext of the flight parameters, and sends the flight parameters to the command system for purposes such as comparing the execution status of flight commands and issuing the next round of flight commands.

[0092] Although the present invention has been described above with reference to the accompanying drawings and specific embodiments, those skilled in the art will readily recognize that the above embodiments are merely exemplary and used to illustrate the principles of the present invention. They do not limit the scope of the present invention. Those skilled in the art can make various combinations, modifications and equivalent substitutions to the above embodiments without departing from the spirit and scope of the present invention.

Claims

1. A quantum-secure Beidou short message based UAV control system, comprising a UAV, a UAV ground control station and a quantum key refilling station; the quantum key refilling station is configured to generate a shared quantum key with the UAV ground control station by means of a quantum key distribution process, and to refill the shared quantum key to the UAV; the UAV ground control station is configured to communicate with the UAV in an encrypted manner by means of the shared quantum key, and comprises a first Beidou communication module A; the UAV is configured to communicate with the UAV ground control station in an encrypted manner by means of the shared quantum key, and comprises a second Beidou communication module B; the first Beidou communication module A comprises a multi-card machine and a plurality of Beidou cards; the plurality of Beidou cards comprise a first Beidou card and N second Beidou cards, N being a positive integer, wherein the first Beidou card is configured to receive a short message, and the N second Beidou cards are configured to send short messages in turn at a preset time interval δT; the UAV ground control station further comprises a command system, a first encryption and decryption module A and a first quantum key distribution device; the UAV further comprises a flight control subsystem and a second encryption and decryption module B; the quantum key refilling station comprises a second quantum key distribution device and a quantum key refilling machine; the first and second quantum key distribution devices are configured to generate a shared quantum key by means of a quantum key distribution process; the quantum key refilling machine is configured to refill the shared quantum key to the UAV; the command system is configured to generate flight instructions; the flight control subsystem is configured to generate flight parameters; the first encryption and decryption module A is configured to encrypt the flight instructions using the shared quantum key to generate a first ciphertext, and to decrypt a second ciphertext to obtain the flight parameters; the second encryption and decryption module B is configured to encrypt the flight parameters using the shared quantum key to generate a second ciphertext, and to decrypt the first ciphertext to obtain the flight instructions; the first Beidou communication module A is configured to generate and send a first short message according to the first ciphertext, and to receive a second short message; the second Beidou communication module B is configured to generate and send a second short message according to the second ciphertext, and to receive the first short message.

2. The drone control system of claim 1, wherein, the preset time interval δT = 1 / (f0*N), f0 being a sending frequency of the second Beidou card; and / or, N is not greater than 15.

3. The drone control system of claim 1, wherein, the second Beidou communication module B comprises a single-card machine and a third Beidou card, the third Beidou card being configured to receive and send short messages. 4.The UAV control system of claim 1, wherein: the UAV further comprises a navigation subsystem and a key storage medium, the navigation subsystem comprising a Beidou positioning module and an inertial navigation module, and the key storage medium being used to store the shared quantum key; and / or, The first short message further comprises at least one of a sequence number of flight instructions, a key sequence number of a shared quantum key for the first ciphertext, and a sequence number of a first quantum key distribution device, and the second short message further comprises at least one of a sequence number of flight parameters, a key sequence number of a shared quantum key for the second ciphertext, and a sequence number of a second quantum key distribution device. 5.A quantum-secure Beidou short message based unmanned aerial vehicle control method, comprising a key distribution step and a short message encryption transmission step; The key distribution step is used for distributing a shared quantum key between an unmanned aerial vehicle and an unmanned aerial vehicle ground control station; The short message encryption transmission step comprises a flight instruction transmission sub-step and a flight parameter transmission sub-step; In the flight instruction transmission sub-step, the unmanned aerial vehicle ground control station encrypts flight instructions using the shared quantum key to generate a first ciphertext, generates a first short message according to the first ciphertext and sends the first short message to the unmanned aerial vehicle through a Beidou satellite link, the unmanned aerial vehicle obtains the first ciphertext from the first short message and decrypts the first ciphertext using the shared quantum key to obtain the plaintext of the flight instructions; In the flight parameter transmission sub-step, the unmanned aerial vehicle encrypts flight parameters using the shared quantum key to generate a second ciphertext, generates a second short message according to the second ciphertext and sends the second short message to the unmanned aerial vehicle ground control station through the Beidou satellite link, the unmanned aerial vehicle ground control station obtains the second ciphertext from the second short message and decrypts the second ciphertext using the shared quantum key to obtain the plaintext of the flight parameters; wherein In the flight instruction transmission sub-step, the unmanned aerial vehicle ground control station sends short messages in turn by means of N second Beidou cards at a preset time interval δT, N being a positive integer. 6.The UAV control method of claim 5, wherein, In the key distribution step, a shared quantum key is first distributed between the unmanned aerial vehicle ground control station and a quantum key refilling station through a quantum key distribution process, and then the shared quantum key is refilled to the unmanned aerial vehicle by the quantum key refilling station. 7.The UAV control method of claim 5, wherein, The preset time interval δT = 1 / (f0*N), f0 being the sending frequency of the second Beidou card; and / or, N is not greater than 15. 8.The UAV control method of claim 5, wherein, The first short message further comprises at least one of a sequence number of flight instructions, a key sequence number of a shared quantum key for the first ciphertext, and a sequence number of a first quantum key distribution device, and the second short message further comprises at least one of a sequence number of flight parameters, a key sequence number of a shared quantum key for the second ciphertext, and a sequence number of a second quantum key distribution device; and, In the flight instruction transmission sub-step, the unmanned aerial vehicle looks up the shared quantum key for decrypting the first ciphertext according to the key sequence number of the shared quantum key for the first ciphertext and the sequence number of the first quantum key distribution device; In the flight parameter transmission sub-step, the unmanned aerial vehicle ground control station looks up the shared quantum key for decrypting the second ciphertext according to the key sequence number of the shared quantum key for the second ciphertext and the sequence number of the second quantum key distribution device. 9.The unmanned aerial vehicle control method of claim 5, which is implemented by means of the unmanned aerial vehicle control system of any one of claims 1-4.

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