CN112102651B - Near space communication control system and method for aircraft and aircraft - Google Patents

Abstract

The invention discloses a near space communication control system and method for an aircraft and the aircraft. The communication control system includes: first antenna element, second antenna element and communication terminal machine, the terminal machine includes: the signal processing module is used for acquiring a first preset frequency band communication signal received by the antenna unit and sending a second preset frequency band communication signal to the antenna unit; the multi-card management module is used for controlling the plurality of transceiving channels to execute the receiving of communication signals or the transmitting of data to be transmitted according to a preset transmitting time sequence; the storage module is used for storing the communication signals and the data to be sent; and the communication control module is used for acquiring the communication control instruction, judging the effectiveness of the communication control instruction, controlling the multi-card management module to receive a communication signal or transmit data to be transmitted according to the communication control instruction, and acquiring the state data of the terminal. The invention adopts double antennas and multi-card time slot multiplexing to transmit and receive signals, improves high dynamic adaptability and improves transmitting frequency.

Description

Near space communication control system and method for aircraft and aircraft

Technical Field

The invention relates to the technical field of aircraft communication, in particular to a near space communication control system and method for an aircraft and the aircraft.

Background

The Near space (Near space) is an airspace 20-100 kilometers away from the ground, is located in key areas above a typhoon, a rainstorm and other disastrous weather systems, and has great development potential in the Near space area by adopting an aircraft to carry out targeted target observation on meteorological indexes along with the development of communication technology and space flight technology.

At present, an aircraft for meteorological monitoring field adopts big dipper short message communication usually, because it is abominable to close on spacecraft operational environment, the difference in temperature is great, the aircraft is great at rising and the change of whereabouts in-process gesture, current communication system who is applied to the aircraft has following problem, on the one hand, in civilian field, the terminal machine that the aircraft was airborne sets up single SIM card usually and carries out the identification mark, because the time interval that the user terminal carries out data transmission to the space satellite receives the restriction, can only carry out once sending task in generally requiring 1 minute, receive the restriction of sending frequency and sending channel, when carrying out meteorological monitoring data transmission, data transmission interval time is long, transmission speed is slow, be difficult to satisfy meteorological monitoring's business demand. On the other hand, current aircraft adopts single antenna to carry out communication signal receiving and dispatching usually, when near space execution flight monitoring task, if the aircraft gesture changes, then produces signal receiving and dispatching blind area easily, leads to signal receiving and dispatching untimely, incomplete, and communication stability is relatively poor, influences meteorological observation effect.

Disclosure of Invention

The invention provides a near space communication control system for an aircraft, which solves the problems of low transmission speed and poor communication stability of the existing aircraft communication system, improves the high dynamic adaptability of the system and improves the sending frequency.

In a first aspect, an embodiment of the present invention provides a near space communication control system for an aircraft, where the aircraft includes a power supply system, an aircraft control system, and a communication control system, where the power supply system is configured to supply power to the communication control system, and the aircraft control system performs data interaction with the communication control system, where the communication control system includes: first antenna element and second antenna element fixed towards different directions to reach communication terminal machine, communication terminal machine includes: the signal processing module is used for receiving first preset frequency band communication signals captured by the first antenna unit and the second antenna unit and sending second preset frequency band communication signals to the first antenna unit and the second antenna unit; the multi-card management module is used for controlling the plurality of transceiving channels to execute the receiving of communication signals or the transmitting of data to be transmitted according to a preset transmitting time sequence; the storage module is used for storing the first preset frequency band communication signal and data to be sent; the communication control module is respectively electrically connected with the multi-card management module, the storage module and the aircraft control system, and is used for acquiring a communication control instruction sent by the aircraft control system, judging the effectiveness of the communication control instruction, controlling the multi-card management module to receive a communication signal or transmit data to be transmitted according to the communication control instruction, acquiring state data of a terminal and sending the state data to the aircraft control system.

Optionally, the communication control module includes: the device comprises an instruction data acquisition unit, an instruction control unit, an instruction execution unit, a state detection unit and a to-be-sent data management unit; the instruction data acquisition unit is used for receiving communication control instructions sent by the aircraft control system, wherein the communication control instructions comprise data sending control instructions, power on and off control instructions, reset control instructions, upper injection control instructions and data interaction control instructions; the instruction control unit is used for receiving the communication control instruction, judging the effectiveness of the communication control instruction and controlling the instruction execution unit to work according to the communication control instruction; the instruction execution unit is used for managing and executing the communication control instruction; the state detection unit is used for detecting the state of the terminal in the communication process in real time and sending the state data of the terminal to the aircraft control system, wherein the state of the terminal comprises a working state, a reset state, an upper injection state and a sending state; and the data to be sent management unit is used for receiving the data sending control instruction and storing or sending the data to be sent by the aircraft control system.

Optionally, the to-be-sent data management unit is further configured to determine whether an available communication satellite exists, and if the available communication satellite exists, the to-be-sent data management unit sends the to-be-sent data to the multi-card management module; otherwise, the to-be-sent data management unit stores the to-be-sent data to the storage module.

Optionally, the multi-card management module includes: card number memory cell, send the buffer memory cell, receive buffer memory cell, send the sequential control unit, receive the sequential control unit, satellite selection unit and card number management unit; the card number storage unit is used for storing card parameters of a plurality of virtual cards, and the card parameters comprise user identification card numbers, an encryption algorithm and a storage space; the receiving cache unit is provided with a plurality of receiving channels, the receiving channels are in communication connection with the signal processing module, and the receiving channels are used for receiving the first preset frequency band communication signals and caching the first preset frequency band communication signals; the receiving time sequence control unit is used for controlling the receiving time sequence of each receiving channel, sending the communication signals received by the receiving channels to the satellite selection unit and sending the user identification card numbers corresponding to the receiving channels receiving the communication signals to the card number management unit; the satellite selection unit is used for receiving the communication signals, determining the channel state and the channel signal-to-noise ratio of a receiving channel according to the receiving result, determining the number of an available satellite according to the channel signal-to-noise ratio, and sending the number of the available satellite to the card number management unit; the card number management unit is used for determining an available virtual card according to the available satellite number and sending the available card parameter to the sending time sequence control unit according to a preset rule; the sending cache unit is provided with a plurality of sending channels, the plurality of sending channels are in communication connection with the signal processing module, and the sending channels are used for receiving data to be sent, caching the data to be sent and sending the data to be sent through the corresponding sending channels after receiving a data sending control instruction; and the sending time sequence control unit is used for determining an available sending channel according to the available card parameters and controlling the sending time sequence of the available sending channel, wherein the sending time sequence comprises single data sending duration and adjacent two-time data sending interval time.

Optionally, the signal processing module includes: the dual-channel signal receiving module is used for acquiring a first preset frequency band communication signal received by the first antenna unit and/or the second antenna unit and carrying out filtering, frequency conversion and demodulation processing on the first preset frequency band communication signal; the dual-channel signal transmitting module is used for modulating, frequency-converting and filtering data to be transmitted to obtain a second preset frequency band communication signal and transmitting the second preset frequency band communication signal to the first antenna unit or the second antenna unit; the signal processing control unit is used for providing control signals for the dual-channel signal receiving module and the dual-channel signal sending module, receiving a first preset frequency band communication signal and sending data to be sent to the dual-channel signal sending module.

Optionally, the communication terminal further includes: and the power supply management module is used for carrying out voltage transformation on the power supply voltage of the power supply system, carrying out power-on/power-off control on the communication terminal and carrying out real-time monitoring on the voltage and the current.

Optionally, the communication terminal further includes: and the interface module is used for realizing data interaction between the communication control module and the aircraft control system, decoding the communication control instruction and encoding the state data of the terminal.

In a second aspect, the embodiment of the present invention further provides an aircraft including the above proximity space communication control system for an aircraft.

In a third aspect, an embodiment of the present invention further provides a near space communication control method for an aircraft, for controlling the above communication control system, where the communication control system includes a multi-card management module and a storage module, and the control method includes the following steps: acquiring a communication control instruction; carrying out validity judgment on the communication control instruction; if the communication control instruction is valid, controlling the multi-card management module to receive communication signals or transmit data to be transmitted according to a preset transmission time sequence; and acquiring the state data of the terminal machine, and monitoring the communication control system according to the state data.

Optionally, the method for controlling communication in a near space for an aircraft further includes: judging whether an available communication satellite exists or not; if the available communication satellite exists, the data to be sent is sent to the multi-card management module; otherwise, the data to be sent is sent to the storage module for storage.

The communication control method provided by the embodiment of the invention controls a near space communication control system for an aircraft, the communication control system is provided with a first antenna unit and a second antenna unit which are fixedly oriented to different directions, a communication terminal is arranged to be in communication connection with the first antenna unit and the second antenna unit, the receiving and sending stability of communication signals during the adjustment of the flight attitude of the aircraft is ensured, the high dynamic adaptability of the system is improved, the communication terminal adopts a signal processing module to modulate or demodulate the communication signals, adopts a communication control module to receive control instructions and data to be sent, controls a multi-card management module to control a plurality of receiving and sending channels to receive the communication signals or send the data to be sent according to a preset time slot multiplexing strategy, the sending frequency of the communication signals is improved, the data transmission effect is improved, and the modules of the system are designed in an integrated mode, the size, power consumption and weight of the power amplifying device are reduced, and the carrying cost is saved.

Drawings

FIG. 1 is a schematic structural diagram of a near space communication control system for an aircraft according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a communication control module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a multi-card management module according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another close-proximity spatial communication control system for an aircraft according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an aircraft according to a second embodiment of the present invention;

fig. 6 is a flowchart of a method for controlling communication in a near space of an aircraft according to a third embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a schematic structural diagram of a near space communication control system for an aircraft according to an embodiment of the present invention, which is applicable to an application scenario of communication control of an aircraft performing near space flight operations.

Referring to fig. 1, the aircraft 200 for flight operation in the near space includes a power supply system 010, an aircraft control system 020 and a communication control system 030, where the power supply system 010 is configured to supply power to the communication control system 030, typically, a power supply voltage of the power supply system 010 may be a direct current 12V voltage, the aircraft control system 020 performs data interaction with the communication control system 030, and the aircraft control system 020 is configured to send data to be sent and a communication control instruction to the communication control system 030 according to a standard communication protocol, and monitor and control power on and off of the communication control system 030.

Continuing to refer to fig. 1, the communication control system 030 includes: a first antenna unit 301 and a second antenna unit 302 fixed to face different directions, and a communication terminal 40 communicatively connected to the first antenna unit 301 and the second antenna unit 302, wherein the communication terminal 40 includes: the signal processing module 410 is configured to receive a first preset frequency band communication signal captured by the first antenna unit 301 and the second antenna unit 302, and send a second preset frequency band communication signal to the first antenna unit 301 and the second antenna unit 302; the multi-card management module 420 is configured to control the multiple transceiving channels to receive the communication signals or transmit data to be transmitted according to a preset transmission timing sequence; the storage module 430 is configured to store the first preset frequency band communication signal and data to be sent; the communication control module 440 is electrically connected with the multi-card management module 420, the storage module 430 and the aircraft control system 020, and the communication control module 440 is configured to acquire a communication control instruction sent by the aircraft control system 020, perform validity judgment on the communication control instruction, control the multi-card management module 420 to perform communication signal reception or data transmission to be transmitted according to the communication control instruction, acquire state data of a terminal, and send the state data to the aircraft control system 020.

In this embodiment, the first antenna unit 301 and the second antenna unit 302 are designed as the same integrated structure, and typically, the first antenna unit 301 and the second antenna unit 302 may be implemented as microstrip antenna structures. The first antenna unit 301 and the second antenna unit 302 are configured to receive first preset frequency band communication signals transmitted by communication satellites in different directions and transmit second preset frequency band communication signals to corresponding communication satellites, where the first preset frequency band communication signals may typically be S-band beidou short message radio frequency signals, and the second preset frequency band communication signals may typically be L-band beidou short message radio frequency signals.

Optionally, the first antenna unit includes an S-band sub-antenna unit and an L-band sub-antenna unit, and the second antenna unit includes an S-band sub-antenna unit and an L-band sub-antenna unit, where the S-band sub-antenna unit is configured to receive a first preset-band communication signal, and the L-band sub-antenna unit is configured to transmit a second preset-band communication signal.

In this embodiment, the first antenna unit 301 may be fixed to the first top end of the aircraft 200 toward the first direction, and the first direction and the longitudinal symmetric plane of the aircraft 200 may form a first included angle, for example, the first direction may be the left side of the aircraft 200, and the first included angle may be equal to 45 °; the second antenna unit 302 is fixed to the second top end of the aircraft 200 toward the second direction, the second direction has a second included angle with the longitudinal symmetric plane of the aircraft 200, for example, the second direction may be the right side of the aircraft 200, the second included angle may be equal to 45 °, the first antenna unit 301 and the second antenna unit 302 are both installed at an inclination angle of 45 ° with the aircraft 200, the included angle between the first direction and the second direction is equal to the sum of the first included angle and the second included angle, that is, the included angle between the first direction and the second direction may be equal to 90 °, it is ensured that the aircraft 200 flies in any attitude, the communication control system 030 may complete the transceiving function of the communication signals, and it is beneficial to improve the high dynamic adaptability of the system.

In this embodiment, the signal processing module 410 is configured to receive a first preset frequency band communication signal, and perform filtering, frequency conversion, and demodulation processing on the first preset frequency band communication signal; the signal processing module 410 is further configured to modulate, frequency-convert, and filter data to be transmitted to obtain a second preset frequency band communication signal, and transmit the second preset frequency band communication signal to a corresponding communication satellite through the first antenna unit 301 or the second antenna unit 302, specifically, the signal processing module 410 is in communication connection with a receiving port of the first antenna unit 301 through a first high-frequency cable, is in communication connection with a receiving port of the second antenna unit 302 through a second high-frequency cable, and the signal processing module 410 is in communication connection with a transmitting port of the first antenna unit 301 through a third high-frequency cable, and is in communication connection with a transmitting port of the second antenna unit 302 through a fourth high-frequency cable.

In this embodiment, the communication control system 030 further includes a radio frequency front end, the radio frequency front end is disposed between the signal processing module 410 and the antenna unit, and the radio frequency front end is configured to perform power amplification on the communication signal.

Specifically, when the aircraft 200 executes a flight task, the first antenna unit 301 and the second antenna unit 302 capture a first preset frequency band communication signal around in real time, the radio frequency front end is adopted to perform filtering and low noise amplification processing on the first preset frequency band communication signal received by the antenna units, and send the processed first preset frequency band communication signal to the signal processing module 410, the signal processing module 410 demodulates and despreads the first preset frequency band communication signal, and sends the demodulated first preset frequency band communication signal to the multi-card management module 420 for communication signal caching and channel calibration, if the communication control module 440 receives a communication signal forwarding instruction, the communication control module 440 controls the multi-card management module 420 to send the received first preset frequency band communication signal to the aircraft control system 020, and signal forwarding is completed; if the communication control module 440 receives the invalid control instruction, the communication control module 440 controls the multi-card management module 420 to send the received first preset frequency band communication signal to the storage module 430 for storage.

In the process that the aircraft control system 020 sends data to be sent to the ground control center, the communication control module 440 receives the data to be sent, if the communication control module 440 receives a data sending control instruction, the data to be sent is sent to the multi-card management module 420, if an available communication satellite exists in the communication system, the multi-card management module 420 controls an available sending channel corresponding to the available communication satellite according to a preset sending time sequence to send the data to be sent to the signal processing module 410, the signal processing module 410 performs modulation processing on the data to be sent to obtain a second preset frequency band communication signal, and the second preset frequency band communication signal is sent to the available communication satellite through the first antenna unit 301 or the second antenna unit 302 to complete signal sending. If there is no available communication satellite in the communication system, the multi-card management module 420 sends data to be sent to the storage module 430 for storage.

Therefore, in the near space communication control system for an aircraft provided in the embodiment of the present invention, the first antenna unit and the second antenna unit fixed to face different directions are provided, the communication terminal is set to be in communication connection with the first antenna unit and the second antenna unit, so as to ensure the transceiving stability of communication signals when the flight attitude of the aircraft is adjusted, which is beneficial to improving the high dynamic adaptability of the system, the communication terminal adopts the signal processing module to modulate or demodulate the communication signals, adopts the communication control module to receive control instructions and data to be transmitted, and controls the multi-card management module to control multiple transceiving channels to receive the communication signals or transmit the data to be transmitted according to the preset time slot multiplexing strategy, which is beneficial to improving the transmission frequency of the communication signals and improving the data transmission effect, and each module of the system adopts an integrated design, so as to reduce the size, and the size of the power amplification device, Power consumption and weight, saving the carrying cost.

Fig. 2 is a schematic structural diagram of a communication control module according to an embodiment of the present invention.

Optionally, the communication control module 440 is configured to process the instruction data, the status data, and the data to be sent.

The instruction data is a communication control instruction sent by the aircraft control system 020 to the communication control module 440 and used for completing control operations such as monitoring and data retrieval on the communication control system, the instruction data is immediate execution data, and if the communication control module 440 receives the instruction data, the communication control module 440 controls the corresponding execution unit to immediately execute the instruction. The state data are each state parameter of the communication terminal 40, including a working state, a reset state, an upper note state, a sending state and the like, and the state data are sent to the aircraft control system 020, so that the aircraft control system 020 can monitor the communication terminal 40. The data to be sent is communication data formed by packing the aircraft control system 020 according to a preset standard protocol, and FF is filled by default so that the data to be sent reaches a preset standard size.

Referring collectively to fig. 2, the communication control module 440 includes: an instruction control unit 4401, an instruction execution unit 4402, a state detection unit 4403, and a to-be-sent data management unit 4404.

The instruction control unit 4401 is configured to receive a communication control instruction, perform validity determination on the communication control instruction, and control the corresponding instruction execution unit 4402 to operate according to the communication control instruction, the instruction execution unit 4402 is configured to manage and execute the communication control instruction, the communication control instruction includes a data sending control instruction, a power on/off control instruction, a reset control instruction, an upper injection control instruction, a data interaction control instruction, and the like, and the power on/off control instruction is used for controlling the communication terminal 40 to perform power on or power off operation; the reset control instruction is used to implement reset control of the communication terminal 40, and if the instruction control unit 4401 receives the reset control instruction, each module of the communication terminal 40 is controlled to execute operations of resetting and reloading; the upper note control instruction is used for realizing upper note control of the communication terminal machine 40, if the aircraft control system 020 finds that the communication terminal machine 40 is abnormal, the aircraft control system 020 sends the upper note control instruction and a corresponding program package to the instruction control unit 4401, reloads the program according to the new program package, replaces the previous program package with the new program package, and reloads the program package, wherein the upper note is used for completing program writing operation; the data interaction control instruction is used for realizing the state data acquisition of the aircraft control system 020 to the communication terminal machine 40.

Specifically, the instruction control unit 4401 mainly completes execution control of the communication control instruction, the instruction control unit 4401 determines the instruction content of the communication control instruction, if an instruction code of the communication control instruction has an error, the instruction control unit 4401 refuses execution, feeds back corresponding state data to the aircraft control system 020, and notifies the aircraft control system 020 of a communication fault; if the instruction control unit 4401 receives the data transmission control instruction, the instruction control unit 4401 immediately controls the data management unit 4404 to be transmitted to execute data transmission operation.

In this embodiment, the to-be-transmitted data management unit 4404 is configured to receive a data transmission control instruction, and store or transmit data to be transmitted, which is transmitted by the aircraft control system 020.

Optionally, the to-be-transmitted data management unit 4404 is further configured to determine whether an available communication satellite exists, and if an available communication satellite exists, the to-be-transmitted data management unit 4404 transmits the to-be-transmitted data to the multi-card management module 420; otherwise, the to-be-transmitted data management unit 4404 stores the to-be-transmitted data in the storage module 430.

Specifically, if the instruction control unit 4401 receives a data transmission control instruction, the data to be transmitted management unit 4404 is controlled to determine whether an available communication satellite for communicating with the communication control system exists, that is, determine a communication state of the communication satellite at this time, and if an available communication satellite exists, the data to be transmitted management unit 4404 is controlled to transmit data to be transmitted to the multi-card management module 420; if there is no available communication satellite, the to-be-transmitted data management unit 4404 is controlled to transmit the to-be-transmitted data to the storage module 430 for storage.

In this embodiment, the state detecting unit 4403 is configured to detect the state data of the communication terminal 40 in the communication process in real time, and send the state data of the communication terminal 40 to the aircraft control system 020, so as to monitor the communication terminal 40 by the aircraft control system 020.

The state data includes working state data, reset state data, upper note state data and sending state data, and the working state data includes voltage, current, terminal execution time and the like of each module in the working process of the communication terminal machine 40; the reset state data includes the reset times and reset reasons of the communication terminal 40, the first counter can be used for recording the system reset times, if the system is reset once, the reset counting times are increased once, and the reset reasons include active reset and passive reset; the upper note state data includes the upper note times of the communication terminal machine 40, the system running state after the upper note and the program version number, and the upper note state data is used for judging whether the execution process of the upper note control instruction is abnormal or not; the sending state data is used for realizing the state monitoring of whether each piece of data to be sent is sent successfully, the number of successful sending times can be recorded by adopting a second counter, and the data sending success rate is calculated according to the number of successful sending times.

It should be noted that, in the communication process, the state data volume of the communication end machine 40 is large, and if the instruction control unit 4401 receives the data interaction control instruction, the control state detection unit 4403 sends the state data packet to the aircraft control system 020; if the instruction control unit 4401 does not receive the data interaction control instruction, the control state detection unit 4403 performs packed storage on the state data, so that the condition that the state data occupies a system memory to influence the operation speed of the controller is avoided, and the data processing efficiency is improved.

Therefore, the embodiment of the invention can timely process the fault exception by monitoring the state data of the communication terminal machine in real time, is favorable for improving the reliability of the system, and meanwhile, the communication terminal machine can realize the automatic update of the system software through the software uploading function, thereby further improving the reliability of the system.

Fig. 3 is a schematic structural diagram of a multi-card management module according to an embodiment of the present invention.

Alternatively, as shown in fig. 3, the multi-card management module 420 includes: a card number storage unit 4201, a transmission buffer unit 4202, a reception buffer unit 4203, a transmission timing control unit 4204, a reception timing control unit 4205, a satellite selection unit 4206, and a card number management unit 4207.

The card number storage unit 4201 is configured to store card parameters of multiple virtual cards, where the card parameters include a user identification card number, an encryption algorithm, and a storage space, each virtual card is provided with a unique user identification card number, and specifically, the card parameters of the multiple virtual cards may be stored according to the user identification card number, and the user identification card number is used to implement a terminal identifier in a communication process.

In this embodiment, each antenna unit is correspondingly provided with a plurality of virtual cards, and the card number storage unit 4201 includes a first card number storage unit 4201 ' and a second card number storage unit 4201 ″, where the virtual cards stored in the first card number storage unit 4201 ' are used to implement signal transceiving of the first antenna unit 301, and the virtual cards stored in the second card number storage unit 4201 ' are used to implement signal transceiving of the second antenna unit 302.

Optionally, the receiving buffer unit 4203 is provided with a plurality of receiving channels, the receiving channels are in communication connection with the signal processing module 410, and the receiving channels are configured to receive the first preset frequency band communication signal and perform buffer processing on the first preset frequency band communication signal. The receiving timing control unit 4205 is configured to control a receiving timing of each receiving channel, send the communication signal received by the receiving channel to the satellite selecting unit 4206, and send the user identification card number corresponding to the receiving channel receiving the communication signal to the card number management unit 4207.

For example, the receiving buffer unit 4203 may be configured with 10 receiving channels, where the first antenna unit 301 corresponds to 5 receiving channels, the second antenna unit 302 corresponds to 5 receiving channels, each receiving channel corresponds to one channel number, and the receiving timing control unit 4205 controls the receiving timing of each receiving channel according to the channel number, and each channel number corresponds to one available satellite number.

For example, the preset receiving sequence may be set as a receiving interval of 20 ns, the receiving sequence control unit 4205 sends an inquiry pulse to the receiving buffer unit 4203 every 20 ns, sequentially inquires 10 receiving channels of the receiving buffer unit 4203, obtains communication signals of a plurality of receiving channels, sends the user identification card number corresponding to the receiving channel with the communication signal to the card number management unit 4207, and calibrates the channel number, the user identification card number, and the received communication signal through the card number management unit 4207.

Optionally, the satellite selecting unit 4206 is configured to receive the communication signal, determine a channel state and a channel signal-to-noise ratio of the receiving channel according to the receiving result, determine an available satellite number according to the channel signal-to-noise ratio, and send the available satellite number to the card number management unit 4207; the card number management unit 4207 is configured to determine an available virtual card according to an available satellite number, and transmit the available card parameter to the transmission timing control unit 4204 according to a preset rule, where the preset rule includes a single transmission duration and a time interval between two adjacent transmissions of the available card parameter.

In this embodiment, since the aircraft is disturbed by airflow during flight and needs to perform flight attitude adjustment, at the time of communication signal forwarding, the first antenna unit 301 or the second antenna unit 302 may be shielded by the aircraft, and the communication is performed with the corresponding communication satellite through the non-shielded antenna unit, and at this time, the available communication satellite is identified by the satellite selection unit 4206.

Specifically, the satellite selection unit 4206 determines the states of the receiving channels corresponding to the first antenna unit 301 and the second antenna unit 302 according to whether the receiving channels have communication signals, and obtains the snr of each receiving channel, if the receiving channels receive the communication signals and the snr of the receiving channels is greater than the preset snr threshold, it determines that the receiving channels are valid, stores the channel numbers, the snr of the receiving channels, and the available satellite numbers corresponding to the receiving channels, and sends the available satellite numbers to the card number management unit 4207 in the order of the snr from high to low.

Further, the card number management unit 4207 manages card parameters of the first card number storage unit 4201 'and the second card number storage unit 4201 ″ respectively, determines an effective antenna unit according to the channel status, for example, the effective antenna unit may be the first antenna unit 301 or the second antenna unit 302, and if the first antenna unit 301 is the effective antenna unit, that is, the receiving channel corresponding to the first antenna unit 301 receives the communication signal, selects an available virtual card in the first card number storage unit 4201' for data distribution, and sends the available card parameters to the sending timing control unit 4204 according to a preset rule; if the second antenna unit 302 is an effective antenna unit, that is, the receiving channel corresponding to the second antenna unit 302 receives the communication signal, the available virtual card in the second card number storage unit 4201 ″ is selected for data broadcasting, and the available card parameter is sent to the sending timing control unit 4204 according to the preset rule.

It should be noted that, at any time, the card number management unit 4207 selects a unique card parameter to perform data broadcasting operation, and outputs a plurality of available card parameters in a round-robin manner, and the specific output switching time may be determined according to the transmission timing of the transmission timing control unit 4204.

Optionally, the sending buffer unit 4202 is provided with a plurality of transmitting channels, the transmitting channels are in communication connection with the signal processing module 410, and the transmitting channels are configured to receive data to be sent, perform buffer processing on the data to be sent, and transmit the data to be sent through the corresponding transmitting channels after receiving the data sending control instruction; the transmission timing control unit 4204 is configured to determine an available transmission channel according to the available card parameter, control a transmission timing of the available transmission channel, and transmit data to be transmitted through the available transmission channel, where the transmission timing includes a single data transmission duration and an interval time between two adjacent data transmissions.

The available transmission channel is a transmission channel for signal communication with the active antenna unit at the current time.

Illustratively, the predefined transmission timing may include a single data transmission duration of 180 ms and a two-adjacent data transmission interval of 4 s.

Specifically, after receiving a data transmission control instruction, preferentially selecting a communicable satellite with a high signal-to-noise ratio for data transmission, determining an available transmission channel by the transmission timing control unit 4204 according to the received available card parameter, transmitting data to be transmitted in the transmission buffer unit 4202 through the transmission channel of the effective antenna unit (for example, the first antenna unit or the second antenna unit) according to a preset transmission timing and the available card parameter at the current time, after the current signal transmission is finished, transmitting the card parameter of the next available virtual card to the transmission timing control unit 4204 after 4 seconds of transmission interval time, performing data cycle transmission by a plurality of available virtual cards, where the card number switching time interval is equal to the data transmission interval time of two adjacent times, performing data autonomous cycle transmission according to the communication state of the available communication satellite, and completing 15 times of data transmission in 1 minute at most, the transmission efficiency of the communication signal is improved to 15 times.

For example, the first antenna unit 301 may correspond to 16 virtual cards, and the second antenna unit 302 may correspond to 16 virtual cards, where the setting of multiple virtual cards is beneficial to shortening the data broadcasting time interval and improving the transmission efficiency of the communication signal.

Therefore, the embodiment of the invention controls the multiple virtual cards to realize signal receiving and sending by adjusting the sending time sequence, solves the problem of low transmission speed of the existing aircraft communication system, is favorable for shortening the data broadcasting time interval and improving the sending efficiency

Optionally, the signal processing module comprises: the dual-channel signal receiving module is used for acquiring a first preset frequency band communication signal received by the first antenna unit 301 and/or the second antenna unit 302, and filtering, frequency converting and demodulating the first preset frequency band communication signal; the dual-channel signal transmitting module is configured to modulate, frequency convert, and filter data to be transmitted to obtain a second preset frequency band communication signal, and transmit the second preset frequency band communication signal to the first antenna unit 301 or the second antenna unit 302; and the signal processing control unit is used for providing control signals for the dual-channel signal receiving module and the dual-channel signal transmitting module, receiving the first preset frequency band communication signals and transmitting data to be transmitted to the dual-channel signal transmitting module.

Optionally, the dual-channel signal receiving module includes a first signal receiving module and a second signal receiving module, the first signal receiving module includes a first filtering unit for implementing signal filtering, a first down-conversion unit for implementing signal down-conversion processing, a first analog-to-digital conversion unit for converting an analog signal into a digital signal, a first demodulation unit for implementing signal demodulation, and a first information caching unit for caching a first preset frequency band communication signal, which are connected in sequence, and the first preset frequency band communication signal is gradually transmitted to the first information caching unit by the first filtering unit; the second signal receiving module comprises a second filtering unit for realizing signal filtering, a second down-conversion unit for realizing down-conversion processing of signals, a second analog-to-digital conversion unit for converting analog signals into digital signals, a second demodulation unit for realizing signal demodulation and a second information cache unit for caching first preset frequency band communication signals, which are sequentially connected, and the first preset frequency band communication signals are gradually transmitted to the second information cache unit along the second signal receiving module by the second filtering unit.

Optionally, the first down-conversion unit includes two stages of down-converters connected in series, and performs down-conversion on the first preset frequency band communication signal twice to generate a preset intermediate frequency signal; the second down-conversion unit comprises two stages of down-converters connected in series, and performs down-conversion on the first preset frequency band communication signal twice to generate a preset intermediate frequency signal.

Optionally, the dual-channel signal sending module includes a first signal sending module and a second signal sending module, the first signal sending module includes a third filtering unit for implementing signal filtering, a first up-conversion unit for implementing signal up-conversion processing, a first digital-to-analog conversion unit for converting a digital signal into an analog signal, a first modulation unit for implementing signal modulation, and a third information caching unit for caching a second preset frequency band communication signal, which are connected in sequence, and data to be sent is gradually transmitted to the third filtering unit by the third information caching unit; the second signal transmitting module comprises a fourth filtering unit for realizing signal filtering, a second up-conversion unit for realizing signal up-conversion processing, a second digital-to-analog conversion unit for converting digital signals into analog signals, a second modulation unit for realizing signal modulation and a fourth information cache unit for caching second preset frequency band communication signals, which are sequentially connected, and data to be transmitted are gradually transmitted to the fourth filtering unit by the fourth information cache unit.

Therefore, the signal processing module provided by the embodiment of the invention is provided with the double antennas and the corresponding double-channel transceiving modules, can realize homologous sources of signals, reduces modulation and demodulation errors, and is favorable for improving the communication efficiency and quality.

Fig. 4 is a schematic structural diagram of a communication terminal according to an embodiment of the present invention.

Optionally, as shown in fig. 4 in combination, the communication terminal 40 further includes: the power management module 450 is configured to perform voltage conversion on a power supply voltage of the power supply system 010, perform power on/off control on a power consumption load of the communication terminal 40, and monitor a real-time voltage and a real-time current of the communication terminal 40.

Optionally, the power management module 450 includes: the power supply comprises a filtering unit, a switch unit, a detection unit, a multistage voltage conversion unit and a power supply control unit, wherein the input end of the filtering unit is electrically connected with a power supply, the output end of the filtering unit is electrically connected with the input end of the multistage voltage conversion unit through the switch unit, and the filtering unit is used for filtering a first voltage provided by the power supply; the multi-stage voltage conversion unit is provided with a plurality of voltage conversion circuits, is used for converting the first voltage into a plurality of output voltages, has different voltage values, and provides the plurality of output voltages and the first voltage for the electric load of the aircraft; the detection unit is used for acquiring real-time voltage values and real-time current values of all elements in real time; the power supply control unit is electrically connected with the control end of the switch unit and is used for receiving the real-time voltage value and the real-time current value, comparing the real-time voltage value with a preset voltage threshold value, comparing the real-time current value with a preset current threshold value, outputting a pulse signal according to a comparison result and controlling the switch unit to be switched on or switched off.

Optionally, the multi-stage voltage conversion unit includes: the input end of the first voltage conversion circuit is electrically connected with the output end of the filtering unit, the output end of the first voltage conversion circuit is respectively electrically connected with the input ends of the second voltage conversion circuit, the third voltage conversion circuit and the fourth voltage conversion circuit, and the first voltage conversion circuit is used for converting the first voltage into a first output voltage; the second voltage conversion circuit is used for converting the first output voltage into a second output voltage; the third voltage conversion circuit is used for converting the first output voltage into a third output voltage; the fourth voltage conversion circuit is used for converting the first output voltage into a fourth output voltage.

Illustratively, the first voltage is equal to a dc 12V voltage, the first output voltage is equal to a dc 5V voltage, the second output voltage is equal to a dc 3.3V voltage, the third output voltage is equal to a dc 1.8V voltage, and the fourth output voltage is equal to a dc 1.2V voltage.

Therefore, the power management module provided by the embodiment of the invention is provided with the filtering and monitoring circuit, when the power supply system is abnormal, the power management module can actively complete the power-off operation of the system, thereby avoiding system faults caused by overcurrent and the like, and being beneficial to improving the reliability of the system.

Optionally, the communication terminal 40 further includes: and the interface module is used for realizing data interaction between the communication control module 440 and the aircraft control system 020, decoding the communication control instruction and encoding the state data of the terminal.

Specifically, in the signal transmission process, the interface module receives a communication control instruction and data to be transmitted of the aircraft control system 020 according to a preset standard communication protocol, decodes the communication control instruction and the data to be transmitted, and transmits the decoded instruction and data to the communication control module 440, meanwhile, when the data interaction control instruction is received, the communication control module 440 transmits state data of the terminal to the interface module, the interface module performs data encoding according to the preset standard protocol, and transmits the encoded data to the aircraft control system 020, so that data interaction is realized.

Therefore, the communication control system provided by the embodiment of the invention can adopt the aircraft control system to carry out real-time monitoring and instruction control on the communication terminal.

Example two

The second embodiment of the invention provides an aircraft, and fig. 5 is a schematic structural diagram of the aircraft provided in the second embodiment of the invention. As shown in fig. 5, the aircraft 200 includes the above-described proximity space communication control system 030 for aircraft.

Referring to fig. 5 in combination, the aircraft 200 further includes a power supply system 010 and an aircraft control system 020, where the power supply system 010 is configured to supply power to the communication control system 030, typically, a power supply voltage of the power supply system 010 may be a direct current 12V voltage, the aircraft control system 020 performs data interaction with the communication control system 030, and the aircraft control system 020 is configured to send data to be sent and a communication control instruction to the communication control system 030 according to a standard communication protocol, and monitor and control power on and off of the communication control system 030.

In this embodiment, the aircraft 200 may be an airship or a drone.

The aircraft provided by the embodiment of the invention is provided with a near space communication control system for control, the communication control system is provided with a first antenna unit and a second antenna unit which are fixedly oriented to different directions, a communication terminal is arranged to be in communication connection with the first antenna unit and the second antenna unit, the transceiving stability of communication signals is ensured when the flight attitude of the aircraft is adjusted, and the high dynamic adaptability of the system is favorably improved Power consumption and weight, saving the carrying cost.

EXAMPLE III

The third embodiment of the invention provides a near space communication control method for an aircraft, and the third embodiment of the invention is used for controlling the near space communication control system for the aircraft, wherein the communication control system comprises a multi-card management module and a storage module.

In this embodiment, the communication control system further includes a first antenna unit and a second antenna unit fixed facing different directions, and the communication control system captures a first preset frequency band communication signal through the first antenna unit and the second antenna unit, and transmits a second preset frequency band communication signal to the communication satellite through the first antenna unit or the second antenna unit.

Fig. 6 is a flowchart of a method for controlling communication in a near space of an aircraft according to a third embodiment of the present invention. As shown in fig. 6, the control method includes the steps of:

step S1: and acquiring a communication control instruction.

In this embodiment, the control method is used for processing instruction data, status data, and data to be sent, where the instruction data is a communication control instruction and is used to complete control operations such as monitoring and data retrieval on a communication control system, and the instruction data is immediate execution data, and if the instruction data is received, the corresponding execution unit is controlled to immediately execute the instruction. The state data are all state parameters of the system, including a working state, a reset state, an upper injection state, a sending state and the like, and the state data are sent to the aircraft control system, so that real-time monitoring of the system can be realized. And the data to be sent is communication data formed by packaging the data to be sent by the aircraft control system according to a preset standard protocol, and the FF is filled by default so that the data to be sent reaches a preset standard size.

Step S2: and judging the effectiveness of the communication control command.

Step S3: and if the communication control instruction is effective, controlling the multi-card management module to receive the communication signal or transmit the data to be transmitted according to a preset transmission time sequence.

Step S4: and acquiring state data of the terminal machine, and monitoring the communication control system according to the state data.

Specifically, when the aircraft executes a flight task, the first antenna unit and the second antenna unit capture a first preset frequency band communication signal around in real time, a radio frequency front end is adopted to filter and amplify the first preset frequency band communication signal received by the antenna unit, the first preset frequency band communication signal is demodulated and de-spread, the demodulated first preset frequency band communication signal is sent to the multi-card management module to perform communication signal caching and channel calibration, and if a communication signal forwarding instruction is received, the multi-card management module is controlled to send the received first preset frequency band communication signal to the aircraft control system to complete signal forwarding; and if an invalid control instruction is received, controlling the multi-card management module to send the received first preset frequency band communication signal to the storage module for storage.

Optionally, the control method further comprises the following steps: judging whether an available communication satellite exists or not; if the available communication satellite exists, sending data to be sent to a multi-card management module; otherwise, sending the data to be sent to a storage module for storage.

Specifically, in the process that the aircraft control system sends data to be sent to the ground control center, if a data sending control instruction is received, the data to be sent is sent to the multi-card management module, whether an available communication satellite exists in the communication system is judged, if the available communication satellite exists in the communication system, the multi-card management module controls an available sending channel corresponding to the available communication satellite according to a preset sending time sequence to send the data to be sent, the data to be sent is modulated to obtain a second preset frequency band communication signal, and the second preset frequency band communication signal is sent to the available communication satellite through the first antenna unit or the second antenna unit, so that signal sending is completed. And if the communication system does not have an available communication satellite, sending the data to be sent to a storage module for storage.

Optionally, the method for controlling near space communication according to the embodiment of the present invention is a method for controlling multiple transceiving channels of a multi-card management module to receive a communication signal or transmit data to be transmitted, and includes the following steps: acquiring data to be transmitted; acquiring channel states and channel signal-to-noise ratios of a plurality of receiving channels; determining the number of an available satellite according to the channel state and the channel signal-to-noise ratio; determining an available virtual card according to the available satellite number, and externally outputting the available card parameters according to a preset rule; determining an available transmitting channel according to the available card parameters, controlling the transmitting time sequence of the available transmitting channel, and transmitting data to be transmitted through the available transmitting channel, wherein the transmitting time sequence comprises single data transmitting duration and adjacent two data transmitting interval time.

Optionally, determining the number of the available satellite according to the channel state and the channel signal-to-noise ratio includes the following steps: determining a channel state according to whether a communication signal exists in a receiving channel; judging whether the channel signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold value or not; if the channel signal-to-noise ratio is larger than a preset signal-to-noise ratio threshold value, acquiring an available satellite number corresponding to a receiving channel; and outputting the available satellite number according to the channel signal-to-noise ratio.

Optionally, outputting the available satellite number according to the channel signal-to-noise ratio includes: sequencing the numbers of the available satellites in sequence from high to low according to the numerical value of the channel signal-to-noise ratio; and sequentially outputting the available satellite numbers outwards.

Optionally, determining an available virtual card according to the available satellite number, and outputting the available card parameters externally according to a preset rule, including the following steps: determining an effective antenna unit according to the available satellite number; determining an available virtual card and available card parameters according to the effective antenna unit, wherein the card parameters comprise a user identification card number, an encryption algorithm and a storage space; and outputting the available card parameters to the outside in sequence according to a preset rule.

Optionally, controlling the transmission timing of the available transmission channel includes the following steps: acquiring a preset sending time sequence, wherein the preset sending time sequence comprises a preset sending duration and a preset sending interval time; obtaining available card parameters and effective antenna units at the current moment; sending data to be sent through an effective antenna unit at the current moment according to a preset sending time sequence and available card parameters at the current moment; if the duration of data transmission reaches the preset transmission duration, stopping signal transmission; judging whether the waiting time reaches a preset sending interval time or not; and if the waiting time reaches the preset sending interval time, acquiring the next available card parameter, and transmitting the signal again.

Therefore, the communication control method provided by the embodiment of the invention controls a near space communication control system for an aircraft, the communication control system is provided with a first antenna unit and a second antenna unit which are fixedly oriented in different directions, a communication terminal is arranged to be in communication connection with the first antenna unit and the second antenna unit, the receiving and sending stability of communication signals during the adjustment of the flight attitude of the aircraft is ensured, the high dynamic adaptability of the system is improved, the communication terminal adopts a signal processing module to modulate or demodulate the communication signals, adopts a communication control module to receive control instructions and data to be sent, controls a multi-card management module to control a plurality of receiving and sending channels to receive the communication signals or send the data to be sent according to a preset time slot multiplexing strategy, the sending frequency of the communication signals is improved, the data transmission effect is improved, and the modules of the system are designed in an integrated manner, the size, power consumption and weight of the power amplifying device are reduced, and the carrying cost is saved.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (9)

1. A near space communication control system for an aircraft, the aircraft including a power supply system, an aircraft control system, and a communication control system, the power supply system for supplying power to the communication control system, the aircraft control system and the communication control system for data interaction, the communication control system comprising: first antenna element and second antenna element fixed towards different directions to reach communication terminal machine, communication terminal machine includes:

the signal processing module is used for receiving first preset frequency band communication signals captured by the first antenna unit and the second antenna unit and sending second preset frequency band communication signals to the first antenna unit and the second antenna unit;

the multi-card management module is used for controlling the plurality of transceiving channels to execute the receiving of communication signals or the transmitting of data to be transmitted according to a preset transmitting time sequence;

the storage module is used for storing the first preset frequency band communication signal and data to be sent;

the communication control module is respectively and electrically connected with the multi-card management module, the storage module and the aircraft control system, and is used for acquiring a communication control instruction sent by the aircraft control system, judging the validity of the communication control instruction, controlling the multi-card management module to receive a communication signal or transmit data to be transmitted according to the communication control instruction, acquiring state data of a terminal and sending the state data to the aircraft control system;

wherein, the multi-card management module comprises: the system comprises a card number storage unit, a sending cache unit, a receiving cache unit, a sending time sequence control unit, a receiving time sequence control unit, a satellite selection unit and a card number management unit, wherein the card number storage unit is used for storing card parameters of a plurality of virtual cards, and the card parameters comprise user identification card numbers, an encryption algorithm and a storage space;

the receiving cache unit is provided with a plurality of receiving channels, the receiving channels are in communication connection with the signal processing module, and the receiving channels are used for receiving and caching the first preset frequency band communication signals;

the receiving time sequence control unit is used for controlling the receiving time sequence of each receiving channel and sending the communication signals received by the receiving channels to the satellite selection unit;

the satellite selection unit is used for acquiring channel states and channel signal-to-noise ratios of the plurality of receiving channels, determining available satellite numbers according to the channel signal-to-noise ratios, and sending the available satellite numbers of the satellites to the card number management unit from high to low according to the sequence of the signal-to-noise ratios;

the card number management unit is used for determining an available virtual card according to the available satellite number and sending available card parameters to the sending time sequence control unit according to a preset rule;

the sending cache unit is provided with a plurality of sending channels, the sending channels are in communication connection with the signal processing module, and the sending channels are used for receiving and caching data to be sent and sending the data to be sent through the corresponding sending channels after receiving a data sending control instruction;

the sending cache unit preferentially selects an available satellite with a high signal-to-noise ratio to send the data to be sent through a corresponding sending channel;

and the sending time sequence control unit is used for determining an available sending channel according to the available card parameters, controlling the sending time sequence of the available sending channel and sending data to be sent through the available sending channel, wherein the sending time sequence comprises single data sending duration and adjacent two-time data sending interval time.

2. The close proximity space communication control system for an aircraft according to claim 1, wherein the communication control module is configured to process command data, status data and data to be transmitted, the communication control module comprising: the device comprises an instruction control unit, an instruction execution unit, a state detection unit and a to-be-sent data management unit;

the instruction control unit is used for receiving the communication control instruction, judging the effectiveness of the communication control instruction and controlling the instruction execution unit to work according to the communication control instruction, wherein the communication control instruction comprises a data sending control instruction, a power on/off control instruction, a reset control instruction, an upper injection control instruction and a data interaction control instruction;

the instruction execution unit is used for managing and executing the communication control instruction;

the state detection unit is used for detecting the state of the terminal in the communication process in real time and sending the state data of the terminal to the aircraft control system, wherein the state of the terminal comprises a working state, a reset state, an upper injection state and a sending state;

and the data to be sent management unit is used for receiving the data sending control instruction and storing or sending the data to be sent by the aircraft control system.

3. The near space communication control system for an aircraft according to claim 2, wherein the data to be transmitted management unit is further configured to determine whether an available communication satellite exists, and if the available communication satellite exists, the data to be transmitted management unit transmits the data to be transmitted to the multi-card management module; otherwise, the to-be-sent data management unit stores the to-be-sent data to the storage module.

4. The proximity space communication control system for an aircraft according to any one of claims 1 to 3, wherein the signal processing module includes: the dual-channel signal receiving module is used for acquiring a first preset frequency band communication signal received by the first antenna unit and/or the second antenna unit and carrying out filtering, frequency conversion and demodulation processing on the first preset frequency band communication signal; the dual-channel signal transmitting module is used for modulating, frequency-converting and filtering data to be transmitted to obtain a second preset frequency band communication signal and transmitting the second preset frequency band communication signal to the first antenna unit or the second antenna unit; the signal processing control unit is used for providing control signals for the dual-channel signal receiving module and the dual-channel signal sending module, receiving a first preset frequency band communication signal and sending data to be sent to the dual-channel signal sending module.

5. The proximity space communication control system for an aircraft according to any one of claims 1 to 3, wherein the communication terminal further includes: and the power supply management module is used for carrying out voltage conversion on the power supply voltage of the power supply system, carrying out power-on/power-off control on the communication terminal and monitoring the voltage and the current.

6. The close space communication control system for an aircraft according to claim 1 or 2, wherein the communication terminal further includes: and the interface module is used for realizing data interaction between the communication control module and the aircraft control system, decoding the communication control instruction and encoding the state data of the terminal.

7. An aircraft, characterized in that it comprises: the proximity space communication control system for an aircraft of any one of claims 1-6.

8. A near space communication control method for an aircraft, for controlling the communication control system of any one of claims 1 to 6, the communication control system including a multi-card management module and a storage module, the control method comprising the steps of:

acquiring a communication control instruction;

carrying out validity judgment on the communication control instruction;

if the communication control instruction is valid, controlling the multi-card management module to receive communication signals or transmit data to be transmitted according to a preset transmission time sequence;

and acquiring the state data of the terminal machine, and monitoring the communication control system according to the state data.

9. The close space communication control method for an aircraft according to claim 8, characterized by further comprising the steps of:

judging whether an available communication satellite exists or not;

if the available communication satellite exists, the data to be sent is sent to the multi-card management module;

otherwise, the data to be sent is sent to the storage module for storage.

Images