CN112969156A - Unmanned aerial vehicle, communication method, command control station, information sheet receiving station and reconnaissance system - Google Patents

Unmanned aerial vehicle, communication method, command control station, information sheet receiving station and reconnaissance system Download PDF

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Publication number
CN112969156A
CN112969156A CN202110135204.6A CN202110135204A CN112969156A CN 112969156 A CN112969156 A CN 112969156A CN 202110135204 A CN202110135204 A CN 202110135204A CN 112969156 A CN112969156 A CN 112969156A
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band
unmanned aerial
aerial vehicle
information
communication link
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CN112969156B (en
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徐福红
陈柄孚
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Beijing Northern Sky Long Hawk Uav Technology Co ltd
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Beijing Northern Sky Long Hawk Uav Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Abstract

The invention provides an unmanned aerial vehicle for information transmission, a communication method, a command control station, an information sheet receiving station and a reconnaissance system. Between unmanned aerial vehicle and command control station, utilize the redundant reliability that has promoted the system of frequency channel. Between the unmanned aerial vehicle and the command control station, a U-band communication link is quickly established through the omnidirectional antenna in the initial stage, then the communication link is upgraded to a C-band communication link capable of meeting the requirement of large data volume transmission, and the requirement of rapidness of link establishment in the early stage and the requirement of large bandwidth in the later stage are both considered. For an information single receiving station, a communication link is quickly established through an omnidirectional antenna at the initial stage, the communication link is utilized to receive the azimuth information of an unmanned aerial vehicle, the azimuth information is utilized to adjust the orientation and the pitching angle of a directional antenna, the directional antenna is utilized to optimize the communication link, and the transmission of large data volume is realized. The advantages enable the invention to have wide application prospect in both military and civil fields.

Description

Unmanned aerial vehicle, communication method, command control station, information sheet receiving station and reconnaissance system
Technical Field
The invention relates to the field of unmanned aerial vehicle communication in the wireless communication industry, in particular to an unmanned aerial vehicle for information transmission, a communication method, a command control station, an information sheet receiving station and a reconnaissance system.
Background
An unmanned aircraft, abbreviated as "drone", and abbreviated in english as "UAV", is an unmanned aircraft that is operated by a radio remote control device and a self-contained program control device, or is operated autonomously, either completely or intermittently, by an onboard computer. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In the civil aspect, the unmanned aerial vehicle + the industry application is really just needed by the unmanned aerial vehicle; at present, the unmanned aerial vehicle is applied to the fields of aerial photography, agriculture, plant protection, miniature self-timer, express transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, romantic manufacturing and the like, and the application of the unmanned aerial vehicle is greatly expanded.
However, in the process of implementing the present invention, the applicant finds that the data transmission reliability between the drone and the command control station is poor, and in the case of interference, a channel through which the drone obtains a control signal of the command control station may be blocked, and the drone may be disconnected or hijacked by an enemy, thereby causing unpredictable risks.
Disclosure of Invention
Technical problem to be solved
The present invention is intended to solve at least one of the above technical problems at least in part.
(II) technical scheme
To achieve the above object, according to a first aspect of the present invention, there is provided a drone. This unmanned aerial vehicle includes: the U-band antenna and the U-band airborne communication module are used for establishing a U-band communication link between the unmanned aerial vehicle and the command control station; the C-band antenna and the C-band airborne communication module are used for establishing a first C-band communication link between the unmanned aerial vehicle and the command control station; and the flight control and task management module is used for communicating between the unmanned aerial vehicle and the command control station through the U-band communication link and/or the first C-band communication link.
In some embodiments of the present invention, the U-band antenna is a U-band omni-directional antenna, and the C-band antenna is a C-band omni-directional antenna; flight control and task management module still are used for: through U wave band communication link, send unmanned aerial vehicle's position information to command control station, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; receiving a communication link switching instruction for switching the U-band communication to the C-band communication from the command control station through the U-band communication link; switching the U-band communication between the unmanned aerial vehicle and the command control station to C-band communication according to the communication link switching instruction; and sending downlink information to the command control station through the first C-band communication link.
In some embodiments of the invention, the C-band antenna and the C-band airborne communication module are further configured to establish a second C-band communication link between the drone and the information gathering station; flight control and task management module still are used for: through second C wave band communication link, send unmanned aerial vehicle's position information to information list receiving station, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; and sending downlink information to the information receiving station through a second C wave band communication link.
In some embodiments of the invention, the drone further comprises: the steering engine control module is used for controlling the flight of the unmanned aerial vehicle; the information integration module is used for integrating the information; flight control and task management module still are used for: receiving remote control information from a command control station, and controlling a steering engine control module according to the remote control information; integrating the information through the information integration module; and generating downlink information according to the intelligence information and/or the telemetering information.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a drone communication method applied to a drone. The unmanned aerial vehicle communication method comprises the following steps: establishing a U-band communication link between the unmanned aerial vehicle and a command control station; through U wave band communication link, send unmanned aerial vehicle's position information to command control station, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; receiving a communication link switching instruction for switching the U-band communication to the C-band communication from the command control station through the U-band communication link; according to the communication link switching instruction, a first C-band communication link between the unmanned aerial vehicle and the command control station is established, and U-band communication between the unmanned aerial vehicle and the command control station is switched to C-band communication; and sending downlink information to the command control station through the first C-band communication link.
To achieve the above object, according to a third aspect of the present invention, there is provided a command control station. The command control station comprises: the U-band antenna and the U-band communication module are used for establishing a U-band communication link between the command control station and the unmanned aerial vehicle; the C-band antenna and the C-band communication module are used for establishing a first C-band communication link between the command control station and the unmanned aerial vehicle; and the control module is used for communicating between the command control station and the unmanned aerial vehicle through the U-band communication link and/or the first C-band communication link.
In some embodiments of the present invention, the U-band antenna is a U-band omni-directional antenna, and the C-band antenna is a C-band directional antenna; the control module is further configured to: through U wave band communication link, receive the position information that comes from unmanned aerial vehicle, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; according to the azimuth information, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle; sending a communication link switching instruction for switching the U-band communication to the C-band communication to the unmanned aerial vehicle through the U-band communication link; establishing a first C-band communication link between the command control station and the unmanned aerial vehicle, and switching U-band communication between the command control station and the unmanned aerial vehicle into C-band communication; and receiving downlink information from the unmanned aerial vehicle through the first C-band communication link.
In order to achieve the above object, according to a fourth aspect of the present invention, there is also provided a drone communication method applied to a command control station. The unmanned aerial vehicle communication method comprises the following steps: establishing a U-band communication link between a command control station and the unmanned aerial vehicle; through U wave band communication link, receive the position information that comes from unmanned aerial vehicle, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; according to the azimuth information, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle; sending a communication link switching instruction for switching the U-band communication to the C-band communication to the unmanned aerial vehicle through the U-band communication link; establishing a first C-band communication link between the command control station and the unmanned aerial vehicle, and switching U-band communication between the command control station and the unmanned aerial vehicle into C-band communication; and receiving downlink information from the unmanned aerial vehicle through the first C-band communication link.
In order to achieve the above object, according to a fifth aspect of the present invention, there is also provided an information sheet receiving station. The information sheet receiving station includes: the control module is used for selecting a C-band omnidirectional antenna or a C-band directional antenna of the information single receiving station as a receiving and transmitting antenna of the C-band communication terminal; the C-band communication terminal is used for establishing a second C-band communication link between the information acquiring station and the unmanned aerial vehicle through the selected transceiving antenna; the control module is also used for communicating between the information acquiring station and the unmanned aerial vehicle through a second C-band communication link; wherein, unmanned aerial vehicle is as above unmanned aerial vehicle.
In some embodiments of the invention, the control module is further configured to: selecting a C-band omnidirectional antenna as a receiving and transmitting antenna of a C-band communication terminal, and establishing a second C-band communication link; receiving, via a second C-band communication link, position information from the drone, the position information including: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; according to the azimuth information, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle; selecting a C-band directional antenna as a transceiving antenna of a C-band communication terminal, and maintaining a second C-band communication link; and receiving downlink information from the unmanned aerial vehicle through a second C-band communication link.
In order to achieve the above object, according to a sixth aspect of the present invention, there is also provided a reconnaissance system. The reconnaissance system comprises: an unmanned aerial vehicle as above; a command control station as above; and an intelligence gathering station as above.
(III) advantageous effects
According to the technical scheme, the invention has at least one of the following beneficial effects:
(1) unmanned aerial vehicle includes: the U-band communication system comprises a U-band antenna supporting U-band communication and a U-band airborne communication module; support C wave band antenna and C wave band machine-mounted communication module of C wave band communication. The command control station comprises: the U-band antenna and the U-band communication module support U-band communication; a C-band antenna supporting C-band communication and a C-band communication module.
Unmanned aerial vehicle and command control station all have two sets of communication system, both can utilize U wave band communication between the two, also can use C wave band communication. Under the condition that the signal of the current working frequency band is poor or is interfered by an enemy, the other frequency band can be switched to carry out communication, and the reliability of the system is improved by utilizing frequency band redundancy. In addition, one frequency band can be used for communication, and the other frequency band is camouflaged and shielded, so that interference and hijacking of enemies can be effectively prevented, and the operational capacity and the survival capacity of the unmanned aerial vehicle are improved.
(2) In the unmanned aerial vehicle, the U-band antenna is a U-band omnidirectional antenna, and the C-band antenna is a C-band omnidirectional antenna. In the command control station, the U-band antenna is a U-band omnidirectional antenna, and the C-band antenna is a rotatable C-band directional antenna. The command control station further comprises: and the control module is used for controlling the C-band directional antenna to face the pitching angle so as to align the C-band directional antenna with the unmanned aerial vehicle.
In the initial stage, the command control station and the unmanned aerial vehicle establish a line-of-sight communication U-band communication link through respective U-band omnidirectional antennas and utilize the line-of-sight communication U-band communication link to carry out initial small data volume communication, and the command control station and the unmanned aerial vehicle have the advantages of being simple and convenient to establish the link and being fast.
When large data volume transmission is needed in a subsequent stage, the unmanned aerial vehicle sends the orientation information of the unmanned aerial vehicle to the command control station through the U-band communication link, the control module adjusts the orientation and the pitching angle of the C-band directional antenna through the orientation information to aim at the unmanned aerial vehicle, and sends a control instruction to the unmanned aerial vehicle through the U-band communication link, so that the unmanned aerial vehicle opens the C-band airborne communication module, and a first C-band communication link is established between the unmanned aerial vehicle and the command control station and is used for communication. First C wave band communication link communication has the directionality and is strong, and the distance of action is far away, the high advantage of data transmission rate, can a large amount of transmission data to unmanned aerial vehicle's information and telemetering measurement information can be transmitted to command control station and information list receiving station in the short time, have promoted the ageing of information greatly.
(3) The information sheet receiving station includes: a control module; the system comprises a C-band omnidirectional antenna supporting C-band communication, a C-band directional antenna and a C-band communication terminal. The control module selects one of the C-band omnidirectional antenna and the C-band directional antenna as a transceiving antenna of the C-band communication terminal.
At the initial stage, the control module selects the C wave band omnidirectional antenna as the receiving and sending antenna of the information single receiving station, a second C wave band communication link between the information single receiving station and the unmanned aerial vehicle is established, then the unmanned aerial vehicle sends the azimuth information of the unmanned aerial vehicle to the information single receiving station, the control module adjusts the orientation and the pitching angle of the C wave band directional antenna by utilizing the azimuth information so as to align the C wave band directional antenna to the unmanned aerial vehicle, the C wave band directional antenna is further utilized to replace the C wave band omnidirectional antenna, the second C wave band communication link between the information single receiving station and the unmanned aerial vehicle is maintained, and the second C wave band communication link is utilized to receive the downlink information of the unmanned aerial vehicle.
In the conventional technology, the information collection station needs to visually align the directional antenna with the unmanned aerial vehicle to establish an effective communication link, so that the defects of large influence of weather conditions and low precision in the conventional technology can be overcome through the scheme, and the effective communication link can be established in a short time. In addition, two antennas share the receiving terminal, compared with the traditional information single receiving station, only one antenna is added, the size and the weight are not obviously increased, and the practical combat requirement is met.
Drawings
Fig. 1 is a schematic diagram of a reconnaissance system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention.
Fig. 3 is a flowchart of a communication method of the drone executed by the flight control and task management module in the drone shown in fig. 2.
Fig. 4 is a schematic structural diagram of a command control station according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for drone communication performed by the control module in the command control station shown in fig. 4.
Fig. 6 is a schematic structural diagram of an information receiving station according to an embodiment of the present invention.
FIG. 7 is a flowchart of the control logic executed by the control module in the information gathering station shown in FIG. 6.
Detailed Description
The invention provides an unmanned aerial vehicle for information transmission, a communication method, a command control station, an information sheet receiving station and a reconnaissance system, which utilize frequency band redundancy to improve the reliability of the system, and achieve the effects of rapid link establishment and high data transmission efficiency through link adjustment.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that although the following embodiments are described in terms of military applications, those skilled in the art will appreciate that the present invention is equally applicable to civil disaster relief, aerial surveying and mapping, mineral exploration, and the like.
First, reconnaissance system
First, the present invention provides a reconnaissance system.
Fig. 1 is a schematic diagram of a reconnaissance system according to an embodiment of the present invention. As shown in fig. 1, the reconnaissance system includes: unmanned aerial vehicle, command control station, information sheet receiving station. Wherein:
1. unmanned aerial vehicle includes: a flight control and task management module; the U-band omnidirectional antenna and the U-band airborne communication module support U-band communication; support C wave band omnidirectional antenna and C wave band machine-carried communication module of C wave band communication.
2. The command control station comprises: a control module; the U-band omnidirectional antenna and the U-band communication module support U-band communication; the C-band directional antenna and the C-band communication module support C-band communication.
3. The information sheet receiving station includes: a control module; the system comprises a C-band omnidirectional antenna supporting C-band communication, a C-band directional antenna and a C-band communication terminal. The control module selects one of the C-band omnidirectional antenna and the C-band directional antenna as a transceiving antenna of the C-band communication terminal.
Based on the above, the communication of the reconnaissance system of the embodiment mainly occurs between the unmanned aerial vehicle and the command control station and between the unmanned aerial vehicle and the information collection station.
1. For communication between unmanned aerial vehicle and command control station
Unmanned aerial vehicle and command control station all have two sets of communication system, and under the relatively poor or condition that receives enemy's interference of current working frequency channel signal, can switch another frequency channel and communicate, utilize the frequency channel redundancy to promote the reliability of system. In addition, one frequency band can be used for communication, and the other frequency band is camouflaged and shielded, so that interference and hijacking of enemies are prevented, and the survival capability and the operational capability of the unmanned aerial vehicle are improved.
In addition, in order to solve the problem of difficulty in establishing a communication link, in an initial stage, the command control station and the unmanned aerial vehicle establish a line-of-sight communication U-band communication link through respective U-band omnidirectional antennas and utilize the line-of-sight communication U-band communication link to carry out initial communication, and the method has the advantages of simplicity and convenience in link establishment, rapidness and high efficiency. When large data volume transmission is needed in a subsequent stage, the unmanned aerial vehicle sends the azimuth information of the unmanned aerial vehicle to the command control station through the U-waveband communication link. The angle of C wave band directional antenna is adjusted through above-mentioned position information to command control station's control module group, opens C wave band communication module to utilize U wave band communication link to send the communication link switching instruction that is used for switching to C wave band communication with U wave band communication to unmanned aerial vehicle, make unmanned aerial vehicle open C wave band airborne communication module, establish C wave band communication link and utilize it to communicate between command control station and unmanned aerial vehicle. C wave band communication link communication has the directionality and is strong, and the operating distance is far away, the high advantage of data transmission rate, can transmit data in a large number to unmanned aerial vehicle's information and telemetering measurement information can be transmitted in the short time and accomplish, have promoted the ageing of information greatly.
2. For communication between unmanned aerial vehicle and information collection station
At the initial stage, the control module group control C wave band communication module group of information list receiving station utilizes C wave band omnidirectional antenna and unmanned aerial vehicle to establish C wave band communication link, and then unmanned aerial vehicle sends unmanned aerial vehicle's position information to information list receiving station through C wave band communication link, and the control module group of information list receiving station utilizes orientation and the every single move angle of above-mentioned position information adjustment C wave band directional antenna so that it aims at unmanned aerial vehicle, and then utilizes C wave band directional antenna and unmanned aerial vehicle to establish C wave band communication link.
Can overcome information list receiving station and visually aim at unmanned aerial vehicle through above-mentioned scheme and receive weather condition influence big, the defect that the precision is low, in addition, two antennas share same C wave band communication terminal, compare in traditional information list receiving station and only increased an antenna, volume and weight have not obviously increased, have adapted to the actual combat demand.
Second, unmanned plane
Secondly, the invention also provides the unmanned aerial vehicle. The unmanned aerial vehicle can quickly establish a line-of-sight U-waveband communication link with a command control station, and can establish and switch to a line-of-sight C-waveband communication link with a large bandwidth when large data volume transmission is needed.
Fig. 2 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention. As shown in fig. 2, the unmanned aerial vehicle of the present embodiment includes:
and the steering engine control module is used for controlling the flight of the unmanned aerial vehicle.
The information integration module is used for collecting information;
the U-band omnidirectional antenna and the U-band airborne communication module support U-band communication;
the C-band omnidirectional antenna and the C-band airborne communication module support C-band communication;
and the flight control and task management module is used for controlling the modules.
Specifically, to unmanned aerial vehicle and command control station both, flight control and task management module are used for: firstly, a U-band communication link between an unmanned aerial vehicle and a command control station is established by using a U-band omnidirectional antenna and a U-band airborne communication module in a first stage, and azimuth information of the unmanned aerial vehicle is sent to the command control station through the U-band communication link; and secondly, receiving a communication link switching instruction from the command control station through the U-band communication link in a second stage needing large data volume transmission, establishing a first C-band communication link with the command control station by using the C-band omnidirectional antenna and the C-band airborne communication module, switching the communication between the unmanned aerial vehicle and the command control station from the U-band communication to the C-band communication, and transmitting downlink information by using the first C-band communication link.
Wherein, unmanned aerial vehicle's position information includes: and longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located. The downlink information includes: intelligence information and/or telemetry information. Wherein, unmanned aerial vehicle's azimuth information's data volume is little, utilizes U wave band communication link transmission comparatively suitable. The downlink information has a large data volume and is not suitable for transmission by a U-band communication link, and the downlink information is suitable for transmission by a C-band communication link.
In the initial stage, the command control station and the unmanned aerial vehicle establish a line-of-sight communication U-band communication link through respective U-band omnidirectional antennas and utilize the line-of-sight communication U-band communication link to carry out initial communication, and the method has the advantages of simplicity and convenience in link establishment, rapidness and high efficiency. And when large data volume transmission is needed in the subsequent stage, establishing a first C-band communication link and utilizing the first C-band communication link for communication. The first C-band communication link has the advantages of strong directivity, long acting distance and high data transmission rate. Therefore, the effects of simple and convenient link establishment, rapidness and high data transmission efficiency are achieved through link adjustment.
It should be noted that, in this embodiment, the above setting is adopted in order to shorten the time for establishing the communication link and improve the scenario of the system bandwidth in the downlink information transmission phase, but if the setting is adapted to other purposes, the setting may also be flexibly adjusted. For example:
(1) in the second stage, the first C-band communication link is hijacked/interfered by an enemy or has a sign of being hijacked/interfered, and under the condition, the flight control and task management module in the unmanned aerial vehicle can automatically establish and switch to the U-band communication link, report to the command control station and request for indication.
(2) In the second stage, a first C-band communication link and a U-band communication link are simultaneously established, wherein one of the first C-band communication link and the U-band communication link is used as a real communication link, and the other one of the first C-band communication link and the U-band communication link is used for confusing an enemy, so that the difficulty of the enemy in cracking signals or interfering/hijacking is increased.
In addition, it should be noted that, in order to implement fast establishment of a communication link and transmission of large data amount downlink information, a U-band omnidirectional antenna and a C-band omnidirectional antenna are used in this embodiment, but if only frequency band redundancy is implemented, a U-band directional antenna and a C-band directional antenna may also be used in the present invention.
In this embodiment, to steering wheel control module and information integration module, flight control still is used for with task management module: receiving remote control information from a command control station, and controlling a steering engine control module according to the remote control information so as to control the unmanned aerial vehicle to fly and execute tasks; the scheduling information integration module integrates the information; the intelligence information and/or telemetry information is encapsulated as downstream information.
The following description continues on the application of the drone in the scenario of the present embodiment.
1. For unmanned aerial vehicle and command control station
1.1 reception of remote control information
Flight control and task management module still are used for: and receiving remote control information from a command control station, and controlling the steering engine control module according to the remote control information so as to control the unmanned aerial vehicle to fly and execute tasks.
In the first stage, before flying to a target area to conduct reconnaissance, the flight control and task management module receives remote control information through a U-band communication link; in the second stage, specifically, in the reconnaissance stage of reconnaissance in the current area, the flight control and task management module receives the remote control information through the first C-band communication link.
1.2 Transmission of Downlink information
In the reconnaissance stage, the flight control and task management module of the unmanned aerial vehicle can generate downlink information according to the detected information and the telemetering information such as the track and the attitude of the unmanned aerial vehicle. The data size of the downlink information is much larger than that of the direction information and the remote control information.
For the downlink information, the flight control and task management module is further configured to: in the second stage, specifically, in the reconnaissance stage of reconnaissance in the current area, the flight control and task management module sends the downlink information to the command control station through the first C-band communication link.
2. For unmanned aerial vehicle and information sheet receiving station
In this embodiment, the unmanned aerial vehicle also needs to send downlink information to the information sheet receiving station. Flight control and task management module are used for: and in the second stage, particularly in the reconnaissance stage of reconnaissance in the current area, the flight control and task management module sends downlink information to the information single receiving station through the second C-band communication link.
The control logic executed by the flight control and task management module in the unmanned aerial vehicle is given below to realize the above functions. After the unmanned aerial vehicle is electrified, the flight control and task management module is started.
Fig. 3 is a flowchart of a communication method of the drone executed by the flight control and task management module in the drone shown in fig. 2. As shown in fig. 3, the unmanned aerial vehicle communication method executed by the flight control and task management module includes:
step S302, a U-band communication link between the unmanned aerial vehicle and the command control station is established;
wherein, the step S302 further includes:
substep S302a, starting the U-band airborne communication module;
substep S302b, receiving a U-band communication link establishment request from a command control station;
substep S302c, carrying out identity verification on the command control station;
substep S302d, sending a U-waveband communication link establishment response to the command control station under the condition that the identity authentication is passed, and establishing a U-waveband communication link between the unmanned aerial vehicle and the command control station;
the U-band communication link establishment request is received through the U-band airborne communication module, and the U-band communication link establishment response is also sent through the U-band airborne communication module;
in addition, through this U wave band communication link, unmanned aerial vehicle can send down information to command control station, and command control station also can send remote control information etc. to unmanned aerial vehicle. The data transmission rate is limited only by the characteristics of the U-band itself.
Step S304, the direction information of the unmanned aerial vehicle is sent to a command control station through a U-band communication link;
the orientation information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located. And the command control station adjusts the orientation and the pitching angle of the C-band directional antenna according to the azimuth information so as to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle, so that preparation is made for establishing a C-band communication link of the unmanned aerial vehicle and the command control station.
Step S306, receiving a communication link switching instruction from a command control station through a U-waveband communication link;
step S308, according to the communication link switching instruction, a first C-band communication link between the unmanned aerial vehicle and the command control station is established, and a U-band communication link is switched to the C-band communication link;
wherein, the step S308 further comprises:
substep S308a, starting the C-band airborne communication module;
in this embodiment, C wave band airborne communication module is initially in the closed condition, then opens before establishing C wave band communication link, and its purpose is to save unmanned aerial vehicle's power consumption. When this factor is not taken into account, the C-band on-board communication module may also be initially in an on state.
A substep S308b of receiving a C-band communication link establishment request from the command control station;
substep S308c, performing identity verification on the command control station;
substep S308d, sending a C-band communication link establishment response to the command control station under the condition that the identity authentication is passed, and establishing a first C-band communication link between the unmanned aerial vehicle and the command control station;
and a substep S308e, switching the U-band communication link to the C-band communication link, and closing the U-band airborne communication module.
Close U wave band machine and carry communication module, mainly be based on the purpose of saving unmanned aerial vehicle electric power. After the first C-band communication link between the unmanned aerial vehicle and the command control station is established, the U-band airborne communication module is closed, so that the condition that link establishment fails due to abnormity in the C-band communication link establishment process is prevented, namely if the C-band communication link is established unsuccessfully, the unmanned aerial vehicle can still communicate with the command control station by means of the U-band communication link and report abnormal conditions.
Step S310, receiving remote control information from a command control station through a first C-band communication link;
wherein, the remote control information refers to the information for controlling the flight and executing the task of the unmanned aerial vehicle.
Step S312, controlling the steering engine control module according to the remote control information;
the flight control and task management module controls the steering engine control module according to the remote control information, and then controls the unmanned aerial vehicle to fly and execute tasks.
Step S314, the scheduling information integration module integrates the information and generates downlink information according to the integrated information and the telemetering information such as the track and the posture of the scheduling information integration module;
in other words, the downstream information is encapsulated with informative information and telemetry information. Of course, in other embodiments of the present invention, the downlink information may be only encapsulated with the intelligence information; or the downlink information is only packaged with the telemetering information, but the common characteristic is that the data volume is much larger than that of remote control information and the like, and a communication link with large bandwidth is required for transmission.
Step S316, sending downlink information to the command control station through the first C-band communication link;
step S318, establishing a second C-band communication link between the unmanned aerial vehicle and the information acquiring station;
the establishment process of the second C-band communication link between the unmanned aerial vehicle and the information acquisition station is similar to the establishment process of the C-band communication link between the unmanned aerial vehicle and the command control station, and the details are not repeated here.
Step S320, the direction information of the unmanned aerial vehicle is sent to an information receiving station through a second C wave band communication link;
step S322, sending the downlink information to the information receiving station through the second C wave band communication link.
It should be noted that steps S310 to S316 are the communication process between the drone and the command control station, and steps S318 to S322 are the communication process between the drone and the information sheet receiving station, and there is no front-back order relationship between the two, and the order can be adjusted, or the order can be crossed, and the implementation of the present invention is not affected.
About this embodiment, at first, unmanned aerial vehicle has two sets of communication systems of U wave band and C wave band, and under the relatively poor or condition that receives enemy's interference of current working frequency channel signal, can switch another frequency channel and communicate, utilize the frequency channel redundancy to promote the reliability of system, prevent enemy's interference and hijack, promoted unmanned aerial vehicle's viability and operational capability. Secondly, the U-band communication is adopted in the initial stage, so that the advantages of simplicity, convenience, rapidness and high efficiency are achieved in link establishment, and then the C-band communication is adopted, so that the advantages of large bandwidth and high data transmission rate are achieved, and the transmission of downlink information with large data volume is facilitated.
Third, command control station
The invention further provides a command control station. The volume of the command control station is large. Generally, the ground command control station has a special information processing module, and the information processing mode has a real-time mode and a non-real-time mode. The command control station is typically located on the ground or on a ground moving vehicle, such as a heavy truck, but could equally be located on an electronic warplane or vessel.
Fig. 4 is a schematic structural diagram of a command control station according to an embodiment of the present invention. As shown in fig. 4, the command control station of the present embodiment includes:
a control module;
the U-band omnidirectional antenna and the U-band communication module support U-band communication;
the C-band directional antenna and the C-band communication module support C-band communication.
In this embodiment, the control module is configured to: firstly, in a first stage, a U-band communication link is established with an unmanned aerial vehicle by using a U-band omnidirectional antenna and a U-band communication module, and azimuth information of the unmanned aerial vehicle is received by using the U-band communication link; adjusting the orientation and the pitching angle of the C-band directional antenna according to the azimuth information so as to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle; the unmanned aerial vehicle is enabled to switch the U-band communication link to the C-band communication link through a communication link switching instruction sent by the U-band communication link; and secondly, establishing a first C-band communication link with the unmanned aerial vehicle by using the C-band directional antenna and the C-band communication module, and receiving downlink information by using the first C-band communication link.
1. Transmission of remote control information
The control module is further configured to: and sending the remote control information to the unmanned aerial vehicle. This remote control information will be used for controlling unmanned aerial vehicle flight position, gesture etc to and control unmanned aerial vehicle executive task.
In the first stage, specifically before flying to a target area to conduct reconnaissance, the control module sends remote control information through a U-band communication link; in the second stage, specifically, in the reconnaissance stage of reconnaissance in the current area, the control module sends the remote control information through the C-band communication link.
2. Reception of downlink information
As described above, in the reconnaissance phase, the unmanned aerial vehicle may generate downlink information according to the detected information and the telemetry information such as the track and the attitude of the unmanned aerial vehicle.
And at the command control station, the control module receives downlink information through the first C-band communication link.
The control logic that directs the control modules in the control station to perform the functions described above is given below.
Fig. 5 is a flowchart of a method for drone communication performed by the control module in the command control station shown in fig. 4. As shown in fig. 5, the drone communication method executed by the control module includes:
step S502, a U-band communication link between the command control station and the unmanned aerial vehicle is established;
the step S502 further includes:
substep S502a, searching for the unmanned aerial vehicle through the U-band communication module and the U-band omnidirectional antenna;
substep S502b, after finding the unmanned aerial vehicle, send the U wave band communication link to set up the request to the unmanned aerial vehicle;
substep S502c, accepting the identity verification of the unmanned aerial vehicle to the own party;
and a substep S502d of receiving a U-band communication link establishment response from the drone, and establishing a U-band communication link between the command control station and the drone.
Through this U wave band communication link, command control station can send remote control information etc. to unmanned aerial vehicle. And the unmanned aerial vehicle can also send downlink information to the command control station. Of course, the data transmission rate is limited due to the characteristics of the U-band itself.
Step S504, receiving the direction information of the unmanned aerial vehicle from the unmanned aerial vehicle through a U-waveband communication link;
the orientation information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located.
Step S506, according to the azimuth information of the unmanned aerial vehicle, the orientation and the pitching angle of the C-band directional antenna are adjusted to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle;
step S508, a communication link switching instruction is sent to the unmanned aerial vehicle through the U-band communication link, and the unmanned aerial vehicle is enabled to switch the U-band communication link to the C-band communication link;
step S510, a first C-band communication link between the command control station and the unmanned aerial vehicle is established, and a U-band communication link is switched to the first C-band communication link;
the step S510 further includes:
substep S510a, searching for the drone through the C-band directional antenna and the C-band communication module;
substep S510b, after finding the drone, sending a C-band communication link establishment request to the drone;
substep S510c, accepting the identity verification of the unmanned aerial vehicle to the own party;
substep S510d, receiving a C-band communication link establishment response from the drone, and establishing a first C-band communication link between the command control station and the drone;
sub-step S510e, switching the U-band communication link to the first C-band communication link.
And S512, sending remote control information to the unmanned aerial vehicle through the first C-band communication link, and receiving downlink information from the unmanned aerial vehicle.
Wherein, the remote control information refers to the information for controlling the flight and executing the task of the unmanned aerial vehicle. In addition, the unmanned aerial vehicle generates downlink information according to the detected information and telemetering information such as self track and attitude. And commanding the control station to receive the downlink information through the first C-band communication link.
Similarly, in this embodiment command control station, can communicate with unmanned aerial vehicle through two sets of communication system, can effectively prevent enemy's interference and hijack, promoted unmanned aerial vehicle ground viability and operational capability. In addition, the U-band communication link is adopted in the initial stage, so that the advantages of simplicity, convenience, rapidness and high efficiency are achieved in link establishment, and the C-band communication link is adopted, so that the data transmission rate is high, and the transmission of large-data-volume downlink information is facilitated.
Four, information list receiving station
Finally, the invention also provides an information sheet receiving station.
In this embodiment, the information single receiving station is the equipment that is carried by the individual soldier, and it can receive the down information including telemetering measurement information and information from unmanned aerial vehicle to obtain the information product after handling it and supply the individual soldier to fight and use. The information receiving station is small in size, light in weight, less than 20kg, highly integrated, flexible to operate and convenient for individual combat, and is also called as a portable information receiving station.
Fig. 6 is a schematic structural diagram of an information receiving station according to an embodiment of the present invention. As shown in fig. 6, the information acquiring station of the present embodiment includes: a control module; an information processing module; a display control module; the system comprises a C-band omnidirectional antenna supporting C-band communication, a C-band directional antenna and a C-band communication terminal. The control module is used for selecting one of the C-band omnidirectional antenna and the C-band directional antenna as a transceiving antenna of the C-band communication terminal. The C-band communication terminal is used for establishing a second C-band communication link between the information acquiring station and the unmanned aerial vehicle through the selected transceiving antenna. The control module is also used for communicating between the information acquiring station and the unmanned aerial vehicle through a second C-band communication link.
Specifically, the control module is configured to: selecting a C-band omnidirectional antenna as a receiving and transmitting antenna of the C-band communication terminal, and establishing a second C-band communication link; receiving the direction information of the unmanned aerial vehicle sent by the unmanned aerial vehicle through a second C-band communication link; according to the azimuth information, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle; selecting a C-band directional antenna as a transceiving antenna of a C-band communication terminal, and maintaining a second C-band communication link; through second C wave band communication link, receive unmanned aerial vehicle's down information, include in the down information: intelligence information and/or telemetry information.
Specifically, the C-band communication terminal includes: low noise amplifier, down converter, demodulation decryption unit. The low-noise amplifier and the down converter are respectively used for carrying out noise reduction and down conversion processing on the downlink information and outputting an intermediate frequency signal. And the demodulation decryption unit is used for demodulating and decrypting the intermediate frequency signal and analyzing the original data. The information processing module is used for processing the original data, and reducing the telemetering information and the information of the unmanned aerial vehicle to obtain an information product; the display control module is used for displaying the information product to the client.
The control logic executed by the control module in receipt of the statement is given below to implement the above functions.
FIG. 7 is a flowchart of the control logic executed by the control module in the information gathering station shown in FIG. 6. As shown in fig. 7, the control logic executed by the control module includes:
step S702, selecting a C-band omnidirectional antenna as a receiving and transmitting antenna of a C-band communication terminal;
step S704, a second C wave band communication link between the information sheet receiving station and the unmanned aerial vehicle is established;
the step S704 further includes:
substep S704a, searching for the drone through the C-band communication module and the C-band omnidirectional antenna;
substep S704b, after finding the drone, sending a C-band communication link establishment request to the drone;
substep S704c, accepting the identity verification of the unmanned aerial vehicle to the own party;
and a substep S704d of receiving the C-band communication link establishment response from the drone, and establishing a second C-band communication link between the informative ticker-receiving station and the drone.
Through this second C wave band communication link, unmanned aerial vehicle can send down information to information list receiving station. The data transmission rate is limited only by the characteristics of the omni-directional antenna itself.
Step S706, receiving the azimuth information from the unmanned aerial vehicle through a second C-band communication link;
the orientation information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located.
Step 708, according to the azimuth information of the unmanned aerial vehicle, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle;
step S710, selecting a C-band omnidirectional antenna as a receiving and transmitting antenna of a C-band communication terminal, and maintaining a second C-band communication link;
step S712, receiving downlink information from the drone through the second C-band communication link.
Wherein, the downlink information includes: the information that unmanned aerial vehicle detected and the telemetering information such as the orbit, the gesture of unmanned aerial vehicle itself.
The information acquiring station of the embodiment has the following characteristics:
1. high timeliness
Because this embodiment information list receiving station is direct to communicate with unmanned aerial vehicle, need not be with the help of other equipment transfer, transmission delay is little, can be directly transmit information to information list receiving station through unmanned aerial vehicle-information list receiving station stadia C wave band link within range at stadia working distance, provides real-time, effectual information for the individual soldier, and the timeliness is high.
2. The communication link has the advantages of fast establishment and large data transmission quantity
In this embodiment, a C-band communication link is established through the C-band omni-directional antenna, the orientation and the pitch angle of the C-band directional antenna are adjusted to align the C-band directional antenna to the unmanned aerial vehicle after receiving the azimuth information of the unmanned aerial vehicle, and the C-band directional antenna is adjusted to serve as an antenna of the C-band communication link. On one hand, a communication link can be established quickly, and on the other hand, a C-band communication link of the directional antenna can be utilized to transmit downlink information with large data volume.
3. The C-band communication terminal has strong signal processing function
In the embodiment, through noise reduction and down-conversion processing, the signal quality is greatly improved, and the timeliness of the information obtained by the first-line fighter is guaranteed.
So far, a plurality of embodiments of the present invention have been described in detail with reference to the accompanying drawings.
It should be noted that, although the present invention is described in the specification by being divided into four parts, namely, a reconnaissance system, an unmanned aerial vehicle, a command control station, and an information sheet receiving station, it is only for the sake of convenience. In fact, it will be understood by those skilled in the art that the technical features in the different parts are interrelated, and the technical contents of some parts are incorporated into the other three parts by reference.
It is noted that for some implementations, if not essential to the invention and well known to those of ordinary skill in the art, they are not illustrated in detail in the drawings or in the text of the description, as they may be understood with reference to the relevant prior art.
Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should clearly recognize that the unmanned aerial vehicle, the command control station, the information sheet receiving station, the reconnaissance system and the reconnaissance method of the present invention are applicable.
In summary, the present invention provides an unmanned aerial vehicle, a command control station, an information sheet receiving station, and a reconnaissance system related to information transmission. Firstly, between unmanned aerial vehicle and command control station, utilize the frequency channel redundancy to promote the reliability of system, promoted unmanned aerial vehicle's viability and operational capability. Secondly, a U-band communication link is quickly established between the unmanned aerial vehicle and the command control station through the omnidirectional antenna in the initial stage, then the link is adjusted and optimized, a C-band communication link is established, and the requirements of rapidness and bandwidth for establishing the link are met. Finally, for the information single receiving station, a communication link is quickly established through the omnidirectional antenna in the initial stage, the communication link is utilized to receive the orientation information of the unmanned aerial vehicle, the orientation and the pitching angle of the directional antenna are adjusted through the orientation information, and then the communication link is optimized into a communication link with large bandwidth through the directional antenna. The advantages enable the invention to have wide application prospect in both military and civil fields.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connecting" are to be interpreted broadly, and may be, for example, mechanical or electrical; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
Ordinal numbers such as "first," "second," "third," "primary," "secondary," and arabic numerals, letters, etc., used in the specification and claims to modify a corresponding element or step are intended only to distinguish one element (or step) having a certain name from another element (or step) having the same name, and do not imply any ordinal number for the element (or step) nor the order of one element (or step) from another element (or step).
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention, and the foregoing descriptions of specific languages are provided for purposes of disclosure as best modes of practicing the invention.
The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components in the associated apparatus according to embodiments of the invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
All modules of the embodiments of the present invention may be hardware structures, and physical implementations of hardware structures include, but are not limited to, physical devices, including, but not limited to, transistors, memristors, DNA computers.
Those skilled in the art will appreciate that the modules in the apparatus of an embodiment may be adaptively changed and disposed in one or more apparatuses other than the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component and, in addition, may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features of the invention in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so invented, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature of the invention in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, this invention should not be construed as reflecting the intent: the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention. Also, the technical features in the individual embodiments may be understood to be equally applicable in the individual embodiments.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An unmanned aerial vehicle, comprising:
the U-band antenna and the U-band airborne communication module are used for establishing a U-band communication link between the unmanned aerial vehicle and the command control station;
the C-band antenna and the C-band airborne communication module are used for establishing a first C-band communication link between the unmanned aerial vehicle and the command control station;
and the flight control and task management module is used for communicating between the unmanned aerial vehicle and the command control station through the U-band communication link and/or the first C-band communication link.
2. The drone of claim 1, wherein the U-band antenna is a U-band omni-directional antenna, and the C-band antenna is a C-band omni-directional antenna; the flight control and task management module is also used for:
sending the position information of the unmanned aerial vehicle to the command control station through the U-band communication link, wherein the position information comprises: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located;
receiving a communication link switching instruction for switching U-band communication to C-band communication from the command control station through the U-band communication link;
switching the U-band communication between the unmanned aerial vehicle and the command control station to C-band communication according to the communication link switching instruction;
and sending downlink information to the command control station through the first C-band communication link.
3. The drone of claim 1, wherein:
the C-band antenna and the C-band airborne communication module are also used for establishing a second C-band communication link between the unmanned aerial vehicle and the information acquiring station; the flight control and task management module is also used for: through the second C wave band communication link, to information list receiving station sends unmanned aerial vehicle's position information, the position information includes: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located; sending downlink information to an information single receiving station through the second C-band communication link; and/or
The unmanned aerial vehicle still includes: the steering engine control module is used for controlling the flight of the unmanned aerial vehicle; the information integration module is used for integrating the information; the flight control and task management module is also used for: receiving remote control information from the command control station, and controlling the steering engine control module according to the remote control information; integrating the information through the information integration module; and generating downlink information according to the intelligence information and/or the telemetering information.
4. A communication method of a unmanned aerial vehicle is used for the unmanned aerial vehicle, and is characterized by comprising the following steps:
establishing a U-band communication link between the unmanned aerial vehicle and a command control station;
sending the position information of the unmanned aerial vehicle to the command control station through the U-band communication link, wherein the position information comprises: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located;
receiving a communication link switching instruction for switching U-band communication to C-band communication from the command control station through the U-band communication link;
according to the communication link switching instruction, a first C-band communication link between the unmanned aerial vehicle and the command control station is established, and U-band communication between the unmanned aerial vehicle and the command control station is switched to C-band communication;
and sending downlink information to the command control station through the first C-band communication link.
5. A command control station, comprising:
the U-band antenna and the U-band communication module are used for establishing a U-band communication link between the command control station and the unmanned aerial vehicle;
the C-band antenna and the C-band communication module are used for establishing a first C-band communication link between the command control station and the unmanned aerial vehicle;
a control module configured to communicate between the command control station and the drone over the U-band communication link and/or the first C-band communication link.
6. The command control station of claim 5, wherein the U-band antenna is a U-band omni-directional antenna and the C-band antenna is a C-band directional antenna; the control module is further configured to:
receiving, over the U-band communication link, location information from the drone, the location information including: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located;
adjusting the orientation and the pitching angle of the C-band directional antenna to be aligned with the unmanned aerial vehicle according to the azimuth information;
sending a communication link switching instruction for switching the U-band communication to the C-band communication to the unmanned aerial vehicle through the U-band communication link;
establishing a first C-band communication link between the command control station and the unmanned aerial vehicle, and switching U-band communication between the command control station and the unmanned aerial vehicle into C-band communication;
and receiving downlink information from the unmanned aerial vehicle through the first C-band communication link.
7. An unmanned aerial vehicle communication method is applied to a command control station and is characterized by comprising the following steps:
establishing a U-band communication link between a command control station and the unmanned aerial vehicle;
receiving, over the U-band communication link, location information from the drone, the location information including: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located;
according to the azimuth information, adjusting the orientation and the pitching angle of the C-band directional antenna to enable the C-band directional antenna to be aligned with the unmanned aerial vehicle;
sending a communication link switching instruction for switching the U-band communication to the C-band communication to the unmanned aerial vehicle through the U-band communication link;
establishing a first C-band communication link between the command control station and the unmanned aerial vehicle, and switching U-band communication between the command control station and the unmanned aerial vehicle into C-band communication;
and receiving downlink information from the unmanned aerial vehicle through the first C-band communication link.
8. An information gathering station, comprising:
the control module is used for selecting a C-band omnidirectional antenna or a C-band directional antenna of the information single receiving station as a receiving and transmitting antenna of the C-band communication terminal;
the C-band communication terminal is used for establishing a second C-band communication link between the information acquiring station and the unmanned aerial vehicle through the selected transceiving antenna;
the control module is further configured to communicate between the intelligence gathering station and the drone over the second C-band communication link;
wherein the drone is a drone according to any one of claims 1 to 3.
9. The intelligence gathering station of claim 8, wherein the control module is further configured to:
selecting the C-band omnidirectional antenna as a receiving and transmitting antenna of the C-band communication terminal, and establishing the second C-band communication link;
receiving, over the second C-band communication link, position information from the drone, the position information including: longitude and latitude information and altitude information of the position where the unmanned aerial vehicle is located;
adjusting the orientation and the pitching angle of the C-band directional antenna to be aligned with the unmanned aerial vehicle according to the azimuth information;
selecting the C-band directional antenna as a transceiving antenna of the C-band communication terminal, and maintaining the second C-band communication link;
and receiving downlink information from the unmanned aerial vehicle through the second C-band communication link.
10. A reconnaissance system, comprising:
the drone of any one of claims 1 to 3;
a command control station according to claim 5 or 6; and
informative-ticketing station according to claim 8 or 9.
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