Airborne communication smart tracking antenna system

By using an intelligent tracking antenna system for aviation communications, combined with a high-gain directional antenna and an automatic servo system, the problem of omnidirectional antennas being susceptible to interference is solved, achieving high-quality flight communication and anti-interference capabilities, and ensuring the stability of the communication link.

CN116033453BActive Publication Date: 2026-01-30AIR FORCE COMM SERGEANT SCHOOL OF PLA
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Patent Information

Application Number
CN202211511289.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-29
Publication Date
2026-01-30
Estimated Expiration
2042-11-29

AI Technical Summary

Technical Problem

The existing airport flight control communication radios use omnidirectional antennas, which cause signal energy dispersion, making them susceptible to interference and affecting communication quality.

Method used

The system employs an intelligent tracking antenna system for aviation communication, combined with a high-gain directional antenna and an automatic servo system, to achieve target tracking and focused regional air-to-ground communication. By controlling the directional antenna through air traffic control situational awareness, the impact of electromagnetic interference is reduced.

Benefits of technology

It improves flight communication quality, enhances anti-interference capabilities, ensures communication link stability, and can quickly switch to local mode in the event of network interruption to ensure uninterrupted communication.

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Patent Text Reader

Abstract

This invention discloses an intelligent tracking antenna system for aviation communication, comprising a target matching control subsystem and an automatic servo antenna subsystem. The target matching control subsystem includes an air traffic control server and a control terminal. The air traffic control server enables interoperability with the aviation department's air traffic control information network. The control terminal is used for background map display, air traffic control information processing, air traffic control situation display, and high-gain directional antenna control. The automatic servo antenna subsystem includes a processor, an antenna control module, a gimbal, and a high-gain directional antenna. The processor parses the commands from the control terminal, thereby controlling the state of the gimbal and antenna control module. The antenna control module controls the operating state of the high-gain directional antenna. The gimbal is used to adjust the attitude of the high-gain directional antenna, thereby achieving automatic target matching and tracking in the air. This invention can perform target tracking and integrated networking based on flight air traffic control situation, significantly improving flight communication quality.
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Description

Technical Field

[0001] This invention relates to the field of aviation communication technology, and more specifically to an intelligent tracking antenna system for aviation communication. Background Technology

[0002] Currently, airport flight control communication radios use omnidirectional antennas for transmission. Because their radiated signals are evenly distributed in all directions and the energy is relatively dispersed, they are easily and severely affected by interference from unauthorized radio broadcasts, handheld radios, etc. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent tracking antenna system for aviation communication, which can perform target tracking and integrated networking according to the flight air traffic control situation, and is equipped with a small narrow beam high gain directional antenna to achieve regional air-to-ground communication focusing and anti-interference, thereby significantly improving the quality of flight communication.

[0004] To achieve the above objectives, this application proposes an intelligent tracking antenna system for aviation communications, comprising a target matching control subsystem and an automatic servo antenna subsystem. The target matching control subsystem includes an air traffic control server and a control terminal. The air traffic control server interconnects with the aviation department's air traffic control information network, transmitting air traffic control information to the system in message format. The control terminal is used for background map display, air traffic control information processing, air traffic control situation display, and high-gain directional antenna control. The automatic servo antenna subsystem includes a processor, an antenna control module, a gimbal, and a high-gain directional antenna. The processor parses the commands from the control terminal, thereby controlling the state of the gimbal and antenna control module. The antenna control module controls the operating state of the high-gain directional antenna. The gimbal is used to adjust the attitude of the high-gain directional antenna and transmits the attitude information back to the processor and control terminal in real time, thereby achieving automatic target matching and tracking in the air.

[0005] Furthermore, the high-gain directional antenna operates at a frequency of 30-1500MHz, has a half-power width of 30-65 degrees, a gain of 9dBi, a voltage standing wave ratio of less than or equal to 2, and a polarization mode of horizontal or vertical. It is a log-periodic antenna with a dipole as the basic oscillator unit.

[0006] Furthermore, the background map display uses GIS technology to display a vector electronic map, which includes city and radio station location information; the air traffic control intelligence processing parses the received air traffic control intelligence in message format to obtain the air traffic control batch number, aircraft type, number of aircraft, altitude, and location information; the air traffic control situation display displays the air traffic control batch number and flight track situation information on the electronic map in real time after the air traffic control intelligence is parsed; the high-gain directional antenna control sends corresponding control commands to the processor after matching the aerial target and the high-gain directional antenna position information.

[0007] Furthermore, the target matching control subsystem server deployed on the control terminal is used for airspace information display, remote antenna control settings, equipment status monitoring, and data management;

[0008] The airspace information display includes station information, antenna information, and air traffic control status display;

[0009] The antenna remote control settings include both manual and automatic control to meet different task requirements;

[0010] The device status monitoring displays real-time operating status data of online devices;

[0011] The data management system manages, configures, and imports station data, antenna data, and communication channel data, and modifies system data according to flight schedule adjustments.

[0012] Furthermore, the manual control specifically involves setting the antenna rotation angle to achieve adjustment operations in eight directions; the automatic control involves associating the antenna with the air traffic control target and automatically adjusting the antenna according to the status of the air traffic control target.

[0013] Furthermore, the air traffic control data configuration specifically involves: setting parameters for the air traffic control information in the message format to enable air traffic control information reception; and displaying the message in ASCII code.

[0014] Furthermore, the automatic servo antenna subsystem client deployed on the processor is used for status information display, local antenna control, antenna batching settings, historical air traffic control queries, and system configuration. When the network between the processor and the control terminal is interrupted, the client goes offline to complete the corresponding control operations.

[0015] The status information display includes station information, antenna information, and air traffic control situation display;

[0016] The local antenna control is to control the local antenna on the map, and to achieve adjustment in eight directions by setting the antenna rotation angle;

[0017] The antenna batching setting is an automatic control system that adjusts the antenna rotation in tandem based on air traffic control status.

[0018] The historical air traffic control query can be filtered and searched according to air traffic control type and time, and can view historical air traffic control data and export it.

[0019] Furthermore, the analysis of aerial targets includes:

[0020] The trajectory situation information is preprocessed before being displayed, including spatial alignment, trajectory tracking and detection, trajectory quality analysis, and correction of message data errors.

[0021] Verify the correctness of air traffic control track association: Use a combination of time accumulation and reliability to verify the correctness of air target track association, and promptly identify and resolve association errors and changes in association relationships;

[0022] Optimal fusion matching process: Perform quality analysis on each track, evaluate the continuity of the track, and detect and measure random errors and root mean square errors in real time to ensure optimal matching.

[0023] As a further step, automatic matching and tracking of aerial targets includes:

[0024] The maneuvering of aerial targets is identified by decomposing the flight state of aerial targets into three types of maneuvering: heading, speed, and altitude. If any of these maneuvers is identified, the target is considered to be maneuvering. The Kalman filter method is used to process the heading, speed, and altitude residuals of aerial targets separately to extract maneuvering features.

[0025] Intelligent speed control of the gimbal: Based on the pre-judgment of the air traffic control, the high-speed switching motor of the gimbal is activated to make the gimbal rotate and complete the positioning and tracking; the gimbal adopts worm gear transmission and high-speed control circuit to achieve high-speed and low-speed adaptive adjustment and timely response to the drive commands of the control terminal.

[0026] As a further step, switching between an omnidirectional antenna and a high-gain directional antenna is achieved through a high-power single-pole dual-state switch.

[0027] Compared with existing technologies, the above-mentioned technical solutions adopted in this invention have the following advantages: 1. Enhanced anti-interference capability: Based on comprehensive traditional transmission distance and other indicators, radiation direction and gain intensity are used as important indicators for evaluating antenna systems. This further emphasizes controlling the radiation direction and avoiding unintentional radiation, maximizing the signal strength delivered to the aircraft without changing the transmitter power, thereby combating electromagnetic interference.

[0028] 2. Enhanced precision and customization capabilities: The system can follow flight targets and track them in real time, always providing high-quality, interference-resistant signals to ensure flight operations and meet the precision information support needs of different types of flights.

[0029] 3. Enhanced System Integration Capabilities: For the first time, the antenna system closely integrates communication target protection with air traffic control information. On the one hand, directional antennas achieve regional coverage by networking various antennas within the region. On the other hand, to achieve interference resistance and ensure that the antenna radiation direction follows the aerial target in real time, air traffic control information is introduced into the antenna control system, forming a system of ground-to-air communication and air traffic control perception.

[0030] 4. Enhanced fault-fault capability: Multiple antennas are networked and controlled. When an antenna in the network fails, the control terminal or processor can promptly obtain the antenna's offline status and perform corresponding replacement communication to ensure uninterrupted ground-to-air communication. The system has remote network control and local control modes. If the network is blocked, it can quickly switch from network mode to local mode to effectively deal with network damage, information blockage and other special situations. Attached Figure Description

[0031] Figure 1 Schematic diagram of the structure of an intelligent tracking antenna system for aviation communications;

[0032] Figure 2 This is a diagram of a high-gain directional antenna structure.

[0033] Figure 3 A diagram showing the relationship between the stations and their antennas;

[0034] Figure 4 A graph showing the online air traffic control status;

[0035] Figure 5 Interface diagram for setting angle;

[0036] Figure 6 Data entry template diagram;

[0037] Figure 7 Antenna data entry diagram;

[0038] Figure 8 Diagram showing data entry for channel equipment;

[0039] Figure 9 Display the data of the equipment in a graphical format;

[0040] Figure 10 Configure the interface for air traffic control;

[0041] Figure 11 This is a diagram of the antenna angle control interface.

[0042] Figure 12 Here is a flowchart of the track processing procedure;

[0043] Figure 13 Flowchart for track creation and management;

[0044] Figure 14 Flowchart for target maneuver discrimination;

[0045] Figure 15 Antenna radiation pattern;

[0046] Figure 16 This is a diagram of the antenna's frequency response.

[0047] Figure 17This is a schematic diagram of a high-power single-pole dual solid-state switch. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the application; that is, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0049] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] Example 1

[0051] like Figure 1As shown, this embodiment provides an intelligent tracking antenna system for aviation communication. It can perform target tracking and integrated networking based on flight and air traffic control situations. Combined with a small, narrow-beam, high-gain directional antenna, it achieves focused air-to-ground communication with anti-interference capabilities, significantly improving flight communication quality. This intelligent tracking antenna system can be applied in multiple fields such as civil aviation communication, navigation, and 5G coverage. It can reduce electromagnetic leakage risks and improve the signal-to-noise ratio of airborne radios without changing radio parameters or transmission power, thereby increasing the communication distance and quality of air-to-ground communication links. The system specifically includes a target matching control subsystem and an automatic servo antenna subsystem. The target matching control subsystem includes an air traffic control server and a control terminal. The air traffic control server interconnects with the aviation department's air traffic control information network, transmitting air traffic control information to the system in message format. The control terminal is used for background map display, air traffic control information processing, air traffic control situation display, and high-gain directional antenna control. The background map display uses GIS technology to display a vector electronic map, supporting functions such as zooming in, zooming out, and roaming, including information such as cities and radio station locations. The air traffic control information processing mainly parses the received message-formatted air traffic control information to obtain information such as air traffic control batch number, aircraft type, number of aircraft, altitude, and location. The air traffic control situation display, after completing the air traffic control information parsing, displays the air traffic control batch number, flight track, and other situation information in real time on the electronic map. The high-gain directional antenna control mainly sends corresponding control commands to the processor after matching the aerial target and antenna position information. The automatic servo antenna subsystem includes a processor, an antenna control module, a gimbal, and a high-gain directional antenna. The processor parses commands from the control terminal and controls the state of the gimbal and antenna control module, possessing the capability to analyze single-site air traffic control information and supporting both network and single-site operation modes. The antenna control module controls the operating state of the high-gain directional antenna, used for switching between existing omnidirectional and directional antennas on air stations, achieving blind-spot-free air communication coverage. The gimbal adjusts the attitude of the high-gain directional antenna and transmits the attitude information back to the processor and control terminal in real time, thereby enabling automatic matching and tracking of aerial targets.

[0052] The high-gain directional antenna operates at frequencies of 30-1500MHz, meeting the aviation sector's requirements for airborne stations and data transmission bands. Its half-power bandwidth is 30-65 degrees, ensuring high-quality directional area coverage. With a gain of 9dBi and a voltage standing wave ratio (VSWR) of less than or equal to 2, it can adapt to high-gain, high-power airborne transmission requirements. Polarization can be horizontal or vertical, meeting different airborne deployment environments and support needs. It is a log-periodic antenna using dipoles as the basic element. Antenna modeling, simulation, analysis, and optimization are performed using CST software to meet requirements for rapid assembly and disassembly, lightweight structure, and high gain. This type of antenna can meet medium- and long-distance signal transmission needs; it has a narrow beam, resulting in less interference between systems; it meets wideband requirements, enabling high-capacity operation; the antenna radiator is an all-metal structure, combined with high-frequency cable transmission lines suitable for high-power applications; the antenna is small in size and lightweight, facilitating installation and transportation. Figure 2 As shown, the gimbal described in this embodiment is a heavy-duty gimbal, capable of tilting up and down and left and right. It drives the antenna to track aerial targets in real time via remote or local control. The heavy-duty gimbal has a robust structure, enabling it to operate under adverse weather conditions such as strong winds; the minimum gimbal step interval is 0.1 degrees, meeting the requirements for accurate tracking of high-speed aerial targets.

[0053] The target matching control subsystem server deployed on the control terminal is used for airspace information display, remote antenna control settings, equipment status monitoring, and data management; the airspace information display includes station information, antenna information, and air traffic control situation display; it can also display information on all stations and antennas within the system (such as...). Figure 3 As shown), real-time online air traffic control status data (such as...) Figure 4 (As shown). The antenna remote control settings include manual control and automatic control to meet different task needs; manual control specifically involves setting the antenna rotation angle to achieve adjustment operations in eight directions, such as... Figure 5 As shown, it allows for intuitive setting of the antenna rotation angle, improving antenna support efficiency. Automatic control associates the antenna with air traffic control targets, automatically adjusting the antenna according to the target's status. Equipment status monitoring displays real-time operational status data of online equipment, including gimbals, tilt sensors, and GPS devices. Data management manages, configures, and imports station data, antenna data, and communication channel data, modifying system data based on flight schedules. Station data is entered in batches using data templates, improving entry efficiency. Figure 6 As shown; antenna data is entered in batches according to the data template to improve the efficiency of data entry, such as... Figure 7 As shown; channel equipment data is entered in batches according to data templates to improve data preparation efficiency, such as... Figure 8As shown; after the data import is complete, you can view the imported data in Network Explorer; such as Figure 9 As shown. This system can perform parameter matching and settings for air traffic control information in message format, thereby enabling air traffic control information interception, such as... Figure 10 As shown.

[0054] The automatic servo antenna subsystem client, deployed on the processor, is used for status information display, local antenna control, antenna batching settings, historical air traffic control queries, and system configuration. To improve system resilience, the client also features server-side situational awareness display and system configuration functions. When the network between the processor and the control terminal is interrupted, the client disconnects from the network and completes the corresponding control operations. The status information display includes station information, antenna information, and air traffic control situational awareness display. The local antenna control involves operating the local antenna on a map, achieving eight-directional adjustment by setting the antenna rotation angle. The antenna rotation angle setting interface is shown below. Figure 11 As shown. The antenna batching setting automatically controls the antenna rotation and adjustment according to the air traffic control status; the historical air traffic control query filters the query according to air traffic control type and time, views historical air traffic control data, and can export it. The client supports querying historical air traffic control data and can replay the support status based on the recorded air traffic control data to carry out corresponding special training.

[0055] The intelligent tracking antenna system for aviation communications automatically tracks aircraft in the air. Therefore, the system must process the air traffic control situation accordingly to identify and target related objectives, driving the antenna to adjust accordingly. Simultaneously, due to the rapid changes in air traffic control situations, it is necessary to pre-assess air traffic control conditions; therefore, the system needs to display the air traffic control situation within a certain range in real time. Thus, the system analyzes aerial targets, including:

[0056] Air traffic control track preprocessing: Air traffic control information track data undergoes preprocessing before track display, including spatial alignment (uniform transformation of coordinate system), track tracking and detection (eliminating anomalies and large error points, and judging flight status), track quality analysis under the intelligent control module (evaluating continuity and calculating measurement variance), and correction of message data errors.

[0057] Air traffic control track association correctness verification: A method combining time accumulation and reliability is used to improve the probability of correct association. The correctness of air target track associations is verified, and association errors and changed associations are promptly identified and resolved. This effectively ensures the accuracy of air target batching, error detection, and data fusion. The processing procedure is as follows: Figure 12 As shown.

[0058] Optimal fusion matching process: By analyzing the track quality of each track, the continuity of the track is evaluated, and the root mean square error of random errors is detected and measured in real time to ensure optimal matching. The processing flow is as follows: Figure 13 As shown.

[0059] In the design of an intelligent tracking antenna system for aviation communications, the rotation of the gimbal drives the antenna orientation adjustment, thereby achieving automatic tracking of aerial targets. The entire tracking process is as follows: target position information is captured through air traffic control intelligence, automatically matched, and different drive signals are generated. These signals are remotely transmitted via a modem to control the lower-level processor. The processor parses the command information and drives the corresponding gimbal to rotate. The gimbal then drives the high-gain directional antenna to track the target. However, due to the high-speed maneuverability of aerial targets, when there are many targets, the system must not only capture the target's maneuvering direction in real time to drive the antenna to stably track and rotate, but also possess the function of synchronously and rapidly controlling multiple directions of the air-to-air antenna system. Therefore, automatic matching and tracking of aerial targets includes:

[0060] The system identifies aerial target maneuvers by decomposing the target's flight status into three categories: heading, speed, and altitude. If any one of these maneuvers is detected, the target is identified as maneuvering. A Kalman filter is used to process the heading, speed, and altitude residuals of the aerial target separately, extracting maneuver features to speed up the identification process, improve accuracy, and more accurately and promptly grasp the target's motion status. Figure 14 As shown.

[0061] Multi-user serial communication network: An antenna control command information transmission network is constructed using the RS485 bus standard. Because RS485 serial ports support one-to-many communication, one sender can correspond to multiple receivers, thus providing the possibility of multi-channel antenna control and reducing the number of serial ports. The RS-485 interface allows up to 128 transceivers to be connected on the bus, providing multi-station transmission capability. A command information transmission network can be easily established using a single RS-485 interface. The maximum data transmission rate of RS-485 is 10Mbps, which can meet the needs of high-capacity, high-speed transmission of control command information. The standard maximum transmission distance of the RS-485 bus is 4000 feet, but in practice it can reach 3000 meters, meeting the requirements of the lower-level processor to the antenna. The RS-485 bus is constructed using a combination of balanced drivers and differential receivers, which enhances its anti-common-mode interference capability and provides strong anti-noise interference capability, meeting the information transmission requirements in harsh electromagnetic environments. RS-485 logic "1" is represented by a voltage difference of +(2-6)V between the two lines, and logic "0" is represented by a voltage difference of -(2-6)V between the two lines. The interface signal level is lower than that of RS-232, making it less likely to damage the interface circuit chip. Moreover, this level is compatible with TTL level, which can be easily connected to TTL circuits. It has good reliability, stability, and compatibility, meeting the needs of communication equipment in field operations.

[0062] Intelligent speed control of the gimbal: Under normal circumstances, the antenna can follow the aerial target in a certain step angle. To meet the requirements of rapid switching of the air-to-ground communication link and to align the high-gain directional antenna with the flight, the antenna must be able to adjust its positioning quickly. As the distance between the flight and the antenna decreases, the antenna fine-tuning will inevitably increase; the angle between the high-speed flight and the antenna will change abruptly. Therefore, based on the air traffic control's pre-judgment, the high-speed switching motor of the gimbal must be activated to drive the gimbal to rotate and quickly complete the positioning and tracking. The gimbal adopts a worm gear drive + high-speed control circuit, which can realize high-speed and low-speed adaptive adjustment, and can respond to the drive commands of the control terminal in a timely manner to achieve stable tracking with high accuracy.

[0063] Because the existing shortwave ground-to-air antennas in the aviation sector use omnidirectional antenna systems, although they have a wide coverage area, they suffer from severe loss of ineffective radiated power and weak anti-interference capabilities. Therefore, using directional antennas with strong directivity and high gain can effectively overcome the shortcomings of omnidirectional antennas, improve the interference ratio of target flights, and effectively enhance anti-interference capabilities. However, conventional high-gain directional antennas in the UHF band are relatively large, making it difficult to meet the requirements for easy disassembly and vehicle loading during deployment. Therefore, miniaturization design of high-gain directional antennas is necessary. Log-periodic antennas have strong directivity and high gain, but as the gain increases, their structure becomes increasingly complex, making it difficult to meet deployment requirements. Therefore, the design of log-periodic antennas needs to be optimized: according to the characteristics of log-periodic antennas, when the spacing factor is large (small angle), the antenna has a large longitudinal length, high gain, and low standing wave ratio; when the spacing factor decreases (larger angle), the antenna's longitudinal length decreases, gain decreases, and standing wave ratio increases. Considering both antenna size and electrical performance, a log-periodic antenna with 11 pairs of elements, a longitudinal length of 1.574 meters, and made of zinc alloy was selected. After simulation, the antenna radiation pattern is obtained as follows: Figure 15 As shown, the frequency response is as follows Figure 16 As shown;

[0064] To ensure full compatibility with the omnidirectional antenna system of the aviation sector's VHF air-to-ground data station, remote autonomous switching between the two antenna systems is implemented according to mission requirements: switching between the omnidirectional antenna and the high-gain directional antenna is achieved through a high-power single-pole dual-solid-state switch, such as... Figure 17 As shown.

[0065] The main functions of the intelligent tracking antenna system for aviation communications include:

[0066] 1. Air Traffic Control Situation Display. It has the capability to analyze and display air traffic control intelligence messages, and can display airspace air traffic control situation through customized methods from the air traffic control intelligence network center or single-station air traffic control intelligence push, supporting up to 200 target groups.

[0067] 2. Automatic tracking of aerial targets. Based on the analyzed air traffic control situation, it can select aerial targets that need protection and lock onto and track them. When the position of an aerial target changes, it drives the antenna gimbal to rotate left, right, up, and down to automatically track the target, ensuring that the antenna's main lobe is always aligned with the target flight, thereby enhancing the strength of air-to-ground communication signals and improving the quality of information transmission.

[0068] 3. Reduce electromagnetic leakage in air-to-ground communication. By employing a high-gain directional antenna, electromagnetic radiation signals can be controlled within a 50-degree horizontal and 60-degree vertical cubic space. The antenna's main lobe can move with the airborne target, effectively reducing unintentional and ineffective electromagnetic radiation, ensuring that flights outside the radiation range are not interfered with.

[0069] 4. Improve the anti-interference capability of air-to-ground communication. A high-gain directional antenna is adopted, with a maximum antenna voltage standing wave ratio of 2 and the ability to withstand a maximum radiated power of 5000W. Compared to an omnidirectional antenna, the signal strength received by the aircraft from the ground can be increased by approximately 8 times, thereby increasing the quality and range of target communication.

[0070] 5. Remote networking control of air-to-ground communication antennas. The system supports both remote and local control modes, as well as both omnidirectional and directional antenna operating modes. Depending on mission requirements, it can network and control omnidirectional and directional antennas within the area, fully leveraging the advantages of various antennas while enhancing the antenna system's resilience and improving the quality of air-to-ground communication support.

[0071] 6. Compatible with various types of air-to-ground radios. It is compatible with various types of air-to-ground communication radios and data terminals used by aviation departments, improving air-to-ground communication anti-interference capabilities without changing radio power or operating modes; it is compatible with existing antenna support poles, enabling support functions without the need for additional construction; and it is compatible with existing equipment interfaces, making operation simple and requiring no specialized training.

[0072] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An air communications smart tracking antenna system, characterized by, The system comprises a target matching control subsystem and an automatic servo antenna subsystem; the target matching control subsystem comprises an air traffic control server and a control terminal; the air traffic control server realizes intercommunication with an air traffic control information network of an aviation department, and introduces air traffic control information to the system in a message format; the control terminal is used for background map display, air traffic control information processing, air traffic control situation display, and high-gain directional antenna control; the automatic servo antenna subsystem comprises a processor, an antenna control module, a cloud table, and a high-gain directional antenna; the processor analyzes instructions of the control terminal, and then controls states of the cloud table and the antenna control module; the antenna control module controls a working state of the high-gain directional antenna; the cloud table is used for adjusting a posture of the high-gain directional antenna, and feeds back the posture information to the processor and the control terminal in real time, so as to realize automatic matching tracking of an air target; The background map display adopts GIS technology to display a vector electronic map, and comprises city and radio station position information; the air traffic control information processing is to analyze received message format air traffic control information, and obtain batch number, aircraft type, number, height, and position information of air traffic control; the air traffic control situation display is to display batch number and situation information of a flight path of air traffic control on an electronic map in real time after air traffic control information analysis; the high-gain directional antenna control is to send corresponding control instructions to the processor after matching an air target and position information of the high-gain directional antenna; A target matching control subsystem service end deployed in the control terminal is used for airspace information display, antenna remote control setting, equipment state monitoring, and data management; the airspace information display comprises station information, antenna information, and air traffic control situation display; the antenna remote control setting comprises manual control and automatic control, so as to meet different task requirements; The equipment state monitoring is to display real-time running state data information of online equipment; the data management is to manage, configure, and import station data, antenna data, and communication channel data, and modify system data according to flight plan adjustment; Air target analysis comprises: preprocessing before situation information display of a flight path, including space alignment, flight path tracking and detection, flight path quality analysis, and message data error correction; verifying correctness of air traffic control flight path correlation: verifying correctness of air target flight path correlation by combining time accumulation and credibility, discovering and removing correlation errors and changed correlation relationships in time; optimal fusion matching processing: analyzing quality of each flight path, evaluating continuity of the flight path, and detecting and measuring random error and mean square error in real time, so as to ensure optimality of matching; The automatic matching tracking of the aerial target comprises: judging the aerial target maneuvering; decomposing the aerial target flight state into heading, speed and height three maneuvering judgments, and judging the target maneuvering if one of the judgments is made; using Kalman filtering method to process the heading, speed and height residual of the aerial target respectively, and extracting the maneuvering features; intelligent variable speed of the holder: starting the holder high-speed switching motor through the pre-judgment of the navigation, rotating the holder, and completing the positioning tracking; the holder uses worm gear transmission and high-speed control circuit to realize the high-speed and low-speed adaptive adjustment, and timely responds to the driving instructions of the control terminal.

2. The system of claim 1, wherein, The high-gain directional antenna has a working frequency of 30-1500 MHz, a half-power width of 30-65 degrees, a gain of 9dBi, a voltage standing wave ratio of less than or equal to 2, and a polarization mode of horizontal or vertical, and is a logarithmic periodic antenna with a dipole as a basic vibrator unit.

3. The system of claim 1, wherein, The artificial manual control is specifically setting the antenna rotation angle to realize eight-direction adjustment operation; the automatic control is to associate and configure the antenna with the navigation target, and automatically make the antenna follow-up adjustment according to the navigation target state.

4. The system of claim 1, wherein, The navigation data configuration is specifically parameter matching setting of the message format navigation information to realize the navigation information connection, and ASCII code display of the message.

5. The air communications smart tracking antenna system of claim 1, wherein, The automatic servo antenna subsystem client deployed on the processor is used for state information display, antenna local control, antenna batch setting, historical navigation query and system configuration, and when the network between the processor and the control terminal is interrupted, the client is disconnected from the network to complete the corresponding control operation. The state information display comprises station information, antenna information and navigation situation display. The antenna local control is to control the local antenna on the map to realize eight-direction adjustment operation through setting the antenna rotation angle. The antenna batch setting is to automatically control the antenna linkage rotation adjustment according to the navigation state. The historical navigation query filters and queries according to the navigation type and time, views the historical navigation record data, and can be exported.

6. The air communications smart tracking antenna system of claim 1, wherein, The omnidirectional antenna and the high-gain directional antenna are switched through the high-power single-pole two-solid-state switch.

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