Double-acting platform guided low-delay high-quality data link guarantee method

Abstract

The invention belongs to the technical field of aeronautical communication, and particularly relates to a double-acting platform guided low-delay high-quality data link guarantee method, which comprises the following steps: a plurality of guide areas are divided according to the relative distance between a ground end and a flight end, and the guide areas comprise a return area, a control area, an approach area and a final contact area; extracting key technical index requirements of each guide area on the data chain, wherein the key technical indexes comprise bit error rate, correct packet rate, operating distance, transmission delay and transmission rate; the communication between the ground end and the flight end is divided into a plurality of stages according to the guide areas, and a corresponding communication mode is configured for each stage based on the key technical index requirement of each guide area. According to the invention, the relative distance between the ground end and the flight end is divided into a plurality of guide areas, and communication modes and interaction parameters of different guide areas are established, so that the quality of a data link is ensured.

Description

Technical Field

[0001] This application belongs to the field of aviation communication technology, and particularly relates to a method for ensuring a low-latency and high-quality data link guided by a dual-moving platform. Background Art

[0002] The dual-moving platform refers to a moving flight end and a moving ground end. The flight end lands on the ground end through a data link system. Existing data link systems mostly use ultra-short wave links to provide support for multi-stage uses such as command guidance, approach control, and final approach control. Existing ultra-short wave links have great limitations in terms of transmission rate, anti-interference, anti-interception, etc., and cannot meet the usage requirements of low-latency and high-reliable transmission under the scenario conditions of dual-moving platform guidance. It is necessary to combine the special scenario of the dual-moving platform to design a low-latency and high-quality system architecture and overall solution for the data link supporting dual-moving platform guidance, and propose specific technical indicators to guide and lead the technical design of related equipment for the dual-moving platform data link. Summary of the Invention

[0003] To solve the above problems, this application provides a method for ensuring a low-latency and high-quality data link guided by a dual-moving platform, including: Dividing multiple guidance areas according to the relative distance between the ground end and the flight end, and the guidance areas include a return area, a control area, an approach area, and a final contact area; Extracting the key technical index requirements for the data link in each guidance area, and the key technical indicators include: bit error rate, correct packet rate, operating distance, transmission delay, and transmission rate; Dividing the communication between the ground end and the flight end into multiple stages according to the guidance area, and configuring corresponding communication modes for each stage based on the key technical index requirements of each guidance area.

[0004] Preferably, the return area covers a range of more than 100 km around the ground end, and the flight end receives the ground end identity recognition and position information through a broadcast listening mode; The control area covers a range of 40 km to 100 km from the ground end, and the flight end and the ground end interact with each other for status monitoring information and air traffic control instructions; The approach area covers a range of 20 km to 40 km from the ground end, and the flight end receives air traffic control instructions and glide path guidance instructions; The final contact area covers a range within 20 km from the ground end, and the flight end and the ground end achieve relative positioning through satellite differential and ground monitoring equipment.

[0005] Preferably, the parameters for the interaction between the flight end and the ground end in the return area include: ground end identity recognition information, position information, and final contact point distance information.

[0006] Preferably, the information interaction method between the flight end and the ground end in the control area includes: Send an access request from the flight end to the ground end; Based on the access request, the ground end assigns a node identification number, time slot, and frequency point to the flight end; Establish a guiding data link between the flight end and the ground end, and bidirectionally exchange status monitoring information and air traffic control information through the guiding data link, so that the flight end continuously obtains the distance, azimuth, altitude of the ground end, as well as the heading uploaded by the ground end and the position information of other flight ends.

[0007] Preferably, the interaction information between the flight end and the ground end in the approach area includes: The air traffic control instructions and glide guidance instructions sent from the ground end to the flight end; the glide guidance instructions fed back from the flight end to the ground end; the status monitoring information bidirectionally exchanged between the ground end and the flight end.

[0008] Preferably, in the final contact area: the flight end and the ground end obtain the relative position between the flight end and the ground end by measuring data of multiple satellites and using the differential method; The ground end calibrates the flight end trajectory using the relative position data obtained by the ground monitoring equipment; Adopt a carrier phase differential system to obtain the relative position and relative attitude between the flight end and the ground end, and monitor the glide state of the flight end until reaching the final contact point.

[0009] Preferably, when the flight end enters the area more than 10 km and within 20 km away from the ground end, the ground end calibrates the flight end trajectory using the relative position data obtained by the ground monitoring equipment. When the flight end enters the area within 10 km away from the ground end, adopt a carrier phase differential system to obtain the relative position and relative attitude between the flight end and the ground end, and monitor the glide state of the flight end until reaching the final contact point.

[0010] The advantages of this application include: this application divides the relative distance between the ground end and the flight end into multiple guiding areas, and establishes communication methods and interaction parameters for different guiding areas, thereby ensuring the quality of the data link. Brief Description of the Drawings

[0011] Figure 1 It is the guiding information interaction process in a preferred embodiment of this application in the control area.

[0012] Figure 2 It is the guiding information interaction process in a preferred embodiment of this application in the approach area.

[0013] Figure 3 It is the guiding information interaction process in a preferred embodiment of this application in the final contact area. Detailed Description of the Preferred Embodiment

[0014] To make the technical solutions and their advantages of this application clearer, the following will further describe the technical solutions of this application clearly and completely in conjunction with the accompanying drawings. It can be understood that the specific embodiments described herein are only partial embodiments of this application, which are only used to explain this application and not to limit this application. It should be noted that for the convenience of description, only the parts related to this application are shown in the drawings, and other related parts can refer to the general design. Without conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0015] This application provides a method for ensuring a low-latency and high-quality data link guided by a dual-motion platform, including: Dividing multiple guidance areas according to the relative distance between the ground end and the flight end, where the guidance areas include a return area, a control area, an approach area, and a final contact area; Extracting the key technical index requirements for the data link in each guidance area, where the key technical indexes include: bit error rate, correct packet rate, operating distance, transmission delay, and transmission rate; Dividing the communication between the ground end and the flight end into multiple stages according to the guidance area, and configuring corresponding communication modes for each stage based on the key technical index requirements of each guidance area, as Figures 1 - 3 shown.

[0016] Preferably, the return area covers a range of more than 100 km around the ground end, and the flight end receives the ground end's identity recognition and position information through the broadcast monitoring mode; The control area covers a range of 40 km to 100 km from the ground end, and the flight end and the ground end interact with each other for status monitoring information and air traffic control instructions; The approach area covers a range of 20 km to 40 km from the ground end, and the flight end receives air traffic control instructions and glide guidance instructions; The final contact area covers a range within 20 km from the ground end, and the flight end and the ground end achieve relative positioning through satellite differential and ground monitoring equipment.

[0017] Preferably, the parameters for the interaction between the flight end and the ground end in the return area include: ground end identity recognition information, position information, and the distance information of the final contact point.

[0018] Preferably, the information interaction method between the flight end and the ground end in the control area includes: Sending an access request from the flight end to the ground end; Allocating a node identification number, time slot, and frequency point for the flight end by the ground end based on the access request; Establish a guidance data link between the flight end and the ground end, and bidirectionally interact status monitoring information and air traffic control information through the guidance data link, so that the flight end continuously obtains the distance, azimuth, altitude of the ground end, as well as the course uploaded by the ground end and the position information of other flight ends.

[0019] Preferably, the interaction information between the flight end and the ground end in the approach area includes: The air traffic control instructions and the glide guidance instructions sent by the ground end to the flight end; the glide guidance instructions fed back by the flight end to the ground end; the status monitoring information bidirectionally interacted between the ground end and the flight end.

[0020] Preferably, in the final contact area: the flight end and the ground end obtain the relative position between the flight end and the ground end by measuring data of multiple satellites and using the differential method; The ground end calibrates the flight end trajectory by using the relative position data obtained by the ground monitoring equipment; The relative position and relative attitude between the flight end and the ground end are obtained by using a carrier phase differential system, and the glide state of the flight end is monitored until the final contact point is reached.

[0021] In an implementable manner, the number of flight ends guided by the ground end may be dozens. After the flight end confirms that the relative position with the ground end, further speaking, the final contact point of the ground end, is less than 100 km, it enters the control area and sends an access request message. After the ground end receives the request message, it assigns a node identification number, time slot, and frequency point to the flight end, and then starts to bidirectionally interact status monitoring information and air traffic control information through the guidance data link. The flight end continuously obtains parameters such as the distance, azimuth, altitude from the ground end, as well as information such as the course uploaded by the ground end and the positions of other flight ends. The information interaction schematic diagram is as Figure 1 shown. In this stage, the air traffic control system generates air traffic control position information, and the approach controller sends air traffic control instructions. Status monitoring information is also interacted between the flight end and the ground end. The status monitoring information includes position information, attitude information generated by the navigation equipment of each platform, and flight parameters generated by the flight control system of the flight end. The involved guidance equipment includes air traffic control equipment, satellites, inertial navigation, etc.

[0022] The approach area covers the range within 20 km to 40 km from the final contact point. The flight end receives air traffic control instructions and glide guidance instructions; specifically: when the flight end enters the area 20 - 40 km from the final contact point of the ground end, it enters the approach area, and the ground end sends air traffic control instructions and glide guidance instructions to the flight end. The flight end and the ground end maintain the interaction of status monitoring information. The involved guidance equipment includes air traffic control equipment, satellites, inertial navigation, etc. As Figure 2 shown.

[0023] The final contact area covers a range within 20 km from the final contact point. The flight end and the ground end achieve high-precision relative positioning through satellite differential and ground monitoring equipment. Specifically: after the flight end enters within 20 km from the final contact point of the ground end, more than 4 navigation satellites will be stably visible to both the flight end and the ground end. Based on the measurement data of the navigation satellites, a differential method is used to obtain a relatively high-precision relative position. In addition, when the flight end enters the area within 20 km, it also enters the working range of the ground monitoring equipment, and the ground end will use the relative position data obtained by the ground monitoring equipment to calibrate and monitor the trajectory of the flight end. After entering the area within 10 km from the final contact point, carrier-phase differential can be used to obtain a more accurate relative position and relative attitude between the ground end and the flight end, and then monitor the gliding state of the flight end until it reaches the final contact point. During this process, in addition to the interactive navigation information, the flight end and the ground end need to interact with each other's platform status information bidirectionally, such as Figure 3 as shown

[0024] The advantages of this application include: this application divides the relative distance between the ground end and the flight end into multiple guiding areas, and establishes communication methods and interaction parameters for different guiding areas, thereby ensuring the quality of the data link.

[0025] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for guaranteeing a low-latency and high-quality data link guided by a double-acting platform, characterized in that Including: Dividing multiple guidance areas according to the relative distance between the ground terminal and the flight terminal, where the guidance areas include a return area, a control area, an approach area, and a final contact area; Extracting the key technical index requirements for the data link in each guidance area, where the key technical indexes include: bit error rate, correct packet rate, operating distance, transmission delay, and transmission rate; Dividing the communication between the ground terminal and the flight terminal into multiple stages according to the guidance area, and configuring corresponding communication modes for each stage based on the key technical index requirements of each guidance area.

2. The method for ensuring a low-latency and high-quality data link guided by a dual-acting platform according to claim 1, characterized in that The return area covers a range of more than 100 km around the ground terminal, and the flight terminal receives the ground terminal's identity recognition and position information through the broadcast monitoring mode; The control area covers a range of 40 km to 100 km from the ground terminal, and the flight terminal and the ground terminal interact with each other for status monitoring information and air traffic control instructions; The approach area covers a range of 20 km to 40 km from the ground terminal, and the flight terminal receives air traffic control instructions and glide guidance instructions; The final contact area covers a range within 20 km from the ground terminal, and the flight terminal and the ground terminal achieve relative positioning through satellite differential and ground monitoring equipment.

3. The method for ensuring a low-latency and high-quality data link guided by a double-acting platform according to claim 1, characterized in that, The parameters for the interaction between the flight terminal and the ground terminal in the return area include: ground terminal identity recognition information, position information, and final contact point distance information.

4. The method for ensuring a low-latency and high-quality data link guided by a dual-acting platform according to claim 1, wherein The information interaction method between the flight terminal and the ground terminal in the control area includes: Sending an access request from the flight terminal to the ground terminal; Allocating a node identification number, time slot, and frequency point for the flight terminal by the ground terminal based on the access request; Establishing a guidance data link between the flight terminal and the ground terminal, and bidirectionally interacting status monitoring information and air traffic control information through the guidance data link, so that the flight terminal continuously obtains the distance, azimuth, altitude of the ground terminal, and the heading uploaded by the ground terminal and the position information of other flight terminals.

5. The method for guaranteeing a low-latency and high-quality data link guided by a double-acting platform according to claim 1, wherein The interaction information between the flight terminal and the ground terminal in the approach area includes: Air traffic control instructions and glide guidance instructions sent by the ground terminal to the flight terminal; glide guidance instructions fed back by the flight terminal to the ground terminal; status monitoring information bidirectionally interacted between the ground terminal and the flight terminal.

6. The method for ensuring a low-latency and high-quality data link guided by a double-acting platform according to claim 1, characterized in that, In the final contact area: the flight terminal and the ground terminal obtain the relative position between the flight terminal and the ground terminal by measuring data from multiple satellites and using the differential method; The ground terminal calibrates the flight terminal trajectory using the relative position data obtained by the ground monitoring equipment; Obtaining the relative position and relative attitude between the flight terminal and the ground terminal by using a carrier phase differential system, and monitoring the glide state of the flight terminal until reaching the final contact point.

7. The method for ensuring a low-latency and high-quality data link guided by a double-acting platform according to claim 6, characterized in that When the flight terminal enters the area more than 10 km and within 20 km from the ground terminal, the ground terminal calibrates the flight terminal trajectory using the relative position data obtained by the ground monitoring equipment. When the flight terminal enters the area within 10 km from the ground terminal, the relative position and relative attitude between the flight terminal and the ground terminal are obtained by using a carrier phase differential system, and the glide state of the flight terminal is monitored until reaching the final contact point.

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