A low-latency high-quality data link guarantee method based on double-movable platform guidance

Abstract

The application belongs to the technical field of aviation communication, and particularly relates to a low-latency high-quality data link guarantee method guided by a double-action platform, comprising the following steps: dividing multiple guide areas according to the relative distance between a ground terminal and a flight terminal, wherein the guide areas comprise a return area, a control area, an approach area and a final contact area; extracting the key technical index requirements of the data link for each guide area, wherein the key technical indexes comprise a bit error rate, a correct packet rate, an action distance, a transmission time delay and a transmission rate; dividing the communication between the ground terminal and the flight terminal into multiple stages according to the guide areas, and configuring a corresponding communication mode for each stage based on the key technical index requirements of each guide area. The application divides the relative distance between the ground terminal and the flight terminal into multiple guide areas, establishes the communication modes and interaction parameters of different guide areas, and further guarantees the quality of the data link.

Description

Technical Field

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

[0002] A dual-motion platform refers to a mobile flight end and a mobile ground end. The flight end lands on the ground end via a data link system. Existing data link systems mostly use UHF links to provide support for multiple stages of use, including command and guidance, approach control, and other functions. However, existing UHF links have significant limitations in transmission rate, anti-interference, and anti-interception capabilities, and cannot meet the low-latency, high-reliability transmission requirements of dual-motion platform guidance scenarios. Therefore, it is necessary to design a low-latency, high-quality system architecture and overall solution to support the dual-motion platform guidance data link, taking into account the specific scenarios of dual-motion platforms. Specific technical indicators should be proposed to guide and lead the technical design of related equipment for dual-motion platform data links. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a method for guaranteeing low-latency, high-quality data links in a dual-motion platform, comprising:

[0004] Multiple guidance zones are defined based on the relative distance between the ground end and the flight end. These guidance zones include the return-to-home zone, control zone, approach zone, and final contact zone.

[0005] Extract the key technical indicators required for the data link in each guidance region. The key technical indicators include: bit error rate, correct packet rate, operating distance, transmission delay and transmission rate.

[0006] The communication between the ground and flight terminals is divided into multiple stages based on the guidance area, and a corresponding communication mode is configured for each stage based on the key technical requirements of each guidance area.

[0007] Preferably, the return zone covers an area of ​​more than 100km around the ground terminal, and the flight terminal receives identification and location information from the ground terminal through broadcast listening mode;

[0008] The control area covers a range of 40km to 100km above the ground, with two-way communication between the flight end and the ground end for status monitoring information and air traffic control instructions;

[0009] The approach area covers a range of 20km to 40km above the ground, and the flight end receives air traffic control instructions and glide path guidance instructions.

[0010] The final contact area covers a range within 20km from the ground end, and the relative positioning between the flight end and the ground end is achieved through satellite differential and ground monitoring equipment.

[0011] Preferably, the parameters for interaction between the flight terminal and the ground terminal in the return zone include: ground terminal identification information, location information, and distance information to the final contact point.

[0012] Preferably, the information exchange method between the flight end and the ground end in the control area includes:

[0013] Send a network access request from the flight terminal to the ground terminal;

[0014] The ground terminal assigns a node identification number, time slot, and frequency point to the flight terminal based on the network access request;

[0015] Establish a guidance data link between the flight terminal and the ground terminal. Through the bidirectional exchange of status monitoring information and air traffic control information via the guidance data link, the flight terminal can continuously obtain distance, bearing, altitude, heading, and other flight terminal position information uploaded by the ground terminal.

[0016] Preferably, the interaction information between the flight end and the ground end in the approach zone includes:

[0017] Air traffic control instructions and glide path guidance instructions sent from the ground to the flight end; glide path guidance instructions fed back from the flight end to the ground end; and status monitoring information exchanged between the ground end and the flight end.

[0018] Preferably, in the final contact area: the relative positions of the flight end and the ground end are obtained by measuring data from multiple satellites and using a differential method;

[0019] The ground end uses relative position data obtained from ground monitoring equipment to calibrate the flight trajectory.

[0020] The relative position and attitude of 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] Preferably, when the flight terminal enters an area 10km away from the ground terminal but within 20km away, the ground terminal uses the relative position data obtained by the ground monitoring equipment to calibrate the trajectory of the flight terminal. When the flight terminal enters an area within 10km away from the ground terminal, a carrier phase differential system is used to obtain the relative position and relative attitude between the flight terminal and the ground terminal, and the glide state of the flight terminal is monitored until the final contact point is reached.

[0022] The advantages of this application include: This application divides the relative distance between the ground end and the flight end into multiple guidance areas, establishes communication methods and interaction parameters for different guidance areas, thereby ensuring the quality of the data link. Attached Figure Description

[0023] Figure 1 This is a preferred embodiment of the control area guidance information interaction process of this application.

[0024] Figure 2 This is a preferred embodiment of the approach area guidance information interaction process in this application.

[0025] Figure 3 This is a preferred embodiment of the final contact area guided information interaction process of this application. Detailed Implementation

[0026] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0027] This application provides a method for guaranteeing low latency and high quality data links in a dual-motion platform, including:

[0028] Multiple guidance zones are defined based on the relative distance between the ground end and the flight end. These guidance zones include the return-to-home zone, control zone, approach zone, and final contact zone.

[0029] Extract the key technical indicators required for the data link in each guidance region. The key technical indicators include: bit error rate, correct packet rate, operating distance, transmission delay and transmission rate.

[0030] The communication between the ground and flight terminals is divided into multiple stages based on the guidance area. A corresponding communication mode is configured for each stage based on the key technical requirements of each guidance area, such as... Figures 1-3 As shown.

[0031] Preferably, the return zone covers an area of ​​more than 100km around the ground terminal, and the flight terminal receives identification and location information from the ground terminal through broadcast listening mode;

[0032] The control area covers a range of 40km to 100km above the ground, with two-way communication between the flight end and the ground end for status monitoring information and air traffic control instructions;

[0033] The approach area covers a range of 20km to 40km above the ground, and the flight end receives air traffic control instructions and glide path guidance instructions.

[0034] The final contact area covers a range within 20km from the ground end, and the relative positioning between the flight end and the ground end is achieved through satellite differential and ground monitoring equipment.

[0035] Preferably, the parameters for interaction between the flight terminal and the ground terminal in the return zone include: ground terminal identification information, location information, and distance information to the final contact point.

[0036] Preferably, the information exchange method between the flight end and the ground end in the control area includes:

[0037] Send a network access request from the flight terminal to the ground terminal;

[0038] The ground terminal assigns a node identification number, time slot, and frequency point to the flight terminal based on the network access request;

[0039] Establish a guidance data link between the flight terminal and the ground terminal. Through the bidirectional exchange of status monitoring information and air traffic control information via the guidance data link, the flight terminal can continuously obtain distance, bearing, altitude, heading, and other flight terminal position information uploaded by the ground terminal.

[0040] Preferably, the interaction information between the flight end and the ground end in the approach zone includes:

[0041] Air traffic control instructions and glide path guidance instructions sent from the ground to the flight end; glide path guidance instructions fed back from the flight end to the ground end; and status monitoring information exchanged between the ground end and the flight end.

[0042] Preferably, in the final contact area: the relative positions of the flight end and the ground end are obtained by measuring data from multiple satellites and using a differential method;

[0043] The ground end uses relative position data obtained from ground monitoring equipment to calibrate the flight trajectory.

[0044] The relative position and attitude of 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.

[0045] In one possible implementation, the number of ground-guided flight terminals may be dozens. After confirming that the relative position of the flight terminal to the ground terminal, or more specifically, the final contact point with the ground terminal, is less than 100km, the flight terminal enters the control area and sends a network access request. Upon receiving the request, the ground terminal assigns a node identification number, time slot, and frequency to the flight terminal, and then begins bidirectional exchange of status monitoring information and air traffic control information via the guidance data link. The flight terminal continuously receives parameters such as distance, bearing, and altitude from the ground terminal, as well as information such as heading and the positions of other flight terminals uploaded by the ground terminal. A schematic diagram of the information exchange is shown below. Figure 1As shown. During this phase, 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 exchanged between the flight end and the ground end. This status monitoring information includes position and attitude information generated by the navigation equipment on each platform, as well as flight parameters generated by the flight control system on the flight end. The guidance equipment involved includes air traffic control equipment, satellites, and inertial navigation systems.

[0046] The approach zone covers an area of ​​20km to 40km from the final point of contact. The flight unit receives air traffic control instructions and glide slope guidance instructions. Specifically, when the flight unit enters the area 20-40km from the final point of contact with the ground control, it enters the approach zone. The ground control then sends air traffic control instructions and glide slope guidance instructions to the flight unit. The flight unit and ground control maintain an interactive monitoring system. Guidance equipment involved includes air traffic control equipment, satellites, and inertial navigation systems. Figure 2 As shown.

[0047] The final contact zone covers an area within 20km of the final contact point. High-precision relative positioning is achieved between the flight end and the ground end via satellite differential positioning and ground monitoring equipment. Specifically: After the flight end enters the area within 20km of the final contact point, it will be stably positioned alongside the ground end by at least four navigation satellites. Based on the measurement data from these satellites, a high-precision relative position is obtained using differential positioning. Furthermore, as the flight end enters this 20km area, it also enters the range of ground monitoring equipment. The ground end will use the relative position data obtained from this equipment to calibrate and monitor the flight end's trajectory. After entering the area within 10km of the final contact point, carrier phase differential positioning can be used to obtain a more accurate relative position and attitude between the ground end and the flight end, thereby monitoring the flight end's descent until it reaches the final contact point. During this process, in addition to exchanging navigation information, the flight end and the ground end need to exchange platform status information bidirectionally, such as... Figure 3 As shown.

[0048] The advantages of this application include: This application divides the relative distance between the ground end and the flight end into multiple guidance areas, establishes communication methods and interaction parameters for different guidance areas, thereby ensuring the quality of the data link.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for guaranteeing low latency and high quality data link guided by a dual-motion platform, characterized in that, include: Multiple guidance zones are defined based on the relative distance between the ground end and the flight end. These guidance zones include the return-to-home zone, control zone, approach zone, and final contact zone. Extract the key technical indicators required for the data link in each guidance region. The key technical indicators include: bit error rate, correct packet rate, operating distance, transmission delay and transmission rate. Configure the corresponding communication mode for each stage based on the key technical requirements of each guidance area. The return zone covers an area of ​​more than 100km around the final contact point, and the flight terminal receives identification and location information from the ground terminal through broadcast listening mode; The control area covers a range of 40km to 100km from the final point of contact, with two-way communication between the flight end and the ground end for status monitoring information and air traffic control instructions; The approach area covers a range of 20km to 40km from the final point of contact, and the flight end receives air traffic control instructions and glide path guidance instructions. The final contact zone covers an area within 20km of the final contact point, and the relative positioning between the flight end and the ground end is achieved through satellite differential and ground monitoring equipment.

2. The method for guaranteeing low latency and high quality data link guided by a dual-motion platform as described in claim 1, characterized in that, The parameters that the flight terminal and the ground terminal interact with in the return zone include: ground terminal identification information, location information, and distance information of the final contact point.

3. The method for guaranteeing low latency and high quality data link guided by a dual-motion platform as described in claim 1, characterized in that, The methods for information exchange between the flight end and the ground end in the control area include: The flight terminal sends a network access request to the ground terminal; The ground terminal assigns a node identification number, time slot, and frequency point to the flight terminal based on the network access request; Establish a guidance data link between the flight terminal and the ground terminal. Through the bidirectional exchange of status monitoring information and air traffic control information via the guidance data link, the flight terminal can continuously obtain distance, bearing, altitude, heading, and other flight terminal position information uploaded by the ground terminal.

4. The method for guaranteeing low latency and high quality data link guided by a dual-motion platform as described in claim 1, characterized in that, The information exchanged between the flight unit and the ground unit in the approach zone includes: Air traffic control instructions and glide path guidance instructions sent from the ground to the flight end; glide path guidance instructions fed back from the flight end to the ground end; and status monitoring information exchanged between the ground end and the flight end.

5. The method for guaranteeing low latency and high quality data link guided by a dual-motion platform as described in claim 1, characterized in that, In the final contact area: the relative positions of the flight end and the ground end are obtained by measuring data from multiple satellites and using a differential method; The ground end uses relative position data obtained from ground monitoring equipment to monitor the flight trajectory; The relative position and attitude of the flight end and the ground end are obtained by carrier phase differential, and the glide state of the flight end is monitored until the final contact point is reached.

6. The method for guaranteeing low latency and high quality data link guided by a dual-motion platform as described in claim 5, characterized in that, When the flight terminal enters an area 10km away from and 20km away from the final contact point, the ground terminal uses the relative position data obtained by the ground monitoring equipment to monitor the trajectory of the flight terminal. When the flight terminal enters an area 10km away from the final contact point, the relative position and relative attitude between the flight terminal and the ground terminal are obtained by carrier phase differential, and the glide state of the flight terminal is monitored until the final contact point is reached.

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