Training data link video transmission method

Abstract

The invention belongs to the technical field of training data links, and discloses a training data link video transmission method, which comprises the following steps of: adopting a training data link; the training data chain system performs cooperative work of different networking modes of an embedded training mode, a flight safety monitoring mode, a take-off and landing training mode and a video transmission mode by using different time slot distribution methods and mode switching methods; different time slot allocation methods are based on networking aircraft quantity and networking mode switching, and the mode switching method is that the network management equipment performs automatic switching management according to task requirements. According to the invention, high-speed networking video transmission is realized, and high-speed video information observed by an aircraft sensor is transmitted to the ground during near-field training and take-off and landing processes of an aircraft in a network, so that the ground or a ship-borne command room can acquire image information of a visual angle of a pilot through a real-time video means, and therefore, the operation normalization of the pilot can be evaluated; and the possible risk can be prompted in time through the radio voice link.

Description

Technical Field

[0001] The invention belongs to the technical field of training data links, and relates to a training data link transmission method, and in particular to a training data link video transmission method. Background Art

[0002] At present, the training data links at home and abroad have realized the security monitoring and embedded training capabilities. However, in order to meet the purpose of large-scale exercises and training, the network scale and cross-regional coverage are expanded, so the bandwidth of a single network member does not support the video transmission function with large business bandwidth requirements. In view of the need to train pilots' take-off and landing capabilities and observe the image information from the pilot's perspective on the training aircraft platform, there is currently no training data link equipment that can simultaneously support daily embedded training and on-board video downloading. There are only individual devices that transmit videos separately, and it is impossible to form a training system. There is still a blank in the field of embedded training systems. Therefore, it is necessary to carry out research on the design of training data link video transmission, that is, how to make the bandwidth of a single network member of the training data link support the video transmission function with large business bandwidth requirements, and how to incorporate the video transmission capability into the training data link system. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a training data link video transmission method, which can remove individual devices that originally transmit videos separately and incorporate video data into the training data link system.

[0004] The technical solution of the present invention is as follows:

[0005] A training data link video transmission method adopts a training data link. Under a multi-aircraft networking architecture, the training data link system uses different time slot allocation methods and mode switching methods to coordinate the different networking modes of an embedded training mode, a flight safety monitoring mode, a take-off and landing training mode, and a video transmission mode. Different time slot allocation methods are based on the number of networked aircraft and the networking mode switching, and the mode switching method is that a network management device automatically switches and manages according to task requirements.

[0006] Furthermore, in the 4-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; one aircraft transmitting video independently occupies the video time slot to transmit data, and at the same time, the four aircraft take turns to occupy the air-to-air time slot to send TSPI information, and each aircraft is allocated 4 air-to-air time slots per second, so that the four aircraft can perform embedded training and flight safety monitoring information interaction at a TSPI update rate of 4Hz.

[0007] Furthermore, in the 8-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slot to transmit data, and at the same time, the 8 aircraft take turns to occupy the air-to-air time slot to send TSPI information. Each aircraft is allocated 8 air-to-air time slots per second, enabling the 8 aircraft to conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 2Hz.

[0008] Furthermore, in the 24-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slots to transmit data, and at the same time, the 24 aircraft take turns to occupy the air-to-air time slots to send TSPI information, and each aircraft is allocated 1 air-to-air time slot per second, so that the 24 aircraft can perform embedded training and flight safety monitoring information interaction at a TSPI update rate of 1Hz.

[0009] Furthermore, the network management equipment automatically switches management according to the mission requirements, specifically including: during the flight, according to the mission requirements, the network management equipment can switch the working mode of the onboard members in the network at any time, and send the working mode and time slot allocation to each aircraft platform in the network management time slot; after the aircraft platform receives the parameter message, it sends data in its own air-to-air, air-to-ground and video time slots according to the different modes and the time slot requirements allocated to it; thereby realizing video downloading in different modes.

[0010] Furthermore, in the video transmission mode, the training data link system allocates a dedicated video time slot to each node under the framework of TDMA networking. The aircraft transmitting video independently uses the video time slot to transmit data. 144 video time slots can be dynamically allocated within 1 second, for a total of 2 time frames. Every 4 time slots can be used as 5 time slots through data processing. The total number of video frames that can be transmitted is 18*5=90 time slots.

[0011] Furthermore, the aircraft video module uses a J599 series high-speed differential pair connector for external high-speed connection, and a pin PCB welding method for internal connection. The back of the PCB uses an H2 series high-speed backplane connector to plug into the aircraft video module.

[0012] Furthermore, the video compression unit of the aircraft video module adopts H.265 compression and H.264 compression methods under the auxiliary control of FPGA through hardware compression technology, and supports 100Kbps~6Mbps video compression output.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention realizes high-speed network video transmission in order to meet the requirements of transmitting high-speed video information observed by aircraft sensors to the ground during close-field training and take-off and landing of aircraft in the network, so that the ground or ship-borne command room can obtain image information from the pilot's perspective through real-time video means, thereby evaluating the pilot's operational compliance and providing timely reminders of possible risks through wireless telephone voice links.

[0015] 2. The method of the present invention can eliminate individual devices that originally transmit videos separately, which can effectively reduce the weight, space and price of aircraft and ground stations; and incorporate video data into the training data link system. The ground control room can obtain image information from the pilot's perspective in real time while monitoring the embedded training information and safety monitoring information on the aircraft in real time, thereby evaluating the pilot's operational compliance and providing timely reminders of possible risks through the wireless telephone voice link, which can effectively improve the training effectiveness of the trainer aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the working scenario of the training data link video transmission of the present invention;

[0017] Figure 2 This is an example of time slot division within 0.5s during takeoff and landing training of 24 aircraft;

[0018] Among them, 1-network member, 2-network member, 3-commander, 4-network member transmitting video.

[0019] Among them, G represents the network management time slot, V represents the video time slot allocated to one aircraft, AG represents the air-ground time slot, Ga represents the ground-air time slot, and R represents the relay time slot. DETAILED DESCRIPTION

[0020] This section is an embodiment of the present invention, which is used to explain and illustrate the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the orientations or positional relationships in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] Embodiment 1:

[0024] A training data link video transmission method adopts a training data link. Under a multi-aircraft networking architecture, the training data link system uses different time slot allocation methods and mode switching methods to coordinate the different networking modes of an embedded training mode, a flight safety monitoring mode, a take-off and landing training mode, and a video transmission mode. Different time slot allocation methods are based on the number of networked aircraft and the networking mode switching, and the mode switching method is that a network management device automatically switches and manages according to task requirements.

[0025] In the 4-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; one aircraft transmitting video independently occupies the video time slot to transmit data, and at the same time, the four aircraft take turns to occupy the air-to-air time slot to send TSPI information. Four air-to-air time slots are allocated to each aircraft per second, enabling the four aircraft to conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 4Hz.

[0026] In the 8-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slot to transmit data, and at the same time, the 8 aircraft take turns to occupy the air-to-air time slot to send TSPI information. Each aircraft is allocated 8 air-to-air time slots per second, enabling the 8 aircraft to conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 2Hz.

[0027] In the 24-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slots to transmit data, and at the same time, the 24 aircraft take turns to occupy the air-to-air time slots to send TSPI information, and each aircraft is allocated 1 air-to-air time slot per second, so that the 24 aircraft can conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 1Hz.

[0028] The network management equipment automatically switches management according to mission requirements, including: during the flight, according to mission requirements, the network management equipment can switch the working mode of airborne members in the network at any time, and send the working mode and time slot allocation to each aircraft platform in the network management time slot; after the aircraft platform receives the parameter message, it sends data in its own air-to-air, air-to-ground and video time slots according to different modes and the time slot requirements allocated to it, thereby realizing video download work in different modes.

[0029] In the video transmission mode, the training data link system allocates a dedicated video time slot to each node under the framework of TDMA networking. The aircraft transmitting video independently uses the video time slot to transmit data. 144 video time slots can be dynamically allocated within 1 second, a total of 2 time frames. Every 4 time slots can be used as 5 time slots through data processing. The total number of video frames that can be transmitted is 18*5=90 time slots.

[0030] The aircraft video module uses the J599 series high-speed differential pair connector for external high-speed connection and the pin PCB welding method for internal connection. The back of the PCB uses the H2 series high-speed backplane connector to plug into the aircraft video module.

[0031] The video compression unit of the aircraft video module adopts hardware compression technology under the auxiliary control of FPGA, adopts H.265 compression and H.264 compression methods, and supports 100Kbps~6Mbps video compression output.

[0032] Embodiment 2:

[0033] The training data link video transmission technology adopts high-speed networking video transmission technology and multi-mode collaborative work technology, wherein the high-speed networking video transmission technology is mainly realized by allocating dedicated video time slots under the multi-machine networking architecture, while meeting the needs of network members for safe monitoring of data transmission. The multi-mode collaborative work technology, under the premise of the original networking mode (including embedded training mode and flight safety monitoring mode), adds a take-off and landing training mode for video transmission to the training data link system, manages and plans uniformly through ground network management, efficiently switches multiple working modes, and receives and confirms airborne video requests at the same time.

[0034] The high-speed networking video transmission technology, when performing take-off and landing training mode, ensures that multiple aircraft perform wireless transmission of training data and safety monitoring data, and realizes video transmission of one aircraft by allocating enough time slots to video information. Under the framework of TDMA networking, 144 video time slots can be dynamically allocated within 1s, a total of 2 time frames, and every 4 time slots can be used as 5 time slots through data processing, so the total number of video frames that can be transmitted is 18*5=90 time slots. By calculation, it can be realized to support the transmission of video by a single aircraft (the video transmission frame rate is considered to be 20 frames / s). At the same time, 4 aircraft are satisfied with the transmission of embedded training and flight safety monitoring information at a TSPI update rate of 4Hz, or 8 aircraft are satisfied with the performance indicators at a TSPI update rate of 2Hz, or 24 aircraft are satisfied with the transmission of flight safety monitoring information at a TSPI update rate of 1Hz.

[0035] The high-speed networking video transmission technology mentioned above has a video signal rate of about 1.8Gbps from the aircraft video sensor to the training data link terminal, which has high requirements for the connection of the video signal. The device uses a dedicated J599 series high-speed differential pair connector for external high-speed connection, and a pin PCB welding method for internal connection. The back of the PCB uses an H2 series high-height backplane connector to plug into the module, realizing the cable-free connection of the device, while ensuring that the video signal transmission channel capacity reaches 3.125Gbps, ensuring the reliability of signal transmission.

[0036] The high-speed networking video transmission technology, the video compression unit of the video module adopts hardware compression technology under the auxiliary control of FPGA to realize the current mainstream H.265 compression and H.264 compression methods, and supports 100Kbps~6Mbps video compression output, which is suitable for back-end signal processing and then transmitted through a wireless link.

[0037] The multi-mode collaborative working technology, the networking modes include embedded training mode, flight safety monitoring mode and take-off and landing training mode. To achieve the collaborative working of these modes, multi-mode efficient switching technology is involved.

[0038] The efficient mode switching technology refers to planning three working modes, namely 4-aircraft embedded training + video transmission mode, 8-aircraft embedded training + video transmission mode, and 24-aircraft safety monitoring + video transmission mode, and unified planning and management by ground network management equipment. During the flight, according to the mission requirements, the network management can switch the working mode of the airborne members in the network at any time, and send parameter information such as working mode and time slot allocation to each aircraft platform in the network management time slot. After receiving the parameter message, the aircraft platform sends data in its own air-to-air, air-to-ground and video time slots according to different modes and the time slot requirements allocated to it. Thereby realizing the video download work in different modes.

[0039] The time slot allocation technology, the training data link network adopts different time slot allocation methods according to the above three working modes, to meet the needs of a single aircraft transmitting video, 4 aircraft performing embedded training and flight safety monitoring information transmission at a TSPI update rate of 4 Hz, or 8 aircraft performing performance indicators at a TSPI update rate of 2 Hz, or 24 aircraft performing flight safety monitoring information transmission at a TSPI update rate of 1 Hz.

[0040] The video downlink technology requires that the aircraft sends a landing video request to the ground network manager after receiving the LAND signal, and the ground network manager controls whether to agree to the downlink of the onboard video; when the aircraft receives the left wheel signal, it indicates that the aircraft has landed, and sends a request to exit video transmission to the ground network manager, and the ground network manager controls whether to agree to exit the onboard video.

[0041] Embodiment 3:

[0042] See also Figure 1 and Figure 2 , which is a working scenario diagram and time slot allocation example of the training data link video transmission of the present invention. The present invention adopts high-speed networking video transmission technology and multi-mode collaborative work technology, wherein the high-speed networking video transmission technology is mainly realized by allocating dedicated video time slots under a multi-machine networking architecture, while meeting the needs of network members for safe monitoring of data transmission. With the multi-mode collaborative work technology, the training data link system adds a take-off and landing training mode for video transmission under the premise of the original networking mode (including embedded training mode and flight safety monitoring mode), manages and plans uniformly through ground network management, efficiently switches multiple working modes, and simultaneously receives and confirms the airborne video download request.

[0043] The high-speed networking video transmission technology refers to the training data link system under the framework of TDMA networking, and the network allocates dedicated video time slots for each node. The aircraft transmitting video independently temporarily uses the video time slot to transmit data. 144 video time slots can be dynamically allocated within 1 second, with a total of 2 time frames. Every 4 time slots can be used as 5 time slots through data processing, so the total number of video frames that can be transmitted is 18*5=90 time slots. Through calculation, it can be realized to support the transmission of video by a single aircraft (the video transmission frame rate is considered to be 20 frames / s). At the same time, the airborne members in the network take turns to occupy the empty time slot to send TSPI information. One empty time slot can be allocated to each aircraft per second, which can meet the needs of 4 aircraft to perform embedded training and flight safety monitoring information transmission at a TSPI update rate of 4Hz, or 8 aircraft to perform embedded training and flight safety monitoring information transmission at a TSPI update rate of 2Hz, or 24 aircraft to perform flight safety monitoring information transmission at a TSPI update rate of 1Hz. Figure 2 An example of a time slot division method for taking off and landing training of 24 aircraft to meet the requirements of video transmission is given (the figure shows a time slot within 0.5s, and the last 0.5s is a repetition of the first 0.5s).

[0044] The high-speed networking video transmission technology mentioned above has a video signal rate of about 1.8Gbps from the aircraft video sensor to the training data link terminal, which has high requirements for the connection of the video signal. The device uses a dedicated J599 series high-speed differential pair connector for external high-speed connection, and a pin PCB welding method for internal connection. The back of the PCB uses an H2 series high-height backplane connector to plug into the module, realizing the cable-free connection of the device, while ensuring that the video signal transmission channel capacity reaches 3.125Gbps, ensuring the reliability of signal transmission.

[0045] The high-speed networking video transmission technology, the video compression unit of the video module adopts hardware compression technology under the auxiliary control of FPGA to realize the current mainstream H.265 compression and H.264 compression methods, and supports 100Kbps~6Mbps video compression output, which is suitable for back-end signal processing and then transmitted through a wireless link.

[0046] The multi-mode collaborative work technology, in the three networking modes of embedded training, flight safety monitoring, and take-off and landing training, the training data link system uses different time slot allocation methods and multi-mode efficient switching technology to achieve multi-mode collaborative work to meet the needs of the three networking modes. The three networking modes are as follows:

[0047] Embedded training mode

[0048] It is mainly used in embedded training, which requires the transmission of more relevant data such as sensor detection, weapon trajectory, target location, etc. generated by embedded computers, and requires a higher data update rate and lower data latency.

[0049] Flight safety monitoring mode

[0050] Aircraft platform safety monitoring data involves most data types such as engines and flight control on aircraft. The update rate is between 1Hz and 20Hz according to the attributes of different types of data, and the data has certain priority rules, so the data volume is large.

[0051] Takeoff and landing training mode

[0052] It is mainly used to monitor the sensors and pilot status in the cockpit in real time. It needs to transmit high-definition video data and a data link to compress and transmit the video. The amount of data is very large.

[0053] The video time slot allocation technology, the training data link network is divided into three working modes according to the collaborative working requirements of multiple networking modes, and adopts different time slot allocation methods, as follows:

[0054] 4-machine embedded training + video transmission mode

[0055] It supports video transmission by a single aircraft (the video transmission frame rate is temporarily considered to be 20 frames / s), and at the same time meets the needs of 4 aircraft for embedded training and flight safety monitoring information transmission at a TSPI update rate of 4Hz.

[0056] The training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node. One aircraft transmitting video independently occupies the video time slot to transmit data, while four aircraft take turns to occupy the air-to-air time slot to send TSPI information. Four air-to-air time slots can be allocated to each aircraft per second, enabling four aircraft to perform aircraft-embedded training and flight safety monitoring information interaction at a TSPI update rate of 4Hz.

[0057] 8-machine embedded training + video transmission mode

[0058] It supports video transmission for a single aircraft, while up to 8 aircraft can transmit embedded training and flight safety monitoring information at a TSPI update rate of 2Hz.

[0059] The training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node. The aircraft transmitting video independently uses the video time slot to transmit data. At the same time, the eight aircraft take turns to occupy the air-to-air time slot to send TSPI information. Eight air-to-air time slots can be allocated to each aircraft per second, enabling four aircraft to perform aircraft-embedded training and flight safety monitoring information interaction at a TSPI update rate of 2Hz.

[0060] 24 aircraft flight safety monitoring + video transmission mode

[0061] It supports video transmission for a single aircraft, while 24 aircraft can transmit embedded training and flight safety monitoring information at a TSPI update rate of 1Hz.

[0062] The training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node. The aircraft transmitting video independently uses the video time slot to transmit data. At the same time, 24 aircraft take turns to occupy the air-to-air time slot to send TSPI information. One air-to-air time slot can be allocated to each aircraft per second, so that 24 aircraft can perform aircraft-embedded training and flight safety monitoring information interaction at a TSPI update rate of 1Hz.

[0063] The multi-mode switching technology described above allows the network management device to switch and manage the above working modes according to the mission requirements. During the flight, according to the mission requirements, the network management can switch the working mode of the airborne members in the network at any time, and send parameter information such as working mode and time slot allocation to each aircraft platform in the network management time slot. After receiving the parameter message, the aircraft platform sends data in its own air-to-air, air-to-ground and video time slots according to different modes and the time slot requirements allocated to itself. This enables video downloading in different modes.

[0064] The video downlink technology is that after the aircraft receives the LAND signal, it sends a landing video request to the ground network manager, and the ground network manager controls whether to agree to the downlink of the aircraft video; when the aircraft receives the left wheel signal, it sends a request to exit the video transmission to the ground network manager, and the ground network manager controls whether to agree to exit the aircraft video.

[0065] Aiming at the functional characteristics of high video transmission rate, large networking scale and multiple working modes of the training data link, the present invention allocates enough video time slots on the networking scale architecture of 4, 8 and 24 machines, and realizes multi-mode collaborative work under the unified planning and management of the network management, and has the following functions:

[0066] Exchange fighter combat training data and flight safety monitoring information between aircraft and between aircraft and ground stations;

[0067] The original video information sent by the receiving system is compressed and transmitted via the data link;

[0068] Provide the ability for members to join and leave the network;

[0069] Provide the ability to relay information at the first level;

[0070] Provides the ability to adjust multi-level information rate control;

[0071] It has the capability to use the upper and lower antennas on board to perform dual transmission and dual reception;

[0072] Have the ability to encrypt and decrypt information to achieve confidential communications;

[0073] It has the function of recording the time and content of data sent and received as well as the link status, which is convenient for subsequent analysis.

[0074] Therefore, this training data link is designed with video transmission technology. Through the air-to-air and air-to-ground networking communication capabilities of the training data link, it can meet the requirements of the aircraft in the network to transmit high-speed video information observed by the aircraft sensors to the ground during close-field training and take-off and landing, so that the command room can obtain image information from the pilot's perspective through real-time video means, thereby evaluating the pilot's operational norms and providing timely reminders of possible risks through wireless telephone voice links. At the same time, it supports the interaction of embedded training information between aircraft and aircraft, aircraft and ground stations, and supports flight safety monitoring information from aircraft to ground stations.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A training data link video transmission method, characterized in that: Using a training data link, in a multi-aircraft networking architecture, the training data link system uses different time slot allocation methods and mode switching methods to coordinate different networking modes such as embedded training mode, flight safety monitoring mode, take-off and landing training mode, and video transmission mode. Different time slot allocation methods are based on the number of networked aircraft and networking mode switching, and the mode switching method is to automatically switch and manage the network management equipment according to task requirements.

2. A training data link video transmission method according to claim 1, characterized in that: In the 4-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; one aircraft transmitting video independently occupies the video time slot to transmit data, and at the same time, the four aircraft take turns to occupy the air-to-air time slot to send TSPI information. Four air-to-air time slots are allocated to each aircraft per second, enabling the four aircraft to conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 4Hz.

3. A training data link video transmission method according to claim 1, characterized in that: In the 8-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slot to transmit data, and at the same time, the 8 aircraft take turns to occupy the air-to-air time slot to send TSPI information. Each aircraft is allocated 8 air-to-air time slots per second, enabling the 8 aircraft to conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 2Hz.

4. A training data link video transmission method according to claim 1, characterized in that: In the 24-aircraft embedded training + flight safety monitoring + video transmission mode, the training data link system network allocates video time slots, ground-to-air time slots, relay time slots, air-to-ground time slots, and air-to-air time slots to each node; the aircraft transmitting video independently uses the video time slots to transmit data, and at the same time, the 24 aircraft take turns to occupy the air-to-air time slots to send TSPI information, and each aircraft is allocated 1 air-to-air time slot per second, so that the 24 aircraft can conduct embedded training and flight safety monitoring information interaction at a TSPI update rate of 1Hz.

5. A training data link video transmission method according to claim 1, characterized in that: The network management equipment automatically switches management according to mission requirements, including: during the flight, according to mission requirements, the network management equipment can switch the working mode of airborne members in the network at any time, and send the working mode and time slot allocation to each aircraft platform in the network management time slot; after the aircraft platform receives the parameter message, it sends data in its own air-to-air, air-to-ground and video time slots according to different modes and the time slot requirements allocated to it, thereby realizing video download work in different modes.

6. A training data link video transmission method according to claim 1, characterized in that: In the video transmission mode, the training data link system allocates a dedicated video time slot to each node under the framework of TDMA networking. The aircraft transmitting video independently uses the video time slot to transmit data. 144 video time slots can be dynamically allocated within 1 second, a total of 2 time frames. Every 4 time slots can be used as 5 time slots through data processing. The total number of video frames that can be transmitted is 18*5=90 time slots.

7. A training data link video transmission method according to claim 1, characterized in that: The aircraft video module uses the J599 series high-speed differential pair connector for external high-speed connection and the pin PCB welding method for internal connection. The back of the PCB uses the H2 series high-speed backplane connector to plug into the aircraft video module.

8. A training data link video transmission method according to claim 7, characterized in that: The video compression unit of the aircraft video module adopts hardware compression technology under the auxiliary control of FPGA, adopts H.265 compression and H.264 compression methods, and supports 100Kbps~6Mbps video compression output.

Images