Multi-target aircraft networking measurement and control method based on TDD time-frequency multiple access

A measurement and control method and aircraft technology, applied in network topology, radio transmission system, electrical components, etc., can solve the problems of power control research, inflexible time and frequency resources, lack of synchronization, etc. The effect of simplifying time synchronization requirements

Active Publication Date: 2019-08-27
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology

[0006] However, the above-mentioned literature generally designs a TDD-TDMA system for multi-target aircraft network measurement and control, and does not conduct research on low-complexity and efficient network synchronization and power control between actual network nodes, and the frequency resources are not flexible enough.

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  • Multi-target aircraft networking measurement and control method based on TDD time-frequency multiple access
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  • Multi-target aircraft networking measurement and control method based on TDD time-frequency multiple access

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Embodiment 1

[0072] figure 1 For system time-frequency resource planning, the system frame duration T U +T D +T G =200ms, the system bandwidth requirement is max{B U ,B D}. The duration of the system frame including the uplink remote control frame is T U , the bandwidth is B U , the duration of the downlink telemetry frame is T D , the bandwidth is B D , and the system frame guard slot T G , where the uplink remote control frame is occupied by one ground station, and the downlink telemetry frame is shared by multiple aircraft.

[0073] Bandwidth B of downlink telemetry frames D = 150kHz is divided into 5 bandwidths B of different sizes by multiple aircraft m = 10kHz. Among them, the first bandwidth B m = 10kHz is further divided into 5 time slots D in time m,u . The system has a total of 25 time slot resources, and each aircraft can only occupy one time slot within the system frame duration of 200ms. The aircraft capacity of the system is thus 25.

[0074] figure 2 Shown...

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Abstract

The invention discloses a multi-target aircraft networking measurement and control method based on TDD time-frequency multiple access. The method comprises the following steps: firstly, establishing amulti-target aircraft networking measurement and control system based on TDD time-frequency multiple access, secondly, designing a working mechanism of the multi-target aircraft networking measurement and control system: planning time-frequency resources of uplink and downlink bidirectional links, and sending remote control frame information to a plurality of aircrafts by a ground station in a ground-air uplink by using an omnidirectional antenna; the airborne station receiving the remote control frame information and obtains the start time information and the end time information of the remote control frame TU, so that simple measurement and control network time synchronization is realized by taking the ground station as a reference; and each aircraft extracting time information from thereceived remote control frame information, and sending self remote measurement frame information to a ground station in an air-ground downlink by using an omnidirectional antenna. The method can effectively simplify the time synchronization requirement of the networking node, and achieves the high-efficiency time-frequency resource scheduling of the auxiliary link for the measurement and controlof the networking aircraft.

Description

technical field [0001] The invention relates to the technical field of digital wireless communication transmission, in particular to a TDD time-frequency multiple access-based multi-target aircraft networking measurement and control method. Background technique [0002] In the aircraft mission system, there are more and more demands for multi-target simultaneous measurement and control, especially for short-range and medium-range aircraft with a range of more than 100km, and the low-speed sub-link measurement and control communication system of the high-altitude platform aircraft reconnaissance system to achieve wide-area coverage ability. These sub-link measurement and control systems require portable ground station equipment and miniaturized airborne equipment to achieve multi-target networking measurement and control capabilities. [0003] Literature "One station multi-machine UAV measurement and control system [J]. Electro-optic and Control, 2013, 20(3): 6-9." Based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W56/00H04W84/06
CPCH04B7/18506H04W56/001H04W56/0035H04W84/06
Inventor 闫朝星罗翔李响付林罡李辉王先朋
Owner BEIJING RES INST OF TELEMETRY
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