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A tdd time-frequency multiple access based multi-target aircraft network measurement and control method

A measurement and control method and aircraft technology, applied in network topology, synchronization devices, electrical components, etc., can solve problems such as inflexibility of time frequency resources, lack of synchronization, power control research, etc., to improve system capacity, signal-to-interference ratio improvement, and simplification Effects of time synchronization requirements

Active Publication Date: 2021-10-01
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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  • A tdd time-frequency multiple access based multi-target aircraft network measurement and control method
  • A tdd time-frequency multiple access based multi-target aircraft network measurement and control method
  • A tdd time-frequency multiple access based multi-target aircraft network measurement and control method

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Embodiment 1

[0072] figure 1 Resource planning, system frame when the system frequency long T U + T D + T G = 200ms, the system bandwidth demand max {B U , B D }. The system comprises an uplink frame duration remote frame is T U , Bandwidth B U , Down the length of the down-shot frame is T D , Bandwidth B D And a system frame guard period T G Wherein, the uplink frame is occupied by a single remote ground stations, a downlink telemetry frame by a plurality of common ownership of the aircraft.

[0073] Bandle B of downower telemetry frame D = 150kHz ship is divided into a plurality of five different sizes of bandwidth B m = 10kHz. Wherein a first bandwidth B m = 10kHz further divided into 5 time slots on the D m,u . The system 25 time slots resources, each frame of the aircraft when the system only occupies one time slot within a length of 200ms. Thus the capacity of the system is an aircraft 25.

[0074] figure 2 N-th estimated airborne stations between the ground station and airborne statio...

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Abstract

A multi-target aircraft network measurement and control method based on TDD time-frequency multiple access. Firstly, a multi-target aircraft network measurement and control system based on TDD time-frequency multiple access is established, and then the working mechanism of the multi-target aircraft network measurement and control system is designed: planning uplink and For the time-frequency resources of the downlink bidirectional link, the ground station uses an omnidirectional antenna to send remote control frame information to multiple aircraft on the ground→air uplink; the airborne station receives the remote control frame information and obtains the remote control frame T U The start and end time information of each aircraft can be used to achieve simple measurement and control network time synchronization based on the ground station; each aircraft extracts the time information from the remote control frame information it receives, and uses the omnidirectional antenna to transmit the time information in the air→ground downlink. Self-telemetry frame information is sent to the ground station. The invention can effectively simplify the time synchronization requirement of the networking nodes, and realize the efficient time-frequency resource scheduling of the secondary link of the networking aircraft measurement and control.

Description

Technical field [0001] The present invention relates to the field of digital wireless communication transmission, and in particular, to a multi-target aircraft group measuring method based on TDD time-frequency multiple access. Background technique [0002] In the aircraft task system, multi-objective simultaneous measurement and control needs are more and more, especially for short-range, mid-range aircraft, and low speed sub-link measuring and control communication systems for high-altitude platform aircraft reconnaissance systems for 100km. ability. These sub-link measuring and control systems require portable ground station equipment and miniaturized airborne equipment to achieve multi-target network measurement and control capabilities. [0003] Document "One-stop Multi-Hand UAV EMS (J]. Electro-optical and Control, 2013, 20 (3): 6-9." Based on Time Duplex Communication Method (TDD) and Time Division Multiple Access Communication System (TDMA) Designed a simple one-stop mult...

Claims

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Application Information

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Patent Type & Authority Patents(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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