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Angle tracking system

An angle tracking and sub-system technology, applied in the field of radar, can solve the problems of occupying satellite resources, being susceptible to interference, and the short range of UAVs.

Active Publication Date: 2013-07-10
NANJING XINXUAN ELECTRONICS SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the domestic platforms use radio stations and other platforms to realize information transmission, but this method makes the UAVs close in range and narrow in bandwidth, which is very susceptible to interference; foreign countries use satellite communications, which solves the problem of UAVs in short distances and narrow bandwidths. Narrow and highly susceptible to interference problems, but takes up a lot of satellite resources

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Embodiment Construction

[0033] The following describes in detail the ground vehicle angle tracking system of the UAV line-of-sight link of the present invention with reference to the drawings and specific implementation.

[0034] ·Calculation of channel parameters, estimation of receiving link level, minimum receiving level P of receiving link Rmin Calculate as follows:

[0035] P Rmin =[E b / N c ]+[B]+[K]+[T]+[N F ]‐[P G ];

[0036] Where: E b / N c The normalized signal-to-noise ratio is taken as 6.6dB (which corresponds to a bit error rate of 10 ‐5 , The demodulation threshold is 9.6dB, minus the decoding gain 3dB); B is the passband bandwidth; K Boltzmann constant: -228.6dB; T is the system noise temperature, taken as 298K (24.74dB); N F Receiver noise figure, taken as 2dB; P G Spread spectrum processing gain: 10lg0 (0dB). After substituting each value into the above formula, the lowest receiving level P of the system receiving link can be calculated Rmin . In the same way, the lowest receiving level P...

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Abstract

The invention provides an angle tracking system, which is characterized by comprising a control center, an antenna branch system, a feeder line branch system, an emission branch system, a receiving branch system, a servo branch system and a communication interface branch system. The angle tracking system can search, capture and track unmanned airplanes, precisely position the unmanned airplanes according to orientation information, elevation measurement information and information frame ranging information which are acquired by an angle tracking branch system, emit real-time remote control signals of a flying state of the unmanned airplane and a working state of airborne equipment, and receive real-time remote sensing signals of a flying parameter and detection information of the unmannedairplane and the working state of the airborne equipment; each working row channel is provided with a plurality of frequency points; and the working frequency band is wide, and the anti-interference performance is high.

Description

Technical field [0001] The invention belongs to the field of radar, in particular to a ground vehicle angle tracking system of a UAV line of sight link. Background technique [0002] It has been almost a century since Britain developed military drones in 1914. After unremitting efforts, drones have become an essential part of people's lives. Currently, UAVs are used in various fields, such as geological prospecting, weather monitoring, military and maritime inspections. How to effectively feed back the monitoring information on the UAV to the control center has become an important research direction. At present, most domestic platforms use radio stations and other platforms to realize information transmission, but this method makes the UAV's short range and narrow bandwidth and is very susceptible to interference; foreign countries use satellite communication, which solves the short range and bandwidth of the UAV. Narrow is very susceptible to interference, but it takes up a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/68
Inventor 谷义龙徐忠明张向东房福松沈春乐
Owner NANJING XINXUAN ELECTRONICS SYST ENG
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