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Multi-emitting light source automatic tracking radio laser communication terminal equipment

A technology of automatic tracking and communication terminal, applied in the field of communication, can solve problems such as uneven distribution of refractive index, reduction of communication distance, optical signal jitter, etc., and achieve the goal of increasing transmission power, improving working ability, and increasing laser power density Effect

Inactive Publication Date: 2003-10-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Especially in foggy weather, the visibility is very low and the communication distance is greatly reduced
The second is the scintillation caused by atmospheric turbulence, which causes the jitter and bit error of the optical signal
The third is the "mirage" phenomenon caused by the uneven distribution of the refractive index due to the uneven temperature of the atmosphere. The laser beam transmits in the atmosphere and there is a "drift" that changes with the weather.
None of the above prior art has taken measures to overcome these problems caused by atmospheric turbulence and beam drift

Method used

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  • Multi-emitting light source automatic tracking radio laser communication terminal equipment
  • Multi-emitting light source automatic tracking radio laser communication terminal equipment
  • Multi-emitting light source automatic tracking radio laser communication terminal equipment

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing.

[0032] See first figure 2 , figure 2 It is a schematic diagram of the overall structure of the present invention. The multi-emitting light source automatic tracking wireless laser communication terminal of the present invention is mainly composed of a transmitting subsystem A and a receiving subsystem B. Where 1 is the receiving lens. 2 is the transmitting collimating lens array. 3 is a communication signal emitting laser array. In the system of the present invention, multiple emitting lasers and emitting lenses are employed. figure 2 As shown, N (N is an integer) communication transmitting lasers and N corresponding transmitting collimating lenses are used. 4 is the beacon laser emission collimating lens used for tracking. 5 is a beacon laser. 6 is a communication receiving detector. 7 is a band-pass filter in the communication laser band. Its function is to e...

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Abstract

The automatically-tracking multiple-emitting light source radio laser communication terminal includes emitting subsystem and receiving subsystem. It features that the emitting subsystem has communication signal emitting laser array, emitting collimating lens array, beacon laser and beacon laser emitting collimating lens; and the receiving subsystem has receiving lens, receiving detector, bicolor plane mirror, bandpass communication laser filter, bandpass beacon laser filter, tracking receiving detector, beacon laser preamplifier and processing circuit, and single-board computer to drive the motor via the driver for regulating the elevation and azimuth of the terminal. The integral equipment can emit, receive and track automatically, may be connected with communication system, and has the features of stable operation, high emitted power and high communication quality.

Description

Technical field: [0001] The invention is a wireless laser communication terminal with multiple emitting light sources and automatic tracking function. The invention belongs to the communication field. Background technique [0002] Free space laser communication technology has a wide range of applications, including: interconnection between mobile communication base stations, user access, local area network, intranet (Intranet), Internet (Internet) access, backup link, rapid deployment, temporary expansion, Disaster emergency. It becomes a better choice in places where it is inconvenient and impossible to lay optical cables, and places where it is inconvenient and impossible to erect microwave antennas. Compared with microwave communication, it does not require a frequency use license. [0003] Radio communication using electromagnetic waves as signal carriers has a long history, among which short-wave, microwave, and millimeter-wave wireless communications are still widel...

Claims

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Application Information

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IPC IPC(8): H04B10/11
Inventor 陈刚董作人方祖捷耿建新张位在李笑周长林
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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