Cross-medium high-speed laser communication instrument
A communication instrument and cross-media technology, applied in the field of laser communication, can solve the problems of difficult shore-to-air communication, high difficulty of two-way communication, radio interference, etc., and achieve the effect of simple two-way communication link, low probability and high-speed data transmission
Pending Publication Date: 2020-05-01
TIANJIN JINHANG INST OF TECH PHYSICS
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Problems solved by technology
Long-wave radio has become the main means of underwater communication in various countries, but its transmission capacity is low, and two-way communication is difficult; the transmission capacity of underwater acoustic communication is slightly larger, but its safety performance is low, and it is difficult to communicate from shore to air; As far as deep communication methods are concerned, floating up will increase the possibility of submarines exposing their own targets; buoy communication methods using radio as the carrier have developed rapidly in recent years, but the hidden danger of radio interference and positioning cannot be fundamentally eradicated
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[0060] like figure 1 As shown, the present embodiment provides a cross-medium high-speed laser communication device. The structure of the communication device mainly includes three parts: 1. the submarine (including the main communication module except the antenna in the laser communication device); Optical fiber or cable, where buoys include transceiver antennas, floating bodies and corresponding control systems; ③ platforms such as satellites or aerial vehicles (including laser communication equipment).
[0061] The ① submarine communication equipment adopts a 1550nm laser as the emission light source of the uplink communication link, and realizes high-power, high-speed, high-bandwidth transmission of information flow through an optical fiber amplifier and a high-speed photoelectric modulator;
[0062] The ② buoy and the optical fiber or cable connected to the submarine, the launching antenna of the floating platform adopts a "cat's eye" large viewing angle antenna to realiz...
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The invention belongs to the technical field of laser communication, in particular to a cross-medium high-speed laser communication instrument. According to the aircraft submarine two-way communication scheme, a mooring optical fiber buoy platform is used as a relay to achieve free space laser upward communication; according to the ommunication instrument, an aircraft is used for achieving submarine downlink blue-green laser communication, and the mooring optical fiber buoy platform is used as a relay to achieve cross-medium upward communication. Compared with the prior art, 1550 nm laser is adopted as uplink signal light in uplink communication, and large-view-field, high-bandwidth and high-speed cross-medium uplink communication can be achieved.
Description
technical field [0001] The invention belongs to the technical field of laser communication, and in particular relates to a cross-medium high-speed laser communication device, which uses a tethered optical fiber buoy platform as a relay to realize a two-way communication scheme for aircraft and submarines for upward communication of laser in free space. Background technique [0002] While the sea provides concealment for submarines, it also poses a huge challenge to the underwater communication of submarines, because seawater shields most of the electromagnetic waves, and the radio communication systems widely used in people's daily life are almost impossible under seawater. use. Finding new communication methods and realizing real-time, high-speed, secure and confidential, two-way communication capabilities is an important prerequisite for giving full play to the combat effectiveness of submarines. [0003] When the submarine is underwater, the current underwater communicat...
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IPC IPC(8): H04B10/40H04B10/50H04B10/60H04B10/25H04B13/02
CPCH04B10/40H04B10/503H04B10/60H04B13/02
Inventor 王天鹤吴环宝韦晓莹贾晓东
Owner TIANJIN JINHANG INST OF TECH PHYSICS