CN100454790C - All optical satellite communication network route terminal - Google Patents
All optical satellite communication network route terminal Download PDFInfo
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- CN100454790C CN100454790C CNB200610009978XA CN200610009978A CN100454790C CN 100454790 C CN100454790 C CN 100454790C CN B200610009978X A CNB200610009978X A CN B200610009978XA CN 200610009978 A CN200610009978 A CN 200610009978A CN 100454790 C CN100454790 C CN 100454790C
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Abstract
The present invention discloses an all light route terminal for a satellite communication network, which relates to the technical field of satellite light communication. The present invention solves the problem of the high quality and power consumption of an all light route terminal used for the existing low orbit satellite laser communication terminal. Signal light which is emitted by a target terminal from an orientation is received by an optical retransmitting antenna (1) which faces the orientation and input to a transmission end of a light insertion division multiplexing module (2), and the signal light is output from the other transmission end of the light insertion division multiplexing module (2) and emitted to a target terminal from another orientation through another optical retransmitting antenna (1) after signal light output by the optical retransmitting antenna (1) is controlled and retransmitted by the light insertion division multiplexing module (2). Because the present invention adopts a 'full light' mode for design, communication light signals are transmitted in a system in a transparent way, photoelectric transition and electro-optic transition are not needed to carry out. The present invention has the advantages of whole simple system structure and low power consumption, and is suitable for an environment of a planet.
Description
Technical field
The present invention relates to the satellite optical communication technical field.
Background technology
At present, the satellite optical communication Study on Technology has entered the space test stage, and has successfully carried out between star and star ground laser communication test.Various countries are just stepping up to carry out the satellite optical communication Study on Technology now, and promote to practicability.At low orbit satellite and constellation networking, carried out the development of little optical subscriber terminal abroad, for technological reserve is made in networking between star.But, utilize when the optical communication terminal of development carries out the satellite optical communication networking in the world at present, often constitute the satellite optical communication network on the satellite with regard to needing a plurality of terminals to fetch with the chain that carries out different directions, and the control and management between a plurality of terminals on star is separate, this will cause optical communication terminal take satellite resource too much, control and management complexity etc. too, be disadvantageous to the satellite optical communication networks development.
In the low-orbit satellite laser communication terminal of finishing at present, comparatively advanced [the Isaac I.Kim of the STRV-2 terminal capabilities index of the U.S., Harel Hakakha, Brian Riley, Nicholas M.Wong, MaryMitchell. (Very) Preliminary Results of the STRV-2 Satellite-to-Ground LasercomExperiment.SPIE Proc.2000,3932:21～34].As adopt the STRV-2 terminal to realize the route conversion of laser satellite network, with the full optical routing terminal said function condition that has 3 optical heads under, need 3 STRV-2 terminal cooperatings.At this moment, route terminal weight is at least 43kg, power consumption 225W.
Summary of the invention
In order to solve the existing problem of in low-orbit satellite laser communication terminal, using that full optical routing terminal quality is big, power consumption is big, the invention provides a kind of all optical satellite communication network route terminal.
All optical satellite communication network route terminal of the present invention comprises a plurality of reception antenna 1-1, a plurality of transmitting antenna 1-3, a plurality of light splitting piece 1-4, a plurality of total reflective mirror 1-2, a plurality of condenser lens 1-5, a plurality of ccd detector 1-6 and directional drive 4, the flashlight of each reception antenna 1-1 output all is divided into two collimated light beams by a light splitting piece 1-4 and a total reflective mirror 1-2 respectively, above-mentioned a branch of collimated light beam is from the transmitted light output output of light splitting piece 1-4, above-mentioned another bundle collimated light beam is from the reverberation output output of total reflective mirror 1-2, and the flashlight of exporting from the transmitted light output of light splitting piece 1-4 focuses on back imaging on a ccd detector 1-6 by a condenser lens 1-5; Described route terminal also comprises OADM module 2, dsp processor 3, a plurality of fiber coupler 1-7, a plurality of fiber amplifier 1-8 and a plurality of optical fiber collimator 1-9, a transmitting antenna 1-3, a light splitting piece 1-4, a total reflective mirror 1-2, a condenser lens 1-5, a ccd detector 1-6, a reception antenna 1-1, a fiber coupler 1-7, an optics forwarding antenna 1 of a fiber amplifier 1-8 and an optical fiber collimator 1-9 formation route terminal, described route terminal comprises a plurality of respectively towards the optics forwarding antenna 1 of different azimuth target terminal, the flashlight of exporting from the reverberation output of total reflective mirror 1-2 in each optics forwarding antenna 1 is coupled into optical fiber by fiber coupler 1-7, the output of fiber coupler 1-7 links to each other by optical fiber with the input of fiber amplifier 1-8 in each optics forwarding antenna 1, the input of the output of fiber amplifier 1-8 and optical fiber collimator 1-9 links to each other with a transmission ends of OADM module 2 by optical fiber in each optics forwarding antenna 1, the flashlight of exporting from the output of optical fiber collimator 1-9 in each optics forwarding antenna 1 is launched to target terminal by transmitting antenna 1-3, the image information output of ccd detector 1-6 connects an image information input of dsp processor 3 in each optics forwarding antenna 1, and the control signal output ends of dsp processor 3 connects the control end of directional drive 4.Described dsp processor 3 utilizes the sighting angle of the incident light information calculations optics forwarding antenna 1 that optics forwarding antenna 1 gathers, and described directional drive 4 is deflection angles of adjusting optics forwarding antenna 1 according to the control signal of dsp processor 3.
Operation principle: all optical satellite communication network route terminal is the nodal terminal that forms the satellite optical communication network, the light signal emission that it has each different directions receives transfer capability, terminal is carried the optics forwarding antenna that a plurality of different directions are placed, and each optics forwarding antenna and terminal core are adopted and flexibly connected.Optics forwarding antenna of the present invention originally has the autonomous follow-up control to light beam in certain field range, and OADM module carries out centralized control and management to a plurality of optics forwarding antennas, be sent in the OADM module after the optics forwarding antenna that is oriented to this orientation from the flashlight of the target terminal in orientation emission receives, through the control of OADM module and transmit the back from it another transmission ends output and pass through another optics forwarding antenna and launch to the target terminal in another orientation.
The present invention proposes a kind of all optical satellite communication network route terminal, this terminal is the nodal terminal that forms the satellite optical communication network, adopts integrated design to have the light signal emission of each different directions, the ability that receives and transmit.The present invention is owing to adopt " full light " mode to design, and the Communication ray signal is in the internal system transparent transmission, so do not need to carry out photoelectricity and electric light conversion, whole system is simple in structure, and is low in energy consumption, is applicable to environment on the star.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, the all optical satellite communication network route terminal of this embodiment is by a plurality of reception antenna 1-1, a plurality of transmitting antenna 1-3, a plurality of light splitting piece 1-4, a plurality of total reflective mirror 1-2, a plurality of condenser lens 1-5, a plurality of ccd detector 1-6, directional drive 4, OADM module 2, dsp processor 3, a plurality of fiber coupler 1-7, a plurality of fiber amplifier 1-8 and a plurality of optical fiber collimator 1-9 form, the flashlight of each reception antenna 1-1 output all is divided into two collimated light beams by a light splitting piece 1-4 and a total reflective mirror 1-2 respectively, above-mentioned a branch of collimated light beam is from the transmitted light output output of light splitting piece 1-4, above-mentioned another bundle collimated light beam is from the reverberation output output of total reflective mirror 1-2, and the flashlight of exporting from the transmitted light output of light splitting piece 1-4 focuses on back imaging on a ccd detector 1-6 by a condenser lens 1-5; A transmitting antenna 1-3, a light splitting piece 1-4, a total reflective mirror 1-2, a condenser lens 1-5, a ccd detector 1-6, a reception antenna 1-1, a fiber coupler 1-7, an optics forwarding antenna 1 of a fiber amplifier 1-8 and an optical fiber collimator 1-9 formation route terminal, described route terminal comprises a plurality of respectively towards the optics forwarding antenna 1 of different azimuth target terminal, the flashlight of exporting from the reverberation output of total reflective mirror 1-2 in each optics forwarding antenna 1 is coupled into optical fiber by fiber coupler 1-7, the output of fiber coupler 1-7 links to each other by optical fiber with the input of fiber amplifier 1-8 in each optics forwarding antenna 1, the input of the output of fiber amplifier 1-8 and optical fiber collimator 1-9 links to each other with a transmission ends of OADM module 2 by optical fiber in each optics forwarding antenna 1, the flashlight of exporting from the output of optical fiber collimator 1-9 in each optics forwarding antenna 1 is launched to target terminal by transmitting antenna 1-3, the image information output of ccd detector 1-6 connects an image information input of dsp processor 3 in each optics forwarding antenna 1, and the control signal output ends of dsp processor 3 connects the control end of directional drive 4.Described dsp processor 3 utilizes the sighting angle of the incident light information calculations optics forwarding antenna 1 that optics forwarding antenna 1 gathers, and described directional drive 4 is adjusted the deflection angle of optics forwarding antenna 1 according to the control signal of dsp processor 3.
The flashlight that 2 pairs of described OADM modules enter wherein carries out route assignment and forwarding; Behind the flashlight process optical fiber collimator 1-9 collimation of OADM module 2 outputs, 1-3 is transmitted into target terminal by transmitting antenna.Described reception antenna 1-1 adopts Kepler's (transmission) formula telescope or Cassegrain (reflection) formula telescope.The antenna aperture of considering design has only 10cm, and Kepler's (transmission) formula telescope is selected in suggestion for use, and eyeglass should plate anti-reflection film for the optical band scope of work simultaneously.Described light splitting piece 1-4, total reflective mirror 1-2 and condenser lens 1-5 use the K9 coating film on glass to realize that effective aperture is not less than 3cm.The splitting ratio of light splitting piece 1-4 is 1: 1, the focal length 5cm of condenser lens 1-5, and total reflective mirror 1-2 reflectivity is greater than 99%.Described ccd detector 1-6 can select near face battle array infrared CCD detector (service band is 1550nm) for use, requires highly sensitive, stable performance.Described fiber coupler 1-7 selects the fast WBC-135-01 monomode fiber wide-band coupler of Wuhan light for use.Described fiber amplifier 1-8 selects the KPS-BT2 erbium-doped fiber amplifier that adopts U.S. Connet company for use, and the saturation output power maximum can reach 37dBm (5W), can satisfy the demanded power output of light beam long-distance transmissions.Described OADM module 2 is selected the 102B of U.S. Oplink for use, channel spacing 100GHz.Described optical fiber collimator 1-9 selects the KFCS single mode fiber collimator of U.S. Concent company for use.Described transmitting antenna 1-3 selects Kepler's (transmission) formula telescope for use, and antenna aperture has only 4cm, for the optical band scope plating anti-reflection film of work.The model that described dsp processor 3 is selected for use is the high performance float-point type processor TMS320C6713 of American TI Company.The maximum link distance of the route terminal of this embodiment is 1000km; Adopt optical band below 1550nm, the emission beam divergence angle is 50 μ rad, transmit gain and be receiving gain 106dB, and gain amplifier 101dB, light amplification gain 35dB, weight is less than 20kg, and power consumption is less than 40W, and communication data rate is 622Mbps, and the communication error rate is 10
-7
When the route terminal of this embodiment had three optics forwarding antennas 1, it was compared with the route terminal that contains three optical heads mentioned in the background technology, and weight reduces 53%, and power consumption reduces 82%.As seen, route terminal of the present invention has advantage in light weight, low in energy consumption, has adapted to the requirement of satellite component miniaturization, low-power consumption.
Claims (2)
1, a kind of all optical satellite communication network route terminal, described route terminal comprises a plurality of reception antennas (1-1), a plurality of transmitting antennas (1-3), a plurality of light splitting pieces (14), a plurality of total reflective mirrors (1-2), a plurality of condenser lenses (1-5), a plurality of ccd detectors (1-6) and directional drive (4), the flashlight of each reception antenna (1-1) output all is divided into two collimated light beams by a light splitting piece (1-4) and a total reflective mirror (1-2) respectively, above-mentioned a branch of collimated light beam is from the transmitted light output output of light splitting piece (1-4), above-mentioned another bundle collimated light beam is gone up imaging by a condenser lens (1-5) focusing back at a ccd detector (1-6) from the flashlight that the transmitted light output of light splitting piece (1-4) is exported from the reverberation output output of total reflective mirror (1-2); It is characterized in that described route terminal also comprises OADM module (2), dsp processor (3), a plurality of fiber couplers (1-7), a plurality of fiber amplifiers (1-8) and a plurality of optical fiber collimator (1-9), a transmitting antenna (1-3), a light splitting piece (1-4), a total reflective mirror (1-2), a condenser lens (1-5), a ccd detector (1-6), a reception antenna (1-1), a fiber coupler (1-7), a fiber amplifier (1-8) and an optical fiber collimator (1-9) constitute an optics forwarding antenna (1) of route terminal, described route terminal comprises a plurality of respectively towards the optics forwarding antenna (1) of different azimuth target terminal, the flashlight of exporting from the reverberation output of total reflective mirror (1-2) in each optics forwarding antenna (1) is coupled into optical fiber by fiber coupler (1-7), the output of fiber coupler (1-7) links to each other by optical fiber with the input of fiber amplifier (1-8) in each optics forwarding antenna (1), the input of the output of fiber amplifier (1-8) and optical fiber collimator (1-9) links to each other with a transmission ends of OADM module (2) by optical fiber in each optics forwarding antenna (1), the flashlight of exporting from the output of optical fiber collimator (1-9) in each optics forwarding antenna (1) is launched to target terminal by transmitting antenna (1-3), the image information output of ccd detector (1-6) connects an image information input of dsp processor (3) in each optics forwarding antenna (1), the control signal output ends of dsp processor (3) connects the control end of directional drive (4), and described directional drive (4) is a deflection angle of adjusting optics forwarding antenna (1) according to the control signal of dsp processor (3).
2, a kind of all optical satellite communication network route terminal according to claim 1 is characterized in that described dsp processor (3) utilizes the sighting angle of the incident light information calculations optics forwarding antenna (1) of optics forwarding antenna (1) collection.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610009978XA CN100454790C (en) | 2006-04-28 | 2006-04-28 | All optical satellite communication network route terminal |
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| CNB200610009978XA CN100454790C (en) | 2006-04-28 | 2006-04-28 | All optical satellite communication network route terminal |
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| CN1845476A CN1845476A (en) | 2006-10-11 |
| CN100454790C true CN100454790C (en) | 2009-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566693B (en) * | 2009-05-06 | 2012-02-15 | 北京航空航天大学 | System for detecting active imaging and passive imaging of common aperture |
| CN102253492B (en) * | 2011-06-24 | 2014-04-09 | 南京英田光学工程有限公司 | Laser emission optical system easily coupled with laser-optical fiber combination |
| CN102347799A (en) * | 2011-07-06 | 2012-02-08 | 哈尔滨工业大学 | Method and device for phase-locked forwarding of multi-frequency modulation laser |
| CN105490727B (en) * | 2015-11-26 | 2018-10-09 | 中国科学院半导体研究所 | Laser space communication repeater system based on passive photoswitch |
| CN106788700B (en) * | 2016-11-17 | 2019-04-02 | 哈尔滨工业大学 | Satellite laser communications acquisition performance ground small sample test method |
| CN109450521B (en) * | 2018-12-10 | 2020-06-12 | 北京邮电大学 | Inter-satellite access method and device |
| CN112332918B (en) * | 2019-01-25 | 2022-04-15 | 长沙天仪空间科技研究院有限公司 | Space laser communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465170A (en) * | 1993-01-19 | 1995-11-07 | Atr Optical And Radio Communications Research Lab. | Alignment adjusting system for use in optical system of optical transceiver |
| JP2000068934A (en) * | 1998-08-24 | 2000-03-03 | Nec Corp | Optical communication device mounted on satellite |
| CN1713019A (en) * | 2005-05-31 | 2005-12-28 | 哈尔滨工业大学 | Transmit-receive off-axis optical communication track sight of satellite |
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2006
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465170A (en) * | 1993-01-19 | 1995-11-07 | Atr Optical And Radio Communications Research Lab. | Alignment adjusting system for use in optical system of optical transceiver |
| JP2000068934A (en) * | 1998-08-24 | 2000-03-03 | Nec Corp | Optical communication device mounted on satellite |
| CN1713019A (en) * | 2005-05-31 | 2005-12-28 | 哈尔滨工业大学 | Transmit-receive off-axis optical communication track sight of satellite |
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