CN109787677A - A kind of handheld terminal based on low orbit satellite optical communication system - Google Patents

A kind of handheld terminal based on low orbit satellite optical communication system Download PDF

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Publication number
CN109787677A
CN109787677A CN201811622149.8A CN201811622149A CN109787677A CN 109787677 A CN109787677 A CN 109787677A CN 201811622149 A CN201811622149 A CN 201811622149A CN 109787677 A CN109787677 A CN 109787677A
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China
Prior art keywords
satellite
handheld terminal
low orbit
laser
orbit satellite
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CN201811622149.8A
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Chinese (zh)
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CN109787677B (en
Inventor
任维佳
杨峰
杜志贵
陈险峰
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Changsha Sky Space Science And Technology Research Institute Co Ltd
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Changsha Sky Space Science And Technology Research Institute Co Ltd
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Abstract

The present invention relates to a kind of handheld terminals based on low orbit satellite optical communication system, including Acquisition tracking and pointing device, it is able to carry out posture changing to capture the laser beam of the first low orbit satellite transmitting, so that handheld terminal can establish first laser communication link with low orbit satellite;In the case where handheld terminal and the first low orbit satellite establish first laser communication link, the first information of handheld terminal is transferred to the synchronous satellite for determining position so that the laser beam of synchronous satellite transmitting can cover handheld terminal by the first low orbit satellite, and the second information that the first synchronous satellite of second laser communication link is established with handheld terminal can be transferred to handheld terminal by the first low orbit satellite, so that handheld terminal can be selected one of them that can establish the first synchronous satellite of second laser communication link with it based on self attributes and adjust the laser beam of the attitude acquisition synchronous satellite transmitting of Acquisition tracking and pointing device to establish second laser communication link whenever and wherever possible.

Description

A kind of handheld terminal based on low orbit satellite optical communication system
Technical field
The present invention relates to technical field of satellite communication more particularly to a kind of hand-held ends based on low orbit satellite optical communication system End.
Background technique
Satellite communication is the combination of space flight, communication, information and new material technology, is one of world's high-quality precision and sophisticated technology, Information age, it embodied country in the comprehensive strength of high-technology field.Satellite communication industry is as the important of ICT industry Component part in national information infrastructure construction, is realized in universal service, creation harmonious information society and National Security Strategy It plays an increasingly important role.
With mankind's offshore activities increasingly frequently, effect of the marine emergency communication guarantee in Activities of Ocean is more aobvious It is existing, it is the only way of access to the sea power.But for the more developed land communication of overocean communications at present, overocean communications is deposited Coverage area, in terms of be lacking.Marine emergency response window time is short, is required to quickly establish scene Communication, proposes very high request to the fast reaction of emergency communication.In consideration of it, needing one kind that can establish communication link rapidly The overocean communications equipment connect.
For example, a kind of portable general air communications disclosed in the Chinese patent of Publication No. CN108390714A is hand-held eventually End, including Information Collecting & Processing module and satellite phone voice communications module, Information Collecting & Processing module include central processing list Member, locating information acquisition unit, messaging unit, the novel acquisition unit of ADSB and storage unit;Locating information acquisition unit Output end and the input terminal of central processing unit be unidirectionally electrically connected, the output end and central processing of the packet sending and receiving unit The input terminal of unit is unidirectionally electrically connected, and the output end of the novel acquisition unit of ADSB and the input terminal of central processing unit are unidirectionally electric Property connection.The invention avoids the Special environment voices that the terrestrial networks such as forest, desert, ocean and 2G/3G/4G are not covered The inconvenience of communication solves existing handheld terminal and does not have satellite communication function, can not be not by ground base station the case where Lower carry out voice communication causes to communicate the big problem of limitation since base station coverage rate is limited.
For example, a kind of countryside portable satellite communication station disclosed in the Chinese patent of Publication No. CN207835450U, is used To solve the problems, such as that the prior art can not carry out field satellite communication in emergency management and rescue task.The utility model includes transport vehicle , control cabinet, power supply system and satellite system, power supply system include generator and generator drum, and control cabinet includes control cabinet Main body, computer, the network switch, satellite modem, voice gateways, video conference terminal, alternating current input interface, alternating current Output interface, HDMI output port, HDMI input port, left audio output port, right audio output port, audio input end Mouth, network interface, telephony interface, BUC interface, LNB interface, sound equipment, permission microphone, display screen, satellite phone, satellite antenna Pedestal and satellite antenna.
For example, a kind of portable emergency control system disclosed in the Chinese patent of Publication No. CN104637348A and its answering Anxious method of control.The system is used in the environment without fixed Control Centre, carries out control to aircraft, the system is using more Protocol converter is connected with fixed Control Centre, Multi-protocol converter connection communication server, and the communication server connects ADS-B With GPS receiver unit and satellite communication unit, and formula Control Centre is connected and fixed by optical fiber;The communication server will be from more associations The information of view converter, ADS-B and GPS receiver unit, satellite communication unit and fixed Control Centre is transferred to processing eventually End;Processing terminal carries out processing acquisition flight dynamic in real time to data are received, and according to the real-time dynamic of flight by referring to sky It waves radio station and carries out command and control;Command and control are carried out between ground to air command radio set and aircraft in the form of voice communication, together When ground to air command radio set issue conversational speech data processing terminal is entered by audio input line, processing terminal is to the conversational speech Data are saved.
For example, a kind of full backpack field satellite emergency disclosed in the Chinese patent of Publication No. CN202014248U Stand, including for be responsible for data are handled, the message handler of data information exchange;For to field satellite emergency The network manager that the transmission network stood is managed;It is separately connected with message handler, network manager and is defended with portable The satellite transmission module that star antenna equipment is connected by radio-frequency cable;Situation of geological disaster information input information for that will acquire Processor, and the business transmission module with message handler progress information exchange.It is by data needed for the disaster field of field Communication, voice communication and video communication are integrated, are suitable for various different disaster fields, meet business crisis phone only, number According to the application of the functions such as transmission, video monitoring, video conference and OA;In addition, it is light-weight, it is suitble to one to bear out using.
For example, a kind of vehicle-mounted mode satellite handheld terminal disclosed in the Chinese patent of Publication No. CN106533484A.Its Including display screen module, application processor module, satellite communication processor module, the machine antenna, terminal device structural housing, end Hold antenna adaptor and car antenna;Display screen module is connect by FPC connecting line with application processor module, using processing Device module is connect with satellite communication processor module, and satellite communication processor module is connect with antenna adaptor, display screen mould Group, application processor module, satellite communication processor module, the machine antenna are connect with terminal device structural housing;Terminal antenna Switching device is connect with terminal device structural housing;Terminal device structural housing passes through terminal antenna switching device and car antenna Connection.
For example, a kind of hand-held satellite communication terminal and the terminal disclosed in the Chinese patent of Publication No. CN101938287B Instruct user by the method for antenna alignment satellite.The terminal include main control chip, by control with data-interface respectively with master control Satellite communication functional block and external equipment that chip is connected, the display equipment being connected by display interface with main control chip, It further include GPS positioning module, magnetic field sensor and acceleration transducer, GPS positioning module passes through UART interface and main control chip Connection;Magnetic field sensor is connect by I2C interface with main control chip;Acceleration transducer is connected by SPI interface and main control chip It connects.Its method is to calculate the orientation that satellite and antenna are directed toward in real time, and show in terminal display interface to graphically, can Instruct user that antenna accurately easily and fast, is intuitively directed toward satellite direction, to solve whole using satellite communication in field Preferable communication efficiency is obtained when end, antenna alignment satellite is determined the inconvenient of satellite position by ground satellite communication terminal The problem of (ancillary equipment is more, and calculating is time-consuming, and antenna is directed toward indefinite).
For example, a kind of mobile satellite communication system disclosed in the Chinese patent of Publication No. CN204031165U is hand-held eventually End, is provided with radio frequency shielded enclosure between baseband board and rf board;Back splint is provided in rear shell, after being fixedly mounted on by movable axis On shell;It is provided with air bag component, air bag component is by least one gas generator and the contraction gas for being set to handheld terminal outer rim Capsule composition;Metal dust net is provided on acoustic aperture section out, mainboard is equipped with antenna body and feed, metal dust net and feed Form radio frequency connection.The utility model is additionally arranged radio frequency shielded enclosure between baseband board and rf board, can effectively eliminate base band Interfering with each other between plate and rf board improves handheld terminal job stability;Metal dust net is penetrated with antenna feed formation After frequency connects, the flexibility ratio and freedom degree of handheld terminal antenna cabling are improved.
For example, a kind of dual-band antenna and its terminal disclosed in the Chinese patent of Publication No. CN108281768A.The terminal Including mainboard, cluster communication module, satellite phone communication module and dual-band antenna.The dual-band antenna is radiated including a spiral arm Body, a phase power splitter, one circular polarisation/linear polarization combiner, a common mode/difference film combiner and RF feeder line;Wherein, spiral arm Radiator is connect with phase power splitter;Circular polarisation/linear polarization combiner is in parallel with phase power splitter, is connected to altogether by RF feeder line Mould/difference film combiner;Linear polarization signal is transmitted to circular polarisation/linear polarization combiner, circular polarisation letter along RF feeder line in the form of common mode Number phase power splitter is transmitted to along RF feeder line in the form of differential mode.
For example, a kind of satellite network voice communication optimization system disclosed in the Chinese patent of Publication No. CN108832991A System.Including user terminal, for receiving voice signal, satellite antenna, for transmitting voice signal to satellite communication module;It defends Star communication module, for establishing the encoding and decoding of voice communication connection, voice signal and the transmitting and reception of voice signal;Voice network It closes, for voice signal being sent to specified user terminal, realizes call function;The invention also discloses be based on satellite network Voice communication method.Present invention efficiently solves forest, desert, it is special that the terrestrial networks such as ocean and 2G/3G/4G are not covered The voice communication problem in environment area to field rescue, is reported, is played the role of very important.
By the investigation to the prior art, most of current handheld terminal is all applied to electromagnetic communication field, and Laser communication field is relatively fewer.
Summary of the invention
Low orbit satellite is different due to having between track satellite and the earth when establishing laser communication link with handheld terminal Angular speed, therefore the laser communication link of low orbit satellite and handheld terminal constantly can continually switch, in switching and its The laser communication link middle section having been set up is caused to communicate, this is and its unfavorable for emergency communication field.Therefore in order to Keep satellite that can keep communicating to connect anywhere or anytime with handheld terminal, synchronous satellite and handheld terminal can be established good Communication connection, but distance of the synchronous satellite away from the earth be about at 3.6 ten thousand kilometers or so, and distance of the low orbit satellite apart from the earth About at 200~2000 kilometers or so, it is seen then that low orbit satellite and handheld terminal can more establish communication link but need not Switch disconnectedly, this to being and its unfavorable with emergency communication, but with handheld terminal to establish communication link opposite low for synchronous satellite Rail satellite is difficult to directly establish communication link, this is not suitable for emergency communication yet.
For the deficiencies of the prior art, the present invention provides a kind of handheld terminals based on low orbit satellite optical communication system. Its beacon beam that can capture track satellite launch in a short time can tentatively establish communication connection, and preliminary establishing After communication connection, by the communication connection of low orbit satellite and synchronous satellite, handheld terminal passes through pose adjustment and synchronous satellite Stable communication connection is established, to establish emergency communication.
A kind of handheld terminal based on low orbit satellite optical communication system provided by the invention, the Acquisition tracking and pointing device Be able to carry out posture changing with capture the first low orbit satellite transmitting laser beam so that the handheld terminal can with it is described First low orbit satellite establishes first laser communication link;First laser is established in the handheld terminal and first low orbit satellite In the case where communication link, first low orbit satellite is before the laser beam of its transmitting cannot cover the handheld terminal by institute The first information for stating handheld terminal, which is transferred to the laser beam at least one transmitting for determining position, can cover described hold The synchronous satellite of terminal, and first low orbit satellite will establish second laser communication link with the handheld terminal Second information of the first synchronous satellite is transferred to the handheld terminal by the first laser communication link, so that the hand Holding terminal can select one of them that can establish described the first of the second laser communication link with it based on self attributes Synchronous satellite and the posture for adjusting the Acquisition tracking and pointing device synchronize so that the handheld terminal can capture described first The laser beam of satellite launch forms emergency communication link to establish the second laser communication link whenever and wherever possible.
According to a kind of preferred embodiment, almanac data and the first information are based on not in first low orbit satellite In the case where at least one described synchronous satellite can be selected, first low orbit satellite is based on almanac data and the first information Selected second low orbit satellite is used as cannot establish the first laser link in first low orbit satellite with the handheld terminal In the case where the satellite of third laser communication link is established with the handheld terminal so that the handheld terminal can at any time with Ground and satellite, which are established, to be communicated to connect;Wherein, first low orbit satellite and second low orbit satellite establish communicate to connect so that Second low orbit satellite can obtain the first information of the handheld terminal at least partly with can be described the One low orbit satellite its transmitting laser beam cannot cover the handheld terminal when second low orbit satellite can with it is described Handheld terminal establishes the third laser communication link.
It is preferably carried out mode according to one kind, described second is established in first synchronous satellite and the handheld terminal and swashs Before optical communication link, first low orbit satellite is based on almanac data, and with the first information to select at least one described synchronous Satellite simultaneously establishes communication connection therewith, and first low orbit satellite is after the third information for receiving the synchronous satellite feedback Determine first synchronous satellite as the synchronous satellite for establishing the second laser communication link with the handheld terminal; It not can determine that first synchronous satellite can establish described second as with the handheld terminal in first low orbit satellite In the case where the synchronous satellite of laser communication link, first low orbit satellite is based on almanac data and the first information Selected second low orbit satellite is used as cannot establish the first laser link in first low orbit satellite with the handheld terminal In the case where the satellite of third laser communication link is established with the handheld terminal so that the handheld terminal can at any time with Ground and satellite, which are established, to be communicated to connect.
It is preferably carried out mode according to one kind, the Acquisition tracking and pointing device is capturing the first low orbit satellite transmitting Laser beam during by mechanical realization module carry out pose adjustment, wherein the mechanical realization module includes supporting part With pose adjustment portion, the Acquisition tracking and pointing device is fixedly installed in the supporting part, the supporting part and the posture tune Whole flexible connection, so that the Acquisition tracking and pointing device can be under the action of the pose adjustment portion to adjust The azimuth and/or the elevation angle for stating Acquisition tracking and pointing device capture the described first low rail in the Acquisition tracking and pointing device When the laser beam of satellite launch, the pose adjustment portion stops action, and the Acquisition tracking and pointing device is by the orientation Angle and the elevation angle, which are passed, is transferred to first low orbit satellite by the first laser communication link;First low orbit satellite It can be finally inversed by the position of the handheld terminal based on the azimuth and the elevation angle and the first laser can be based on Communication link transmits information to the handheld terminal.
Be preferably carried out mode according to one kind, first low orbit satellite by the azimuth and the elevation angle be transferred to A few synchronous satellite, at least one described synchronous satellite are based on the azimuth, the elevation angle and its location information and generate institute State third information and feed back to first low orbit satellite, first low orbit satellite select first synchronous satellite as with institute State the third that handheld terminal establishes the satellite of the second laser communication link and feeds back first synchronous satellite Information is transferred to the handheld terminal by the first laser communication link, and the handheld terminal is logical based on the third information The pose adjustment portion is crossed to adjust the deflection and/or the elevation angle so that the Acquisition tracking and pointing device can capture institute State the first synchronous satellite generation laser beam to the handheld terminal can with first synchronous satellite establish described in Second laser communication link.
It is preferably carried out mode according to one kind, the handheld terminal is establishing described first with first low orbit satellite In the case where establishing the third laser communication link in the case where laser communication link or with second low orbit satellite or In the case where establishing the second laser communication link with first synchronous satellite, first low orbit satellite or described second The location information of the handheld terminal can be transferred in GPS satellite or big-dipper satellite by low orbit satellite or first synchronous satellite At least one, at least one of the GPS satellite or the big-dipper satellite provide the location information based on handheld terminal To navigation information, the navigation information is through the first laser communication link or second laser communication link or third laser communication Link is transferred to the handheld terminal.
It is preferably carried out mode according to one kind, the Acquisition tracking and pointing device includes data transmission module, polarization beam splitting Device, the first beam splitter, the second beam splitter, capture detecting module, tracking detecting module, liquid crystal optical phased array antenna and adaptive Controller;The data transmission module is θ for generating beam divergence angleM1Optical signal and be sent to the polarization beam apparatus; The polarization beam apparatus is used to separate transmitting light beam and reception light beam, will connect from adaptive liquid crystal optical phased array antenna The reception light beam received is sent to the first beam splitter, and will be sent to from the received transmitting light beam of the data transmission module adaptive Answer liquid crystal optical phased array antenna;First beam splitter is used to receive the reception light beam that the polarization beam apparatus is sent, and divides It is two parts, a copy of it is sent to external data receiving module, another is sent to the second beam splitter;Second beam splitter is used It is divided into two parts in the reception light beam for sending the first beam splitter, a copy of it is sent to capture detecting module, another is sent to Track detecting module;The capture detecting module finally detects reception light beam, obtains the first boresight error signal ecWith First received optical power Prc, and it is sent to the adaptive controller;The tracking detecting module is used to carry out reception light beam Detection, obtains the second boresight error signal efWith the second received optical power Prf, and it is sent to the adaptive controller.
It is preferably carried out mode according to one kind, is establishing described with first low orbit satellite in the handheld terminal In the case where establishing the third laser communication link in the case where one laser communication link or with second low orbit satellite Or in the case where with first synchronous satellite establishing the second laser communication link, the handheld terminal issues beacon signal And communication connection is established to establish local area network with having remaining communication equipment for determining position, the handheld terminal is as relaying Stand realize first low orbit satellite, second low orbit satellite and/or first synchronous satellite with it is described remaining communicate and set It is standby to establish communication connection.
According to a kind of preferred embodiment, the invention also discloses the optical communication method of a kind of satellite and handheld terminal, This method mainly includes that the Acquisition tracking and pointing device on handheld terminal is able to carry out posture changing to capture the first low orbit satellite The laser beam of transmitting, so that the handheld terminal can establish first laser communication link with the low orbit satellite;Institute State handheld terminal and in the case that first low orbit satellite establishes first laser communication link, first low orbit satellite is by institute The first information for stating handheld terminal is transferred to at least one synchronous satellite for determining position so that the synchronous satellite is sent out The laser beam penetrated can cover the handheld terminal, also, first low orbit satellite can will be established with the handheld terminal Second information of the first synchronous satellite of second laser communication link is transferred to the hand by the first laser communication link Terminal is held, so that the handheld terminal can select one of them that can establish the second laser with it based on self attributes First synchronous satellite of communication link and the posture for adjusting the Acquisition tracking and pointing device, thus, the handheld terminal The laser beam of the synchronous satellite transmitting can be captured to establish the second laser communication link whenever and wherever possible.
According to a kind of preferred embodiment, almanac data and the first information are based on not in first low orbit satellite In the case where at least one described synchronous satellite can be selected, first low orbit satellite is based on almanac data and the first information Selected second low orbit satellite is used as cannot establish the first laser link in first low orbit satellite with the handheld terminal In the case where the satellite of third laser communication link is established with the handheld terminal so that the handheld terminal can at any time with Ground and satellite, which are established, to be communicated to connect;Wherein, first low orbit satellite and second low orbit satellite establish communicate to connect so that The first information of the handheld terminal can at least partly be obtained by obtaining second low orbit satellite.
Detailed description of the invention
Fig. 1 is the rough schematic view of a preferred embodiment provided by the invention.
Reference signs list
10: the first low orbit satellites 20: synchronous satellite
30: the second the 20a: the first synchronous satellites of low orbit satellite
20b: the second synchronous satellite 40: handheld terminal
Specific embodiment
It 1 is described in detail with reference to the accompanying drawing.
It in description of the invention, term " first ", " second ", " third " and is used for description purposes only, and should not be understood as Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result, Two ", " third " and feature can explicitly or implicitly include one or more of the features.In description of the invention In, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can be machine Tool connection, is also possible to be electrically connected;It can be directly connected, two members can also be can be indirectly connected through an intermediary Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be Concrete meaning in bright.
Embodiment 1
The present embodiment also discloses a kind of handheld terminal, is also possible to a kind of laser communication terminal, is also possible to a kind of base In the laser communication terminal of low orbit satellite, it is also possible to a kind of satellite-based space-to-ground laser communications terminal, which can be by System of the invention and/or other alternative methods are realized.For example, by using each components in method of the invention Realize equipment of the invention.
The handheld terminal 40 of the present embodiment includes Acquisition tracking and pointing device (ATP).Preferably, Acquisition tracking and pointing can be with Refer to Acquisition, Tracking and Pointing, i.e. acquisition and tracking and aiming.Preferably, Acquisition tracking and pointing fills APT device, capture aiming tracker, acquisition and tracking and sighting system can also be known as, aim at acquisition and tracking device and/or catch by setting Obtain tracking and sighting device.For example, by taking the handheld terminal 40 and low orbit satellite 10 as an example, in order to low with this in handheld terminal 40 Rail inter-satellite realizes reliable communication, requires the handheld terminal 40 that can capture the light beam that the another low orbit satellite is sent first, referred to as For beacon beam, and the light beam is converged into detector or center of antenna, this process, which is referred to as, to be captured or capture body.Capture is completed Afterwards, a light beam is also issued as the handheld terminal of recipient 40, it is desirable that the light beam, which can be accurately directed toward, issues the low of beacon beam This process of rail satellite, which is referred to as, to be directed toward or aims at.After the satellite reception to this light beam for issuing beacon beam, also correspondingly to complete Acquisition procedure, so that the low orbit satellite and handheld terminal 40 establish communications status.It can for low orbit satellite and handheld terminal 40 In communications status, it is necessary to be always maintained at this accurate connection status, this process, which is referred to as, tracks or track mouth.
Preferably, as shown in Figure 1, Acquisition tracking and pointing device is able to carry out posture changing to capture the first low orbit satellite 10 The laser beam of transmitting, so that handheld terminal 40 can establish first laser communication link with the first low orbit satellite 10.Example Such as, the first low orbit satellite 10 can issue laser beam to the doubtful position of handheld terminal.Handheld terminal 40 or its user not When knowing its practical geographical location, Acquisition tracking and pointing device is able to carry out pose adjustment can be with the first low orbit satellite to seek it 10 establish the chance of first laser communication link.For example, handheld terminal 40 can be attempted based on abnormal conditions by pose adjustment Capture laser beam.When Acquisition tracking and pointing device has captured the laser beam of the first low orbit satellite 10 transmitting, acquisition and tracking is taken aim at The pose adjustment of standard apparatus terminates so that handheld terminal 40 can establish first laser communication link with low orbit satellite.
Preferably, in the case where handheld terminal 40 and the first low orbit satellite 10 establish first laser communication link, first Low orbit satellite 10 by the first information of handheld terminal 40 be transferred to determine position at least one synchronous satellite 20 so that The laser beam that synchronous satellite 20 emits can cover handheld terminal 40.Due to synchronous satellite 20 relative to geostationary on equator Sky has angular speed identical with earth rotation.And the first low orbit satellite 10 has the characteristics that high-speed mobile, it can only be with hand It holds terminal 40 and establishes the of short duration laser communication time, and if first laser communication link will be established with the first low orbit satellite 10 The first information of handheld terminal 40 transmit at least one synchronous satellite 20, then at least one synchronous satellite 20 can be at every moment Ground and handheld terminal 40, which are established, to be communicated to connect, this provides safety and timely ensure for the personnel of operation at sea and equipment. Preferably, in the case where handheld terminal 40 and the first low orbit satellite 10 establish first laser communication link, the first low orbit satellite 10 are transferred to the first information of handheld terminal 40 with determining position before the laser beam of its transmitting cannot cover handheld terminal The laser beam at least one transmitting set can cover the synchronous satellite 20 of handheld terminal 40.The first information mainly includes hand-held whole The location information and attribute information at end 40.Also, the first low orbit satellite 10 can will establish second laser with handheld terminal 40 and lead to Believe that the second information of the first synchronous satellite 20a of link is transferred to handheld terminal 40 by first laser communication link, so that Handheld terminal 40 can select one of them that can establish the first synchronous of second laser communication link with it based on self attributes Satellite 20a and the posture for adjusting Acquisition tracking and pointing device, thus, handheld terminal 40 can capture the first synchronous satellite 20a hair The laser beam penetrated to establish second laser communication link whenever and wherever possible.Synchronous satellite further includes the second synchronous satellite 20b, this kind of Satellite, which belongs to establish with handheld terminal 40, to be communicated to connect, but due to many, such as the second synchronous satellite 20b has Other business, also or it is established communication connection with handheld terminal 40 and the laser emitted is needed to need high-energy and other reasons, It is not the optimal synchronous satellite that communication connection is established with handheld terminal 40.
Preferably, there are many mathematical expression methods for the posture for determining object and position, such as can be with Eulerian angles, Euler-sieve At least one of Delhi lattice parameter, Rodrigo-jeep this vector, quaternary number and dual quaterion.
Preferably, this method may include: that optical frequency comb and pump signal are generated at satellite transmitter;At transmitter Idle signal of the modulating light frequency comb to generate data-signal and the phase conjugation as data-signal;Decay at transmitter and pumps Pu signal;The signal of communication with data-signal, idle signal and pump signal is sent from passing of satelline free space;It is receiving The signal of communication transmitted by the satellite reception at device, the signal of communication have data-signal, idle signal and the pumping of decaying letter Number;Amplification data signal and idle signal at phase-sensitive amplifier in the receiver;And/or the demodulated data signal at receiver With idle signal to extract data.
When handheld terminal 40 can not be synchronized the laser beam covering of the transmitting of satellite 20, handheld terminal 40 needs in time Communication connection in real time is promptly established with satellite.Preferably, almanac data and the first information are based in the first low orbit satellite 10 In the case where at least one synchronous satellite 20 cannot be selected, the first low orbit satellite 10 is based on almanac data and the first information selected the Two low orbit satellites 30 as in the case where the first low orbit satellite 10 cannot establish first laser link with handheld terminal 40 with hand The satellite that terminal 40 establishes third laser communication link is held, so that handheld terminal 40 can be communicated with satellite foundation whenever and wherever possible Connection.Preferably, the first low orbit satellite 10 and the second low orbit satellite 30 establish communication connection so that 30 energy of the second low orbit satellite Enough first information at least partly obtaining handheld terminal 40.
Preferably, before the first synchronous satellite 20a and handheld terminal 40 establish second laser communication link, the first low rail Satellite 10 is based on almanac data and the first information selectes at least one synchronous satellite 20 and establishes communication connection therewith, and first is low Rail satellite 10 receive synchronous satellite 20 feedback third information after determine the first synchronous satellite 20a as with handheld terminal 40 establish the synchronous satellite 20 of second laser communication link.Preferably, the first low orbit satellite 10 is receiving handheld terminal 40 instead When the first information of feedback, at least one synchronous satellite 20 can be selected as with handheld terminal 40 based on almanac data and establish second The alternate satellite of laser communication link.Lead at this point, the first low orbit satellite 10 is established in view of at least one selected synchronous satellite 20 Letter connects and the first information that handheld terminal 40 is fed back is transferred at least one synchronous satellite 20, at this point, at least one is synchronized Satellite 20 will generate third information based on the first information and in conjunction with current state.For example, third information include agree to or It disagrees and establishes second laser link with handheld terminal 40.Handheld terminal 40 is based on the third information decision and determines that first is synchronous Satellite 20a is as the satellite for establishing second laser link with handheld terminal 40.It not can determine that first is same in the first low orbit satellite 10 In the case that step satellite 20a can be as the synchronous satellite 20 for establishing second laser communication link with handheld terminal 40, first is low Rail satellite 10 is used as based on almanac data and selected second low orbit satellite 30 of the first information cannot be with hand in the first low orbit satellite 10 The satellite for establishing third laser communication link in the case that terminal 40 establishes first laser link with handheld terminal 40 is held, so that Handheld terminal 40 can be established whenever and wherever possible with satellite and be communicated to connect.
Preferably, the handheld terminal 40 in system of the invention, the first low orbit satellite 10 or the first synchronous satellite 20a can To establish laser communication link using green laser, blue at least one of laser and red laser laser.For example, 40 He of handheld terminal The first laser communication link that first low orbit satellite is established, the uplink for the data that handheld terminal 40 is sent to the first low orbit satellite 10 Link can use green laser, and the first low orbit satellite 10 can be swashed to the downlink that handheld terminal 40 sends data using red Light.And it is used for the communication connection between satellite, it can be established using electromagnetic wave.
Embodiment 2
The embodiment discloses a kind of mechanical module of handheld terminal 40 so that its can with implementing with track satellite or Synchronous satellite establishes communication connection.
Preferably, Acquisition tracking and pointing device passes through machine during capturing the laser beam of the first low orbit satellite 10 transmitting Tool constructing module carries out pose adjustment.Wherein, mechanical realization module includes supporting part and pose adjustment portion, Acquisition tracking and pointing dress It sets and is fixedly installed in supporting part, supporting part is flexibly connected with pose adjustment portion, so that Acquisition tracking and pointing device can be The azimuth and/or the elevation angle that Acquisition tracking and pointing device is adjusted under the action of pose adjustment portion, in Acquisition tracking and pointing device When capturing the laser beam of the first low orbit satellite 10 transmitting, pose adjustment portion stops action, and Acquisition tracking and pointing device will Azimuth and the elevation angle, which are passed, is transferred to the first low orbit satellite 10 by first laser communication link.First low orbit satellite 10 being capable of base The position of handheld terminal 40 is finally inversed by azimuth and the elevation angle and can be based on first laser communication link to handheld terminal 40 Transmit information.Preferably, pose adjustment portion includes at least one of hydraulic module and gear module, in adaptive controller Communication connection.
Preferably, azimuth and the elevation angle are transferred at least one synchronous satellite 20 by the first low orbit satellite 10, at least one Synchronous satellite 20 is based on azimuth, the elevation angle and its location information generation third information and feeds back to the first low orbit satellite 10, and first is low Rail satellite 10 selectes the first synchronous satellite 20a as the satellite for establishing second laser communication link with handheld terminal 40 and by the The third information of one synchronous satellite 20a feedback is transferred to handheld terminal 40,40 base of handheld terminal by first laser communication link In third information by pose adjustment portion to adjust deflection and/or the elevation angle so that Acquisition tracking and pointing device can capture the The laser beam that one synchronous satellite 20a occurs is to establish second laser with the first synchronous satellite 20a to obtain handheld terminal 40 Communication link.
Preferably, Acquisition tracking and pointing device includes data transmission module, polarization beam apparatus, the first beam splitter, second point Beam device, capture detecting module, tracking detecting module, liquid crystal optical phased array antenna and adaptive controller.Data transmission module It is θ for generating beam divergence angleM1Optical signal and be sent to polarization beam apparatus.Polarization beam apparatus is used for transmitting light beam and connects It receives light beam to be separated, sends the first beam splitter for the reception light beam received from adaptive liquid crystal optical phased array antenna, And adaptive liquid crystal optical phased array antenna will be sent to from the received transmitting light beam of data transmission module.First beam splitter is used for The reception light beam that polarization beam apparatus is sent is received, and is divided into two parts, a copy of it is sent to external data receiving module, another It is sent to the second beam splitter.Second beam splitter is used to for the reception light beam that the first beam splitter is sent being divided into two parts, a copy of it hair It is sent to capture detecting module, another is sent to tracking detecting module.Capture detecting module finally detects reception light beam, Obtain the first boresight error signal ec(t) and the first received optical power Prc, and it is sent to adaptive controller.Track detecting module For detecting to reception light beam, the second boresight error signal e is obtainedf(t) and the second received optical power Prf, and be sent to certainly Adaptive controller.
Embodiment 3
The present embodiment discloses a kind of system that the optical communication system based on handheld terminal 40 and low orbit satellite realizes navigation.
Preferably, handheld terminal 40 in the case where establishing first laser communication link with the first low orbit satellite 10 or with It is logical that second laser is established in the case that second low orbit satellite 20 establishes third laser communication link or with the first synchronous satellite 20a In the case where believing link, the first low orbit satellite 10 or the second low orbit satellite 20 or the first synchronous satellite can be by the positions of handheld terminal 40 Confidence breath is transferred at least one of GPS satellite or big-dipper satellite, and at least one of GPS satellite or big-dipper satellite will be based on The location information of handheld terminal 40 is provided to navigation information, and navigation information is through first laser communication link or second laser communication Link or third laser communication link are transferred to handheld terminal 40.
Embodiment 4
What the present embodiment disclosed that a kind of optical communication system based on handheld terminal 40 and low orbit satellite implements emergency management and rescue is System.
Preferably, in handheld terminal 40 in the case where establishing first laser communication link with the first low orbit satellite 10 or Second laser is established in the case where establishing third laser communication link with the second low orbit satellite 20 or with the first synchronous satellite 20a In the case where communication link, handheld terminal 40 issues beacon signal and communicates with having remaining communication equipment for determining position foundation Connection to establish local area network, handheld terminal 40 as relay station realize the first low orbit satellite 10, the second low orbit satellite 20 and/or First synchronous satellite 20a and remaining communication equipment, which are established, to be communicated to connect.This method answers first aid particularly suitable for marine It helps.After having handheld terminal 40 and satellite to establish communication, handheld terminal 40 can establish connection with other communication equipments, establish To put the emergency system in the face of arriving, these information can be fed back to intelligence after the laser beam for receiving the transmitting of handheld terminal 40 by satellite Intelligent terminal, to realize emergency management and rescue.
Embodiment 5
The present embodiment discloses the optical communication method of a kind of satellite and handheld terminal 40.
Preferably, the Acquisition tracking and pointing device on handheld terminal 40 is able to carry out posture changing to capture the first low rail and defend The laser beam that star 10 emits, so that handheld terminal 40 can establish first laser communication link with low orbit satellite;Hand-held In the case that terminal 40 and the first low orbit satellite 10 establish first laser communication link, the first low orbit satellite 10 is by handheld terminal 40 The first information be transferred to determine position at least one synchronous satellite 20 so that synchronous satellite 20 emit laser beam Handheld terminal 40 can be covered, also, the first low orbit satellite 10 can will establish second laser communication link with handheld terminal 40 The second information of the first synchronous satellite 20a handheld terminal 40 is transferred to by first laser communication link so that it is hand-held eventually End 40 can select one of them that can establish the first synchronous satellite 20a of second laser communication link with it based on self attributes And adjust the posture of Acquisition tracking and pointing device, thus, handheld terminal 40 can capture synchronous satellite 20 transmitting laser beam with Second laser communication link is established whenever and wherever possible.
Preferably, at least one synchronous satellite cannot be selected by being based on almanac data and the first information in the first low orbit satellite 10 In the case where 20, the first low orbit satellite 10 is based on almanac data and the first information selectes the second low orbit satellite 30 as low first Rail satellite 10 cannot be established with handheld terminal 40 and establish third laser communication with handheld terminal 40 in the case where first laser link The satellite of link communicates to connect so that handheld terminal 40 can be established with satellite whenever and wherever possible;Wherein, the first low orbit satellite 10 Communication connection is established so that the second low orbit satellite 30 can at least partly obtain handheld terminal 40 with the second low orbit satellite 30 The first information.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. a kind of handheld terminal based on low orbit satellite optical communication system, including Acquisition tracking and pointing device, the acquisition and tracking Sighting device is able to carry out posture changing to capture the laser beam of the first low orbit satellite (10) transmitting, so that the hand-held end End (40) can establish first laser communication link with first low orbit satellite (10), which is characterized in that at the hand-held end In the case that end (40) and first low orbit satellite (10) establish first laser communication link, first low orbit satellite (10) The first information of the handheld terminal (40) is transferred to tool before the laser beam of its transmitting cannot cover the handheld terminal There is the laser beam of at least one transmitting of determining position that can cover the synchronous satellite (20) of the handheld terminal (40),
And first low orbit satellite (10) will establish the of second laser communication link with the handheld terminal (40) Second information of one synchronous satellite (20a) is transferred to the handheld terminal (40) by the first laser communication link, so that Obtaining the handheld terminal (40) can select one of them that can establish the second laser communication chain with it based on self attributes First synchronous satellite (20a) on road and the posture for adjusting the Acquisition tracking and pointing device, thus the handheld terminal (40) laser beam of the first synchronous satellite (20a) transmitting can be captured to establish the second laser communication chain whenever and wherever possible Road forms emergency communication link.
2. handheld terminal as described in claim 1, which is characterized in that be based on almanac data in first low orbit satellite (10) In the case where at least one described synchronous satellite (20) cannot be selected with the first information, the first low orbit satellite (10) base The second low orbit satellite (30) are selected as cannot be in first low orbit satellite (10) in almanac data and the first information The handheld terminal (40) establishes in the case where the first laser link that third laser is established with the handheld terminal (40) is logical Believe the satellite of link, is communicated to connect so that the handheld terminal (40) can be established with satellite whenever and wherever possible;
Wherein, first low orbit satellite (10) and second low orbit satellite (30) establish communication connection so that described second Low orbit satellite (30) can obtain the first information of the handheld terminal (40) at least partly with can be described first Low orbit satellite (10) second low orbit satellite (30) when the laser beam of its transmitting cannot cover the handheld terminal (40) The third laser communication link can be established with the handheld terminal (40).
3. handheld terminal as claimed in claim 1 or 2, which is characterized in that in first synchronous satellite (20a) and the hand It holds terminal (40) to establish before the second laser communication link, first low orbit satellite (10) is based on almanac data and described The first information selectes at least one described synchronous satellite (20) and establishes communication connection therewith, and first low orbit satellite (10) exists Receive determine after the third information of the synchronous satellite (20) feedback first synchronous satellite (20a) as with the hand Hold the synchronous satellite (20) that terminal (40) establishes the second laser communication link;
The handheld terminal (40) not can determine that first synchronous satellite (20a) can as with the handheld terminal (40) In the case where the synchronous satellite (20) for establishing the second laser communication link, first low orbit satellite (10) is based on star Count one by one evidence and the first information select the second low orbit satellite (30) as first low orbit satellite (10) cannot with it is described Handheld terminal (40) is established and establishes third laser communication chain with the handheld terminal (40) in the case where the first laser link The satellite on road communicates to connect so that the handheld terminal (40) can be established with satellite whenever and wherever possible.
4. the handheld terminal as described in one of preceding claims, which is characterized in that the Acquisition tracking and pointing device is capturing Pose adjustment is carried out by mechanical realization module during the laser beam of first low orbit satellite (10) transmitting,
Wherein, the mechanical realization module includes supporting part and pose adjustment portion, and the Acquisition tracking and pointing device is fixedly mounted In the supporting part, the supporting part is flexibly connected with the pose adjustment portion, so that the Acquisition tracking and pointing device The azimuth and/or the elevation angle that the Acquisition tracking and pointing device can be adjusted under the action of the pose adjustment portion, in institute When stating Acquisition tracking and pointing device and capturing the laser beam of first low orbit satellite (10) transmitting, the pose adjustment portion stops Activity, and the azimuth and the elevation angle are passed and pass through the first laser communication link by the Acquisition tracking and pointing device It is transferred to first low orbit satellite (10);
First low orbit satellite (10) can be finally inversed by the handheld terminal (40) based on the azimuth and the elevation angle Position and can based on the first laser communication link to the handheld terminal (40) transmit information.
5. the handheld terminal as described in one of preceding claims, which is characterized in that first low orbit satellite (10) will be described Azimuth and the elevation angle are transferred at least one synchronous satellite (20), at least one described synchronous satellite (20) is based on the side Parallactic angle, the elevation angle and its location information generate the third information and feed back to first low orbit satellite (10), and described first It is logical as the second laser is established with the handheld terminal (40) that low orbit satellite (10) selectes first synchronous satellite (20a) Believe the satellite of link and communicates the third information that first synchronous satellite (20a) is fed back by the first laser Link is transferred to the handheld terminal (40),
The handheld terminal (40) is based on the third information by the pose adjustment portion to adjust the deflection and/or face upward Angle is so that the Acquisition tracking and pointing device can capture the laser beam that first synchronous satellite (20a) occurs to obtain The handheld terminal (40) can establish the second laser communication link with first synchronous satellite (20a).
6. the handheld terminal as described in one of preceding claims, which is characterized in that the handheld terminal (40) is with described It is established in the case that one low orbit satellite (10) establishes the first laser communication link or with second low orbit satellite (20) The second laser communication chain is established in the case where the third laser communication link or with first synchronous satellite (20a) In the case where road,
First low orbit satellite (10) or second low orbit satellite (20) or first synchronous satellite described can will be held The location information of terminal (40) is transferred at least one of GPS satellite or big-dipper satellite,
At least one of the GPS satellite or the big-dipper satellite provide the location information based on handheld terminal (40) to leading Boat information, the navigation information is through the first laser communication link or second laser communication link or third laser communication link It is transferred to the handheld terminal (40).
7. the handheld terminal as described in one of preceding claims, which is characterized in that the Acquisition tracking and pointing device includes number According to transmitting module, polarization beam apparatus, the first beam splitter, the second beam splitter, capture detecting module, tracking detecting module, liquid crystal light Learn phased array antenna and adaptive controller;
The data transmission module is θ for generating beam divergence angleM1Optical signal and be sent to the polarization beam apparatus;
The polarization beam apparatus is used to separate transmitting light beam and reception light beam, will be from adaptive liquid crystal optical phased array day The reception light beam that line receives is sent to the first beam splitter, and will be sent to from the received transmitting light beam of the data transmission module Adaptive liquid crystal optical phased array antenna;
First beam splitter is used to receive the reception light beam that the polarization beam apparatus is sent, and is divided into two parts, a copy of it hair It is sent to external data receiving module, another is sent to the second beam splitter;
Second beam splitter is used to for the reception light beam that the first beam splitter is sent being divided into two parts, and a copy of it is sent to capture and visits Module is surveyed, another is sent to tracking detecting module;
The capture detecting module finally detects reception light beam, obtains the first boresight error signal ec(t) it is received with first Optical power Prc, and it is sent to the adaptive controller;
The tracking detecting module is used to detect reception light beam, obtains the second boresight error signal ef(t) it is received with second Optical power Prf, and it is sent to the adaptive controller.
8. the handheld terminal as described in one of preceding claims, which is characterized in that the handheld terminal (40) with it is described It is built in the case that first low orbit satellite (10) establishes the first laser communication link or with second low orbit satellite (20) In the case where having found the third laser communication link or the second laser is established with first synchronous satellite (20a) to communicate In the case where link,
The handheld terminal (40) issues beacon signal and uses with having remaining communication equipment for determining position to establish communication connection To establish local area network, the handheld terminal (40) realizes first low orbit satellite (10), the second low rail as relay station Satellite (20) and/or first synchronous satellite (20a) and remaining described communication equipment, which are established, to be communicated to connect.
9. the optical communication method of a kind of satellite and handheld terminal (40), which is characterized in that the acquisition and tracking on handheld terminal (40) Sighting device is able to carry out posture changing to capture the laser beam of the first low orbit satellite (10) transmitting, so that the hand-held end End (40) can establish first laser communication link with first low orbit satellite (10);
It is described in the case where first laser communication link is established in the handheld terminal (40) and first low orbit satellite (10) The first information of the handheld terminal (40) is transferred to at least one synchronization for determining position by the first low orbit satellite (10) Satellite (20) so that the synchronous satellite (20) transmitting laser beam can cover the handheld terminal (40),
Also, first low orbit satellite (10) can will establish the of second laser communication link with the handheld terminal (40) Second information of one synchronous satellite (20a) is transferred to the handheld terminal (40) by the first laser communication link, so that Obtaining the handheld terminal (40) can select one of them that can establish the second laser communication chain with it based on self attributes First synchronous satellite (20a) on road and the posture for adjusting the Acquisition tracking and pointing device,
To which the handheld terminal (40) can capture the laser beam of the synchronous satellite (20) transmitting to establish institute whenever and wherever possible State second laser communication link.
10. method as claimed in claim 9, which is characterized in that first low orbit satellite (10) be based on almanac data and In the case that the first information cannot select at least one described synchronous satellite (20), first low orbit satellite (10) is based on Almanac data and the first information selected second low orbit satellite (30) are used as cannot be with institute in first low orbit satellite (10) It states handheld terminal (40) and establishes and establish third laser communication with the handheld terminal (40) in the case where the first laser link The satellite of link communicates to connect so that the handheld terminal (40) can be established with satellite whenever and wherever possible;
Wherein, first low orbit satellite (10) and second low orbit satellite (30) establish communication connection so that described second Low orbit satellite (30) can at least partly obtain the first information of the handheld terminal (40).
CN201811622149.8A 2018-12-28 2018-12-28 Handheld terminal based on low-earth-orbit satellite optical communication system Active CN109787677B (en)

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CN202110421696.5A CN113098605A (en) 2018-12-28 2018-12-28 Hand-held terminal of optical communication system
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1193854A (en) * 1996-11-27 1998-09-23 Trw公司 Multiple altitude satellite relay system and method
US6029935A (en) * 1998-01-22 2000-02-29 Trw Inc. Method for adding a geostationary component to a non-geostationary satellite network
US20040151504A1 (en) * 2003-01-31 2004-08-05 Lockheed Martin Space Systems Company Multi-beam laser terminal and method
CN101873181A (en) * 2010-06-13 2010-10-27 中国科学院上海光学精密机械研究所 Laser coherent data transmission channel simulation testing device
US20130128271A1 (en) * 2011-11-17 2013-05-23 The Aerospace Corporation System and apparatus for monitoring concentration of greenhouse gas
CN108923838A (en) * 2018-06-14 2018-11-30 上海卫星工程研究所 The master-salve distributed GEO communication satellite system framework of common rail

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1193854A (en) * 1996-11-27 1998-09-23 Trw公司 Multiple altitude satellite relay system and method
US6029935A (en) * 1998-01-22 2000-02-29 Trw Inc. Method for adding a geostationary component to a non-geostationary satellite network
US20040151504A1 (en) * 2003-01-31 2004-08-05 Lockheed Martin Space Systems Company Multi-beam laser terminal and method
CN101873181A (en) * 2010-06-13 2010-10-27 中国科学院上海光学精密机械研究所 Laser coherent data transmission channel simulation testing device
US20130128271A1 (en) * 2011-11-17 2013-05-23 The Aerospace Corporation System and apparatus for monitoring concentration of greenhouse gas
CN108923838A (en) * 2018-06-14 2018-11-30 上海卫星工程研究所 The master-salve distributed GEO communication satellite system framework of common rail

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