CN201113984Y - Short wave reception optical fiber transmission system - Google Patents
Short wave reception optical fiber transmission system Download PDFInfo
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- CN201113984Y CN201113984Y CNU2007201735049U CN200720173504U CN201113984Y CN 201113984 Y CN201113984 Y CN 201113984Y CN U2007201735049 U CNU2007201735049 U CN U2007201735049U CN 200720173504 U CN200720173504 U CN 200720173504U CN 201113984 Y CN201113984 Y CN 201113984Y
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Abstract
The utility model relates to a shortwave receiving optical fiber transmission system, which aims to solve the problem of shortage of a safe and reliable transmission means between a receiver and an antenna which have long distance in the prior shortwave receiving system. The utility model comprises a plurality of parallel remote-end channel processing units which are provided with antennas, wherein, the remote-end channel processing units are respectively and commonly connected with a digital switching unit through respectively equipped cables; the digital switching unit is then connected with a plurality of receivers corresponding to a plurality of remote-end channel processing units; the remote-end channel processing units comprise protective circuits, filters, LNAs, AGC circuits, broad band and narrow band signal processors, AGC circuits and photoelectrical converters which are connected with cables from the antennas. The shortwave receiving optical fiber transmission system has the advantages that: the antennas can be far away from severe electromagnetic environment; the communication quality is good; the reliability is strong; a plurality of pairs of antennas can simultaneously and commonly use a plurality of receivers; cable joints can be greatly reduced; the volume is small; the weight is light; convenience is brought to communication dispatching and monitoring.
Description
Technical field
The utility model relates to a kind of short-wave reception device, particularly relates to a kind of short-wave receiver fiber optic transmission system.
Background technology
As everyone knows, short-wave receiver is to receive radio electromagnetsm ripple signal from the short-wave receiver antenna, is sent to receiver by high frequency cable or balanced line.High frequency cable has bigger loss in transmission course, so can't make long-distance transmissions, therefore, collection of letters antenna all is arranged near the receiver.In military use, in case antenna is detected discovery by the enemy, the receving station position just exposes easily.And when receving station was arranged at the tunnel, cable was generally longer, and receptivity is reduced greatly.When adopting the balanced line transmission, though loss is less, can't enter the tunnel, the also handy high frequency cable of tunnel part.The shortcoming of balanced line transmission be blow, rain, transmission performance reduces when snowing, transmission line damages easily, needs frequent maintaining.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned defective of prior art, provide a kind of antenna that can make away from abominable electromagnetic environment, good communication quality, good reliability, plurality of antennas is shared multi-section receiver simultaneously, can significantly reduce cable joint, volume is little, in light weight, makes things convenient for the short-wave receiver fiber optic transmission system of communication scheduling and monitoring.
For achieving the above object, the utility model short-wave receiver fiber optic transmission system comprises a plurality of far-end channel banks of being furnished with antenna arranged side by side, the far-end channel bank connects digital switching element by the optical cable that is equipped with separately respectively more jointly, and digital switching element connects many receivers corresponding with a plurality of far-end channel banks again.Adopt the mode of Optical Fiber Transmission, the distance in reception antenna and collection of letters radio station can reach more than the 20km; Adopt LSI device to realize network array, reception antenna and collection of letters radio station network array switch convenient rapidly.So design has and can make antenna away from abominable electromagnetic environment, good communication quality, and good reliability, plurality of antennas is shared multi-section receiver simultaneously, can significantly reduce cable joint, and volume is little, in light weight, makes things convenient for communication scheduling and monitoring advantage.
As optimization, the far-end channel bank comprises protective circuit, filter, LNA (low noise amplifier), agc circuit (intermediate frequency amplifier module), wide and narrow strip signal processor, agc circuit (intermediate frequency amplifier module), the optical-electrical converter that connects optical cable from antenna successively; The wide and narrow strip signal processor also is connected optical cable by far-end passback control module with optical-electrical converter simultaneously.Employing is guaranteed the accurate reduction of primary signal up to the A/D sampling precision of 14bit.System adopts strict shielding protection; circuit adopts overvoltage protection mechanism; protective circuit guarantees that equipment is when being impacted by large-signal; automatically protection equipment does not cause permanent damage: filter, low noise amplifier and multistage automatic gain control loop are handled the quality of guaranteeing received signal and the sensitivity of system to signal.Native system has adopted wide/arrowband dual-mode working mode, interference ratio hour adopts broadband mode in band, and the signal of common antenna can provide the signal of different frequent points simultaneously, is fit to the full frequency band reception of receving station; When interference ratio is serious in band, adopt narrow band mode, disturb in the inhibition zone well, improve the signal to noise ratio of system, guarantee the receptivity of receving station.The signal of handling through early stage is transformed into light signal by the simulated light transmitter module with the signal of telecommunication, realizes optical transmission.The passback control module realizes the control of mode of operation and the monitoring of operating state, but and reserves function such as separate data channels expanded images transmission.
As optimization, digital switching element comprises many groups of optical-electrical converter and the AD converter that link to each other successively that connect optical-electrical converter by optical cable, and AD converter connects the DA transducer of a plurality of connection receivers again by the intelligent array Switching Module; Also comprise the local side passback control module that is connected far-end passback control module by optical cable with optical-electrical converter, local side passback control module connects intelligent array Switching Module and computer by the integrated management control module.Signal in the local side Optical Fiber Transmission reverts to the signal of telecommunication through photoelectric conversion module, convert digital signal to and give the intelligent array Switching Module by high speed, high-precision AD modular converter again, thereby the monitoring software on the computer is realized the function of exchange of antenna and receving station according to setting in advance wicked pattern control intelligent array Switching Module, reverts to the receiver that the signal of telecommunication is exported to receving station by the DA modular converter again.The maximum switching capacity 16 * 16 of intelligence optical fiber shortwave array antenna system, the quantity of receving station can be expanded according to user's needs.Local side passback control module can be gathered the operating state and the warning information of remote equipment constantly, and send the integrated management control module to and be presented in the message window, the configuration information of monitoring software can also be sent to the function that remote equipment is realized Long-distance Control by monitoring software.
As optimization, the integrated management control module connects computer by Ethernet or RS232.So design, dependable performance.
As optimization, the far-end channel bank is installed on the aerial truck that is equipped with antenna.So design is convenient to motor-driven.
As optimization, the far-end channel bank is furnished with solar cell formula power supply or mains supply.So design, the former, Maintenance free, simple and easy to do.
It adopts the method for Optical Fiber Transmission, with radio station command centre (digital switching element and Duo Tai receiver) is core, a plurality of long-range reception antennas are formed tens kilometers to up to a hundred kilometers star-like aerial array networks of radius, draw back the distance of reception antenna system and radio station command centre, effectively increase coverage, improve disguise, confidentiality, interference free performance and the anti-precision strike capability of communication network.
In command centre, the signal that adopts high speed, high-precision A/D, D/A converter and LSI device etc. that many antennas are received carries out digital array to be handled and quality analysis, and the signal after the reduction sends corresponding collection of letters radio station to the most at last.System monitoring, control are undertaken by network management module by computer, the coupling that can carry out reception antenna and collection of letters radio station network array is easily and quickly switched selection: simultaneously, intelligent channel bank to far-end reception antenna end carries out in real time, accurately telemonitoring and control, fully ensure the unimpeded of effective short-wave signal transmission link, reserve the extended capability of real time monitoring far-end battlefield integrated environment.
The operational management of short-wave receiver fiber optic transmission system is all carried out at the intelligent network management platform, the intelligent network management platform provides the network management system based on windows platform or Linux operating platform, graphical friendly human-computer interaction interface, realization that can be convenient, flexible is to the comprehensive management and the control of optical-fiber intelligent array short-wave antenna transmission system.By the intelligent network management platform, the network array that reception antenna and collection of letters radio station are formed makes up switching arbitrarily; In different signal environments, in real time remote equipment is carried out that wide/narrow band mode switches, gain-adjusted: the operating state of detection system in real time.
System's characteristics:
1, long transmission distance: the distance of antenna and receiver can reach more than 15 kilometers even arrive kilometers up to a hundred.2, system sensitivity height: receiving sensitivity is less than-106dBm.3, dynamic range is big: reach 100dB.4, anti-blocking anti-tamper, short circuit input when strong signal input (greater than 38dBm), protection receiving end equipment.5, multiple supply power mode: 220V civil power, solar energy (direct current).6, far-end is controlled in real time: adopt the passback controlling mechanism, digital switching element can be monitored the operating state of destination module in real time, controls in real time that receiving end is wide, arrowband work.7, reserve expanded function.8, sampling precision height: adopt high speed, high-precision A/D converter, guarantee the real-time and the low distortion of signal.9, the facility environment adaptive capacity is strong, and far-end is that design is used in the field of hermetically sealed, full-shield, low-power consumption, and simple cable connects and can open, need not be daily on duty.10, easy to use: the daily use of system only needs computer to get final product, and by the graphic interface of intelligent network management platform, carries out system's control and status monitoring, and is succinct, convenient.
Use occasion has:
1, command post's communication center: collection of letters antenna can be away from more than the receiver 15Km, and the antenna arrangement scope enlarges greatly, and antenna can be arranged in hidden place away from cities and towns and the big abominable electromagnetic environment of interference source;
2, intercept army: antenna can be placed on the mountain and tens kilometers scope, improves and intercepts effect and reliability, can move the good place of level land living condition to from high mountain and intercept army, improves army life, improves its combat capabilities:
3, mobile communication: be equipped with collection of letters aerial truck specially, make the antenna dispersed placement away from receiving center, improve reception, increase reliability, receiving center is safer simultaneously:
4, large ship: in the abominable electromagnetic environment in naval vessel, adopt Optical Fiber Transmission, can reduce the interference in the transmission course, avoid interfering with each other between transmission line, improve electromagnetic environment.
Remote, the overlength distance connectivity problem of collection of letters radio station and reception antenna have been solved; Eliminate the electromagnetic interference between the feeder, existing collection of letters radio station of upgrading and reception antenna are the aerial network array, can utilize computer and communication network, achieve a butt joint and receive the remote real-time monitoring of antenna, realize digital crossover and intelligent management that some reception antennas are connected with collection of letters radio station.
After adopting technique scheme, the utility model short-wave receiver fiber optic transmission system optical cable can be buried underground, more reliable.Can make antenna away from abominable electromagnetic environment after adopting Optical Fiber Transmission, antenna can be arranged in more than tens kilometers even up to a hundred kilometers, and it is relatively quietly local to be erected at the antenna signal of telecommunication, improves communication quality, long transmission distance.Because wide apart between antenna, ruined possibility is less simultaneously for antenna, has therefore mentioned communication reliability.After adopting the exchange of array numeral to distribute, the array easy switching, one pair of antenna can provide 16 receivers to use simultaneously, also can be more.16 pairs of antennas are selected for use for a receiver simultaneously, communication reliability, and communication quality also improves a lot.The communication support ability improves a lot.Can reduce cable joint after adopting the exchange of array numeral to distribute, improve reliability.Volume, weight also greatly alleviate simultaneously.This equipment available computers is conveniently used in the monitoring of communication scheduling chamber.Adopt low noise amplifier, the receiving sensitivity height.Adopt multistage agc circuit, dynamic range is big.Employing is guaranteed the accurate reduction of primary signal up to the A/D sampling precision of 14bit, and distorted signals is little.System adopts strict shielding protection, and circuit adopts overvoltage protection mechanism, and when impacted by large-signal, protection does not cause permanent damage, good reliability automatically.Adopt broadband/arrowband dual channel mode, anti-electromagnetic interference capability is strong, when guaranteeing to disturb signal in band, also can accurately receive, and it is good to suppress jamming performance.The facility environment adaptive capacity is strong, and far-end is that design is used in the field of hermetically sealed, full-shield, low-power consumption, and simple cable connects and can open, need not be daily on duty, and equipment is safeguarded simple.System's line is all rearmounted, and connection and running status intuitively show in the system front by the high-brightness LED indicator light, and simple and direct-viewing operation is easy to use.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model short-wave receiver fiber optic transmission system;
Fig. 2 is the circuit theory diagrams of far-end channel bank in the utility model short-wave receiver fiber optic transmission system;
Fig. 3 is the circuit theory diagrams of digital switching element in the utility model short-wave receiver fiber optic transmission system.
Embodiment
Illustrate further below in conjunction with accompanying drawing and instantiation:
As shown in the figure, the utility model short-wave receiver fiber optic transmission system comprises a plurality of far-end channel banks 1 of being furnished with antenna arranged side by side, far-end channel bank 1 connects digital switching element 2 by the optical cable that is equipped with separately respectively more jointly, and digital switching element 2 connects many receivers 3 corresponding with a plurality of far-end channel bank 1 again.Far-end channel bank 1 is furnished with solar cell formula power supply or mains supply.
Far-end channel bank 1 comprises protective circuit 11, filter 12, LNA (low noise amplifier), agc circuit 13 (dynamic range reaches the intermediate frequency amplifier module of 100dB), wide and narrow strip signal processor 14, agc circuit 13 (the intermediate frequency amplifier module of receiving sensitivity≤1uV), the optical-electrical converter 15 that connects optical cable from antenna successively; Wide and narrow strip signal processor 14 also is connected optical cable by far-end passback control module 16 with optical-electrical converter 15 simultaneously.
Digital switching element 3 comprises many groups of optical-electrical converter 15 and the AD converter 31 that link to each other successively that connect optical-electrical converter 15 by optical cable, and AD converter 31 connects the DA transducer 33 of a plurality of connection receivers again by intelligent array Switching Module 32; Also comprise the local side passback control module 34 that is connected far-end passback control module 16 by optical cable with optical-electrical converter 15, local side passback control module 16 connects intelligent array Switching Module 32 and computer 36 by integrated management control module 35.Wherein integrated management control module 35 connects computer 36 by Ethernet 37 or RS232.
Its local side exhibition by combination method control processing system is divided into public module and four unit module groups such as power supply, network management, the unit module group can be equipped with as required, corresponding four far-ends intelligence short wave channel processing unit of each unit module group and the comprehensive power supply unit of far-end, each far-end intelligence short wave channel processing unit and the corresponding reception antenna of the comprehensive power supply unit of far-end.The heap(ed) capacity of short-wave receiver fiber optic transmission system is made up of a local side exhibition by combination method controlled processing unit, 16 far-ends intelligence short wave channel processing unit and the comprehensive power supply unit of far-end, can make 16 long-range reception antennas of any corresponding far-end in radio station more than 16 ones of local side, thereby form a shortwave array antenna system based on remote Optical Fiber Transmission.
Certainly, the far-end channel bank can also be installed on the aerial truck that is equipped with antenna.
Technical parameter is as follows:
(12dBS/N)；
1, optical parameter
Light source: FB laser port; Wavelength: 1310 ± 20nm; Fiber type: single mode; Light emitting power: 2mw; Light passes distance: as requested, 0～20Km (centre add image intensifer can to tens kilometers to kilometers up to a hundred); Optical fiber interface: FC/APC; Optical cable: the military optical cable of three cores (having two copper cash).
2, RF parameter
Frequency range: 1.5MHz～30MHz; Band is outer to be suppressed: wide band system (full frequency band)＞40dB, arrowband mode (± 100KHz)＞60dB; Sensitivity :≤1 μ V (12dBS/N); Harmonic wave suppresses: be better than 50dB (5dBm input); Crosstalk: be better than 55dB (20dBm input); ADC conversion resolution: 14bit; ADC switching rate: 80MSPS; Input and output impedance: 50 Ω.
3, digital switching element
Exchange capacity: 1 pair of antenna of 16 * 16 (can expand by customer requirements) can offer 16 receivers simultaneously, and 16 pairs of antennas can select best antenna to use for receiver simultaneously.Crosstalk:＜-60dB
4, supply power mode: receiver unit adopts 220V ± 10% or solar powered (unglazed according to maximum duration＞40 hour, 10 years service lives)
5, power consumption
Receiver unit: 5W; Digital switching element: maximum 120W, minimum 30W.
6, working environment
Temperature: outdoor one 30～C～+ 65 ℃, indoor 1 ℃ one+60 ℃; Storage temperature: one 50 ℃ one+70 ℃; Relative humidity: 10% one 95%; Atmospheric pressure: 70～-106Kpa.
It has following characteristics:
1. long transmission distance: adopt the mode of Optical Fiber Transmission, the distance of antenna and receiver can reach more than 20 kilometers.
2. highly sensitive: receiving sensitivity adopts the mode of multistage automatic gain control loop cascade less than-106dBm, receives dynamic range and can reach 100dB.
3. good reliability: adopt front-end protection circuit mechanism; in strong signal input (greater than 38dBm), close reception, in order to avoid receiver is subjected to nonvolatil destruction; improve the reliability of remote equipment, but can also realize the 20dBm controlling attenuation by the central network management and control system of local side.
4. supply power mode is flexible: can adopt multiple mode that the power supply power supply of far-end channel processing equipment is provided for the power supply of remote equipment.Supply power mode comprises: modes such as 220V mains-supplied, solar cell for supplying power, local side Long-distance Control diesel-electric set electric supply, the power supply of optical cable far-end, the power supply of storage battery backup mode below all can be provided, and the scene can be selected one or more compound modes according to actual needs flexibly.Adopt the 220V mains-supplied to be the simplest supply power mode; Adopt solar cell for supplying power, after electricity has been full of, can be continuous operation under the rainy weather 7 days; Adopt diesel-electric set electric supply, can send remote control signal, start or close diesel generating set by local side control centre; Adopt the power supply of optical cable far-end, the working power of remote equipment directly is provided by optical cable by the power supply of local side.
5. strong anti-interference performance: system adopts broadband and the two kinds of mode of operations in arrowband.Interference ratio hour adopts broadband mode in band, and the signal of common antenna can provide the signal of different frequent points simultaneously, realizes the full frequency band reception; When interference ratio is serious in band, adopt narrow band mode, the interference signal in the rejection band is guaranteed the reliable communication of useful signal well.
6. remote live control: adopt the mechanism of passback control, local side can be monitored the operating state of remote end module in real time by the control signal passage, and can control the mode of operation of remote equipment in real time.
7. function expansibility is strong: expanded function and the letter signal remote transmission expanded function of reserving long-range comprehensively monitoring.Reserve long-range wideband data passage, can satisfy the real-time transmission of antenna field picture control and environmental monitoring data, realize the expanded function of long-range comprehensively monitoring; Reserve letter signal remote transmission extended channel, the signal transmission passage in the radio station of posting a letter can be provided.
8. signal sampling precision height: adopt high speed, the high-precision A/D converter of 14bit sampling precision that analog signal conversion is become digital signal for original aerial signal, guarantee the real-time and the low distortion of signal processing.
9. signal output driving force is strong: the D/A converter by high driving ability converts digital signal to analog signal and exports to receiver, and output signal level is big, and the load driving ability is stronger, can connect the multi-section receiver by distributor.
10. the system upgrade ability is strong: the local side of whole system and far-end adopt standardization, modularized design, can select radio station and arrangement of antennas quantity flexibly according to the field engineering needs.
11. mounting means is flexible: CMTS can be installed in 19 inches racks of standard or be placed on the desktop dual mode; The far-end channel bank adopts open-air type design, can independently be affiliated on mast, also can be placed in the outdoor crate of ground, perhaps is positioned in the bunker.
12. the remote equipment protective capacities is strong: far-end channel bank volume is little, and core cell adopts multistage shielding, and the anti-false colour of shell spraying camouflage color can adapt to field extreme environment;
13. control the platform hommization: highlighted light-emitting diode is adopted in the panel state indication of equipment, has avoided the resolution difficulty of other display modes; The network management platform of system adopts the simulation figure operation interface, the indication of system and be provided with easy, directly perceived.
Claims (6)
1, a kind of short-wave receiver fiber optic transmission system, it is characterized in that comprising a plurality of far-end channel banks of being furnished with antenna arranged side by side, the far-end channel bank connects digital switching element by the optical cable that is equipped with separately respectively more jointly, and digital switching element connects many receivers corresponding with a plurality of far-end channel banks again.
2,, it is characterized in that the far-end channel bank comprises protective circuit, filter, LNA, agc circuit, wide and narrow strip signal processor, agc circuit, the optical-electrical converter that connects optical cable from antenna successively according to the described short-wave receiver fiber optic transmission system of claim 1; The wide and narrow strip signal processor also is connected optical cable by far-end passback control module with optical-electrical converter simultaneously.
3, according to the described short-wave receiver fiber optic transmission system of claim 2, it is characterized in that digital switching element comprises many groups of optical-electrical converter and the AD converter that link to each other successively that connect optical-electrical converter by optical cable, AD converter connects the DA transducer of a plurality of connection receivers again by the intelligent array Switching Module; Also comprise the local side passback control module that is connected far-end passback control module by optical cable with optical-electrical converter, local side passback control module connects intelligent array Switching Module and computer by the integrated management control module.
4,, it is characterized in that the integrated management control module connects computer by Ethernet or RS232 according to the described short-wave receiver fiber optic transmission system of claim 3.
5,, it is characterized in that the far-end channel bank is installed on the aerial truck that is equipped with antenna according to claim 1 or 2 or 3 or 4 described short-wave receiver fiber optic transmission systems.
6,, it is characterized in that the far-end channel bank is furnished with solar cell formula power supply or mains supply according to claim 1 or 2 or 3 or 4 described short-wave receiver fiber optic transmission systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201735049U CN201113984Y (en) | 2007-09-30 | 2007-09-30 | Short wave reception optical fiber transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201735049U CN201113984Y (en) | 2007-09-30 | 2007-09-30 | Short wave reception optical fiber transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113984Y true CN201113984Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201735049U Expired - Fee Related CN201113984Y (en) | 2007-09-30 | 2007-09-30 | Short wave reception optical fiber transmission system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991675A (en) * | 2015-01-29 | 2016-10-05 | 大唐联诚信息***技术有限公司 | Signal processing system and signal processing method |
| CN106549688A (en) * | 2016-11-25 | 2017-03-29 | 西安烽火电子科技有限责任公司 | Short-wave radio set and its Fiber isolation method directly sampled based on short-wave radio frequency |
| CN108150836A (en) * | 2016-12-02 | 2018-06-12 | 天津超音科技有限公司 | Monitoring leak from oil gas pipe early warning system based on optical fiber |
-
2007
- 2007-09-30 CN CNU2007201735049U patent/CN201113984Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991675A (en) * | 2015-01-29 | 2016-10-05 | 大唐联诚信息***技术有限公司 | Signal processing system and signal processing method |
| CN106549688A (en) * | 2016-11-25 | 2017-03-29 | 西安烽火电子科技有限责任公司 | Short-wave radio set and its Fiber isolation method directly sampled based on short-wave radio frequency |
| CN108150836A (en) * | 2016-12-02 | 2018-06-12 | 天津超音科技有限公司 | Monitoring leak from oil gas pipe early warning system based on optical fiber |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ZHONGDING HAILONG NEW ENERGY TECHNOLOGY C Free format text: FORMER OWNER: ZHU ENCAN Effective date: 20111008 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100073 FENGTAI, BEIJING TO: 200092 HONGKOU, SHANGHAI |
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| TR01 | Transfer of patent right |
Effective date of registration: 20111008 Address after: 200092 Shanghai Kongjiang Road No. 1690 14 floor of the Hotel Phoenix Patentee after: Zhu Encan Address before: 100073 Beijing city Fengtai District North Liuliqiao No. 4 Naval Equipment Research Institute of the Ministry of Patentee before: Zhu Encan |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20140930 |
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| EXPY | Termination of patent right or utility model |