CN206620134U - The a wide range of optical fiber cladding system in satellite positioning signal blind area - Google Patents
The a wide range of optical fiber cladding system in satellite positioning signal blind area Download PDFInfo
- Publication number
- CN206620134U CN206620134U CN201621400477.XU CN201621400477U CN206620134U CN 206620134 U CN206620134 U CN 206620134U CN 201621400477 U CN201621400477 U CN 201621400477U CN 206620134 U CN206620134 U CN 206620134U
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- China
- Prior art keywords
- satellite positioning
- positioning signal
- optical fiber
- main frames
- wide range
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- Position Fixing By Use Of Radio Waves (AREA)
- Radio Relay Systems (AREA)
Abstract
The utility model provides a kind of a wide range of optical fiber cladding system in satellite positioning signal blind area, the a wide range of optical fiber cladding system in satellite positioning signal blind area includes the MU main frames and remote maintenance webmaster for being installed on ground platform, MU main frames are connected by feeder line with the GPS/BD reception antennas outside ceiling, MU main frames are connected with some RU remote terminations by optical cable, and each RU remote terminations carry some retransmitting antennas.The features such as the utility model preferably solves railway large-scale architecture indoor satellite positioning signal covering needs, long transmission distance good with covering signal quality, strong antijamming capability, extensive use is obtained in important events such as military affairs, track traffics.
Description
Technical field
The utility model is related to satellite positioning signal soverlay technique field, specifically a kind of big model in satellite positioning signal blind area
Enclose optical fiber cladding system.
Background technology
GPS GNSS is widely used in all trades and professions such as military affairs, traffic, geological prospecting, and current GNSS is
The BD big-dipper satellites of the GPS geo-location system, the GLONASS systems of Russia and the China that mainly have the U.S. through maturation application
Alignment system.GPS/BD satellite positioning modules are used in railway locomotive integration locomotive station, for train scheduling control and communication
Standard switches, and is important means and the guarantee of safe train operation.
The covering of high ferro yard satellite fix mainly solves the problems, such as the region overlays such as high ferro station platform, motor-car storehouse, due to room
Top building is blocked, and causes GPS/BD satellite positioning signals to lose, and train positioning system can not continuously work, and positioning function can not
It is monitored and safeguards, the satellite positioning signals such as GPS/BD is introduced by station or motor-car storehouse by trunking, are railroad trains
The important content of safe and reliable operation.Conventional gps signal transponder, adapts to small-sized place application, and system reliability and performance are difficult
To meet railway requirement.
Utility model content
There is provided a kind of a wide range of optical fiber in satellite positioning signal blind area in order to solve problem of the prior art for the utility model
Cladding system, preferably solving the covering of railway large-scale architecture indoor satellite positioning signal needs, good with covering signal quality, transmission
Distance is remote, the features such as strong antijamming capability, in the important events such as military affairs, track traffic acquisition extensive use.
The a wide range of optical fiber cladding system in satellite positioning signal blind area that the utility model is provided, including it is installed on ground platform
MU main frames and remote maintenance webmaster, MU main frames are connected by feeder line with the GPS/BD reception antennas outside ceiling, and MU main frames pass through
Optical cable is connected with some RU remote terminations, and each RU remote terminations carry some retransmitting antennas.
Further improve, described GPS/BD reception antennas have redundancy backup, and principal and subordinate's antenna is connected by feeder line respectively
To MU main frames.
Further improve, when distance is less than 100m between described GPS/BD reception antennas connection and retransmitting antenna, retransmit
Antenna installs separation net additional.
The a wide range of optical fiber covering method in satellite positioning signal blind area, comprises the following steps：Satellite positioning signal is through GPS/BD
After reception antenna amplification, it is input to MU main frames and is filtered amplification, be then converted into optical signal, by optical cable transmission to RU distal ends
Optical signal is reduced to satellite positioning signal by machine, RU, and being output to each retransmitting antenna by radio frequency feed line is launched, long-range dimension
Protecting net pipe carries out remote monitoring and administration to MU Receiving Hosts, RU remote terminations, reception antenna.
The utility model beneficial effect is：
1) 1 MU main frame can link no less than 4 RU remote terminations, 1 RU can 4 retransmitting antennas of band, be adapted to large-scale
Venue and the covering of rail yard satellite-signal；
2) Optical fiber relay distance is farthest up to more than 5km；
3) GPS, big-dipper satellite positioning signal can be received simultaneously, realize that bimodulus is covered simultaneously；
4) optical cable is leaned in signal transmission, adapts to electric railway strong electromagnetic；
5) double GPS/BD reception antennas redundant configurations, when an antenna failure, can automatically switch, while reporting webmaster simultaneously
Prompting；
6) according to Source of Railway Communication and Signalling equipment standard, possesses hot backup redundancy function, it is ensured that security of system and reliability；
Possess remote monitoring webmaster ability, be easy to equipment maintenance and management.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a kind of embodiment schematic diagram of the utility model.
Embodiment
The utility model structure is as shown in figure 1, MU main frames and remote maintenance webmaster including being installed on ground platform, MU master
Machine is connected by feeder line with the GPS/BD reception antennas outside ceiling, and MU main frames are connected with some RU remote terminations by optical cable, each
RU remote terminations carry some retransmitting antennas.Described GPS/BD reception antennas have redundancy backup, and principal and subordinate's antenna passes through feedback respectively
Line is connected to MU main frames.
The a wide range of optical fiber covering method in satellite positioning signal blind area, comprises the following steps：Satellite positioning signal is through GPS/BD
After reception antenna amplification, it is input to MU main frames and is filtered amplification, be then converted into optical signal, by optical cable transmission to RU distal ends
Optical signal is reduced to satellite positioning signal by machine, RU, and being output to each retransmitting antenna by radio frequency feed line is launched, long-range dimension
Protecting net pipe carries out remote monitoring and administration to MU Receiving Hosts, RU remote terminations, reception antenna.
A kind of embodiment of the utility model is as shown in Fig. 2 motor-car storehouse blocking due to train, therefore antenna can only
Between two trains, overlay length is according to 130 degree of calculating of launch angle of retransmitting antenna, and overlay length is 16.3 meters.High ferro is moved
Car GPS/BD receiver only needs to covering headstock position in locomotive head, according to 8 row EMUs average lengths 210
Rice is calculated, and retransmitting antenna should be arranged on 0 meter, 210 meters and 420 meters of region, and MU receivers are placed on Communication machine room, RU according to
Motor-car head stand, places wall built-up and installs, while supporting electric power 220VAC and ups power nearby.
The covering system of MU Receiving Hosts and RU remote terminations composition is altogether using 3 RU far-end units, and MU passes through optical cable and RU
The star-like connection of remote termination, each RU is with 2（It is primary and backup）.RU remote terminations signal output connects 4 by 1/2 radio-frequency cable
Retransmitting antenna, signal distribution uses the coupler of the different degrees of coupling of tri- kinds of 10/6/3dB so that the income letter of different distance antenna
It is number essentially identical, it is ensured that satellite positioning signal covering is uniform.
Retransmitting antenna should be noted that to be kept isolating with reception antenna, and when two antenna distances are less than 100m, retransmitting antenna will add
Separation net, increases the isolation of antenna sending and receiving.
In railway large-scale the yard such as region of station, motor-car storehouse homalographic more than 20,000 square metres, conventional satellite positioning signal
Repeater can not meet user's needs, set forth herein optical fiber distributed type satellite positioning signal covering system, be pacified using master-slave redundancy
Full theory, meets railway user security reliable request, and practical application effect is good, and the system also can be in such as military affairs, electric power, aviation
Applied in large area satellite positioning signal covering scene etc. industry.
System link is calculated as follows：
The signal intensity that GPS/BD satellite-signals reach earth surface is generally -130 ~ -160dBm, according to weather, hides
The weather geographical environments such as gear change, satellite positioning signal covering system is relayed by signal, should ensure that indoor GPS/BD is received
Machine can received signal strength preferably within the scope of.
GPS/BD signals cover budget：
Antenna receiving power dBm：-130；
Noise coefficient NF：- 2, reception antenna；
Pregain dB：27；
Receive feeder loss dB：- 6,1/2 feeder line, 50m@1.7G；
MU main frame gains dB：30；
Optical path loss dB：- 8, according to 1000m, 1 point of 2 optical branching device loss；
RU remote termination gains dB：40；
Gain-adjusted scope dB：0-30；
Retransmitting antenna distribution loss dB：- 40 calculate according to 300 meter of 1/2 feeder line and 3 couplers；
Retransmitting antenna input power dBm：-90；
Space loss dB：30 ~ 60 meters from retransmitting antenna of 30 ~ 50 receivers；
Cover field strength dBm：- 120 ~ -140, the difference of retransmitting antenna power and space loss.
By being analyzed above as can be seen that MU gains are 30dB, RU gains are 40dB, and covering can be met by optical fiber
1km scope, retransmitting antenna distance farthest RU is 300 meters, 60 meters of the radiation length of retransmitting antenna.
After GPS/BD satellite positioning signals receive amplification through active antenna, it is input to MU main frames and is filtered amplification, then
Optical signal output is converted to, by optical cable transmission to RU remote terminations, optical signal is reduced to satellite positioning signal, passes through radio-frequency feed by RU
Line is output to each retransmitting antenna and launched.Remote maintenance webmaster carries out remote to MU Receiving Hosts, RU remote terminations, reception antenna
Range monitoring is managed.
Reception antenna is integrated with pre-low-noise amplifier (LNA), so reduces system noise, improves receiving sensitivity.
Covering system for the basic demand of position receiver antenna have 1. antenna gain be more than 27dB（Containing amplifier）；2. the direction of antenna
Figure scope is whole episphere, and 3dB width should be greater than 130 °；3. the interference for reduction multipath signal to receiver, it is desirable to antenna
Cross polarization ratio is more than 25dB；4. the interference for reduction retransmitting antenna to reception antenna, it is to avoid after signal self-excitation, reception antenna
- 25dB is should be less than to secondary lobe；5. radio-frequency cable feeding classification is used.
The utility model concrete application approach is a lot, and described above is only preferred embodiment of the present utility model, should
Point out, for those skilled in the art, on the premise of the utility model principle is not departed from, can also make
Go out some improvement, these improvement also should be regarded as protection domain of the present utility model.
Claims (3)
1. a kind of a wide range of optical fiber cladding system in satellite positioning signal blind area, it is characterised in that：Including being installed on ground platform
MU main frames and remote maintenance webmaster, MU main frames are connected by feeder line with the GPS/BD reception antennas outside ceiling, and MU main frames pass through light
Cable is connected with some RU remote terminations, and each RU remote terminations carry some retransmitting antennas.
2. a wide range of optical fiber cladding system in satellite positioning signal blind area according to claim 1, it is characterised in that：Described
GPS/BD reception antennas have redundancy backup, and principal and subordinate's antenna is connected to MU main frames by feeder line respectively.
3. a wide range of optical fiber cladding system in satellite positioning signal blind area according to claim 1, it is characterised in that：Described
When GPS/BD reception antennas are connected distance between retransmitting antenna less than 100m, retransmitting antenna installs separation net additional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400477.XU CN206620134U (en) | 2016-12-20 | 2016-12-20 | The a wide range of optical fiber cladding system in satellite positioning signal blind area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400477.XU CN206620134U (en) | 2016-12-20 | 2016-12-20 | The a wide range of optical fiber cladding system in satellite positioning signal blind area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206620134U true CN206620134U (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621400477.XU Expired - Fee Related CN206620134U (en) | 2016-12-20 | 2016-12-20 | The a wide range of optical fiber cladding system in satellite positioning signal blind area |
Country Status (1)
| Country | Link |
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| CN (1) | CN206620134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094051A (en) * | 2016-12-20 | 2017-08-25 | 南京泰通科技股份有限公司 | The a wide range of optical fiber cladding system in satellite positioning signal blind area and method |
-
2016
- 2016-12-20 CN CN201621400477.XU patent/CN206620134U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094051A (en) * | 2016-12-20 | 2017-08-25 | 南京泰通科技股份有限公司 | The a wide range of optical fiber cladding system in satellite positioning signal blind area and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 Termination date: 20211220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |