CN106953679A - A kind of vehicle-mounted Big Dipper short message satellite-signal communicator - Google Patents
A kind of vehicle-mounted Big Dipper short message satellite-signal communicator Download PDFInfo
- Publication number
- CN106953679A CN106953679A CN201610007241.8A CN201610007241A CN106953679A CN 106953679 A CN106953679 A CN 106953679A CN 201610007241 A CN201610007241 A CN 201610007241A CN 106953679 A CN106953679 A CN 106953679A
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- China
- Prior art keywords
- frequencies
- short message
- message
- power
- communicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
Abstract
The invention provides a kind of vehicle-mounted Big Dipper short message satellite-signal communicator, the device includes：Handheld device and the signal repeater being arranged on outside car；Signal repeater also includes S frequencies Transmit-Receive Unit and L frequency Transmit-Receive Units；Wherein, S frequencies Transmit-Receive Unit, for receiving the S frequency short message message of big-dipper satellite transmission, and is forwarded to handheld device；L frequency Transmit-Receive Units, for receiving the L frequency short message message of handheld device transmission, and are forwarded to big-dipper satellite；Handheld device, receives and dispatches short message message, and show short message message for control signal transponder.The vehicle-mounted Big Dipper short message satellite-signal communicator that the present invention is provided is by using handheld device control signal transponder, realize and short message message is unrestrictedly received and dispatched outside in-car car, and handheld device is light compact, is not only user-friendly to, the maintenance and management in later stage is also easy to.
Description
Technical field
The present invention relates to vehicle positioning signal control technology field, and in particular to a kind of vehicle-mounted Big Dipper
Short message satellite-signal communicator.
Background technology
No. two satellite navigation systems (BD2, Beidou-2) of the Big Dipper are the whole world of Chinese stand-alone development
Satellite navigation system.End the end of the year 2012 current 14 satellite services in the Asian-Pacific area,
Including 5 GEO satellites, 5 IGSO satellites and 4 MEO satellites.The wherein Big Dipper two
5 GEO satellites provide short message communication function, other satellites provide navigation locating function.
Because 5 GEO of the Big Dipper No. two are geosynchronous satellites, belong to fixed statellite, be distributed in
On equator.Wherein 1 satellite distribution is in Due South, and 2 are distributed in the east, and 2 are distributed in west
Side, especially car-mounted terminal uses the requirement for proposing directionality when this is just used terminal.
Existing car-mounted terminal is to install No. two car antennas of the Big Dipper in roof using solution,
In-car is installed display control unit collocation and used.
But existing car-mounted terminal only supports what the display control unit installed by in-car was carried out
Short message communicates, and can not be used outside car, and be not easy to the maintenance and management in later stage.
The content of the invention
The technical problem to be solved in the present invention is：Solving existing car-mounted terminal can not be carried out outside car
Short message communicates, and the problem of be not easy to the maintenance and management in later stage.
To realize above-mentioned goal of the invention, the invention provides a kind of vehicle-mounted Big Dipper short message satellite
Signal communication means, including：Handheld device and the signal repeater being arranged on outside car；It is described
Signal repeater also includes S frequencies Transmit-Receive Unit and L frequency Transmit-Receive Units；
Wherein,
The S frequencies Transmit-Receive Unit, the S frequency short messages for receiving big-dipper satellite transmission disappear
Breath, and it is forwarded to the handheld device；
The L frequencies Transmit-Receive Unit, for receiving the short report of L frequencies that the handheld device is sent
Literary message, and it is forwarded to the big-dipper satellite；
The handheld device, for controlling the signal repeater transmitting-receiving short message message, and shows
Show the short message message.
Wherein more preferably, the S frequencies Transmit-Receive Unit includes：S frequencies reception antenna, S frequencies
Low-noise amplifier and S frequency transmitting antennas,
Wherein,
The S frequencies reception antenna, for receiving the S frequencies that the big-dipper satellite is sent
Short message message；
The S frequencies low-noise amplifier, for the S frequencies short message message to be amplified；
The S frequencies transmitting antenna, for the S frequencies short message message after amplification to be turned
It is sent to the handheld device.
Wherein more preferably, the S frequencies low-noise amplifier includes three-stage amplifier and three
Level filter circuit.
Wherein more preferably, the L frequencies Transmit-Receive Unit includes：L frequencies reception antenna, L frequencies
Power amplifier and L frequency transmitting antennas；
Wherein,
The L frequencies reception antenna, for receiving the L frequencies that the handheld device is sent
Short message message；
The L frequencies power amplifier, the power for amplifying the L frequencies short message message；
The L frequencies transmitting antenna, for the L frequencies short message message after amplification to be turned
It is sent to the big-dipper satellite.
Wherein more preferably, the L frequencies power amplifier puts the L frequencies short message message
Big energy range is 3 watts to 30 watts.
Wherein more preferably, the L frequencies power amplifier is by the L frequencies short message message
Energy is amplified to 10 watts.
Wherein more preferably, the L frequencies power amplifier includes filter circuit and power amplification
Circuit.
Wherein more preferably, the communicator also includes the power supply unit being arranged on outside car；It is described
Power supply unit includes simulation low noise power supply module and power amplification power module；
Wherein,
The simulation low noise power supply module, for being provided for the S frequencies low-noise amplifier
Electric energy；
The power amplification power module, for providing electric energy for the L frequencies power amplifier.
Wherein more preferably, the simulation low noise power supply module is the S frequencies low noise amplification
Device provides 3.3V voltages, and the power amplification power module carries for the L frequencies power amplifier
For 10V voltages.
Wherein more preferably, the simulation low noise power supply module is two-stage circuit structure, is respectively
The DC-DC circuit and LDO circuit of series connection.
The invention provides a kind of vehicle-mounted Big Dipper short message satellite-signal communicator, device profit
With handheld device control signal transponder, realizing unrestrictedly received and dispatched outside in-car car short message and disappear
Breath, and handheld device is light compact, is not only user-friendly to, be also easy to the maintenance in later stage with
Management.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantage and benefit
It will be clear understanding for those of ordinary skill in the art.Accompanying drawing is only used for showing to be preferable to carry out
The purpose of mode, and it is not considered as limitation of the present invention.And in whole accompanying drawing, use
Identical reference symbol represents identical part.In the accompanying drawings：
Fig. 1 is the vehicle-mounted Big Dipper short message satellite-signal communication apparatus structure signal that the present invention is provided
Figure；
Fig. 2 is the S frequency Transmit-Receive Unit structural representations that the present invention is provided；
Fig. 3 is the S frequency low-noise amplifier structural representations that the present invention is provided；
Fig. 4 is the L frequency Transmit-Receive Unit structural representations that the present invention is provided；
Fig. 5 is the L frequency power amplifier structure schematic diagrames that the present invention is provided；
Fig. 6 is the power supply unit structural representation that the present invention is provided；
Fig. 7 is the vehicle-mounted Big Dipper short message satellite-signal communicator workflow that the present invention is provided
Schematic diagram.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is made further in detail
Description.Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
The invention provides a kind of vehicle-mounted Big Dipper short message satellite-signal communicator, the device bag
Include：Handheld device and the signal repeater being arranged on outside car；Signal repeater also includes S frequencies
Transmit-Receive Unit and L frequency Transmit-Receive Units；Wherein, S frequencies Transmit-Receive Unit, for receiving the Big Dipper
The S frequency short message message that satellite is sent, and it is forwarded to handheld device；L frequency Transmit-Receive Units,
For receiving the L frequency short message message of handheld device transmission, and it is forwarded to big-dipper satellite；It is hand-held
Equipment, receives and dispatches short message message, and show short message message for control signal transponder.
The vehicle-mounted Big Dipper short message satellite-signal communicator that the present invention is provided, utilizes handheld device
Control signal transponder, realizes and short message message is unrestrictedly received and dispatched outside in-car car, and hand-held
Equipment is light compact, is not only user-friendly to, and is also easy to the maintenance and management in later stage.
Referring to Fig. 1, Fig. 1 shows the vehicle-mounted Big Dipper short message satellite-signal communication that the present invention is provided
Device, the device includes：Handheld device 1 and the signal repeater 2 being arranged on outside car；Signal
Transponder also includes S frequencies Transmit-Receive Unit 21 and L frequencies Transmit-Receive Unit 22.Wherein, S frequencies are received
Bill member 21 is used for the S frequency short message message for receiving big-dipper satellite transmission, and is forwarded to hand-held set
Standby 1；L frequencies Transmit-Receive Unit 22 is used for the L frequency short message message for receiving the transmission of handheld device 1,
And it is forwarded to big-dipper satellite；Handheld device 1 is used for control signal transponder and receives and dispatches short message message,
And show short message message.
As shown in Fig. 2 the S frequencies Transmit-Receive Unit 21 in device includes：S frequencies reception antenna 211,
S frequencies low-noise amplifier 212 and S frequencies transmitting antenna 213.Wherein, S frequencies reception antenna
211 are arranged on outside car, are preferably provided in roof, the S frequencies for receiving big-dipper satellite transmission
Short message message.S frequencies low-noise amplifier 212, for S frequency short messages message to be amplified,
It preferably includes three-stage amplifier and three-level filtering circuit as shown in Figure 3, and the first order increases
Benefit about 16dB, the second stage gain about 18dB, third level gain about 18dB, throw and remove filter loss,
The overall gain of three-stage amplifier about 35dB or so.S frequencies transmitting antenna 213 is set in the car,
For the S frequency short message message after amplification to be forwarded into handheld device 1.
As shown in figure 4, the L frequencies Transmit-Receive Unit 22 in device includes：L frequencies reception antenna 221,
L frequencies power amplifier 222 and L frequencies transmitting antenna 223.Wherein, L frequencies reception antenna 221
It is arranged on outside car, is preferably provided in roof, the L frequencies for receiving the transmission of handheld device 1 is short
Message.L frequencies power amplifier 222 is used for the power for amplifying L frequency short message message.L
Frequency transmitting antenna 223 is set in the car, for by the L frequency short message message after power amplification
It is forwarded to big-dipper satellite.
Wherein, as shown in figure 5, L frequencies power amplifier 222 is mainly put by filter circuit and power
Big circuit composition.Required according to big-dipper satellite, the inbound power of L frequency signals needs to reach 3 watts
To 30 watts or so of energy value, therefore, L frequencies power amplifier puts L frequency short message message
Big energy range is 3 watts to 30 watts.Wherein more preferably, L frequencies power amplifier is short by L frequencies
The energy of message is amplified to 10 watts, and the energy value of amplification is set as into 10 watts reduce to L
The requirement of frequency power amplifier 222 also meets the condition of Big Dipper satellite signal inbound power simultaneously.
In order to which the signal repeater 2 outside to car provides electric energy, the device that the present invention is provided also includes setting
Put the power supply unit 3 outside car.As shown in fig. 6, power supply unit 3 mainly includes simulation low noise acoustic-electric
Source module 31 and power amplification power module 32.Wherein, simulation low noise power supply module 31 is used
In for S frequencies low-noise amplifier 212 provide electric energy.Power amplification power module 32 is used for for L frequently
Point power amplifier 222 provides electric energy.
Specifically, power amplification power module 32 uses DC-DC circuit, is put for L frequency power
Big device 222 carries out burst type high current and powered, and is that L frequencies power amplifier 222 provides 10V voltages.
Wherein more preferably, in order to lift the conversion efficiency of power supply while ensure that the low-noise characteristic of voltage,
Simulate low noise power supply module 31 and use two-stage circuit structure, be depressured first with DC-DC circuit
Into 5V voltages, 3.3V is then depressured into by LDO, is that S frequencies low-noise amplifier 212 is provided
3.3V voltages.
Its workflow of vehicle-mounted Big Dipper short message satellite-signal communicator that the present invention is provided is as schemed
Shown in 7, including：The control signal transponder 2 of handheld device 1 starts to receive signal；It is arranged on outside car
S frequency Transmit-Receive Units start after control instruction is received receive big-dipper satellite send S frequencies
Short message message, and handheld device 1 will be sent to after S frequency short messages message amplification；It is hand-held
Equipment 1 can show the S frequency short message message received and reply the message, wherein reply
Message is sent in L frequency short message modes；The L frequency Transmit-Receive Units being arranged on outside car receive hand-held
Power amplification is carried out after the L frequency short message message that equipment 1 is sent, the Big Dipper is finally forwarded to and defends
Star, completes whole short message message communicating process.
It is understood that in whole communication process, handheld device 1 need not limit place to use,
Both in-car messaging can be located at can also be located at the outer messaging of car, significant increase user
Property easy to use, also improves the service efficiency of device.In addition, handheld device 1 is light compact,
Later maintenance is relatively easy to when changing, it is to avoid in the prior art due to in-car display and control unit
Damage causes whole device not use, and improves the service life of whole device.
In summary, the vehicle-mounted Big Dipper short message satellite-signal communicator that the present invention is provided, leads to
Cross using handheld device control signal transponder, realize and short report is unrestrictedly received and dispatched outside in-car car
Literary message, and handheld device is light compact, is not only user-friendly to the maintenance for being also easy to the later stage
With management.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant
The those of ordinary skill of technical field, without departing from the spirit and scope of the present invention,
It can also make a variety of changes and modification, therefore all equivalent technical schemes fall within the present invention
Category, scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of vehicle-mounted Big Dipper short message satellite-signal communicator, it is characterised in that including：
Handheld device and the signal repeater being arranged on outside car；The signal repeater also includes S frequently
Point Transmit-Receive Unit and L frequency Transmit-Receive Units；
Wherein,
The S frequencies Transmit-Receive Unit, the S frequency short messages for receiving big-dipper satellite transmission disappear
Breath, and it is forwarded to the handheld device；
The L frequencies Transmit-Receive Unit, for receiving the short report of L frequencies that the handheld device is sent
Literary message, and it is forwarded to the big-dipper satellite；
The handheld device, for controlling the signal repeater transmitting-receiving short message message, and shows
Show the short message message.
2. communicator as claimed in claim 1, it is characterised in that the S frequencies transmitting-receiving
Unit includes：S frequencies reception antenna, S frequencies low-noise amplifier and S frequency transmitting antennas,
Wherein,
The S frequencies reception antenna, for receiving the S frequencies that the big-dipper satellite is sent
Short message message；
The S frequencies low-noise amplifier, for the S frequencies short message message to be amplified；
The S frequencies transmitting antenna, for the S frequencies short message message after amplification to be turned
It is sent to the handheld device.
3. communicator as claimed in claim 2, it is characterised in that the S frequencies low noise
Acoustic amplifier includes three-stage amplifier and three-level filtering circuit.
4. communicator as claimed in claim 1, it is characterised in that the L frequencies transmitting-receiving
Unit includes：L frequencies reception antenna, L frequencies power amplifier and L frequency transmitting antennas；
Wherein,
The L frequencies reception antenna, for receiving the L frequencies that the handheld device is sent
Short message message；
The L frequencies power amplifier, the power for amplifying the L frequencies short message message；
The L frequencies transmitting antenna, for the L frequencies short message message after amplification to be turned
It is sent to the big-dipper satellite.
5. communicator as claimed in claim 4, it is characterised in that the L frequencies power
The energy range that the L frequencies short message message is amplified is 3 watts to 30 watts by amplifier.
6. communicator as claimed in claim 4, it is characterised in that the L frequencies power
The energy of the L frequencies short message message is amplified to 10 watts by amplifier.
7. communicator as claimed in claim 4, it is characterised in that the L frequencies power
Amplifier includes filter circuit and power amplification circuit.
8. communicator as claimed in claim 1, it is characterised in that the communicator is also
Including the power supply unit being arranged on outside car；Said supply unit includes simulation low noise power supply module
And power amplification power module；
Wherein,
The simulation low noise power supply module, for being provided for the S frequencies low-noise amplifier
Electric energy；
The power amplification power module, for providing electric energy for the L frequencies power amplifier.
9. communicator as claimed in claim 8, it is characterised in that the simulation low noise
Power module provides 3.3V voltages, the power amplification electricity for the S frequencies low-noise amplifier
Source module provides 10V voltages for the L frequencies power amplifier.
10. communicator as claimed in claim 8, it is characterised in that the simulation low noise
Acoustic-electric source module is two-stage circuit structure, the DC-DC circuit respectively connected and LDO electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007241.8A CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007241.8A CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106953679A true CN106953679A (en) | 2017-07-14 |
Family
ID=59465647
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610007241.8A Pending CN106953679A (en) | 2016-01-06 | 2016-01-06 | A kind of vehicle-mounted Big Dipper short message satellite-signal communicator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039432A (en) * | 2018-09-04 | 2018-12-18 | 北京世纪东方通讯设备有限公司 | A kind of communication means and short message transmission device based on Beidou signal overlay device |
| CN111356095A (en) * | 2020-02-04 | 2020-06-30 | 北京天海达科技有限公司 | Beidou short message sharing terminal and Beidou short message receiving and sending method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100194630A1 (en) * | 2006-03-30 | 2010-08-05 | Itt Manufacturing Enterprises, Inc. | Optimized Beamforming for Satellite Communication |
| CN101937086A (en) * | 2010-08-04 | 2011-01-05 | 广州广嘉北斗电子科技有限公司佛山市南海分公司 | Communication module for satellite navigation system |
| CN102064874A (en) * | 2010-12-16 | 2011-05-18 | 成都天奥电子股份有限公司 | Big Dipper second-generation satellite signal transponder and implementation method thereof |
| CN102087363A (en) * | 2010-11-17 | 2011-06-08 | 航天恒星科技有限公司 | Positioning method for intermediate orbit satellite search and rescue system |
| CN102508261A (en) * | 2011-10-19 | 2012-06-20 | 成都金本华科技有限公司 | Beidou-2/GPS (global positioning system) dual-navigation satellite signal forwarding device and implementation method thereof |
| CN204287488U (en) * | 2014-06-19 | 2015-04-22 | 北京九天利建信息技术有限公司 | A kind of Big Dipper bluetooth companion user terminal |
| CN204536557U (en) * | 2014-11-14 | 2015-08-05 | 北京九天利建信息技术有限公司 | A kind of Big Dipper short message omnidirectional transmitting-receiving subscriber computer terminal |
| CN105610522A (en) * | 2015-12-11 | 2016-05-25 | 湖南中森通信科技有限公司 | Detection system and method for universal Beidou radio frequency module |
| US10211914B2 (en) * | 2011-11-15 | 2019-02-19 | Aviation Communication & Surveillance Systems, Llc | Systems and methods for providing remote L-band smart antennas |
-
2016
- 2016-01-06 CN CN201610007241.8A patent/CN106953679A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100194630A1 (en) * | 2006-03-30 | 2010-08-05 | Itt Manufacturing Enterprises, Inc. | Optimized Beamforming for Satellite Communication |
| CN101937086A (en) * | 2010-08-04 | 2011-01-05 | 广州广嘉北斗电子科技有限公司佛山市南海分公司 | Communication module for satellite navigation system |
| CN102087363A (en) * | 2010-11-17 | 2011-06-08 | 航天恒星科技有限公司 | Positioning method for intermediate orbit satellite search and rescue system |
| CN102064874A (en) * | 2010-12-16 | 2011-05-18 | 成都天奥电子股份有限公司 | Big Dipper second-generation satellite signal transponder and implementation method thereof |
| CN102508261A (en) * | 2011-10-19 | 2012-06-20 | 成都金本华科技有限公司 | Beidou-2/GPS (global positioning system) dual-navigation satellite signal forwarding device and implementation method thereof |
| US10211914B2 (en) * | 2011-11-15 | 2019-02-19 | Aviation Communication & Surveillance Systems, Llc | Systems and methods for providing remote L-band smart antennas |
| CN204287488U (en) * | 2014-06-19 | 2015-04-22 | 北京九天利建信息技术有限公司 | A kind of Big Dipper bluetooth companion user terminal |
| CN204536557U (en) * | 2014-11-14 | 2015-08-05 | 北京九天利建信息技术有限公司 | A kind of Big Dipper short message omnidirectional transmitting-receiving subscriber computer terminal |
| CN105610522A (en) * | 2015-12-11 | 2016-05-25 | 湖南中森通信科技有限公司 | Detection system and method for universal Beidou radio frequency module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039432A (en) * | 2018-09-04 | 2018-12-18 | 北京世纪东方通讯设备有限公司 | A kind of communication means and short message transmission device based on Beidou signal overlay device |
| CN109039432B (en) * | 2018-09-04 | 2021-05-04 | 北京世纪东方通讯设备有限公司 | Communication method based on Beidou signal coverage equipment and short message transmission equipment |
| CN111356095A (en) * | 2020-02-04 | 2020-06-30 | 北京天海达科技有限公司 | Beidou short message sharing terminal and Beidou short message receiving and sending method |
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Application publication date: 20170714 |
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