CN207251620U - A kind of remote spread spectrum data transmission system based on tropospheric scatter - Google Patents
A kind of remote spread spectrum data transmission system based on tropospheric scatter Download PDFInfo
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- CN207251620U CN207251620U CN201721106982.8U CN201721106982U CN207251620U CN 207251620 U CN207251620 U CN 207251620U CN 201721106982 U CN201721106982 U CN 201721106982U CN 207251620 U CN207251620 U CN 207251620U
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- spread spectrum
- data transmission
- transmission system
- system based
- remote
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Abstract
The utility model discloses a kind of remote spread spectrum data transmission system based on tropospheric scatter, including terminal device, spread spectrum module and antenna, the terminal device is corresponded to by wired connection and/or wireless connection and connects the spread spectrum module, the spread spectrum module, which corresponds to, connects the antenna, and the spread spectrum module includes RF transceiver, modem and power amplifier.System data transmission distance is remote, and transmission range is 6 times of conventional wireless data transmission；It is simple in structure, small, flexibility is high, production cost and maintenance cost are low.
Description
Technical field
Wireless communication field is the utility model is related to, particularly a kind of remote spread spectrum data transmission system.
Background technology
The Radio Data-transmission power of widespread adoption is 0.1W -5W at present, and transmission range is no more than 10Km, be
Radio data is transmitted in farther distance to set relay station in way is transmitted.
Scattering process of the inhomogeneities that tropospheric scatter communication refers to utilize communication media in atmosphere to radio wave,
Ultrashort wave, the microwave beyond-the-horizon communication of progress.Tropospheric scatter communication is generally used for military affairs, not using spread spectrum equipment,
Transmission power on kilowatt, dual-mode antenna diameter reach several meters, and system structure is complicated, and transmission capacity is larger, and communication distance 10-
600km, it is with high costs.
Utility model content
The utility model provides a kind of remote spread spectrum data transmission system based on tropospheric scatter.
The technical solution adopted in the utility model is as follows：
A kind of remote spread spectrum data transmission system based on tropospheric scatter, one embodiment of the utility model include
Terminal device, spread spectrum module and antenna, the terminal device correspond to connection by wired connection and/or wireless connection
The spread spectrum module, the spread spectrum module, which corresponds to, connects the antenna, and the spread spectrum module includes RF transceiver, modulation /demodulation
Device and power amplifier.
Further, the wireless connection includes data format conversion module.
Further, the wired connection includes interface modular converter.
Other aspects and advantage of the utility model become obvious according to detailed description below in conjunction with the accompanying drawings, described
The principle of the utility model is illustrated by way of example in attached drawing.
Brief description of the drawings
Fig. 1 is the system architecture diagram provided for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
When the Radio Data-transmission of widespread adoption is transmitted with smaller power at present, data transmission distance is short, when need to be into
During row Long-range Data Transmission, relay station need to be added in circuit, add equipment and management cost.Tropospheric scatter communication can
To realize Long-range Data Transmission, but its transmission power is high, and dual-mode antenna diameter reaches several meters, and system structure is complicated, communication cost
It is high.
In view of the above-mentioned problems, the utility model provide it is a kind of it is of simple structure and low cost, be easy to carry about with one, flexibility is high,
The spread spectrum data transmission system of Long-range Data Transmission can be realized with smaller power.
Fig. 1 is the system architecture diagram provided for the utility model embodiment, as shown in Figure 1, a kind of dissipated based on troposphere
The remote spread spectrum data transmission system penetrated, specifically includes terminal device, spread spectrum module and antenna, the terminal device is by having
Line connecting path and/or wireless connection, which correspond to, connects the spread spectrum module, and the spread spectrum module, which corresponds to, connects the antenna,
The spread spectrum module includes RF transceiver, modem and power amplifier.
The wireless connection includes data format conversion module, including but not limited to by the UART (nothings of spread spectrum module
Line serial port module) data-signal is converted to Bluetooth signal, and terminal device passes through wireless connection and connects spread spectrum module, data lattice
Formula modular converter meets the radio path data transportation requirements between terminal device and spread spectrum module, realizes terminal device even
Can flexibly it be moved in a small range when connecing spread spectrum module；The wired connection includes interface modular converter, including but unlimited
In being USB interface (TTL by the TTL interface conversions of spread spectrum module：Transistor Transistor Logic, transistor-crystalline substance
Body pipe logic), interface modular converter can be in terminal device with realizing that it is normally connected in the case of spread spectrum module interface difference.
Spread spectrum module includes RF transceiver, modem and power amplifier, and terminal device sends out data to be transmitted
When giving spread spectrum module, spread spectrum module completes coding, modulation and the high frequency power amplification of data, then forwards the data to day
Line；When antenna transfers data to spread spectrum module, spread spectrum module completes the decoding of data, modulation, then by the data after demodulation
Terminal device is transmitted to along same paths are inverse.Spread spectrum module uses transparent transmission mode, and working frequency range is in 900-931MHZ, TTL electricity
Flat output, the IO voltages of compatible 3.3V and 5V, spread spectrum module are carried out data transmission using spread spectrum direct-sequence technology, have communication distance
Far, the advantage of strong antijamming capability, power density are disperseed, and other communication apparatus are not interfered with.
Spread spectrum module is provided with data ciphering and deciphering module and data compressing module.Spread spectrum module transmits data in the air
When, pass through tight encryption-decryption algorithm so that Data acquisition loses meaning.Data compressing module can effectively reduce data biography
The defeated time, reduces data and is disturbed probability, improve data transmission credibility.Optimally, spread spectrum module is additionally provided with forward error correction
Module, its code efficiency is higher, and error correcting capability is strong, in the case of bursty interference, can actively correct disturbed data packet, greatly
The big reliability for improving data transfer.
Spread spectrum module is corresponded to by high frequency cable connects the antenna, and high frequency cable loss is low, and transfer impedance is small.The day
Line is high-gain aerial.As embodiment, the antenna can use high-gain Yagi antenna, it is made of aluminium tube material, gain
For 12dB, input impedance is 50 ohm, and bandwidth is 900 to 935MHz, and it is 18 ° that standing wave, which is less than 1.5,3dB lobe widths, dimensioning
Very little is 750mm*200mm.
Optimally, the terminal device includes computer and mobile terminal device.When mobile terminal device is terminal device,
The mobile use of the system can be achieved, flexibility is high.When mobile phone is as terminal device, when cell phone network interrupts, mobile phone connection institute
The spread spectrum module of system is stated, the mobile phone of network interruption can be used as emergency communication equipment, simultaneously can be used for daily fixed point group
Network data transmits.
The utility model advantage is numerous.Different aspect, embodiment or embodiments can produce one in advantages below
A or multiple advantages.One advantage of the utility model is：Long distance for data, transmission range are conventional wireless data transmission
6 times.Another advantage of the utility model is relatively conventional tropospheric scatter communica-tion equipment, simple in structure, small, flexible
Property high, production cost and maintenance cost it is low.Another advantage of the utility model is when mobile phone is as terminal device, cell phone network
During interruption, mobile phone connects the spread spectrum module of the system, the mobile phone of network interruption can be used as emergency communication equipment.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of remote spread spectrum data transmission system based on tropospheric scatter, it is characterised in that including terminal device, spread spectrum
Module and antenna, the terminal device are corresponded to by wired connection and/or wireless connection and connect the spread spectrum module,
The spread spectrum module, which corresponds to, connects the antenna, and the spread spectrum module includes RF transceiver, modem and power amplification
Device.
2. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the wireless connection includes data format conversion module.
3. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the wired connection includes interface modular converter.
4. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the spread spectrum module further includes data ciphering and deciphering module.
5. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the spread spectrum module further includes data compressing module.
6. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the spread spectrum module further includes forward error correction block.
7. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the spread spectrum module is corresponded to by high frequency cable and connects the antenna.
8. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 3, its feature exist
In the interface modular converter can be that TTL turns USB interface.
9. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the terminal device includes computer and mobile terminal device.
10. a kind of remote spread spectrum data transmission system based on tropospheric scatter according to claim 1, its feature exist
In the antenna is high-gain aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721106982.8U CN207251620U (en) | 2017-08-31 | 2017-08-31 | A kind of remote spread spectrum data transmission system based on tropospheric scatter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721106982.8U CN207251620U (en) | 2017-08-31 | 2017-08-31 | A kind of remote spread spectrum data transmission system based on tropospheric scatter |
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| Publication Number | Publication Date |
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| CN207251620U true CN207251620U (en) | 2018-04-17 |
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| CN201721106982.8U Expired - Fee Related CN207251620U (en) | 2017-08-31 | 2017-08-31 | A kind of remote spread spectrum data transmission system based on tropospheric scatter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195118A (en) * | 2018-10-19 | 2019-01-11 | 江苏未来智慧信息科技有限公司 | Band PA One-to-All Broadcast communication device and communication means based on bluetooth |
| CN109274400A (en) * | 2018-10-25 | 2019-01-25 | 东莞市慧眼数字技术有限公司 | The information transferring method and system of conveying length in a kind of raising cable |
-
2017
- 2017-08-31 CN CN201721106982.8U patent/CN207251620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195118A (en) * | 2018-10-19 | 2019-01-11 | 江苏未来智慧信息科技有限公司 | Band PA One-to-All Broadcast communication device and communication means based on bluetooth |
| CN109274400A (en) * | 2018-10-25 | 2019-01-25 | 东莞市慧眼数字技术有限公司 | The information transferring method and system of conveying length in a kind of raising cable |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20210831 |