CN106791725A - A kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver - Google Patents
A kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver Download PDFInfo
- Publication number
- CN106791725A CN106791725A CN201611170224.2A CN201611170224A CN106791725A CN 106791725 A CN106791725 A CN 106791725A CN 201611170224 A CN201611170224 A CN 201611170224A CN 106791725 A CN106791725 A CN 106791725A
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- China
- Prior art keywords
- satellite
- circuit module
- direct broadcasting
- radio frequency
- receiver
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- 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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
- G01S19/215—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service issues related to spoofing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Astronomy & Astrophysics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver, including the LNB modules cheated with anti-one-segment radio frequency, radiofrequency signal split circuit module, direct broadcasting satellite digital TV receiver module and satellite navigation position receiver module, wherein, the LNB modules with the deception of anti-one-segment radio frequency include direct broadcasting satellite DTV LNB modules, satellite positioning antennas circuit module and radiofrequency signal fusion circuit module, wherein, the radiofrequency signal fusion circuit module is configured as uniting two into one the two-way radiofrequency signal of the direct broadcasting satellite DTV LNB modules and satellite positioning antennas circuit module；The satellite navigation position receiver module is configured to consistency check algorithm, and alarm signal is sent to the deception of one-segment radio frequency, notifies that the direct broadcasting satellite digital TV receiver module is judged.Digital TV receiving system the invention enables direct broadcasting satellite can be ensured in terms of positioning and position not cheated.
Description
Technical field
The present invention relates to digital television broadcasting field, more particularly to a kind of LNB modules with the deception of anti-one-segment radio frequency
And corresponding receiver
Background technology
Satellite navigation and location system can realize unobstructed any place, the positioning of any time.Satellite navigation positioning system
System includes the Big Dipper second generation satellite navigation and location system of China, the GPS global navigation satellite systems in the U.S., Russian
GLONASS satellite navigation and location system, the Galileo satellite navigation positioning system signal of European Union, and other regional satellites are led
Boat positioning system signal.Described Beidou satellite navigation and positioning system, comprising three radiofrequency signals of frequency, referred to as B1 is frequently
Point, B2 frequencies, B3 frequencies.Described GPS satellite navigation alignment system, comprising three radiofrequency signals of frequency, referred to as L1 is frequently
Point, L2 frequencies, L5 frequencies.Described GLONASS satellite navigation and location system, the radiofrequency signal comprising two frequency bins, referred to as
G1 frequencies, G2 frequencies.Described Galileo satellite navigation alignment system, comprising three radiofrequency signals of frequency, referred to as E1 is frequently
Point, E5 frequencies, E6 frequencies.The similar radiofrequency signal of frequency is typically collectively referred to as frequency range.For example L1 frequency ranges can include B1 frequencies, L1
Frequency, G1 frequencies, E1 frequencies.L2 frequency ranges can include L2 frequencies, G2 frequencies, B2 frequencies.L5 frequency ranges can include L5 frequencies, and B3 is frequently
Point, E5 frequencies, E6 frequencies.
Satellite navigation location receiver is easily subject to cheating for false satellite RF signal, does the positioning knot for making mistake
Really, location of mistake is reported to application system, causes the security system for relying on satellite fix to be cheated, produce security breaches.One
Plant the curve that common radio frequency deception measures are the citizens' radio bands for only broadcasting conventional, such as L1 signals+B1 signals+G1 signals
+ E1 signals.The radio frequency curve of this only one of which frequency range, than the radio frequency curve of multiband, cost is relatively low, in deception
It is more popular in equipment.
The digital TV receiving system of direct broadcasting satellite, need to according to position, it is determined that be rural area receive or city receive, with this
Realize different management and control measures.Position and position are not important demands by deception.The Digital TV Receiving system of direct broadcasting satellite
System, location-authentication function enables satellite positioning tech, has been means commonly used in the trade, will turn into standard.
Therefore, those skilled in the art is devoted to a kind of LNB modules and right with the deception of anti-one-segment radio frequency of exploitation
The receiver answered so that the digital TV receiving system of direct broadcasting satellite can not be cheated aspect and be protected in positioning and position
Card.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are how to realize direct broadcasting satellite
Digital TV receiving system can not cheated in positioning and position.
To achieve the above object, the invention provides a kind of LNB modules with the deception of anti-one-segment radio frequency, including satellite
Live DTV LNB modules, satellite positioning antennas circuit module and radiofrequency signal fusion circuit module, wherein, the radio frequency
Signal fused circuit module is configured as the direct broadcasting satellite DTV LNB modules and satellite positioning antennas circuit module
Two-way radiofrequency signal unites two into one.
Further, the satellite positioning antennas circuit module is double frequency or multifrequency.
Further, the LNB modules also include feeder, and the feeder is configured as connection satellite-signal and connects
Receipts machine.
Present invention also offers a kind of direct broadcasting satellite digital television receiver, including with the deception of anti-one-segment radio frequency
LNB modules, radiofrequency signal split circuit module, direct broadcasting satellite digital TV receiver module and satellite navigation position receiver module,
Wherein, the LNB modules with the deception of anti-one-segment radio frequency include direct broadcasting satellite DTV LNB modules, satellite fix day
Line circuit module and radiofrequency signal fusion circuit module, wherein, the radiofrequency signal fusion circuit module is configured as will be described
The two-way radiofrequency signal of direct broadcasting satellite DTV LNB modules and satellite positioning antennas circuit module unites two into one；The satellite
Navigator fix receiver module is configured to consistency check algorithm, and alarm signal is sent to the deception of one-segment radio frequency, notifies
The direct broadcasting satellite digital TV receiver module is judged.
Further, the satellite positioning antennas circuit module is double frequency or multifrequency.
Further, the satellite navigation position receiver module is double frequency or multifrequency.
Further, the direct broadcasting satellite digital television receiver also includes feeder, and the feeder is configured
To connect fusion circuit module and the radiofrequency signal split circuit module.
Further, the consistency check algorithm is included by checking the consistent of the framing signal parameter in two frequency ranges
Property, detect the false satellite RF signal of one-segment.
Further, the framing signal parameter is the position coordinates that positioning draws, if the institute drawn in two frequency ranges
It is very big that rheme puts coordinate difference, then judge there is radio frequency deception.
The main object of the present invention, is the double frequency satellite by the LNB modules of direct broadcasting satellite DTV and satellite fix
Position antenna circuit is united two into one, and the double frequency satellite fix that direct broadcasting satellite digital television receiver is cheated with anti-one-segment radio frequency is connect
Receipts machine unites two into one, by the antenna of LNB (Low Noise Block, low noise block downconverter or tuner), antenna and receiver
Feeder line also unites two into one, and has both realized anti-one-segment radio frequency deception function, it is ensured that direct broadcasting satellite digital television receiver position
Authentication function it is credible, also save the consumption of feeder, realize low cost target.
The satellite navigation location receiver of dual frequency reception, the framing signal Algorithm for Consistency Checking of built-in two frequency ranges, can
To identify the deception of one-segment radiofrequency signal, the credible use scope of two-in-one device is increased.
The LNB modules of direct broadcasting satellite DTV unite two into one with the dual-band antenna circuit of satellite fix, by two antennas
System is combined together, and space is saved with the complexity installed, it is ensured that the signal quality that antenna is installed, due to antenna system
Unite two into one, two-way radiofrequency signal unites two into one, feeder is also reduced to one by two, save the feeder line consumptive material of installation
With wire harness, prevention at radio-frequency port reduces installation difficulty.The receiver for uniting two into one, not only realizes location-authentication mechanism, Er Qieshi
Function with the deception of anti-one-segment radio frequency, with more preferable security, be provided simultaneously with novelty realizes framework, brings installation
It is convenient and reliable.
The technique effect of design of the invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the invention.
Specific embodiment
Configure and combine below in conjunction with specific circuit, treatment framework of the invention is elaborated：
Fig. 1 is the structural representation of a preferred embodiment of the present invention.The LNB modules 1 include direct broadcasting satellite numeral electricity
Depending on LNB modules 2, the dual-band antenna circuit 3 of satellite fix, the fusion circuit 4 that two-way radiofrequency signal is united two into one；Described one
Individual feeder 5, the corresponding receiver 6 includes：Radiofrequency signal split circuit 7, direct broadcasting satellite digital television receiver 8,
The satellite navigation location receiver 9 of dual frequency reception.
Working mechanism of the invention is that the LNB modules 1 receive satellite TV signal and satellite positioning signal simultaneously, is led to
Fusion circuit 3 is crossed, as radiofrequency signal all the way, through feeder 4, is transferred in the receiver 6, by after split circuit 7,
Respective receiver function is each passed to, wherein dual frequency reception satellite navigation location receiver 9 is calculated by internal consistency inspection
Method, can cheat to one-segment radio frequency, send alarm signal, notify that the direct broadcasting satellite digital television receiver 8 is judged,
So as to protect direct broadcasting satellite digital television receiver location-authentication function, normal work not to be influenceed by curve.
Two-band receives satellite positioning receiver, and built-in detecting algorithm, by checking the framing signal in two frequency ranges
The uniformity of parameter, detects the false satellite RF signal of one-segment, and makes corresponding safety measure, realize positioning not by
The target of deception.
For common one-segment radio frequency curve, the satellite navigation framing signal of same frequency range can only be suppressed, for another
The satellite navigation framing signal of outer frequency range has no significant effect.The satellite navigation location receiver that single-frequency is received will receive deception radio frequency
Signal, causes positioning to be spoofed；The satellite positioning receiver that two-band is received will receive one and take advantage of in this kind of deception environment
Radiofrequency signal and a normal radio frequency signal are deceived, thus possesses the chance of detecting spurious signal.
Two-band receive satellite positioning receiver, built-in all kinds of detecting algorithms, by process deception radiofrequency signal with just
Normal radiofrequency signal, therefrom extracts every inner parameter of satellite positioning signal, and from the inconsistency of the two, judgement has false letter
Number presence.
The satellite positioning receiver that two-band is received, it is possible to use deception radiofrequency signal location-independent, it is also possible to using just
Normal radiofrequency signal location-independent, no matter being positioned using single system, also or multisystem combined positioning, the notable difference of the two positioning
The criterion that can exist as spurious signal.
The satellite positioning receiver that two-band is received, can extract pseudo-range measurements from deception radiofrequency signal, it is also possible to
Pseudo-range measurements are extracted from normal radio frequency signal, the measured value of two frequency bins has similitude in same place synchronization,
There is no obvious deviation in the same time in different location, the criterion that can exist as spurious signal.
The satellite positioning receiver that two-band is received, can extract satellite information with navigation electricity from deception radiofrequency signal
Text, it is also possible to satellite information and navigation message are extracted from normal radio frequency signal, for same satellite navigation and location system,
The satellite information of two frequency bins has uniformity with navigation message in same place synchronization, is not deposited in the same time in different location
In obvious deviation, the criterion that can exist as spurious signal.
Two-band receive satellite positioning receiver, can from two radiofrequency signals of frequency range difference extract ionosphere it is inclined
Difference and radiofrequency signal group delay.From deception radiofrequency signal with normal radio frequency signal difference extraction ionosphere deviation and penetrate
Frequency signal group delay, the ionosphere deviation and radiofrequency signal group delay that will be extracted with difference in two normal radio frequency signals, deposits
Deviate and criterion that is uncoordinated, can existing as spurious signal obvious.
The satellite positioning receiver that two-band is received, still there is the inner parameter that much for may compare, and is calculated as uniformity
The basis for estimation of method.These algorithmic methods are all the inconsistencies that make use of curve and normal signal, are all of the invention
Different implementations.
Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill of this area is without wound
The property made work just can make many modifications and variations with design of the invention.Therefore, all technical staff in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. it is a kind of with anti-one-segment radio frequency deception LNB modules, it is characterised in that including direct broadcasting satellite DTV LNB moulds
Block, satellite positioning antennas circuit module and radiofrequency signal fusion circuit module, wherein, the radiofrequency signal merges circuit module quilt
It is configured to for the two-way radiofrequency signal of the direct broadcasting satellite DTV LNB modules and satellite positioning antennas circuit module to close two and is
One.
2. there is the LNB modules of anti-one-segment radio frequency deception as claimed in claim 1, it is characterised in that the satellite fix
Antenna circuit module is double frequency or multifrequency.
3. there is the LNB modules of anti-one-segment radio frequency deception as claimed in claim 1, it is characterised in that the LNB modules are also
Including feeder, the feeder is configured as connecting satellite signal receiver.
4. a kind of direct broadcasting satellite digital television receiver, it is characterised in that including the LNB moulds cheated with anti-one-segment radio frequency
Block, radiofrequency signal split circuit module, direct broadcasting satellite digital TV receiver module and satellite navigation position receiver module, wherein,
The LNB modules with the deception of anti-one-segment radio frequency include direct broadcasting satellite DTV LNB modules, satellite positioning antennas circuit
Module and radiofrequency signal fusion circuit module, wherein, the radiofrequency signal fusion circuit module is configured as the satellite is straight
The two-way radiofrequency signal of broadcast digital television LNB modules and satellite positioning antennas circuit module unites two into one；The satellite navigation is determined
Position receiver module is configured to consistency check algorithm, one-segment radio frequency is cheated and sends alarm signal, is defended described in notice
The live digital TV receiver module of star is judged.
5. direct broadcasting satellite digital television receiver as claimed in claim 4, it is characterised in that the satellite positioning antennas circuit
Module is double frequency or multifrequency.
6. direct broadcasting satellite digital television receiver as claimed in claim 4, it is characterised in that the satellite navigation position receiver
Module is double frequency or multifrequency.
7. direct broadcasting satellite digital television receiver as claimed in claim 4, it is characterised in that the direct broadcasting satellite DTV
Receiver also includes feeder, and the feeder is configured as connecting the fusion circuit module and the radiofrequency signal point
From circuit module.
8. direct broadcasting satellite digital television receiver as claimed in claim 4, it is characterised in that the consistency check algorithm bag
The uniformity by checking the framing signal parameter in two frequency ranges is included, the false satellite RF signal of one-segment is detected.
9. direct broadcasting satellite digital television receiver as claimed in claim 8, it is characterised in that the framing signal parameter is fixed
The position coordinates that position draws, if the position coordinates difference drawn in two frequency ranges is very big, there is radio frequency deception in judgement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170224.2A CN106791725A (en) | 2016-12-16 | 2016-12-16 | A kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170224.2A CN106791725A (en) | 2016-12-16 | 2016-12-16 | A kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106791725A true CN106791725A (en) | 2017-05-31 |
Family
ID=58892421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170224.2A Pending CN106791725A (en) | 2016-12-16 | 2016-12-16 | A kind of LNB modules with the deception of anti-one-segment radio frequency and corresponding receiver |
Country Status (1)
| Country | Link |
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| CN (1) | CN106791725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112400286A (en) * | 2018-07-11 | 2021-02-23 | 韦斯特尔电子工业和贸易有限责任公司 | Satellite dish LNB, satellite broadcast signal receiver and method of operating the same |
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| US20060248559A1 (en) * | 2005-04-29 | 2006-11-02 | The Directv Group, Inc. | Merging of multiple encoded audio-video streams into one program with source clock frequency locked and encoder clock synchronized |
| CN101487886A (en) * | 2008-01-16 | 2009-07-22 | 中国科学院国家天文台 | Method for implementing satellite navigation positioning by different navigation frequency band |
| CN102207549A (en) * | 2010-05-05 | 2011-10-05 | 北京泰豪联星技术有限公司 | Integrated anti-interference satellite navigation receiving system and anti-interference processing method thereof |
| CN104155663A (en) * | 2014-08-19 | 2014-11-19 | 清华大学 | Anti-spoofing-attack method and system applied to satellite navigation system |
| CN105744333A (en) * | 2016-03-18 | 2016-07-06 | 泰斗微电子科技有限公司 | LNB module used for receiving satellite television signals and corresponding satellite television set top box |
| CN106093978A (en) * | 2016-06-30 | 2016-11-09 | 郑州威科姆科技股份有限公司 | A kind of anti-spoofing formula interference signal processing method of GNSS time service type DVB |
-
2016
- 2016-12-16 CN CN201611170224.2A patent/CN106791725A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060248559A1 (en) * | 2005-04-29 | 2006-11-02 | The Directv Group, Inc. | Merging of multiple encoded audio-video streams into one program with source clock frequency locked and encoder clock synchronized |
| CN101487886A (en) * | 2008-01-16 | 2009-07-22 | 中国科学院国家天文台 | Method for implementing satellite navigation positioning by different navigation frequency band |
| CN102207549A (en) * | 2010-05-05 | 2011-10-05 | 北京泰豪联星技术有限公司 | Integrated anti-interference satellite navigation receiving system and anti-interference processing method thereof |
| CN104155663A (en) * | 2014-08-19 | 2014-11-19 | 清华大学 | Anti-spoofing-attack method and system applied to satellite navigation system |
| CN105744333A (en) * | 2016-03-18 | 2016-07-06 | 泰斗微电子科技有限公司 | LNB module used for receiving satellite television signals and corresponding satellite television set top box |
| CN106093978A (en) * | 2016-06-30 | 2016-11-09 | 郑州威科姆科技股份有限公司 | A kind of anti-spoofing formula interference signal processing method of GNSS time service type DVB |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112400286A (en) * | 2018-07-11 | 2021-02-23 | 韦斯特尔电子工业和贸易有限责任公司 | Satellite dish LNB, satellite broadcast signal receiver and method of operating the same |
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Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |