CN104635244A - Anti-interference antenna on satellite navigation receiver - Google Patents
Anti-interference antenna on satellite navigation receiver Download PDFInfo
- Publication number
- CN104635244A CN104635244A CN201510054894.7A CN201510054894A CN104635244A CN 104635244 A CN104635244 A CN 104635244A CN 201510054894 A CN201510054894 A CN 201510054894A CN 104635244 A CN104635244 A CN 104635244A
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- China
- Prior art keywords
- antenna
- frequency
- radio
- satellite navigation
- navigation receiver
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Classifications
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- 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
-
- 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
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/36—Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention discloses an anti-interference antenna on a satellite navigation receiver, comprising an antenna array, a radio-frequency front-end module, a down-conversion module, a self-adaption processing module and a beam forming network, wherein the antenna array, the radio-frequency front-end module, the down-conversion module, the self-adaption processing module and the beam forming network are connected orderly; the antenna array includes a disc and N micro-strip antenna elements on the surface of the disc; a power inversion algorithm is mounted in the antenna array; the radio-frequency front-end module includes N radio-frequency front ends; each of the radio-frequency front ends includes a first band-pass filter, an amplifier, a frequency mixer, a second band-pass filter and an intermediate frequency amplifier that are connected orderly; a radio-frequency intrinsic signal generator is connected with the frequency mixers; the down-conversion module includes N down converters; the self-adaption processing module comprises N self-adaption processors; a self-adaption algorithm is mounted in the self-adaption processors respectively; and N is more than or equal to 4 and less than or equal to 7. The anti-interference antenna is simple in structure, rational in design, easy in operation, good in anti-interference effect and wide in application range.
Description
Technical field
The present invention relates to satellite navigation positioning technical field, particularly relate to the anti-interference antenna on a kind of satellite navigation receiver.
Background technology
Global navigation satellite system (GNSS=Global Navigation Satellite System) is a kind of radio navigation system based on satellite.System can send high precision, round-the-clock, round-the-clock, real-time continuously navigation, location and time service information, is a kind of information resources shared for the army and the people user in aeroamphibious field.Satellite navigation location refers to and utilizes satellite navigation and location system to provide the information such as position, speed and time to come location to various target, navigation, monitoring and management.
At present, global navigation satellite system GNSS contains the GPS of the U.S., Muscovite GLONASS, the Compass (Big Dipper) of China, the Galileo system of European Union, and available number of satellite reaches more than 100.
When the satellite-signal launched due to satellite navigation arrives ground receiver user quite faint (approximately-160dBW), than the thermonoise also low about 30dB of receiver, faint interference just may cause the instability of satellite navigation receiver, particularly artificial pernicious interference, cause system accuracy reduction even normally cannot work, lose homing capability, satellite navigation Anti-Jamming Technique has become the key issue that satellite navigation receiver is badly in need of solving.
Summary of the invention
The object of the present invention is to provide the anti-interference antenna on a kind of satellite navigation receiver, structure is simple, anti-jamming effectiveness good, achieves 360 ° of omnibearing Signal reception.
For achieving the above object, the invention provides following technical scheme:
An anti-interference antenna on satellite navigation receiver, comprises the antenna array, RF front-end module, down conversion module, self-adaptive processing module and the beam-forming network that connect successively; Described antenna array comprises disk and is arranged on N number of microstrip antenna element of disc surfaces, and adjacent array element distance gets 1/2 of Received signal strength center frequency wavelength, described antenna array built-in power inversion algorithm; Described RF front-end module comprises N number of radio-frequency front-end, described radio-frequency front-end comprises the first bandpass filter, amplifier, frequency mixer, radio-frequency (RF) local oscillator signal generator, the second bandpass filter and intermediate frequency amplifier, described first bandpass filter is connected with intermediate frequency amplifier by amplifier, frequency mixer, the second bandpass filter successively, and described radio-frequency (RF) local oscillator signal generator is connected with frequency mixer; Described down conversion module comprises N number of low-converter; Described self-adaptive processing module comprises N number of adaptive processor, with adaptive algorithm in described adaptive processor; Wherein, 4≤N≤7.
As the further scheme of the present invention: with Power-inversion algorithm in described antenna array.
As the further scheme of the present invention: described disk is provided with radial movement mechanism, described radial movement mechanism is connected with disk by chute.
As the further scheme of the present invention: described antenna array is N unit circular array, wherein 1 microstrip antenna element is arranged on the home position of disk, all the other N-1 microstrip antenna element is fixed on radial movement mechanism, and N-1 microstrip antenna element is arranged in this microstrip antenna element, and to be the center of circle circumferentially same.
As the further scheme of the present invention: described microstrip antenna element is square microband paste, the surface, diagonal line center of described square microband paste has four radius.
As the further scheme of the present invention: described microstrip antenna element is double-layer paster antenna, the bottom layer of patches of described double-layer paster antenna has U-type groove.
As the further scheme of the present invention: described N is 4.
Compared with prior art, the invention has the beneficial effects as follows: the present invention, by the conglobate Signal reception overlay area of N number of microstrip antenna shape of improving, achieves 360 ° of omnibearing Signal reception.Under the effect that moves radially of radial movement mechanism, the present invention can adjust adjacent microstrip antenna element spacing, thus effectively suppresses potential interference or artificial interference, ensures normally resolving of satellite navigation receiver navigation data.Structure of the present invention is simple, reasonable in design, is easy to realize, and anti-jamming effectiveness is good, applied widely.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the anti-interference antenna on a kind of satellite navigation receiver;
Fig. 2 is the RF front-end module structured flowchart of the anti-interference antenna on a kind of satellite navigation receiver.
Embodiment
Below in conjunction with the embodiment of the present invention and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 2, in the embodiment of the present invention, the anti-interference antenna on a kind of satellite navigation receiver, comprises the antenna array, RF front-end module, down conversion module, self-adaptive processing module and the beam-forming network that connect successively; Antenna array comprises disk and N number of microstrip antenna element, N number of microstrip antenna element is arranged on disc surfaces, 4≤N≤7, adjacent array element distance gets 1/2 of Received signal strength center frequency wavelength, antenna array built-in power inversion algorithm, disk is provided with a radial movement mechanism, and radial movement mechanism is connected with disk by chute; RF front-end module comprises N number of radio-frequency front-end, radio-frequency front-end comprises the first bandpass filter, amplifier, frequency mixer, radio-frequency (RF) local oscillator signal generator, the second bandpass filter and intermediate frequency amplifier, wherein, first bandpass filter, amplifier, frequency mixer, the second bandpass filter are connected successively with intermediate frequency amplifier, and radio-frequency (RF) local oscillator signal generator connects frequency mixer input local oscillation signal; Down conversion module comprises N number of low-converter, for converting digital signal to simulating signal; Self-adaptive processing module comprises N number of adaptive processor, the built-in adaptive algorithm of described adaptive processor, and the arrival bearing according to adaptive spatial filter or beam forming algorithm and estimation produces weights; Beam-forming network carries out dynamic self-adapting weighting process, to produce the adaptive beam of expectation.
In the embodiment of the present invention, antenna array is 4 yuan of circular arrays, wherein 1 microstrip antenna element is arranged on the home position of disk, all the other 3 microstrip antenna elements are fixed on radial movement mechanism, and these 3 microstrip antenna elements are arranged in this microstrip antenna element, and to be the center of circle circumferentially same, these 3 microstrip antenna elements can move radially on disk with radial movement mechanism, to adjust array element distance, reach better anti-jamming effectiveness.
In order to the problem that the bandwidth solving microstrip antenna is partially narrow, surface, diagonal line center can be selected to have the square microband paste of four radius as microstrip antenna element, double-layer overlapping paster can also be selected and bottom layer of patches has the double-layer paster antenna of U-type groove as microstrip antenna element, all can increase substantially bandwidth.
The built-in Power-inversion algorithm of antenna array is to the useful signal received and undesired signal, all suppressed, its beam pattern produces zero at each useful signal and undesired signal direction and falls into, and signal is stronger, corresponding zero is sunken darker, ideal to the elimination of high reject signal, thus this array is very effective to the reception of feeble signal.
The principle of work of the anti-interference antenna on described satellite navigation receiver is: after antenna array Received signal strength, radio-frequency front-end carries out filtering and amplification to the received signal, the simulating signal received is converted to digital signal and is convenient to process by low-converter, adaptive processor respectively pin is weighted to the received signal, beam-forming network carries out overall treatment to produce the adaptive beam expected to weighted signal, thus elimination undesired signal, receive useful signal.
Microstrip antenna of the present invention utilizes adaptive beamforming technology to form radiation pattern zero at undesired signal arrival direction and falls into, and forms zero point, play shielding action with this to undesired signal in interference wave direction.
The present invention, by the conglobate Signal reception overlay area of N number of microstrip antenna shape of improving, achieves 360 ° of omnibearing Signal reception.Under the effect that moves radially of radial movement mechanism, the present invention can adjust adjacent microstrip antenna element spacing, thus effectively suppresses potential interference or artificial interference, ensures normally resolving of satellite navigation receiver navigation data.Structure of the present invention is simple, reasonable in design, is easy to realize, and anti-jamming effectiveness is good, applied widely.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. the anti-interference antenna on satellite navigation receiver, is characterized in that, comprises the antenna array, RF front-end module, down conversion module, self-adaptive processing module and the beam-forming network that connect successively; Described antenna array comprises disk and is arranged on N number of microstrip antenna element of disc surfaces, and adjacent array element distance gets 1/2 of Received signal strength center frequency wavelength, described antenna array built-in power inversion algorithm; Described RF front-end module comprises N number of radio-frequency front-end, described radio-frequency front-end comprises the first bandpass filter, amplifier, frequency mixer, radio-frequency (RF) local oscillator signal generator, the second bandpass filter and intermediate frequency amplifier, described first bandpass filter is connected with intermediate frequency amplifier by amplifier, frequency mixer, the second bandpass filter successively, and described radio-frequency (RF) local oscillator signal generator is connected with frequency mixer; Described down conversion module comprises N number of low-converter; Described self-adaptive processing module comprises N number of adaptive processor, with adaptive algorithm in described adaptive processor; Wherein, 4≤N≤7.
2. the anti-interference antenna on satellite navigation receiver according to claim 1, is characterized in that, with Power-inversion algorithm in described antenna array.
3. the anti-interference antenna on satellite navigation receiver according to claim 1, it is characterized in that, described disk is provided with radial movement mechanism, described radial movement mechanism is connected with disk by chute.
4. the anti-interference antenna on satellite navigation receiver according to claim 3, it is characterized in that, described antenna array is N unit circular array, wherein 1 microstrip antenna element is arranged on the home position of disk, all the other N-1 microstrip antenna element is fixed on radial movement mechanism, and N-1 microstrip antenna element is arranged in this microstrip antenna element, and to be the center of circle circumferentially same.
5. the anti-interference antenna on satellite navigation receiver according to claim 1, is characterized in that, described microstrip antenna element is square microband paste, and the surface, diagonal line center of described square microband paste has four radius.
6. the anti-interference antenna on satellite navigation receiver according to claim 1, is characterized in that, described microstrip antenna element is double-layer paster antenna, and the bottom layer of patches of described double-layer paster antenna has U-type groove.
7. the anti-interference antenna on satellite navigation receiver according to claim 1, is characterized in that, described N is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054894.7A CN104635244A (en) | 2015-02-03 | 2015-02-03 | Anti-interference antenna on satellite navigation receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054894.7A CN104635244A (en) | 2015-02-03 | 2015-02-03 | Anti-interference antenna on satellite navigation receiver |
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| CN104635244A true CN104635244A (en) | 2015-05-20 |
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| CN201510054894.7A Pending CN104635244A (en) | 2015-02-03 | 2015-02-03 | Anti-interference antenna on satellite navigation receiver |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291605A (en) * | 2016-08-30 | 2017-01-04 | 北京航天长征飞行器研究所 | A kind of satellite navigation anti-interference reception system |
| CN106646528A (en) * | 2016-11-03 | 2017-05-10 | 中国科学院云南天文台 | System and method of eliminating interference on navigation signals by solar radio burst based on auxiliary antenna |
| CN106980126A (en) * | 2017-05-05 | 2017-07-25 | 湖北航天技术研究院总体设计所 | The anti-interference satellite navigation receiver of three diversity |
| CN107247274A (en) * | 2017-06-27 | 2017-10-13 | 重庆九洲星熠导航设备有限公司 | A kind of four quick self-adapted methods of array element anti-interference antenna passage |
| CN108519608A (en) * | 2018-03-09 | 2018-09-11 | 中国航天电子技术研究院 | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method |
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| CN101420066A (en) * | 2008-11-21 | 2009-04-29 | 中国电子科技集团公司第三十八研究所 | Wideband single layer microstrip patch antenna |
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| CN104076368A (en) * | 2014-06-25 | 2014-10-01 | 芜湖航飞科技股份有限公司 | GPS anti-interference antenna technology |
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Patent Citations (4)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291605A (en) * | 2016-08-30 | 2017-01-04 | 北京航天长征飞行器研究所 | A kind of satellite navigation anti-interference reception system |
| CN106291605B (en) * | 2016-08-30 | 2018-08-21 | 北京航天长征飞行器研究所 | A kind of satellite navigation anti-interference reception system |
| CN106646528A (en) * | 2016-11-03 | 2017-05-10 | 中国科学院云南天文台 | System and method of eliminating interference on navigation signals by solar radio burst based on auxiliary antenna |
| CN106980126A (en) * | 2017-05-05 | 2017-07-25 | 湖北航天技术研究院总体设计所 | The anti-interference satellite navigation receiver of three diversity |
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| CN107247274A (en) * | 2017-06-27 | 2017-10-13 | 重庆九洲星熠导航设备有限公司 | A kind of four quick self-adapted methods of array element anti-interference antenna passage |
| CN108519608A (en) * | 2018-03-09 | 2018-09-11 | 中国航天电子技术研究院 | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method |
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Application publication date: 20150520 |
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