CN104251996A - Beidou anti-interference equipment with anti-interference shift switch, and processing method - Google Patents
Beidou anti-interference equipment with anti-interference shift switch, and processing method Download PDFInfo
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- CN104251996A CN104251996A CN201310255613.5A CN201310255613A CN104251996A CN 104251996 A CN104251996 A CN 104251996A CN 201310255613 A CN201310255613 A CN 201310255613A CN 104251996 A CN104251996 A CN 104251996A
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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
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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)
- Noise Elimination (AREA)
Abstract
The invention discloses a Beidou anti-interference equipment with an anti-interference shift switch, and a processing method. The equipment comprises a signal reception preprocessing system, a signal processing system and a signal output system, wherein the signal reception preprocessing system comprises signal reception equipment, a radio frequency channel amplifier, a down conversion processor and an analog-to-digital converter (ADC), the signal processing system comprises an anti-interference processor with the anti-interference shift switch and a baseband signal processor, and the signal output system comprises back-end signal display and data exchange equipment. After the signal reception equipment receives a signal, the signal reception equipment carries out amplification, down conversion, analog-to-digital conversion, interference identification, anti-interference and baseband signal processing, and then display, data exchange and storage of the processed signal are carried out at the back-end signal display and data exchange equipment; shift selection is realized through the switch, so power consumption of a system can be reduced.
Description
Technical field
The present invention relates to a kind of Big Dipper receiving equipment, particularly a kind of by judging to disturb the Big Dipper anti-interference equipment and the disposal route that whether there is the anti-interference change-over switch of the band switching anti-interference process.
Background technology
Along with the communication environment increasingly worsened, Beidou receiver is easily subject to the impact of various interference (comprising various being not intended to and artificial interference), thus make the bit error rate of Received signal strength increase, cause receiver normally to work, so carry out anti-interference process just seem very important.But when anti-interference process starts, extra system power dissipation can be brought, therefore under some does not need the situation (as interference does not exist or disturbs very little) of carrying out anti-interference process, be necessary to close anti-interference process function to reduce entire system power consumption.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, one is provided to utilize DFT computing and analysis of spectrum, effectively can complete the identification to arrowband interference, thus carry out anti-interference process, effectively can reduce the bit error rate of Received signal strength, switched by switch, select whether carry out anti-interference process, effectively can reduce Big Dipper anti-interference equipment and the disposal route of the anti-interference change-over switch of band of system power dissipation.
The object of the invention is to be achieved through the following technical solutions: with the Big Dipper anti-interference equipment of anti-interference change-over switch, comprise Signal reception pretreatment system, signal processing system and signal output system, described Signal reception pretreatment system comprises signal receiver, radio-frequency channel amplifier, down-converted device and analog to digital converter ADC, described signal processing system comprises the anti-interference process device and baseband signal processor of being with anti-interference change-over switch, described signal output system comprises back end signal display and switch, signal receiver connects radio-frequency channel amplifier successively, down-converted device, analog to digital converter ADC, anti-interference process device and baseband signal processor, baseband signal processor shows with back end signal and is connected with switch.
Described anti-interference process device comprises anti-interference switching switch circuit and anti-interference process device, anti-interference switching switch circuit comprises anti-interference process module, anti-interference enable switch, clock signal unit and selector switch, the output signal of analog to digital converter ADC is connected with selector switch with anti-interference process module respectively with the output signal of clock signal unit, the output of anti-interference process module connects selector switch, the input of selector switch is also connected with anti-interference enable switch, the output of selector switch is connected with anti-interference process device, the output of anti-interference process device connects baseband signal processor.
With the Big Dipper anti-interference processing method of anti-interference change-over switch, it comprises the following steps:
S1: build signal receiving device;
S2: Received signal strength, and carry out pre-service to the received signal, described pre-service comprises following sub-step:
S21: use signal receiver Received signal strength;
S22: the signal received is carried out amplification process by radio-frequency channel amplifier;
S23: the signal after amplifying is carried out down-converted through the process of down-converted device;
S24: the signal through down-converted is carried out the conversion of simulating signal to digital signal by analog to digital converter ADC;
S3: carry out disturbance ecology and anti-interference process, then carry out base band signal process, comprise following sub-step:
S31: carry out disturbance ecology to pretreated signal, judges whether interference exists to select whether to carry out anti-interference process;
S32: carry out base band signal process to the signal obtained after step S31 process, namely carries out Recovery processing to signal, makes it meet the needs of display, storage, exchanges data;
S4: the back end signal display of the signal after process is shown with switch, and carries out storage and the exchange of signal.
The interference identification method of step S31 comprises following sub-step:
S3101: carry out DFT computing to the received signal to calculate each value of frequency point;
S3102: carry out adding up to the data after DFT calculation process and ask mould to obtain spectral type curve;
S3103: disturb by asking peak-to-average force ratio to have judged whether arrowband and exist, if exist, carry out frequency domain filtering anti-interference process.
The invention has the beneficial effects as follows:
1, utilize DFT computing and analysis of spectrum, effectively can complete the identification to arrowband interference, thus carry out anti-interference process, effectively can reduce the bit error rate of Received signal strength, reduce the impact of various interference on communication;
2, anti-interference process device is with anti-interference switch, judge whether there is interference, if there is undesired signal, then carry out anti-interference process, if there is not interference, then do not select anti-interference process, switched by switch, effectively can reduce system power dissipation, through experimental verification, the highest power consumption that can reduce 1w.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is anti-interference switch commutation circuit figure;
Fig. 3 is interference identification method process flow diagram of the present invention.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing, but the content that the present invention protects is not limited to the following stated.
As shown in Figure 1, with the Big Dipper anti-interference equipment of anti-interference change-over switch, comprise Signal reception pretreatment system, signal processing system and signal output system, described Signal reception pretreatment system comprises signal receiver, radio-frequency channel amplifier, down-converted device and analog to digital converter ADC, described signal processing system comprises the anti-interference process device and baseband signal processor of being with anti-interference change-over switch, described signal output system comprises back end signal display and switch, signal receiver connects radio-frequency channel amplifier successively, down-converted device, analog to digital converter ADC, anti-interference process device and baseband signal processor, baseband signal processor shows with back end signal and is connected with switch.
As Fig. 2 so, anti-interference process device comprises anti-interference switching switch circuit and anti-interference process device, anti-interference switching switch circuit comprises anti-interference process module, anti-interference enable switch, clock signal unit and selector switch, the output signal of analog to digital converter ADC is connected with selector switch with anti-interference process module respectively with the output signal of clock signal unit, the output of anti-interference process module connects selector switch, the input of selector switch is also connected with anti-interference enable switch, the output of selector switch is connected with anti-interference process device, the output of anti-interference process device connects baseband signal processor.
As shown in Figure 3, with the Big Dipper anti-interference processing method of anti-interference change-over switch, it comprises the following steps:
S1: build signal receiving device;
S2: Received signal strength, and carry out pre-service to the received signal, comprise following sub-step:
S21: use signal receiver Received signal strength;
S22: the signal received is carried out amplification process by radio-frequency channel amplifier;
S23: the signal after amplifying is carried out down-converted through the process of down-converted device;
S24: the signal through down-converted is carried out the conversion of simulating signal to digital signal by analog to digital converter ADC;
S3: carry out disturbance ecology and anti-interference process, then carry out base band signal process, comprise following sub-step:
S31: carry out disturbance ecology to pretreated signal, judges whether interference exists to select whether to carry out anti-interference process;
S32: carry out base band signal process to the signal obtained after step S31 process, namely carries out Recovery processing to signal, makes it meet the needs of display, storage, exchanges data;
S4: the back end signal display of the signal after process is shown with switch, and carries out storage and the exchange of signal.
The interference identification method of described step S31 comprises following sub-step:
S3101: carry out DFT computing to the received signal to calculate each value of frequency point;
S3102: carry out adding up to the data after DFT calculation process and ask mould to obtain spectral type curve;
S3103: disturb by asking peak-to-average force ratio to have judged whether arrowband and exist, if exist, carry out frequency domain filtering anti-interference process.
Claims (4)
1. be with the Big Dipper anti-interference equipment of anti-interference change-over switch, comprise Signal reception pretreatment system, signal processing system and signal output system, it is characterized in that: described Signal reception pretreatment system comprises signal receiver, radio-frequency channel amplifier, down-converted device and analog to digital converter ADC, described signal processing system comprises the anti-interference process device and baseband signal processor of being with anti-interference change-over switch, described signal output system comprises back end signal display and switch, signal receiver connects radio-frequency channel amplifier successively, down-converted device, analog to digital converter ADC, anti-interference process device and baseband signal processor, baseband signal processor shows with back end signal and is connected with switch.
2. the Big Dipper anti-interference equipment of the anti-interference change-over switch of band according to claim 1, it is characterized in that: described anti-interference process device comprises anti-interference switching switch circuit and anti-interference process device, anti-interference switching switch circuit comprises anti-interference process module, anti-interference enable switch, clock signal unit and selector switch, the output signal of analog to digital converter ADC is connected with selector switch with anti-interference process module respectively with the output signal of clock signal unit, the output of anti-interference process module connects selector switch, the input of selector switch is also connected with anti-interference enable switch, the output of selector switch is connected with anti-interference process device, the output of anti-interference process device connects baseband signal processor.
3. be with the Big Dipper anti-interference processing method of anti-interference change-over switch, it is characterized in that: it comprises the following steps:
S1: build signal receiving device;
S2: Received signal strength, and carry out pre-service to the received signal, described pre-service comprises following sub-step:
S21: use signal receiver Received signal strength;
S22: the signal received is carried out amplification process by radio-frequency channel amplifier;
S23: the signal after amplifying is carried out down-converted through the process of down-converted device;
S24: the signal through down-converted is carried out the conversion of simulating signal to digital signal by analog to digital converter ADC;
S3: carry out disturbance ecology and anti-interference process, then carry out base band signal process, comprise following sub-step:
S31: carry out disturbance ecology to pretreated signal, judges whether interference exists to select whether to carry out anti-interference process;
S32: carry out base band signal process to the signal obtained after step S31 process, namely carries out Recovery processing to signal, makes it meet the needs of display, storage, exchanges data;
S4: the back end signal display of the signal after process is shown with switch, and carries out storage and the exchange of signal.
4. the Big Dipper anti-interference processing method of the anti-interference change-over switch of band according to claim 3, is characterized in that: the interference identification method of described step S31 comprises following sub-step:
S3101: carry out DFT computing to the received signal to calculate each value of frequency point;
S3102: carry out adding up to the data after DFT calculation process and ask mould to obtain spectral type curve;
S3103: disturb by asking peak-to-average force ratio to have judged whether arrowband and exist, if exist, carry out frequency domain filtering anti-interference process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255613.5A CN104251996A (en) | 2013-06-25 | 2013-06-25 | Beidou anti-interference equipment with anti-interference shift switch, and processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255613.5A CN104251996A (en) | 2013-06-25 | 2013-06-25 | Beidou anti-interference equipment with anti-interference shift switch, and processing method |
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| CN104251996A true CN104251996A (en) | 2014-12-31 |
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| CN201310255613.5A Pending CN104251996A (en) | 2013-06-25 | 2013-06-25 | Beidou anti-interference equipment with anti-interference shift switch, and processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259559A (en) * | 2015-09-28 | 2016-01-20 | 湖南中森通信科技有限公司 | Beidou RDSS navigation type receiver narrowband interference detection and suppression method |
| CN110995335A (en) * | 2020-01-03 | 2020-04-10 | 成都国星通信有限公司 | Beidou short message receiving device and method supporting double antennas |
Citations (5)
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| CN1175329A (en) * | 1994-12-16 | 1998-03-04 | 夸尔柯姆股份有限公司 | Method and apparatus for increasing receiver immunity to interference |
| US20040095272A1 (en) * | 2002-11-18 | 2004-05-20 | Rf Micro Devices, Inc. | Saving power in a GPS receiver by controlling domain clocking |
| CN101536325A (en) * | 2006-11-14 | 2009-09-16 | Nxp股份有限公司 | A method of acquiring a received spread spectrum signal |
| CN102201875A (en) * | 2010-03-23 | 2011-09-28 | 卓胜微电子（上海）有限公司 | Narrowband interference detection method used for wireless communication receiving system |
| CN203299387U (en) * | 2013-06-25 | 2013-11-20 | 成都国星通信有限公司 | Beidou anti-interference equipment with anti-interference switching switch |
-
2013
- 2013-06-25 CN CN201310255613.5A patent/CN104251996A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175329A (en) * | 1994-12-16 | 1998-03-04 | 夸尔柯姆股份有限公司 | Method and apparatus for increasing receiver immunity to interference |
| US20040095272A1 (en) * | 2002-11-18 | 2004-05-20 | Rf Micro Devices, Inc. | Saving power in a GPS receiver by controlling domain clocking |
| CN101536325A (en) * | 2006-11-14 | 2009-09-16 | Nxp股份有限公司 | A method of acquiring a received spread spectrum signal |
| CN102201875A (en) * | 2010-03-23 | 2011-09-28 | 卓胜微电子（上海）有限公司 | Narrowband interference detection method used for wireless communication receiving system |
| CN203299387U (en) * | 2013-06-25 | 2013-11-20 | 成都国星通信有限公司 | Beidou anti-interference equipment with anti-interference switching switch |
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| Title |
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| 翟永刚: "导航接收机空域自适应干扰抑制技术研究及实现", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259559A (en) * | 2015-09-28 | 2016-01-20 | 湖南中森通信科技有限公司 | Beidou RDSS navigation type receiver narrowband interference detection and suppression method |
| CN110995335A (en) * | 2020-01-03 | 2020-04-10 | 成都国星通信有限公司 | Beidou short message receiving device and method supporting double antennas |
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Application publication date: 20141231 |