CN101435866A - Carrier wave tracking system and method of GPS coarse / capturing code signal - Google Patents
Carrier wave tracking system and method of GPS coarse / capturing code signal Download PDFInfo
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- CN101435866A CN101435866A CNA2008102272857A CN200810227285A CN101435866A CN 101435866 A CN101435866 A CN 101435866A CN A2008102272857 A CNA2008102272857 A CN A2008102272857A CN 200810227285 A CN200810227285 A CN 200810227285A CN 101435866 A CN101435866 A CN 101435866A
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Abstract
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Claims (11)
- A GPS thick/carrier wave tracking system of coarse/capturing code signal, comprise an input signal, be used for the loop that combines and form by FLL and phaselocked loop that input signal is handled, frequency discriminator in the loop, phase detector, frequency discriminator and phase detector are exported the loop filter that carries out filtering, and the digital controlled oscillator (NCO) that links to each other with loop filter output, it is characterized in that this FLL comprises four phase frequency discriminators and cross product frequency discriminator.
- 2. GPS according to claim 1 is thick/carrier wave tracking system of coarse/capturing code signal, it is characterized in that, the output frequency error expression of this four phases frequency discriminator is E (k)=[atan2 (Q (k), I (k))-atan2 (Q (k-1), I (k-1))]/T, atan2 () is four phase arctan functions in the formula, and T is an integration time interval.
- 3. GPS according to claim 1 is thick/carrier wave tracking system of coarse/capturing code signal, it is characterized in that the output frequency error expression of this cross product frequency discriminator is E (k)=I (k-1) Q (k)-I (k) Q (k-1).
- 4. GPS according to claim 1 is thick/carrier wave tracking system of coarse/capturing code signal, it is characterized in that, the output frequency error expression of this cross product frequency discriminator is E (k)=sign[I (k-1) I (k)-Q (k) Q (k-1)] .[I (k-1) Q (k)-I (k) Q (k-1)], sign () is-symbol function in the formula is to eliminate the influence of numeric data code symbol.
- 5. GPS according to claim 1 is thick/carrier wave tracking system of coarse/capturing code signal, it is characterized in that the output phase error expression formula of phaselocked loop phase detector is P (k)=atan (Q (k), I (k)), and atan () is an arctan function in the formula.
- 6. GPS according to claim 1 is thick/carrier wave tracking system of coarse/capturing code signal, it is characterized in that phaselocked loop is section's Stas ring.
- A GPS thick/carrier wave tracing method of coarse/capturing code signal, comprising:Step S500: the inphase quadrature integrated value is used cross product method calculated rate deviation, forward step S501 to;Step S501: whether the determination frequency deviation less than predeterminated frequency value f1, if, then forward step S503 to, otherwise, forward step S502 to;Step S502: use four phase frequency discriminator tracking frequencieies, forward step S507 to;Step S503: use arctan function to calculate phase deviation, forward step S504 to;Step S504: whether judge phase deviation less than preset value p1, if, then forward step S505 to, otherwise, forward step S506 to;Step S505: use the cross product frequency discriminator tracking frequencies of no symbols influence, forward step S507 to;Step S506: use the arc tangent phase detector to follow the tracks of phase place, forward step S507 to;Step S507: loop filtering is carried out in the output to frequency discriminator or phase detector, forwards step S508 to;Step S508: according to the output control digital controlled oscillator (NCO) of loop filter, adjust the local carrier wave that produces, return step S500.
- 8. GPS according to claim 7 is thick/carrier wave tracing method of coarse/capturing code signal, it is characterized in that the expression formula of the cross product method calculated rate error among the step S500 is E (k)=I (k-1) Q (k)-I (k) Q (k-1).
- 9. GPS according to claim 7 is thick/carrier wave tracing method of coarse/capturing code signal, it is characterized in that, the output frequency error expression of four phase frequency discriminators among the step S502 is E (k)=[atan2 (Q (k), I (k))-atan2 (Q (k-1), I (k-1))]/T, atan2 () is four phase arctan functions in the formula, and T is an integration time interval.
- 10. GPS according to claim 7 is thick/carrier wave tracing method of coarse/capturing code signal, it is characterized in that, the output frequency error expression of the cross product frequency discriminator of the no symbols influence among the step S505 is E (k)=sign[I (k-1) I (k)-Q (k) Q (k-1)] .[I (k-1) Q (k)-I (k) Q (k-1)], sign () is-symbol function in the formula.
- 11. GPS according to claim 7 is thick/carrier wave tracing method of coarse/capturing code signal, it is characterized in that, the output phase error expression formula of the arc tangent phase detector among the step S506 is P (k)=atan (Q (k), I (k)), and atan () is an arctan function in the formula.
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101930075A (en) * | 2009-06-26 | 2010-12-29 | 索尼公司 | Signal receiver and control method thereof and adopt it and the GPS equipment of method |
CN102801671A (en) * | 2012-07-20 | 2012-11-28 | 西安空间无线电技术研究所 | Carrier tracking device capable of adaptively adjusting parameters |
CN103152043A (en) * | 2013-02-05 | 2013-06-12 | 北京邮电大学 | Method and system for generating indoor signal frequency sources |
CN103837877A (en) * | 2012-11-21 | 2014-06-04 | 安凯(广州)微电子技术有限公司 | Method and device for satellite identification |
CN104242928A (en) * | 2014-08-20 | 2014-12-24 | 北京遥测技术研究所 | Frequency locking detector processing method based on cross product algorithm in frequency locking loop |
CN104467825A (en) * | 2014-12-12 | 2015-03-25 | 成都天奥电子股份有限公司 | Self-adaptive rapid crystal locking method based on Clean-up digital phase-locked loop |
CN104570016A (en) * | 2014-12-30 | 2015-04-29 | 北京航天科工世纪卫星科技有限公司 | Method for capturing, tracking and receiving Beidou signal of high-dynamic movement carrier |
CN106685875A (en) * | 2015-11-11 | 2017-05-17 | 台湾积体电路制造股份有限公司 | Carrier synchronization device |
CN104570015B (en) * | 2013-10-28 | 2017-07-25 | 安凯(广州)微电子技术有限公司 | A kind of frequency pulling method |
CN108490416A (en) * | 2018-05-21 | 2018-09-04 | 北京理工大学 | A kind of high dynamic carrier phase tracking method of pseudo-code modulation continuous wave radar echo |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6081228A (en) * | 1998-09-15 | 2000-06-27 | Sirf Technology, Inc. | Receiver phase-noise mitigation |
US7388539B2 (en) * | 2005-10-19 | 2008-06-17 | Hemisphere Gps Inc. | Carrier track loop for GNSS derived attitude |
CN101051081B (en) * | 2006-04-05 | 2011-02-09 | 中国科学院微电子研究所 | Variable-gain high-sensitivity GPS receiver baseband frequency tracking method |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101930075B (en) * | 2009-06-26 | 2016-01-20 | 索尼公司 | Signal receiver and control method thereof and adopt the GPS device of itself and method |
CN101930075A (en) * | 2009-06-26 | 2010-12-29 | 索尼公司 | Signal receiver and control method thereof and adopt it and the GPS equipment of method |
CN102801671A (en) * | 2012-07-20 | 2012-11-28 | 西安空间无线电技术研究所 | Carrier tracking device capable of adaptively adjusting parameters |
CN103837877A (en) * | 2012-11-21 | 2014-06-04 | 安凯(广州)微电子技术有限公司 | Method and device for satellite identification |
CN103837877B (en) * | 2012-11-21 | 2016-03-09 | 安凯(广州)微电子技术有限公司 | A kind of method and apparatus of satellite identification |
CN103152043A (en) * | 2013-02-05 | 2013-06-12 | 北京邮电大学 | Method and system for generating indoor signal frequency sources |
CN104570015B (en) * | 2013-10-28 | 2017-07-25 | 安凯(广州)微电子技术有限公司 | A kind of frequency pulling method |
CN104242928B (en) * | 2014-08-20 | 2017-04-19 | 北京遥测技术研究所 | Frequency locking detector processing method based on cross product algorithm in frequency locking loop |
CN104242928A (en) * | 2014-08-20 | 2014-12-24 | 北京遥测技术研究所 | Frequency locking detector processing method based on cross product algorithm in frequency locking loop |
CN104467825A (en) * | 2014-12-12 | 2015-03-25 | 成都天奥电子股份有限公司 | Self-adaptive rapid crystal locking method based on Clean-up digital phase-locked loop |
CN104467825B (en) * | 2014-12-12 | 2019-01-22 | 成都天奥电子股份有限公司 | A method of based on Clean-up digital servo-control loop self-adaptive quick lock in crystal oscillator |
CN104570016A (en) * | 2014-12-30 | 2015-04-29 | 北京航天科工世纪卫星科技有限公司 | Method for capturing, tracking and receiving Beidou signal of high-dynamic movement carrier |
CN106685875A (en) * | 2015-11-11 | 2017-05-17 | 台湾积体电路制造股份有限公司 | Carrier synchronization device |
CN108490416A (en) * | 2018-05-21 | 2018-09-04 | 北京理工大学 | A kind of high dynamic carrier phase tracking method of pseudo-code modulation continuous wave radar echo |
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