Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor
We propose a linearization method for reducing the effect of nonlinear frequency sweep in a frequency-modulated continuous-wave (FMCW) based laser range sensor. In FMCW laser range sensors, nonlinear frequency sweep can severely degrade the measurement accuracy because it gives the system ambiguity...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-06-01
|
| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2013/294967 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832556715759894528 |
|---|---|
| author | Soo-Yong Jung Seong Ro Lee Chang-Soo Park |
| author_facet | Soo-Yong Jung Seong Ro Lee Chang-Soo Park |
| author_sort | Soo-Yong Jung |
| collection | DOAJ |
| description | We propose a linearization method for reducing the effect of nonlinear frequency sweep in a frequency-modulated continuous-wave (FMCW) based laser range sensor. In FMCW laser range sensors, nonlinear frequency sweep can severely degrade the measurement accuracy because it gives the system ambiguity when determining the target range. In general, voltage controlled oscillators (VCO) which are used for frequency modulation show nonlinear frequency sweep property even though the input voltage signal is a linear ramp signal. To solve this problem, we adopt an additional fixed delay structure to extract the nonlinearity and compensate it. The proposed linearization method has been worked out through the numerical process and the simulation, and this method effectively eliminates the nonlinear frequency sweep problem. |
| format | Article |
| id | doaj-art-f0b1eb05e40f4f73847c727ff0301e8a |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2013-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-f0b1eb05e40f4f73847c727ff0301e8a2025-02-03T05:44:35ZengWileyInternational Journal of Distributed Sensor Networks1550-14772013-06-01910.1155/2013/294967Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range SensorSoo-Yong Jung0Seong Ro Lee1Chang-Soo Park2 School of Information and Communications, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea Department of Information and Electronics Engineering, Mokpo National University, Yeongsan-ro, Cheonggye-myeon, Jeollanam-do, Muan-gun 1666, Republic of Korea School of Information and Communications, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of KoreaWe propose a linearization method for reducing the effect of nonlinear frequency sweep in a frequency-modulated continuous-wave (FMCW) based laser range sensor. In FMCW laser range sensors, nonlinear frequency sweep can severely degrade the measurement accuracy because it gives the system ambiguity when determining the target range. In general, voltage controlled oscillators (VCO) which are used for frequency modulation show nonlinear frequency sweep property even though the input voltage signal is a linear ramp signal. To solve this problem, we adopt an additional fixed delay structure to extract the nonlinearity and compensate it. The proposed linearization method has been worked out through the numerical process and the simulation, and this method effectively eliminates the nonlinear frequency sweep problem.https://doi.org/10.1155/2013/294967 |
| spellingShingle | Soo-Yong Jung Seong Ro Lee Chang-Soo Park Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor International Journal of Distributed Sensor Networks |
| title | Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor |
| title_full | Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor |
| title_fullStr | Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor |
| title_full_unstemmed | Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor |
| title_short | Correction of Nonlinear Frequency Sweep in Frequency-Modulated Continuous-Wave Laser Range Sensor |
| title_sort | correction of nonlinear frequency sweep in frequency modulated continuous wave laser range sensor |
| url | https://doi.org/10.1155/2013/294967 |
| work_keys_str_mv | AT sooyongjung correctionofnonlinearfrequencysweepinfrequencymodulatedcontinuouswavelaserrangesensor AT seongrolee correctionofnonlinearfrequencysweepinfrequencymodulatedcontinuouswavelaserrangesensor AT changsoopark correctionofnonlinearfrequencysweepinfrequencymodulatedcontinuouswavelaserrangesensor |