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1. FBG sensor for strain measurement with enhanced sensitivity by using degenerated FWM in highly nonlinear fibre
by Du, Jiangbing and He, Zuyuan
Electronics Letters, ISSN 0013-5194, 10/2013, Volume 49, Issue 22, pp. 1399 - 1399
A method for enhancing the sensitivity of a fibre Bragg grating (FBG) sensor by all-optical signal processing is demonstrated. Degenerated four-wave mixing has... 
Chirp
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2. Analytic signal demodulation of phase-modulated frequency-chirped signals
by Niebauer, TM
Applied Optics, ISSN 1559-128X, 03/2012, Volume 52, Issue 9, pp. 1838 - 1846
Both interferometers and frequency-modulated (FM) radios create sinusoidal signals with phase information that must be recovered. Often these two applications... 
Chirp
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3. Linear closed-form solution for wireless localisation with ultra-wideband/chirp spread spectrum signals based on difference of squared range measurements
by Cho, Seong Yun and Kim, Byung Doo
IET Wireless Sensor Systems, ISSN 2043-6386, 12/2013, Volume 3, Issue 4, pp. 255 - 255
In many practical applications of wireless localisation with ultra-wideband or chirp spread spectrum signals based on distance measurements, iterative least... 
Chirp
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4. Full Text Rapid impedance spectroscopy using dual phase shifted chirp signals for electrochemical applications
by Suresh, Resmi and Swaminathan, Sathish and Rengaswamy, Raghunathan
International Journal of Hydrogen Energy, ISSN 0360-3199, 11/2019
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5. Full Text Design of reliable current recycling linear regulators for biomedical implants
by Yuanyuan Yang and Lehmann, Torsten and Hosung Chun
2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS), ISSN 1548-3746, 08/2011, pp. 1 - 4
A novel linear regulating power supply circuit with our unique current recycling technique for biomedical implants is proposed in this paper. In implantable... 
Chirp
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6. Full Text Experimental demonstration of eight-wavelength distributed feedback semiconductor laser array using equivalent phase shift
by Shi, Yuechun and Chen, Xiangfei and Zhou, Yating and Li, Simin and Lu, Linlin and Liu, Rui and Feng, Yijun
Optics Letters, ISSN 0146-9592, 08/2012, Volume 37, Issue 16, pp. 3315 - 3317
An eight-wavelength distributed feedback semiconductor laser array with lambda/4 equivalent phase shift based on reconstruction-equivalent-chirp technique was... 
TECHNOLOGY | CHIRP | OPTICS
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7. Full Text Infrared-laser-induced ultrafast modulation on the spectrum of an extreme-ultraviolet attosecond pulse
by Xue, Jinxing and Liu, Candong and Zheng, Yinghui and Zeng, Zhinan and Li, Ruxin and Xu, Zhizhan
Optics Express, ISSN 1094-4087, 04/2018, Volume 26, Issue 7, pp. 9243 - 9253
We present a theoretical investigation of the isolated extreme-ultraviolet (XUV) attosecond pulse propagating in the ionizing gas induced by a synchronized... 
PHASE | CHIRP | OPTICS | LIGHT
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8. Full Text Chirp Spread Spectrum Toward the Nyquist Signaling Rate—Orthogonality Condition and Applications
by Xing Ouyang and Dobre, Octavia A and Yong Liang Guan and Jian Zhao
IEEE Signal Processing Letters, ISSN 1070-9908, 10/2017, Volume 24, Issue 10, pp. 1488 - 1492
With the proliferation of Internet-of-Things (IoT), the chirp spread spectrum (CSS) technique is re-emerging for communications. Although CSS can offer high... 
Chirp spread spectrum (CSS) | Fresnel transform | Internet-of-Things (IoT) | Nyquist waveform | orthogonal chirp-division multiplexing (OCDM) | Chirp | Diffraction | Modulation | LoRa | Bandwidth | Cascading style sheets | MODULATION | ENGINEERING, ELECTRICAL & ELECTRONIC
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9. Full Text Chirp-wave expansion of the electron wavefunctions in atoms
by Torres, Edmanuel and Torres, Rafael
Journal of Computational and Applied Mathematics, ISSN 0377-0427, 06/2014, Volume 263, Issue 1, pp. 218 - 224
The description of the electron wavefunctions in atoms is generalized to the fractional Fourier series. This method introduces a continuous and infinite number... 
Local gauge transformation | Chirp series | Chirp expansion of wavefunctions | Chirp basis set | Fractional Fourier transform | MATHEMATICS, APPLIED | FOURIER-TRANSFORM | CRYSTALS | Chirp basis set Chirp series Chirp expansion of wavefunctions Fractional Fourier transform Local gauge transformation
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10. Full Text A 77 GHz 90 nm CMOS Transceiver for FMCW Radar Applications
by Mitomo, T and Ono, N and Hoshino, H and Yoshihara, Y and Watanabe, O and Seto, I
IEEE Journal of Solid-State Circuits, ISSN 0018-9200, 04/2010, Volume 45, Issue 4, pp. 928 - 937
The first 77 GHz frequency modulated continuous wave (FMCW) radar transceiver IC with an accurate FMCW chirp signal generator using a 90 nm CMOS process is... 
Frequency synthesizers | Frequency modulation | transceiver | Transceivers | Radar applications | millimeter wave circuits | Distributed amplifiers | Semiconductor device measurement | Chirp modulation | 77 GHz circuits | Power amplifiers | Signal generators | Chirp radar | Radar signal processing | CMOS integrated circuits | FMCW | Millimeter wave circuits | Transceiver | SYNTHESIZER | ENGINEERING, ELECTRICAL & ELECTRONIC | Integrated circuits | CMOS | Chirp | Synthesizers | Radar | Nonlinearity | Generators
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11. Full Text Silicon-organic hybrid (SOH) modulators for intensity-modulation / direct-detection links with line rates of up to 120 Gbit/s
by Zwickel, Heiner and Wolf, Stefan and Kieninger, Clemens and Ku-Tuvantavida, Yasar and Lauermann, Matthias and De Keulenaer, Timothy and Vyncke, Arno and Vaernewyck, Renato and Luo, Jingdong and Jen, Alex K.-Y and Freude, Wolfgang and Bauwelinck, Johan and Randel, Sebastian and Koos, Christian
Optics Express, ISSN 1094-4087, 10/2017, Volume 25, Issue 20, pp. 23784 - 23800
High-speed interconnects in data-center and campus-area networks crucially rely on efficient and technically simple transmission techniques that use intensity... 
CHIRP | OPTICS | MACH-ZEHNDER MODULATOR | 100 GB/S
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12. Full Text Orthogonal Chirp Division Multiplexing
by Xing Ouyang and Jian Zhao
IEEE Transactions on Communications, ISSN 0090-6778, 09/2016, Volume 64, Issue 9, pp. 3946 - 3957
Chirp waveform plays a significant role in radar and communication systems for its ability of pulse compression and spread spectrum. This paper presents a... 
orthogonal chirp division multiplexing | Code division multiplexing | Frequency modulation | Fresnel transform | Chirp | Convolution | OFDM | Transforms | discrete Fresnel transform | chirp spread spectrum | SYSTEM | CPC SIGNALS | FREQUENCY-DOMAIN EQUALIZATION | DESIGN | BINARY DATA COMMUNICATION | TELECOMMUNICATIONS | LOW-POWER | WIRELESS COMMUNICATION | ENGINEERING, ELECTRICAL & ELECTRONIC | GRATINGS | CMOS | DIFFRACTION | Multiplexing | Digital multiplexing | Research | Multichannel communication | Fourier transforms | Spread spectrum
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13. Full Text Reduced sound-evoked and resting-state BOLD fMRI connectivity in tinnitus
by Hofmeier, Benedikt and Wolpert, Stephan and Aldamer, Ebrahim Saad and Walter, Moritz and Thiericke, John and Braun, Christoph and Zelle, Dennis and Rüttiger, Lukas and Klose, Uwe and Knipper, Marlies
NeuroImage: Clinical, ISSN 2213-1582, 01/2018, Volume 20, pp. 637 - 649
The exact neurophysiological basis of chronic tinnitus, which affects 10-15% of the population, remains unknown and is controversial at many levels. It is an... 
r-fcMRI | fMRI | Cortisol | Tinnitus | ABR wave | AUDITORY-NERVE | FUNCTIONAL CONNECTIVITY | MECHANISMS | DORSAL COCHLEAR NUCLEUS | NEUROIMAGING | PERCEPTION | DEFAULT-MODE | NEURAL ACTIVITY | HIDDEN HEARING-LOSS | BRAIN | CENTRAL NOISE | Auditory Cortex - diagnostic imaging | Nerve Net - diagnostic imaging | Humans | Prefrontal Cortex - physiopathology | Magnetic Resonance Imaging - methods | Male | Tinnitus - diagnostic imaging | Acoustic Stimulation - methods | Rest - physiology | Auditory Cortex - physiopathology | Evoked Potentials, Auditory - physiology | Female | Nerve Net - physiopathology | Prefrontal Cortex - diagnostic imaging | Tinnitus - physiopathology
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14. Full Text ISAR Imaging of Targets With Complex Motion Based on the Chirp Rate-Quadratic Chirp Rate Distribution
by Zheng, Jibin and Su, Tao and Zhang, Long and Zhu, Wentao and Liu, Qing Huo
IEEE Transactions on Geoscience and Remote Sensing, ISSN 0196-2892, 11/2014, Volume 52, Issue 11, pp. 7276 - 7289
In inverse synthetic aperture radar (ISAR) imaging of targets with complex motion such as fluctuating ships with oceanic waves and high maneuvering airplanes,... 
Couplings | Chirp rate (CR) and quadratic chirp rate (QCR) distribution (CRQCRD) | Chirp | nonuniform fast Fourier transform (NUFFT) | Imaging | Transforms | Radar imaging | inverse synthetic aperture radar (ISAR) | Vectors | Doppler effect | cubic phase signal (CPS) | generalized keystone transform (GKT) | FM SIGNAL | PARAMETER-ESTIMATION | RADAR | RANGE-INSTANTANEOUS-DOPPLER | ALGORITHM | IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY | ENGINEERING, ELECTRICAL & ELECTRONIC | GEOCHEMISTRY & GEOPHYSICS | FREQUENCY RATE | REMOTE SENSING | FOURIER-TRANSFORM | POLYNOMIAL-PHASE | HOUGH TRANSFORM | Signal processing | Fourier transformations | Usage | Image processing | Quadratic functions | Innovations | Fourier transforms | Azimuth | Algorithms | Nonuniform | Searching | Compensation
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15. Full Text Focus Improvement of High-Squint SAR Based on Azimuth Dependence of Quadratic Range Cell Migration Correction
by Zhang, Shuang-Xi and Xing, Meng-Dao and Xia, Xiang-Gen and Zhang, Lei and Guo, Rui and Bao, Zheng
IEEE Geoscience and Remote Sensing Letters, ISSN 1545-598X, 01/2013, Volume 10, Issue 1, pp. 150 - 154
In this letter, we discuss the problem that linear range cell walk correction in the azimuth time domain may cause space variation along the azimuth not only... 
Chirp | nonlinear chirp scaling (NCS) | Remote sensing | Frequency domain analysis | Azimuth | High-squint mode | range cell migration correction (RCMC) | synthetic aperture radar (SAR) | Green products | Signal processing algorithms | Imaging | linear chirp scaling (LCS) | QRCM correction (QRCMC) | quadratic range cell migration (QRCM) | Nonlinear chirp scaling (NCS) | Quadratic range cell migration (QRCM) | Range cell migration correction (RCMC) | Synthetic aperture radar (SAR) | Linear chirp scaling (LCS) | ALGORITHM | MODE SAR | INTEGRATED MOTION COMPENSATION | ENGINEERING, ELECTRICAL & ELECTRONIC | GEOCHEMISTRY & GEOPHYSICS | REMOTE SENSING | CHIRP SCALING APPROACH
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16. Full Text Chirp Rate and Instantaneous Frequency Estimation: Application to Recursive Vertical Synchrosqueezing
by Fourer, Dominique and Auger, Francois and Czarnecki, Krzysztof and Meignen, Sylvain and Flandrin, Patrick
IEEE Signal Processing Letters, ISSN 1070-9908, 11/2017, Volume 24, Issue 11, pp. 1724 - 1728
This letter introduces new chirp rate and instantaneous frequency estimators designed for frequency-modulated signals. These estimators are first investigated... 
Time-frequency analysis | Analytical models | reassignment | Frequency modulation | time-frequency (TF) analysis | Chirp | Estimation | synchrosqueezing | Frequency estimation | Chirp rate (CR) and instantaneous frequency (IF) estimation | Signal and Image Processing | Computer Science
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17. Full Text Robust Channel Estimation for Coherent Optical Orthogonal Chirp-Division Multiplexing With Pulse Compression and Noise Rejection
by Xing Ouyang and Antony, Cleitus and Talli, Giuseppe and Townsend, Paul D
Journal of Lightwave Technology, ISSN 0733-8724, 12/2018, Volume 36, Issue 23, pp. 5600 - 5610
Orthogonal chirp-division multiplexing (OCDM) was recently proposed as a promising modulation technique for high-speed fiber-optic communications due to its... 
pulse compression | Code division multiplexing | Fresnel transform | orthogonal chirp-division multiplexing (OCDM) | Chirp | Frequency-domain analysis | Discrete Fourier transforms | Channel estimation | Receivers | Optical coherent detection | intra-symbol frequency-domain average (ISFA) | orthogonal frequency-division multiplexing (OFDM) | chirp | TELECOMMUNICATIONS | CO-OFDM | ENGINEERING, ELECTRICAL & ELECTRONIC | FIBER | TRANSMISSION | PHASE | SYSTEMS | OPTICS | ACCESS | Multiplexing | Optical fibers | Noise | Waveforms | Equalizers (circuits) | Pulse compression | Fiber optics | Rejection | Algorithms | Equalizers | Robustness (mathematics) | Division
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18. Full Text ISAR Imaging of Targets With Complex Motion Based on Discrete Chirp Fourier Transform for Cubic Chirps
by Liang Wu and Xizhang Wei and Degui Yang and Hongqiang Wang and Xiang Li
IEEE Transactions on Geoscience and Remote Sensing, ISSN 0196-2892, 10/2012, Volume 50, Issue 10, pp. 4201 - 4212
In inverse synthetic aperture radar (ISAR) imaging of targets with complex motion such as the high maneuvering airplanes and fluctuating ships with oceanic... 
Fourier transforms | Chirp | Azimuth | inverse synthetic aperture radar (ISAR) imaging | discrete chirp Fourier transform (DCFT) | Imaging | Radar imaging | Vectors | Cubic chirps | targets with complex motion | GEOCHEMISTRY & GEOPHYSICS | REMOTE SENSING | RADAR | MOVING TARGETS | COMPENSATION | MANEUVERING TARGETS | ENGINEERING, ELECTRICAL & ELECTRONIC | Measurement | Usage | Innovations | Imaging systems | Fourier transformations | Quadratic programming | Synthetic aperture radar | Simulation methods | Pixels
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19. Full Text Photonic Generation of Dual-Chirp Waveforms With Improved Time-Bandwidth Product
by Yuxiao Xu and Tao Jin and Hao Chi and Shilie Zheng and Xiaofeng Jin and Xianmin Zhang
IEEE Photonics Technology Letters, ISSN 1041-1135, 08/2017, Volume 29, Issue 15, pp. 1253 - 1256
We present a photonic method for the generation of dual-chirp signals. In this approach, a single-tone RF signal is first modulated using a modulator in order... 
Optical filters | Time-frequency analysis | analog optical signal processing | Chirp | Dual chirp | Modulation | Bandwidth | Radar | microwave photonics | radar signal generation | Photonics | PHYSICS, APPLIED | MICROWAVE | SIGNALS | OPTICS | ENGINEERING, ELECTRICAL & ELECTRONIC | Carriers | Error analysis | Bandwidths | Waveforms | Signal processing | Chirp signals | Doppler effect
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20. Full Text The Performance of Chirp Signal Used in LEO Satellite Internet of Things
by Qian, Yubi and Ma, Lu and Liang, Xuwen
IEEE Communications Letters, ISSN 1089-7798, 08/2019, Volume 23, Issue 8, pp. 1319 - 1322
The technology of chirp spread spectrum (CSS) has been around for decades, widely used in the fields of radar and sonar. In recent years, CSS has been used in... 
Chirp spread spectrum (CSS) | Satellites | Chirp | internet of things (IoT) | Low earth orbit satellites | Spread spectrum communication | asymmetry chirp signal (ACS) | low-Earth-orbit (LEO) satellite | Internet of Things | Satellite communication | Cascading style sheets | TELECOMMUNICATIONS | MODULATION
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