Log in

Relevant bibliographies by topics / Chirp Signa

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Chirp Signa'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Chirp Signa.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Chirp Signa"

1

Mary, Deepthi Joseph, and Sheela Gnana. "PARAMETER ESTIMATION OF CHIRP SIGNAL USING STFT." International Journal of Advances in Engineering & Technology 10, no. 1 (2017): 122–30. https://doi.org/10.5281/zenodo.3958646.

Full text

Abstract:

<em>This paper suggested a technique called short time Fourier transform (STFT) for the parameter estimation of chirp signal in intercept SONAR. STFT is one of the time-frequency method and it is a valuable tool for estimating the parameters like start frequency, end frequency, band width, pulse width and chirp rate of chirp signal. Thus for doing parameter estimation, consider two scenarios: pure chirp signal and chirp signal embedded in noise. Generally the parameter estimation in intercept sonar requires a minimal frequency resolution of 250Hz, but achieved a frequency resolution of 50Hz by using STFT technique which is much higher than the required frequency resolution. Also the maximum tolerable error limit in pulse width estimation is </em>±<em> 40ms. The simulation results show that in both scenarios, we achieved a lesser error value in pulse width estimation .STFT technique is found to be an efficient tool for the parameter estimation of noisy chirp signal with SNR varies from 0dB to -10dB.</em>

APA, Harvard, Vancouver, ISO, and other styles

2

Lee. "Underwater Acoustic Communication Using Nonlinear Chirp Signal." Journal Of The Acoustical Society Of Korea 33, no. 4 (2014): 255. http://dx.doi.org/10.7776/ask.2014.33.4.255.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Poulet, J. F., and B. Hedwig. "Tympanic membrane oscillations and auditory receptor activity in the stridulating cricket Gryllus bimaculatus." Journal of Experimental Biology 204, no. 7 (2001): 1281–93. http://dx.doi.org/10.1242/jeb.204.7.1281.

Full text

Abstract:

The ears of stridulating crickets are exposed to loud self-generated sounds that might desensitise the auditory system and reduce its responsiveness to environmental sounds. We examined whether crickets prevent self-induced auditory desensitisation, and measured the responsiveness of the peripheral auditory system of the cricket (acoustic spiracle, tympanic membrane and tympanic nerve) during pharmacologically induced sonorous (two-winged) and silent (one-winged) stridulation. The acoustic spiracles remained open during stridulation, so the self-generated auditory signal had full access to both the external side and the internal side of the tympanic membrane. When the spiracles shut in resting crickets, the responsiveness of the tympanic membrane to acoustic stimuli varied according to the phase of ventilation and was minimal during expiration. The tympanic membrane oscillated in phase with the self-generated sounds during sonorous chirps and did not oscillate during silent chirps. In both sonorously and silently singing crickets, the responses of the tympanic membrane to acoustic stimuli were identical during the chirps and the chirp intervals. Bursts of activity were recorded in the tympanic nerve during sonorous chirps; however, activity was minor during silent chirps. In sonorously and in silently singing crickets, the summed nerve response to acoustic stimuli in the chirp intervals was the same as in resting crickets. The response to stimuli presented during the syllable intervals of sonorous chirps was slightly reduced compared with the response in the chirp intervals as a consequence of receptor habituation. In silently singing crickets, acoustic stimuli elicited the same summed nerve response during chirps and chirp intervals. These data indicate that in the cricket no specific mechanism acts to reduce the responsiveness of the peripheral auditory pathway during stridulation.

APA, Harvard, Vancouver, ISO, and other styles

4

Burrows, A. P., J. R. Wright, and J. A. Coote. "Optimal Excitation for Aircraft Flutter Testing." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 209, no. 4 (1995): 313–25. http://dx.doi.org/10.1243/pime_proc_1995_209_306_02.

Full text

Abstract:

The choice of excitation signal for flutter testing of a full-scale aircraft or wind tunnel model is crucial if the flutter test clearance is to be performed quickly and with confidence. The use of chirps (that is, sinusoidal signals with varying frequency) is commonplace but has limitations. In this paper the idea of a simple chirp is extended to the development of a multi-sectional variable amplitude/variable power chirp in which the relative signal amplitude and power between sections may be specified over the frequency range of interest. An optimal chirp for a particular application may thus be designed. Sample results from a wind tunnel model flutter test are presented. In addition, the practice of sweeping up and then down in frequency is shown to be inadvisable under certain circumstances.

APA, Harvard, Vancouver, ISO, and other styles

5

Walz, Henriette, Jan Grewe, and Jan Benda. "Static frequency tuning accounts for changes in neural synchrony evoked by transient communication signals." Journal of Neurophysiology 112, no. 4 (2014): 752–65. http://dx.doi.org/10.1152/jn.00576.2013.

Full text

Abstract:

Although communication signals often vary continuously on the underlying signal parameter, they are perceived as distinct categories. We here report the opposite case where an electrocommunication signal is encoded in four distinct regimes, although the behavior described to date does not show distinct categories. In particular, we studied the encoding of chirps by P-unit afferents in the weakly electric fish Apteronotus leptorhynchus. These fish generate an electric organ discharge that oscillates at a certain individual-specific frequency. The interaction of two fish in communication contexts leads to the emergence of a beating amplitude modulation (AM) at the frequency difference between the two individual signals. This frequency difference represents the social context of the encounter. Chirps are transient increases of the fish's frequency leading to transient changes in the frequency of the AM. We stimulated the cells with the same chirp on different, naturally occurring backgrounds beats. The P-units responded either by synchronization or desynchronization depending on the background. Although the duration of a chirp is often shorter than a full cycle of the AM it elicits, the distinct responses of the P-units to the chirp can be predicted solely from the frequency of the AM based on the static frequency tuning of the cells.

APA, Harvard, Vancouver, ISO, and other styles

6

Mulsow, Jason, James J. Finneran, Madelyn G. Strahan, Dorian S. Houser, and Robert F. Burkard. "Input compensation of dolphin and sea lion auditory brainstem responses using frequency-modulated up-chirps." Journal of the Acoustical Society of America 154, no. 2 (2023): 739–50. http://dx.doi.org/10.1121/10.0020566.

Full text

Abstract:

Frequency-modulated “chirp” stimuli that offset cochlear dispersion (i.e., input compensation) have shown promise for increasing auditory brainstem response (ABR) amplitudes relative to traditional sound stimuli. To enhance ABR methods with marine mammal species known or suspected to have low ABR signal-to-noise ratios, the present study examined the effects of broadband chirp sweep rate and level on ABR amplitude in bottlenose dolphins and California sea lions. “Optimal” chirps were designed based on previous estimates of cochlear traveling wave speeds (using high-pass subtractive masking methods) in these species. Optimal chirps increased ABR peak amplitudes by compensating for cochlear dispersion; however, chirps with similar (or higher) frequency-modulation rates produced comparable results. The optimal chirps generally increased ABR amplitudes relative to noisebursts as threshold was approached, although this was more obvious when sound pressure level was used to equate stimulus levels (as opposed to total energy). Chirps provided progressively less ABR amplitude gain (relative to noisebursts) as stimulus level increased and produced smaller ABRs at the highest levels tested in dolphins. Although it was previously hypothesized that chirps would provide larger gains in sea lions than dolphins—due to the lower traveling wave speed in the former—no such pattern was observed.

APA, Harvard, Vancouver, ISO, and other styles

7

Cheong, Kah-Meng, Yih-Liang Shen, and Tai-Shih Chi. "Active acoustic scene monitoring through spectro-temporal modulation filtering for intruder detection." Journal of the Acoustical Society of America 151, no. 4 (2022): 2444–52. http://dx.doi.org/10.1121/10.0010070.

Full text

Abstract:

An indoor acoustic scene monitoring system using a periodic impulse signal was previously developed. Compared with the impulse signal, the chirp signal is more robust against environmental noise due to its specific spectro-temporal structure. Such specific structure makes the chirp sound easily detected using a spectro-temporal modulation filtering mechanism. In this paper, we demonstrated a system that employs a two-dimensional spectro-temporal filtering mechanism on a Fourier spectrogram to measure the total energy of the reverberations of the chirp signal as the representation of the acoustic scene. The system compares the reverberation energy difference between consecutive chirps with a predefined threshold to automatically detect the change in the acoustic scene. Simulations were conducted in real living rooms with various types of background noise. Test results demonstrated that the proposed system is much more effective than previously developed systems for detecting the acoustic scene changes due to the intruder silently walking in the rooms. In the biggest test room (18 × 9.8 × 2.5 m3) with heavy background noise, the proposed system can still yield a correct identification rate higher than 80% to the intruder walking at 7 m from the microphone without producing any false alarms.

APA, Harvard, Vancouver, ISO, and other styles

8

Kim, Bae-Hyung, Seungheun Lee, and Kang-Sik Kim. "Orthogonal Chirp Coded Excitation in a Capacitive Micro-machined Ultrasonic Transducer Array for Ultrasound Imaging: A Feasibility Study." Sensors 19, no. 4 (2019): 883. http://dx.doi.org/10.3390/s19040883.

Full text

Abstract:

It has been reported that the frequency bandwidth of capacitive micro-machined ultrasonic transducers (CMUTs) is relatively broader than that of other ceramic-based conventional ultrasonic transducers. In this paper, a feasibility study for orthogonal chirp coded excitation to efficiently make use of the wide bandwidth characteristic of CMUT array is presented. The experimental result shows that the two orthogonal chirps mixed and simultaneously fired in CMUT array can be perfectly separated in decoding process of the received echo signal without sacrificing the frequency bandwidth each chirp. The experimental study also shows that frequency band-divided orthogonal chirps are successfully compressed to two short pulses having the −6 dB axial beam-width of 0.26- and 0.31-micro second for high frequency and low frequency chirp, respectively. B-mode image simulations are performed using Field II to estimate the improvement of image quality assuming that the orthogonal chirps designed for the experiments are used for simultaneous transmission multiple-zone focusing (STMF) technique. The simulation results show that the STMF technique used in CMUT array can improve the lateral resolution up to 77.1% and the contrast resolution up to 74.7%, respectively. It is shown that the penetration depth also increases by more than 3 cm.

APA, Harvard, Vancouver, ISO, and other styles

9

Tan, See Ling, Yu-Fu Chen, Chieh-Yu Liu, Kuo-Chung Chu, and Pei-Chun Li. "Shortened neural conduction time in young adults with tinnitus as revealed by chirp-evoked auditory brainstem response." Journal of the Acoustical Society of America 153, no. 4 (2023): 2178–89. http://dx.doi.org/10.1121/10.0017789.

Full text

Abstract:

Tinnitus is generally considered to be caused by neuroplastic changes in the central nervous system, triggered by a loss of input from the damaged peripheral system; however, conflicting results on auditory brainstem responses (ABRs) to clicks have been reported previously in humans with tinnitus. This study aimed to compare the effect of tinnitus on ABRs to chirps with those to clicks in normal-hearing young adults with tinnitus. The results showed that the tinnitus group had no significantly poorer hearing thresholds (0.25–16 kHz), click-evoked otoacoustic emissions (1–16 kHz), and speech perception in noise (SPIN) than the control group. Although chirps evoked significantly larger wave I and V amplitudes than clicks, people with tinnitus had no significantly smaller wave I amplitudes for either stimulus. Nevertheless, adults with tinnitus exhibited significantly smaller interpeak interval (IPI) between waves I and V for chirps (IPI–chirp) but not for clicks. In addition, the IPI–chirp correlated significantly with the SPIN for individuals with tinnitus when the signal-to-noise ratio was low. The present results suggest that the chirp-evoked ABR may be a valuable clinical tool for objectively assessing the SPIN in individuals with tinnitus. Further studies should be conducted to investigate possible etiologies of tinnitus.

APA, Harvard, Vancouver, ISO, and other styles

10

Jalil, Muhammad Arif Bin. "The Study on the Nonlinear Effects of Soliton in Optical Fibre." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 150–55. http://dx.doi.org/10.22214/ijraset.2024.63871.

Full text

Abstract:

Abstract: In optical fibres, the chirps generated by GVD and SPM, which both limit the system's performance when operating independently, balance each other out to produce soliton formation. To comprehend how such a balance is possible, we shall study the nonlinear optical effects and the dispersion-induced pulse broadening. If an optical pulse is not adequately chirped before it propagates inside an optical fibre, the GVD broadens the pulse. More specifically, an early stage of transmission compresses a chirped pulse whenever β2 and the chirp parameter C have opposite signs and β2C is negative. The optical pulse chirps due to SPM, ensuring that C > 0. If β2 < 0, it is easy to meet the criteria β2C < 0. Moreover, because the SPM-induced chirp depends on power, it is possible that in some situations, SPM and GVD could cooperate to the extent that the SPM-induced chirp is precisely the right amount to cancel out the pulse broadening caused by GVD. Here, an optical pulse propagates distortion-free as a soliton [27].

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Chirp Signa"

1

Whittaker, Philip. "On board signal analysis using novel analogue/digital signal processing techniques on low earth orbit mini/microsatellites." Thesis, University of Surrey, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343484.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Fabris, Eric Ericson. "A Modular and digitally programmable interface based on band-pass sigma-delta modulator for mixed-signal systems-on-chip." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/6226.

Full text

Abstract:

O foco desta tese é a descrição e validação de uma arquitetura de interface para processamento de sinais analógicos para SOC de sinais mistos. A abordagem proposta apresenta a possibilidade de cobertura de uma larga faixa de freqüências com performance praticamente constante associada a uma estrutura digital de programação. A premissa é usar uma célula analógica fixa e promover a configuração da aplicação no domínio digital, levando a uma arquitetura de interface de sinais mistos. O emprego de um bloco analógico fixo busca eliminar a perda inerente de performance decorrente da própria estrutura de programação em circuitos reconfiguráveis analógicos. A emprego da programação no domínio digital abre espaço para usos da vasta gama de ferramentas disponíveis para o projeto em alto nível de abstração, simulação e síntese automática para implementar a aplicação alvo com excelente predição do desempenho final. A abordagem proposta baseia-se no conceito de translação em freqüência (mixagem) do sinal de entrada seguida pela sua conversão para o domínio ΣΔ. A estrutura de processamento possibilita o emprego de um bloco analógico constante, e também, um processamento uniforme de sinais de entrada indo de DC até altas freqüências. A aplicação é configurada no domínio ΣΔ onde a performance pode ser predita de acordo com as especificações alvo. Objetivando a exploração do espaço de projeto foi desenvolvido o modelo de performance teórico e de simulação. Os modelos desenvolvidos auxiliam no também no projeto físico da interface proposta. Objetivando, tanto a validação dos modelos propostos, bem como o desenvolvimento de aplicações, foram construídos dois protótipos. São apresentados os usos da interface como um ADC paramétrico multi-banda e como um multiplicador e um somador de sinais analógicos. É proposta também uma arquitetura para uma interface analógica multi-canal. Os resultados experimentais empregados para a caracterização da interface proposta suportam as vantagens da mesma.<br>The focus of this thesis is to discuss the development and modeling of an interface architecture to be employed for interfacing analog signals in mixed-signal SOC. We claim that the approach that is going to be presented is able to achieve wide frequency range, and covers a large range of applications with constant performance, allied to digital configuration compatibility. Our primary assumptions are to use a fixed analog block and to promote application configurability in the digital domain, which leads to a mixed-signal interface. The use of a fixed analog block avoids the performance loss common to configurable analog blocks. The usage of configurability on the digital domain makes possible the use of all existing tools for high level design, simulation and synthesis to implement the target application, with very good performance prediction. The proposed approach utilizes the concept of frequency translation (mixing) of the input signal followed by its conversion to the ΣΔ domain, which makes possible the use of a fairly constant analog block, and also, a uniform treatment of input signal from DC to high frequencies. The programmability is performed in the ΣΔ digital domain where performance can be closely achieved according to application specification. The interface performance theoretical and simulation model are developed for design space exploration and for physical design support. Two prototypes are built and characterized to validate the proposed model and to implement some application examples. The usage of this interface as a multi-band parametric ADC and as a two channels analog multiplier and adder are shown. The multi-channel analog interface architecture is also presented. The characterization measurements support the main advantages of the approach proposed.

APA, Harvard, Vancouver, ISO, and other styles

3

Rahman, M. S. "An investigation into spectral analysis using a chirp signal matched filter." Thesis, University of Manchester, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312219.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kashyap, Aditya. "Computationally Efficient Methods for Detection and Localization of a Chirp Signal." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/87586.

Full text

Abstract:

In this thesis, a computationally efficient method for detecting a whistle and capturing it using a 4 microphone array is proposed. Furthermore, methods are developed to efficiently process the data captured from all the microphones to estimate the direction of the sound source. The accuracy, the shortcoming and the constraints of the method proposed are also discussed. There is an emphasis placed on being computationally efficient so that the methods may be implemented on a low cost microcontroller and be used to provide a heading to an Unmanned Ground Vehicle.<br>MS<br>As humans, we rely on our sense of hearing to help us interact with the outside world. It helps us to listen not just to other people but also for sounds that maybe a warning for us. It can often be the first warning we get of an impending danger as we might hear a predator before we see it or we might hear a car brake and slip before we turn to look at it. However, it is not merely the ability to hear a sound that makes hearing so useful. It is the fact that we can tell which direction the sound is coming from that makes it so important. That is what allows us to know which direction to turn towards to respond to someone or from which direction the sound warning us of danger is coming. We may not be able to pinpoint the location of the source with complete accuracy but we can discern the general heading. It was this idea that inspired this research work. We wanted to be capable of estimating where a sound is coming from while being computationally efficient so that it may be implemented in real time with the help of a low cost microcontroller. This would then be used to provide a heading to an Unmanned Ground Vehicle while keeping the costs down.

APA, Harvard, Vancouver, ISO, and other styles

5

Shi, Rui. "Off-chip wire distribution and signal analysis." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3336647.

Full text

Abstract:

Thesis (Ph. D.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed Jan. 6, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 91-93).

APA, Harvard, Vancouver, ISO, and other styles

6

Hollis, Timothy M. "Circuit and modeling solutions for high-speed chip-to-chip communication /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1721.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Zoh, Brice. "An Underwater Channel Model and Chirp Slope Keying Modulation Scheme Performance." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1263.

Full text

Abstract:

Chirp-Slope Keying (CSK) is a new and innovative digital modulation scheme for underwater data transmission. The underwater environment brings up several challenges to the manufacturing and operation of communication systems. This thesis shows through analysis and simulations the effectiveness of Chirp-Slope Keying (CSK) in providing a satisfying performance in underwater communication. The experiment consists of modulating a chirp slope by binary numbers (representing our data). '0' is represented by a linear- down chirp and '1' is represented by a linear-up chirp. The received data is first processed by a correlator receiver. Then, the detection of either binary symbol is obtained by the comparison to a threshold. Simulation results for numerous signal-to-noise ratios show that CSK provides satisfying performance for underwater data transmission. The Mississippi gulf coast shallow water Data collected from the National Oceanic and Atmospheric Administration (NOAA), (see appendix), allow us to accurately generate a laboratory model for the channel of interest.

APA, Harvard, Vancouver, ISO, and other styles

8

Xia, Tian. "On-chip timing measurement /." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3112132.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

El, Sayed Atika. "Echographie ultrasonore à émission de type "Chirp" et traitement par analyse spectrale numérique." Lyon 1, 1987. http://www.theses.fr/1987LYO19018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Karasu, Mücahit. "AR parameter estimation using TMS320C30 digital signal processor chip /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA305733.

Full text

Abstract:

Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, December 1995.<br>Thesis advisor(s): M.K. Shields, Murali Tummala. "December 1995." Includes bibliographical references. Also available online.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Chirp Signa"

1

Frangou, Andreas. Fast spectral analysis using a chirp signal matches filter. UMIST, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Hess, Elizabeth. Nim chimpsky: The chimp who would be human. Thorndike Press, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hess, Elizabeth. Nim Chimpsky: The chimp who would be human. Bantam Books, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Hess, Elizabeth. Nim Chimpsky: The chimp who would be human. Bantam Books, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fakhfakh, Mourad. Analog/RF and Mixed-Signal Circuit Systematic Design. Springer Berlin Heidelberg, 2013.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

(Firm), Knovel, and Institution of Engineering and Technology, eds. Test and diagnosis of analogue, mixed-signal and RF integrated circuits: The system on chip approach. Institution of Engineering and Technology, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Sindile, Pia. Probing the dynamic behaviour of ridge waveguide multi-quantum well distributed feedback lasers: Fundamental picosecond studies of chirp-under large-signal modulation. National Library of Canada, 2001.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Adaptive Techniques for Mixed Signal System on Chip. Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-32155-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Fayed, Ayman, and Mohammed Ismail. Adaptive Techniques for Mixed Signal System on Chip. Springer, 2010.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Adaptive techniques for mixed signal system on chip. Springer, 2007.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Chirp Signa"

1

Nandi, Swagata, and Debasis Kundu. "Chirp Signal Model." In Statistical Signal Processing. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6280-8_9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Long, Teng, Yang Li, Weifeng Zhang, et al. "Chirp Signal Processing." In Wideband Radar. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-7561-5_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Nandi, Swagata, and Debasis Kundu. "Random Amplitude Sinusoidal and Chirp Model." In Statistical Signal Processing. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6280-8_10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Weik, Martin H. "signal processor chip." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17394.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Weik, Martin H. "digital signal processor chip." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_5058.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Carro, Luigi, and Mateus Beck Rutzig. "Multicore Systems on Chip." In Handbook of Signal Processing Systems. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6859-2_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Anuraj, K., and S. S. Poorna. "Performance Analysis of Optimization Algorithms Using Chirp Signal." In Inventive Computation Technologies. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33846-6_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Carro, Luigi, and Mateus Beck Rutzig. "Multi-core Systems on Chip." In Handbook of Signal Processing Systems. Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-6345-1_18.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Itoh, Kiyoo. "High Signal-to-Noise Ratio DRAM Design and Technology." In VLSI Memory Chip Design. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04478-0_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Peterson, Gregory D. "A Comparison of Mixed-Signal Modeling Approaches." In System on Chip Design Languages. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-6674-5_7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Chirp Signa"

1

Dong, Wen-Xiu, Hong-Tao Wei, Ming-Feng Lu, et al. "Measuring the spherical curvature radius based on optical fractional Fourier transform." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.af1d.3.

Full text

Abstract:

The optical measurement of the spherical curvature radius can be converted to the detection of the chirpiness of a chirp signal, thus can be realized by the optical fractional Fourier transform with chirp-basis.

APA, Harvard, Vancouver, ISO, and other styles

2

Zhang, Jiawei, Jianwei Wu, Shuangying Xiao, Zihan Zhou, and Huaping Xu. "Analysis of Information Acquisition Ability for Chirp Signal." In IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2024. http://dx.doi.org/10.1109/igarss53475.2024.10642318.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Šabić, Josip, Toni Perković, and Petar Šolić. "Chirp Detection and Signal Transmission: a HackRF Reactive Attack." In 2024 International Conference on Smart Systems and Technologies (SST). IEEE, 2024. http://dx.doi.org/10.1109/sst61991.2024.10755300.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Emelchenkov, Anton, Mathieu Fontaine, Yves Grenier, Hervé Mahé, and François Roueff. "Multifrequency Highly Oscillating Aperiodic Amplitude Estimation for Nonlinear Chirp Signal." In 2024 32nd European Signal Processing Conference (EUSIPCO). IEEE, 2024. http://dx.doi.org/10.23919/eusipco63174.2024.10715060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Guo, Ziwei, Yanfei Su, and Kaidi Liu. "Research and implementation of Chirp signal detection based on FRFT." In 2024 3rd International Conference on Electronics and Information Technology (EIT). IEEE, 2024. https://doi.org/10.1109/eit63098.2024.10762267.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Sun, Zuwen, and Natalie Baddour. "The Effect of Pulse Compression Chirp Parameters on Profilometry Information and Resolution." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85613.

Full text

Abstract:

Recent developments in imaging systems have seen the implementation of a radar matched-filtering approach. The goal of the imaging system is to obtain information about an unknown object embedded in the system, by controlling the parameters of the input and measuring the response to the known input. The main merit of using matched filtering in imaging systems is the improvement of Signal to Noise Ratio (SNR). However, the correlation process used in matched filtering may result in a loss of resolution. One way to compensate for lost resolution is via pulse compression. Linear frequency modulated sinusoidal waveforms (chirps) have the property of pulse compression after correlation. Hence, both SNR and resolution can be enhanced by matched-filtering and pulse compression with a chirp. However, the theory behind the effect of chirp parameters on resolution is still not clear. In this paper, a one-dimensional theory of matched-filter imaging with a pulse compressed linear frequency modulated sinusoidal chirp is developed. The effect of the chirp parameters on the corresponding signal is investigated, and guidelines for choosing the chirp parameters for resolution considerations are given based on the developed theory and simulations. The results showed that by manipulating the center frequency, bandwidth, and duration of the chirp, the resolution can be easily enhanced.

APA, Harvard, Vancouver, ISO, and other styles

7

Kim, Dalwoo, and Gangyao Xiao. "Peculiarities of Chirped Short Pulse Scattering and Pulse Distortion." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.ctuk7.

Full text

Abstract:

This paper is dedicated to study chirped pulse scattering by spherical water drops. Generalized Lorentz-Mie formulae1 are used to calculate the efficiencies of extinction and backscattering when a chirped pulse is scattered by spherical particles. Gaussian pulses of different linear chirps(b) with a constant pulse filling coefficient(l0=1.98) have been studied. The calculation illustrated that chirped pulse scattering shows much different peculiarities from carrier wave scattering(Fig.1). The slowly-varying background of the extinction and backscattering curves is damped by the chirp, and when the pulse is deeply chirped, the maxima and minima of the background curves reduce to disappear and the efficiency curves illustrate a step-like dependence on the sphere size. Using the Fourier theorem, we also studied the temporal dependence of the scattered intensity and the pulse distortion(Fig.2). The pulse chirp affects the scattered pattern definitely for moderate and large particle size. Multi-secondary pulses are generated because of the pulse chirp and even sub-secondary pulses will occur if the incident pulse is deeply chirped. The pulsewidths of the scattered secondary and sub-secondary pulses are shorter than that of the incident pulse. The scattered intensity and pulse wave form are dependent on the sign of the pulse chirp but the efficiencies of extinction and backscattering seems blindness which depend only on the amount of the chirp regardless of up-chirp or down-chirp.

APA, Harvard, Vancouver, ISO, and other styles

8

"MULTI-CHIRP SIGNAL SEPARATION." In International Conference on Bio-inspired Systems and Signal Processing. SciTePress - Science and and Technology Publications, 2009. http://dx.doi.org/10.5220/0001432802160221.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Piskarskas, A., A. Stabinis, and A. Yankauskas. "Parametric Chirp Reversal and Enhancement: Application in Femtosecond Optics." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/up.1986.wc1.

Full text

Abstract:

Three-wave interaction of phase modulated pulses is of considerable interest in femtosecond nonlinear optics and devices. We concentrate our attention on the phenomenon of the reversal of chirp in real time and chirp enhancement due to three-wave interaction. The reversal of the chirp of light signals by four-wave parametric interaction has been earlier discussed in theoretical works /1,2/, where it was supposed to use the phase conjugation of spectral components for the compensation of phase distortions introduced by the dispersion of group velocities. The main demand for the realization of the chirp reversal is Δν≪1/τ ℛ , where τ ℛ —response time of the nonlinear interaction in the medium, Δν —frequency deviation. It is obvious, that the predominant contribution of the slow components in the third order nonlinearity limits the frequency band of chirp reversal in the isotropic media. On the other hand, three-wave parametric processes are caused by electronic nonlinearity, the response time of which is nearly a femtosecond. Thus, using χ(2) the phase conjugation of spectral components of extremely wide optical range is possible /3/. It is needed to emphasize that broad spectral bandwidth of parametric amplification realized in a number of crystals (CDA, KDP, ect.) solve the problem of amplification of weak phase modulated picosecond signal (e. g. coming from optical fibers) for 5—6 orders and enable to obtain two phase conjugated light pulses with opposite chirps. The reversal of the chirp by parametric amplification allows to use in pulse compressors both the media with the negative as well as positive group velocities dispersion and achieve femtosecond pulses with power exceeding gigawatts. Furthemore, the phase conjugated pulses with the linear chirp open new possibilities in four-photon-phase spectroscopy, dynamic holography of space-time events, as well as in systems of optical data processing (e. g. for the formation of correlation signals).

APA, Harvard, Vancouver, ISO, and other styles

10

Lee, Wing-Kee, and Christopher C. Davis. "Laser interferometric studies of laser-induced surface heating and deformation." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.fo5.

Full text

Abstract:

A He-Ne laser-illuminated Mach-Zehnder interferometer has been used to study the time-resolved surface heating and deformation of various solid materials caused by irradiation with the second harmonic (530 nm) of a pulsed Nd: YAG laser. Both thin and thick metal and semiconductor samples have been studied. For thick samples the thermal stress caused by rapid absorption of laser energy leads to local surface expansion that produces a phase chirp of a He–Ne beam reflected from the deformed surface. For thin samples additional surface deformations result from stress-induced mechanical vibration of the sample. For thin samples the deformation of either the irradiated (front) surface or the back surface can be observed. Interferometric detection of the induced phase chirp, for small phase chirps, leads to a linearly related output signal. The signals for both thick and thin samples can be understood quantitatively on the basis of theories that include thermal expansion of the samples and classical resonant mechanical oscillation of two-edge-clamped thin plates. Quantitative measurements of both surface excursion and temperature rise have been made at laser energies substantially below the damage threshold. Extrapolation of our data yields a melting fluence for silicon of 0.42 J/cm2.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Chirp Signa"

1

Creech, Gregory, Tony Quach, Pompei Orlando, Vipul Patel, Aji Mattamana, and Scott Axtell. Mixed Signal Receiver-on-a-Chip RF Front-End Receiver-on-a-Chip. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada456359.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Ih, Charles S., and Baohua Zhuang. Prototype of On-Chip Signal Processing for Handheld Chemical Agent Sensors. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada391858.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Mazumder, Pinaki. Modeling, Simulation and Design of Plasmonic Interconnects for On-Chip Signal Processing. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada563578.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!