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High resolution physically based modelling reveals malaria incidence reduction by vector control measures. [PDF]
Sci RepDieng MDB +11 more
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Chirp, Self-Chirp and Meta-Chirp in Sampled Fibre Gratings
Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications, 1995Sampled Bragg gratings consist of a periodic modulation of the amplitude and/or the phase of the Bragg grating. In the frequency domain, their reflectivity spectrum shows a number of equally spaced peaks, covering a range of wavelengths determined by the Fourier contents of the modulation, or "sampling" function.
François Ouellette +3 more
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Compressive Chirp Transform for Estimation of Chirp Parameters
2019 27th European Signal Processing Conference (EUSIPCO), 2019This paper develops a new algorithm for estimating the parameters of multiple chirp signals in noise. The proposed method uses Compressive Sensing (CS) formulation of the Discrete Chirp Fourier Transform (DCFT) basis to achieve superior estimator performance.
Luay Ali Al Irkhis, Arnab K. Shaw
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Chirp compression with single chirped mirrors and its assembly
Microelectronics Journal, 2008Chirped mirrors are widely used in ultrafast optics as broadband devices for dispersion compensation. Time domain analysis in contrast to frequency domain one allows the direct investigation of pulse profile changing during chirp compression. We model the chirped pulse compression with single chirped mirror and assembly of similar mirrors. Our analysis
S. O. Yakushev +3 more
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Multiple Linear Chirp-Based Partial-Band Chirp Jamming for Chirp Spread Spectrum Systems
2019 International Conference on Information and Communication Technology Convergence (ICTC), 2019The conventional noise-based jamming strategy that randomly radiates high power radio frequency signals limits the jamming performance when the bandwidth is spread more widely. Moreover, increasing the jamming bandwidth to deteriorate entire spreading bandwidth reduces the jamming bandwidth efficiency.
Kwang-Yul Kim +3 more
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The impact of range chirp on chirp scaling algorithm
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293), 2003The chirp scaling algorithm (CSA) is considered as an efficient SAR imaging algorithm. The existence of the range-uncompressed chirp is the necessary condition for CSA to be used. However, if the range chirp is large in the high squint angle case, there will be a strong coupling between the range chirp and azimuth frequency.
null Sun Xiaobing, null Yeo Tat Soon
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Applied Optics, 2008
Optimized chirped mirrors may perform suboptimally, or completely fail to satisfy specifications, when manufacturing errors are encountered. We present a robust optimization method for designing these dispersion-compensating mirror systems that are used in ultrashort pulse lasers. Possible implementation errors in layer thickness are taken into account
Omid, Nohadani +3 more
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Optimized chirped mirrors may perform suboptimally, or completely fail to satisfy specifications, when manufacturing errors are encountered. We present a robust optimization method for designing these dispersion-compensating mirror systems that are used in ultrashort pulse lasers. Possible implementation errors in layer thickness are taken into account
Omid, Nohadani +3 more
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2023
AbstractHere Dickens elects an agent of change associated with domesticity. The Cricket’s task is to heal a broken marriage between a middle-aged carrier of parcels, John Peerybingle, and his young bride Dot. This appears to be another version of unfortunate January-May marriages, set in late January when the carrier married a year ago.
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AbstractHere Dickens elects an agent of change associated with domesticity. The Cricket’s task is to heal a broken marriage between a middle-aged carrier of parcels, John Peerybingle, and his young bride Dot. This appears to be another version of unfortunate January-May marriages, set in late January when the carrier married a year ago.
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Optimization of chirped mirrors
Applied Optics, 2002We demonstrate that a highly efficient global optimization of chirped mirrors can be performed with the memetic algorithm. The inherently high sensitivity of chirped-mirror characteristics to manufacturing errors can be reduced significantly by means of the stochastic quasi-gradient algorithm.
Vladislav, Yakovlev, Gabriel, Tempea
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