Results 1 to 10 of about 1,790,403 (266)
Chirp Signal Transform and Its Properties [PDF]
Journal of Applied Mathematics, 2014 The chirp signal exp(iπ(x-y)2) is a typical example of CAZAC (constant amplitude zero autocorrelation) sequence. Using the chirp signals, the chirp z transform and the chirp-Fourier transform were defined in order to calculate the discrete Fourier ...
Mio Horai +2 more
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IEEE Access, 2021 A novel photonic scheme for generating multi-band dual-chirp waveforms with linear or nonlinear chirp rates is proposed via two cascaded polarization modulators (PolMs) paralleled with a phase modulator (PM).
Hongshi Zhao, Jianxin Ma
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Parameter estimation of chirp signals [PDF]
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1990 The problem of the parameter estimation of chirp signals is addressed. Several closely related estimators are proposed whose main characteristics are simplicity, accuracy, and ease of online or offline implementation. For moderately high signal-to-noise ratios they are unbiased and attain the Cramer-Rao bound.
Petar M. Djuric, Steven M. Kay
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Chirp pseudo‐noise signal and its receiving scheme for LEO enhanced GNSS
IET Radar, Sonar & Navigation, 2022 Low earth orbit (LEO) constellations for enhancing global navigation satellite systems (GNSS) have been investigated and studied due to their higher floor power and rapid geometric changes. Compared with GNSS based on medium orbit (MEO) and geostationary
Xin Zhao +4 more
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IEEE Photonics Journal, 2020 A photonics-assisted dual-chirp microwave signal generation scheme is proposed based on electro-optic modulation and heterodyne detection. The dual-chirp microwave signal is generated by heterodyne beating between a dual-chirp optical waveform and a ...
Lingjie Zhang +7 more
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A novel compressive sampling system for chirp signal
IEICE Electronics Express, 2017 Kaiyu Qin
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BOCC: A new modulation based on chirp subcarriers for future BeiDou LEO navigation‐augmented signal
Electronics Letters, 2021 For improving the anti‐interference performance and compatibility of a navigation‐augmented signal in future BeiDou Global Navigation Satellite Systems, a new modulation based on chirp subcarriers is proposed, named binary offset chirp carrier modulation,
Xin Zhao +2 more
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Photonics, 2021 A novel photonic approach to generating switchable multi-format chirp waveforms using a dual-drive dual-parallel Mach–Zehnder modulator (DD-DPMZM) is proposed and experimentally demonstrated.
Chaoqun Huang, Jun Ou, Hao Chi
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An Efficient Digital Channelized Receiver for Low SNR and Wideband Chirp Signals Detection
Applied Sciences, 2023 Synthetic aperture radar (SAR) is essential for obtaining intelligence in modern information warfare. Wideband chirp signals with a low signal-to-noise ratio (SNR) are widely used in SAR.
Wenhai Cheng +4 more
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VERSATILE CHIRP SINE GENERATOR ON FIXED-POINT FPGA
Acta Polytechnica, 2020 This paper deals with a logarithmic and a linear chirp sine generation on a fixed-point FPGA mainly for vibration testing, nevertheless, the generator can also be used in other areas.
Jan Kunz, Petr Beneš
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