Results 181 to 190 of about 3,572 (219)
Some of the next articles are maybe not open access.
Introduction to Chirp Concepts with a Cheap Chirp Radar
American Journal of Physics, 1973The elements of pulse compression of a chirp in a dispersive delay are reviewed and chirp and pulse modes are contrasted. A simple microwave Doppler-shift apparatus is modified info a chirp system to permit distance measurement in a laboratory experiment that is rich in fundamental concepts of physical parameters which are related by the Fourier ...
openaire +1 more source
Optics Communications, 2006
The design of fiber Bragg grating to achieve different chirp amount in the selective transmission channel is presented. The method depends on the combination effect of introduced equivalent chirp with the linearly inherent chirp provided by the phase mask. Since these two chirps can be incorporated, or be counteracted, the different chirp amount can be
Li Xia, Ping Shum, Chao Lu
openaire +1 more source
The design of fiber Bragg grating to achieve different chirp amount in the selective transmission channel is presented. The method depends on the combination effect of introduced equivalent chirp with the linearly inherent chirp provided by the phase mask. Since these two chirps can be incorporated, or be counteracted, the different chirp amount can be
Li Xia, Ping Shum, Chao Lu
openaire +1 more source
Chirp elimination using a linearly chirped fiber grating
Optical and Quantum Electronics, 2001Gain-switched distributed feedback laser diodes (GS-DFB-LD) with high repetition bit rate have large frequency chirp. Conventionally, the F–P spectrum filter and normal dispersion fiber were used to eliminate chirp in GS-DFB-LD pulse sources. In this paper, a new method for eliminating chirp of high repetition pulses generated from DFB laser diodes is ...
Xiaoguang Zhang +3 more
openaire +1 more source
Optical orthogonal chirp division multiplexing with chirp index modulation
Optics LettersWe propose and experimentally demonstrate a modulation technique, termed orthogonal chirp division multiplexing with chirp index modulation (OCDM-CIM), where partial chirps are deliberately unmodulated to reduce interference and energy consumption. OCDM-CIM exhibits the combined advantages of interference rejection from the chirp-spread spectrum in ...
Kunping Luo +5 more
openaire +2 more sources
Chirp cyclic moment for chirp cyclostationary processes: Definitions and estimators
Digital Signal Processing, 2023Hongxia Miao, Feng Zhang 0011
openaire +1 more source
2008
Caleb Plummer and his Blind Daughter lived all alone by themselves, as the Story-books say—and my blessing, with yours to back it I hope, on the Story-books, for saying anything in this workaday world!—Caleb Plummer and his Blind Daughter lived all alone by themselves,...
openaire +1 more source
Caleb Plummer and his Blind Daughter lived all alone by themselves, as the Story-books say—and my blessing, with yours to back it I hope, on the Story-books, for saying anything in this workaday world!—Caleb Plummer and his Blind Daughter lived all alone by themselves,...
openaire +1 more source
Validation of CHIRPS satellite-based precipitation dataset over Pakistan
Atmospheric Research, 2021Muhammad Farooq Iqbal, Irfan Mahmood
exaly