chirps: API Client for the CHIRPS Precipitation Data in R
نویسندگان
چکیده
منابع مشابه
Time-frequency and chirps
Chirps (i.e., transient AM-FM waveforms) are ubiquitous in nature and man-made systems, and they may serve as a paradigm for many nonstationary deterministic signals. The time-frequency plane is a natural representation space for chirps, and we will here review a number of questions related to chirps, as addressed from a time-frequency perspective. Global and local approaches will be described ...
متن کاملOn the Time–Frequency Detection of Chirps
The question of detecting a chirp in the time–frequency plane is addressed. Strategies based on line integration are discussed with respect to optimality and adequacy of a representation to a given chirp. Linear and power-law chirps are considered in some detail and a possible application of affine distributions to the detection of gravitational waves is proposed, together with an effective imp...
متن کاملMother templates for gravitational wave chirps
Templates used in a search for binary black holes and neutron stars in gravitational wave interferometer data will have to be computed on-line since the computational storage and retrieval costs for the template bank are too expensive. The conventional dimensionless variable T = (c/Gm)t, where m is the total mass of a binary, in the time-domain and a not-so-conventional velocity-like variable v...
متن کاملFourier Transforms of Finite Chirps
Chirps arise in many signal processing applications. While chirps have been extensively studied both as functions over the real line and the integers, less attention has been paid to the study of chirps over finite groups. We study the existence and properties of chirps over finite cyclic groups of integers. In particular, we introduce a new definition of a finite chirp which is slightly more g...
متن کاملImage-adaptive watermarking using 2D chirps
Linear chirps, a special case of polynomial phase exponentials, have recently been proposed for digital watermarking. In this work, we propose a known-host-state methodology for designing image watermarks that are robust to compression. We use a two-dimensional frequencymodulated chirp as a spreading function in a block-based spatial watermarking scheme. In each block, the chirp is used to embe...
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ژورنال
عنوان ژورنال: Journal of Open Source Software
سال: 2020
ISSN: 2475-9066
DOI: 10.21105/joss.02419