Results 1 to 10 of about 158,583 (158)

A Study on Rational Function Model Generation for TerraSAR-X Imagery [PDF]

open access: yesSensors, 2013
The Rational Function Model (RFM) has been widely used as an alternative to rigorous sensor models of high-resolution optical imagery in photogrammetry and remote sensing geometric processing.
Mahdi Motagh   +2 more
doaj   +9 more sources

Does the Rational Function Model’s Accuracy for GF1 and GF6 WFV Images Satisfy Practical Requirements?

open access: yesRemote Sensing, 2023
The Gaofen-1 (GF-1) and Gaofen-6 (GF-6) satellites have acquired many GF-1 and GF-6 wide-field-view (WFV) images. These images have been made available for free use globally.
Xiaojun Shan, Jingyi Zhang
doaj   +3 more sources

Research on concentrated frequency-dependent parameter model for short overhead transmission lines based on first-order rational function fitting

open access: yesFrontiers in Energy Research, 2023
The impedance of power lines is influenced by geological conditions and skin effect, resulting in frequency-dependent characteristics. In this study, a centralized parameter frequency-dependent line model based on first-order rational function fitting is
Botong Li   +4 more
doaj   +3 more sources

A Rational Function Model Based Geo-Positioning Method for Satellite Images without Using Ground Control Points

open access: yesRemote Sensing, 2018
Earth observation satellites with various spatial, spectral and temporal resolutions provide an invaluable means for mapping and monitoring the Earth’s environments.
Zhenling Ma   +4 more
doaj   +3 more sources

DSM Extraction Based on Gaofen-6 Satellite High-Resolution Cross-Track Images with Wide Field of View

open access: yesSensors, 2023
Digital Surface Model (DSM) is a three-dimensional model presenting the elevation of the Earth’s surface, which can be obtained by the along-track or cross-track stereo images of optical satellites. This paper investigates the DSM extraction method using
Suqin Yin   +5 more
doaj   +1 more source

A rational model of function learning [PDF]

open access: yesPsychonomic Bulletin & Review, 2015
Theories of how people learn relationships between continuous variables have tended to focus on two possibilities: one, that people are estimating explicit functions, or two that they are performing associative learning supported by similarity. We provide a rational analysis of function learning, drawing on work on regression in machine learning and ...
Lucas, Christopher G.; id_orcid 0000-0002-6655-8627   +3 more
openaire   +3 more sources

Minimal models for rational functions in a dynamical setting [PDF]

open access: yesLMS Journal of Computation and Mathematics, 2012
AbstractWe present a practical algorithm to compute models of rational functions with minimal resultant under conjugation by fractional linear transformations. We also report on a search for rational functions of degrees 2 and 3 with rational coefficients that have many integers in a single orbit.
Nils Bruin, Alexander Molnar
openaire   +3 more sources

Investigation of 3D Polynomial Model for the Geometric Correction of GeoEye Imagery [PDF]

open access: yesJournal of Engineering Research - Egypt, 2018
GeoEye satellite has provided the world with high spatial resolution 0.50 meter panchromatic images. Not only the high spatial resolution, but also the high spectral, radiometric and temporal resolutions of GeoEye imagery make it ideally suited for ...
Samah Abo Ramadan   +2 more
doaj   +1 more source

Parameter identification method of time-domain stable discrete rational approximation for frequency response of foundations

open access: yesYantu gongcheng xuebao, 2021
The discrete-time rational approximation function is one of the important methods for establishing dynamic analysis model for foundations. The stability and accuracy of the rational function determine those of dynamic time history analysis.
WANG Zhi-yu 1, TANG Zhen-yun 1, 2, DU Xiu-li 1
doaj   +1 more source

Calculating Viewing Angles Pixel by Pixel in Optical Remote Sensing Satellite Imagery Using the Rational Function Model

open access: yesRemote Sensing, 2018
In studies involving the extraction of surface physical parameters using optical remote sensing satellite imagery, sun-sensor geometry must be known, especially for sensor viewing angles.
Kai Xu   +3 more
doaj   +1 more source

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