Results 21 to 30 of about 2,865,260 (284)

LOCAL HEIGHT CALCULATION ERRORS IN THE PLANET SURFACE RELIEF RETRIEVED FROM IMAGES BY THE IMPROVED PHOTOCLINOMETRY METHOD [PDF]

open access: yesRadio Physics and Radio Astronomy
Subject and Purpose. In this work, the planet surface area relief is calculated using the Improved Photoclinometry Method (IPCM) and starting from a set of source images. Height deviations from the true relief altitudes are studied by computer simulation
I. A. Dulova, N. V. Bondarenko
doaj   +1 more source

Selective Sampling and Optimal Filtering for Subpixel-Based Image Down-Sampling

open access: yesIEEE Access, 2019
Subpixel-based image down-sampling has been widely used to improve the apparent resolution of down-sampled images on display. However, previous subpixel rendering methods often introduce distortions, such as aliasing and color-fringing.
Sung-Ho Chae   +4 more
doaj   +1 more source

Optimal Filtering of Markov Jump Processes Given Observations with State-Dependent Noises: Exact Solution and Stable Numerical Schemes

open access: yesMathematics, 2020
The paper is devoted to the optimal state filtering of the finite-state Markov jump processes, given indirect continuous-time observations corrupted by Wiener noise.
Andrey Borisov, Igor Sokolov
doaj   +1 more source

A Survey on Optimal Signal Processing Techniques Applied to Improve the Performance of Mechanical Sensors in Automotive Applications

open access: yesSensors, 2007
In this paper a survey on recent applications of optimal signal processing techniques to improve the performance of mechanical sensors is made. Here, a comparison between classical filters and optimal filters for automotive sensors is made, and the ...
Wilmar Hernandez
doaj   +1 more source

A Sliding Window Optimal Tracking Differentiator Filtering Method for Satellite Telemetry Data

open access: yesXibei Gongye Daxue Xuebao, 2020
The initial satellite telemetry data acquired by ground stations usually contain noise and outlier interference. In order to ensure the accurate analysis of satellite status, the telemetry data need to be filtered. In this paper, a sliding window optimal

doaj   +1 more source

Recursive Elimination Method in Moving Horizon Estimation for a Class of Nonlinear Systems and Non-Gaussian Noise

open access: yesSICE Journal of Control, Measurement, and System Integration, 2020
This paper proposes a recursive elimination method for optimal filtering problems of a class of discrete-time nonlinear systems with non-Gaussian noise. By this method, most of the computations to solve an optimal filtering problem can be carried out off-
Tomoyuki Iori, Toshiyuki Ohtsuka
doaj   +1 more source

Spatiotemporal Filtering and Noise Analysis for Regional GNSS Network in Antarctica Using Independent Component Analysis

open access: yesRemote Sensing, 2019
The common mode error (CME) and optimal noise model are the two most important factors affecting the accuracy of time series in regional Global Navigation Satellite System (GNSS) networks.
Wenhao Li   +5 more
doaj   +1 more source

A mobile sensing approach to distributed consensus filtering of 2D stochastic nonlinear parabolic systems with disturbances

open access: yesSystems Science & Control Engineering, 2023
The focus of this paper is on distributed consensus filtering in two-dimensional (2D) space for stochastic nonlinear parabolic systems with disturbances. Distributed filters are used in mobile sensor networks to achieve consensus estimate. By utilizing a
Xueming Qian, Baotong Cui
doaj   +1 more source

Robust Quadratic Optimal Control for Discrete-Time Linear Systems with Non-Stochastic Noises

open access: yesApplied Sciences, 2022
In this paper, the quadratic optimal control problem is investigated for the discrete-time linear systems with process and measurement noises which belong to specified ellipsoidal sets.
Jiaoru Huang   +4 more
doaj   +1 more source

Fingerprint Filters Are Optimal

open access: yes2025 IEEE 66th Annual Symposium on Foundations of Computer Science (FOCS)
23 pages, 2 figures, in FOCS ...
William Kuszmaul   +2 more
openaire   +2 more sources

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