Results 21 to 30 of about 224,032 (261)

Edge estimation method for non-uniform envelope pulse based on instantaneous frequency

open access: yesThe Journal of Engineering, 2019
Pulse edge estimation has always been an important issue in the field of electronic reconnaissance. Here, for the unknown received pulse with non-uniform envelope, a novel pulse edge estimation method based on instantaneous frequency is proposed.
Jingyun Sun, Jiacen Xu, Lixiang Ren
doaj   +1 more source

Formulation of the Alpha Sliding Innovation Filter: A Robust Linear Estimation Strategy

open access: yesSensors, 2022
In this paper, a new filter referred to as the alpha sliding innovation filter (ASIF) is presented. The sliding innovation filter (SIF) is a newly developed estimation strategy that uses innovation or measurement error as a switching hyperplane.
Mohammad AlShabi, Stephen Andrew Gadsden
doaj   +1 more source

Unbiased converted measurement manoeuvering target tracking under maximum correntropy criterion

open access: yesCognitive Computation and Systems, 2020
In this study, the manoeuvering target tracking problem is addressed by using the unbiased converted measurements from a two-dimensional radar system.
Guoyong Wang, Xiaoliang Feng
doaj   +1 more source

Estimation of human gait features by trajectory tracking and recombination using radar range‐Doppler‐time data

open access: yesIET Radar, Sonar & Navigation, 2023
Radar enables a convenient, contactless way for gait analysis in daily scenarios, such as in‐home health monitoring. However, the overlapping of human limb components could occur in both range and velocity dimensions of the radar echo, which makes it ...
Tong Mao   +4 more
doaj   +1 more source

The Theory of Unbiased Estimation

open access: yesThe Annals of Mathematical Statistics, 1946
Summary: Let \(F(P)\) be a real valued function defined on a subset \(\mathcal{D}\) of the set \(\mathcal{D}^\ast\) of all probability distributions on the real line. A function \(f\) of \(n\) real variables is an unbiased estimate of \(F\) if for every system, \(X_1, \dots, X_n\), of independent random variables with the common distribution \(P\), the
openaire   +2 more sources

Theory of Estimation-of-Distribution Algorithms [PDF]

open access: yesProceedings of the 2020 Genetic and Evolutionary Computation Conference Companion, 2019
This is a preliminary version of a chapter in the upcoming book "Theory of Randomized Search Heuristics in Discrete Search Spaces", edited by Benjamin Doerr and Frank Neumann, to be published by ...
Martin S. Krejca, Carsten Witt
openaire   +3 more sources

On the Theory of Ban Estimates

open access: yesThe Annals of Mathematical Statistics, 1959
The notion of best asymptotically normal estimates--BAN estimates for short--was introduced by Neyman [8] in the multinomial case. Applications have been made in biological problems, notably in bio-assay [2], [4], [5]. Generalizations of Neyman's work have been made by Barankin and Gurland [1], Chiang [3] and Ferguson [5].
openaire   +3 more sources

Contribution to the Theory of Pitman Estimators [PDF]

open access: yesJournal of Mathematical Sciences, 2014
New inequalities are proved for the variance of the Pitman estimators (minimum variance equivariant estimators) of θconstructed from samples of fixed size from populations F(x-θ). The inequalities are closely related to the classical Stam inequality for the Fisher information, its analog in small samples, and a powerful variance drop inequality.
Kagan, A. M.   +3 more
openaire   +3 more sources

Cramér–Rao Lower Bound for Magnetic Field Localization around Elementary Structures

open access: yesSensors
The determination of a mobile terminal’s position with high accuracy and ubiquitous coverage is still challenging. Global satellite navigation systems (GNSSs) provide sufficient accuracy in areas with a clear view to the sky. For GNSS-denied environments
Armin Dammann   +2 more
doaj   +1 more source

Height estimation improvement via motion compensation based on sub-aperture method for interferometry SAR system

open access: yesThe Journal of Engineering, 2019
Baseline is the key factor for highly accuracy terrain elevation measurement in InSAR system. Variation of baseline attitude induced by aircraft's unstable motion leads to phase errors varying along the aperture.
Yue Wang   +4 more
doaj   +1 more source

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