Results 1 to 10 of about 3,697 (156)

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

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   +2 more sources

Cramer–Rao Lower Bound for SoOp-R-Based Root-Zone Soil Moisture Remote Sensing [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Signals of opportunity (SoOp) reflectometry (SoOp-R) is a maturing field for geophysical remote sensing as evidenced by the growing number of airborne and spaceborne experiments.
Dylan Ray Boyd   +7 more
doaj   +2 more sources

On the Attainment of the Cramer-Rao Lower Bound

open access: yesAnnals of Statistics, 1973
A rigorous proof is given of the often stated fact that if the variance of an unbiased estimator of a function of a real parameter attains the Cramer-Rao lower bound then the family of distributions must be a one-parameter exponential family.
exaly   +3 more sources

On the Attainment of the Cramer-Rao Lower Bound

open access: yesAnnals of Statistics, 1976
It is often stated that the variance of an unbiased estimator of a function of a real parameter can attain the Cramer-Rao lower bound only if the family of distributions is a one-parameter exponential family. A rigorous proof of this statement, subject to certain regularity conditions, has been given by Wijsman.
exaly   +4 more sources

Estimation of the Measurement Accuracy of Wireless Passive Resonance Sensors [PDF]

open access: yesSensors
Resonators are passive devices that respond to an excitation signal by oscillating at their natural frequency with exponentially decreasing amplitudes. Physical, chemical and electrical variables can modify the natural frequencies of resonators.
Leonhard M. Reindl   +5 more
doaj   +2 more sources

Localization and ambiguity resolution algorithm for time-difference fusion of three satellites based on observation filtering [PDF]

open access: yesScientific Reports
To address the issues of low accuracy and time-difference ambiguity in the localization and tracking of multiple satellites, we have conducted a thorough study of the localization algorithm and the ambiguity resolution algorithm for the time-difference ...
Yanli Zhang   +5 more
doaj   +2 more sources

Cramer-Rao lower bounds for atomic decomposition [PDF]

open access: yes1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999
In a previous paper we presented a method for atomic decomposition with chirped, Gabor functions based on maximum likelihood estimation. In this paper we present the Cramer-Rao lower bounds for estimating the seven chirp parameters, and the results of a simulation showing that our sub-optimal, but computationally tractable, estimators perform well in ...
Jeffrey C. O'Neill, Patrick Flandrin
openaire   +1 more source

Variational Bayesian Algorithms for Maneuvering Target Tracking with Nonlinear Measurements in Sensor Networks

open access: yesEntropy, 2023
The variational Bayesian method solves nonlinear estimation problems by iteratively computing the integral of the marginal density. Many researchers have demonstrated the fact its performance depends on the linear approximation in the computation of the ...
Yumei Hu   +5 more
doaj   +1 more source

Malliavin calculus in statistical inference: Cramer-Rao lower bound for fuzzy random variables [PDF]

open access: yesتصمیم گیری و تحقیق در عملیات, 2020
The Cramer-Rao lower bound is obtained by using integration by parts and the Cauchy-Schwarz inequality.  The integration by parts formulas of Malliavin calculus plays a role in this study. The point estimation problem is very crucial and has a wide range
Hossein Jafari, Mohammad Javad Ebadi
doaj   +1 more source

Cramér-Rao Lower Bound for Fuzzy-Valued Random Variables

open access: yesAustrian Journal of Statistics, 2016
In some point estimation problems, we may confront imprecise (fuzzy) concepts. One important case is a situation where all observations are fuzzy rather than crisp.
Hamzeh Torabi
doaj   +1 more source

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