Results 291 to 300 of about 1,688,460 (309)
Some of the next articles are maybe not open access.

Probability of Detecting Aircraft Targets

IEEE Transactions on Aerospace and Electronic Systems, 1972
The statistics of aircraft radar cross section (RCS) are estimated by fitting members of the chi-square family of distributions to empirical distributions obtained from blocks of RCS data, each block of data corresponding to a particular aircraft azimuth aspect. The parameters of the fitted distributions vary with azimuth aspect angle, type of aircraft,
openaire   +1 more source

Detection probability and detection time using clutter metrics

Infrared Physics & Technology, 2007
We modified the structure similarity index, which is extensively used for image quality assessment, to be clutter metrics and call them target structure similarity measures (TSSIM). Two methods for calculating the TSSIM metrics were suggested. In this paper, via different mathematical formulas, the metrics are used to predict detection probabilities ...
Honghua Chang, Jianqi Zhang
openaire   +1 more source

Nondetects, Detection Limits, and the Probability of Detection

Journal of the American Statistical Association, 1991
Abstract When chemists cannot quantify the concentration in a field sample, they report nondetect instead of a numerical measurement. A data analyst faced with environmental data containing nondetects might assume that all nondetects are zeros, all nondetects are smaller than the smallest detect (numerical measurement), or, if a detection limit is ...
Diane Lambert   +2 more
openaire   +1 more source

STATE-SPECIFIC DETECTION PROBABILITIES AND DISEASE PREVALENCE

Ecological Applications, 2007
Investigations of disease dynamics in wild animal populations often use estimated prevalence or incidence as a measure of true disease frequency. Such indices, almost always based solely on raw counts of infected and uninfected individuals, are often used as the basis for analysis of temporal and spatial dynamics of diseases. Generally, such studies do
Christopher S, Jennelle   +3 more
openaire   +2 more sources

THEORY OF CUMULATIVE DETECTION PROBABILITY

1964
Abstract : Cumulative detection probability, cdp, is defined as probability of at least one success in n trials. 'Success' means that the (signal) stochastic process exceeds a given threshold. Exact formulas or approximations for cdp are given in the cases where the process being sampled in the trials is two-state Markov, Gaussian, 'step, 'and' step ...
Edward S. Boylan   +2 more
openaire   +1 more source

A Multiple-Detection Probability Hypothesis Density Filter

IEEE Transactions on Signal Processing, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tang, X.   +5 more
openaire   +3 more sources

Model-Assisted Probability of Detection

2013
To validate the performance of inspection techniques, probability of detection (POD) studies are performed. The preparation of POD samples with real fatigue cracks and the process to acquire a statistically significant number of measurements is often very time consuming and expensive, providing a significant burden for the validation of new inspection ...
Harold A. Sabbagh   +4 more
openaire   +1 more source

Probability hypothesis density filter with low detection probability

IET Conference Proceedings, 2021
M. Wu   +5 more
openaire   +1 more source

Neuropsychological Detection of Early Probable Alzheimer’s Disease

2000
Alzheimer’s disease is the most common of the degenerative dementias affecting up to 47% of the population over the age of 85 (1,2). As the age distribution shifts over the next quarter century, the increasing prevalence of Alzheimer’s disease poses a significant health care crisis and intensifies the need for greater research efforts toward detection,
Dorene M. Rentz, Sandra Weintraub
openaire   +1 more source

Probability of Detection and Reliability

2016
Ultrasonic nondestructive evaluation is often used to help guarantee safety and reliability of critical structures and systems. Thus, it is natural to leverage the use of ultrasonic models in the determination of inspection parameters such as probability of detection (POD) and in estimating the influence that inspections have on reliability.
openaire   +1 more source

Home - About - Disclaimer - Privacy