Accession Number : ADA324337

Title :   A Comparison of Circular Error Probable Estimators for Small Samples.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Williams, Charles E.

PDF Url : ADA324337

Report Date : MAR 1997

Pagination or Media Count : 202

Abstract : Several previous studies investigated the performance of competing circular error probable (CEP) estimators for small samples. This estimation is important in ICBM analysis because, due to expense, there are a limited number of ICBM test launches. In the most recent previous study (1993), Tongue considered five CEP estimators in a simulation test, attempting to determine the behavior of these estimators for populations of various bias, ellipticity, correlation, and sample size. In this paper, we build on Tongue's findings in three ways: (1) The number of estimators compared is expanded to eight. (2) Different factors and factor levels are used. (3) In addition to analyzing simulated samples based on the population parameters used to create them, we sort the entire set of samples generated into subsets (sample analysis sets) based strictly on their sample statistics. Analysis conducted on these sample analysis sets models the real life situation of estimating CEP, given a small sample from an unknown population, using only sample statistics.

Descriptors :   *GUIDED MISSILE TRAJECTORIES, *COMPARISON, *ESTIMATES, *WEAPON SYSTEM EFFECTIVENESS, *STATISTICAL ANALYSIS, *CIRCULAR ERROR PROBABLE, TEST AND EVALUATION, COMPUTERIZED SIMULATION, MODELS, PARAMETERS, ACCURACY, POPULATION, COSTS, SAMPLING, SURFACE TO AIR MISSILES, ANTITANK MISSILES, INTERCONTINENTAL BALLISTIC MISSILES.

Subject Categories : Statistics and Probability
      Guided Missile Traj, Accuracy and Ballistics
      Fire Control and Bombing Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE