Accession Number : ADA296160

Title :   Track Initialization Sensitivity in Clutter.

Descriptive Note : Final rept.,

Corporate Author : NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV RI

Personal Author(s) : Streit, Roy L.

PDF Url : ADA296160

Report Date : 14 FEB 1995

Pagination or Media Count : 26

Abstract : Sensitivity to track initialization error is quantified as a function of clutter density for the nearest neighbor assignment function (NNAF). Quality of track initialization is thereby related to assignment accuracy. Two statistical distributions of track initialization error are derived under idealized hypotheses representing excellent and poor performance of the NNAF in clutter. A track initialization error region is obtained by constraining the mean initializing error under the excellent NNAF performance hypothesis to have (lower tail) significance level at most a under the poor NNAF performance hypothesis. The initialization sensitivity region is derived for general nonlinear state equations and for measurement equations with additive Gaussian noise. Examples using constant velocity models are given. The methodology is used to define a family of curves called initialization clutter envelope (ICE) curves. ICE curves plot maximum clutter density against maximum initialization error and are useful for estimating the maximum clutter density at which successful tracking can occur for a given initialization error. (AN)

Descriptors :   *TRACKING, *STATISTICAL DISTRIBUTIONS, *TARGET DETECTION, VELOCITY, MATHEMATICAL MODELS, ALGORITHMS, CLUTTER, GAUSSIAN NOISE, ACCURACY, SENSITIVITY, PROBABILITY DENSITY FUNCTIONS, ICE, ERRORS, ALLOCATIONS, NONLINEAR ANALYSIS, STATISTICAL PROCESSES, NONLINEAR ALGEBRAIC EQUATIONS, EQUATIONS OF STATE, TRACK WHILE SCAN.

Subject Categories : Statistics and Probability
      Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE