Accession Number : AD0639920

Title :   APPLICATION OF THE DALMAN FILTER TO SPHERICAL DISCRETE TRACK SMOOTHING AND PREDICTION.

Descriptive Note : Technical rept. research paper,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Demetry,J. S. ; Hudson,R. E.

Report Date : 01 SEP 1966

Pagination or Media Count : 23

Abstract : The paper investigates the effectiveness of a method for circumventing the problem of nonlinear observation of a linear system's state variables in the Kalman filter discrete estimation scheme. The method employs a linearization of the nonlinear coordinate transformation, in this case cartesian to spherical. The performance of a filter designed by this method is observed as a function of measurement error, accuracy of filter initialization, and the relevance of the estimated initial error covariance, P sub 2/1. The investigation reveals that the most critical factor in filter performance and stability is filter state initialization. (Author)

Descriptors :   (*RADAR TRACKING, MATHEMATICAL PREDICTION), TRANSFORMATIONS(MATHEMATICS), LINEAR SYSTEMS, FUNCTIONAL ANALYSIS, STABILITY

Subject Categories : Theoretical Mathematics
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE