Accession Number : AD0639782

Title :   SYSTEMATIC TRACK RECONSTRUCTION(STR) COMPUTER PROGRAM.

Descriptive Note : Final rept.,

Corporate Author : NATIONAL ENGINEERING SCIENCE CO PASADENA CALIF

Personal Author(s) : Stern,Donald ; wilson,O. ; Brawn,Barbara S. ; Chenoweth,James M.

Report Date : AUG 1966

Pagination or Media Count : 75

Abstract : The present technique for resolving navigational conflicts involves 'eyeballing' the tracks, and guessing a possible solution. At best, this is not reproducible. The report describes a mathematically consistent method for obtaining the most probable estimate of actual positions from these conflicting records. Physically, the mathematics correspond to sliding the DRTs with respect to one another, rotating them, and stretching them so that a statistical compromise is obtained from the conflicting reports of ship position. As a comprmise, therefore, reconstructed tracks may differ from actual ship movements. The computer program determines a confidence level for each reconstructed track which is a measure of the probability that the actual course differs from the reconstructed track. (Author)

Descriptors :   (*COMPUTER PROGRAMMING, *TRACKING), (*ANTISUBMARINE WARFARE, TRACKING), (*SHIPS, TRACKING), SUBMARINES, POSITION FINDING, NAVIGATION

Subject Categories : Computer Programming and Software
      Undersea and Antisubmarine Warfare

Distribution Statement : APPROVED FOR PUBLIC RELEASE