Accession Number : AD0712506

Title :   A PROBABILITY DENSITY FUNCTION FOR THE FUTURE POSITION OF A VESSEL AT SEA.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Owens, M. E. B.

Report Date : 26 AUG 1970

Pagination or Media Count : 14

Abstract : A probability density function was derived which can be used to calculate the probability that the future of a vessel at sea will be in a given region. The density function was derived for the following conditions: at the initial time the actual position of the vessel is a sample from a normal distribution with known mean and covariance matrix; the velocity of the vessel remains constant during the time period of interest; the speed of the vessel is a sample from a chi distribution; and the course of the vessel is a sample from an arbitrary distribution. (Author)

Descriptors :   *SHIPS, TRACKING, PROBABILITY DENSITY FUNCTIONS, DISTRIBUTION FUNCTIONS, VELOCITY, POSITION FINDING.

Subject Categories : Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE