Accession Number : AD0780692

Title :   Solitary Occupancy for Unequal Cell Probabilities with Application to Doppler Radars for Ocean Surveillance.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Stalford,Harold L.

Report Date : 20 MAY 1974

Pagination or Media Count : 25

Abstract : An occupancy problem in combinatorial theory is investigated whose solution has application in ocean surveillance. In particular, theory is developed for calculating the probability of solitary occupancy of N objects in M cells of unequal cell probabilities. For t = 2, 3,...,N the sum of the cell probabilities when all are raised to the t th power is defined as a new variable. These N-1 new variables are shown to be sufficient as arguments in representing the above probability as a polynomial equation. As an application, the theory is used to calculate the capability of a doppler radar to resolve N ship dopplers contained in the same range and azimuth cell. An integration method is also employed to calculate the same capability. The agreement is excellent between both methods. (Author)

Descriptors :   *Ocean surveillance, *Doppler radar, Ships, Probability

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE