Accession Number : AD0289663

Title :   ESTIMATION OF VARIANCES FOR RADIO DIRECTION FINDING EQUIPMENT

Corporate Author : CALIFORNIA UNIV LOS ANGELES NUMERICAL ANALYSIS RESEARCH

Personal Author(s) : SMITH,W.E.

Report Date : NOV 1962

Pagination or Media Count : 1

Abstract : THE PROBLEM IN THE USE OF RADIO DIRECTION FINDING TECHNIQUES OF ESTIMATING THE VARIANCES OF THE READINGS OBTAINED FROM THE DIFFERENT RECEIVERS IS INVESTIGATED. THESE VARIANCES ARE USED TO PERFORM A LEAST SQUARES ESTIMATE FOR THE MOST PROBABLE POINT FOR THE TRANSMITTER. ONE MAY NOT KNOW THE TRUE POSITION OF ANY TRANSMITTER AND, THEREFORE, CANNOT OBTAIN AN ESTIMATE OF THE VARIANCE OF A SINGLE RECEIVER. BY TAKING SEVERAL RECEIVERS AN ESTIMATE IS MADE OF THE TRANSMITTER POSITION AND USING THIS INFORMATION, AN ESTIMATE IS MADE OF THE ACCURACY OF THE VARIOUS RECEIVERS. A SPECIFIC MODEL WAS DESCRIBED WHICH WAS SIMULATED ON A HIGH-SPEED COMPUTER. THE THEORY, COMPUTATIONS TO BE PERFORMED, AND RESULTS ARE DESCRIBED. THE METHOD IS ABLE TO DISTINGUISH BETWEEN GOOD AND POOR RECEIVERS AND IN MANY CASES GIVES EXCELLENT APPROXIMATIONS TO THE VARIANCES

Descriptors :   *DIRECTION FINDING, *MATHEMATICS, *RADIO EQUIPMENT, ANALYSIS OF VARIANCE, DIGITAL COMPUTERS, LEAST SQUARES METHOD, MATHEMATICAL ANALYSIS, STATISTICAL ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE