Accession Number : AD0846674

Title :   Digital Estimation Errors of Echo Signal Parameters in the Presence of Small Noise,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Szyszkiewich, J.

Report Date : 19 MAR 1968

Pagination or Media Count : 29

Abstract : The problem estimating radar signal parameters in the multibeam system, in which the angle of elevation of the object is set by the interbeam interpolation method, has been investigated. The radar signal is received in channels with separate antenna beams. All channels use the same transmitted signal in such a way that the cause of differences between echo signals received reflects the differences in antenna characteristics. Antennas of separate channels have the same shape and differ only in elevation. All of them rotate at a constant speed along an azimuth. The basis for deciding on the echo-signal parameters is the sequence of signal amplitudes received in all channels for a specific range. It is assumed that signal pulses are quantized and standardized before being fed into the decision system. The presence of noise is taken into account by assuming the independence of noise in separate channels and in separate transmitting periods. It is assumed that the estimated parameters (of the echo signal and the target parameters), namely, the azimuth, the elevation angle of the elevation and the signal level (which depends on the reflecting surface of the object) do not change in the observation period.

Descriptors :   (*RADAR PULSES, INFORMATION THEORY), DECISION THEORY, NOISE(RADAR), DIGITAL SYSTEMS, ERRORS, INTERPOLATION, RADAR ANTENNAS, OPTIMIZATION, SEQUENCES(MATHEMATICS), POLAND.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE