Accession Number : AD0718440

Title :   Computer Simulation of MTI.

Descriptive Note : Technical note,

Corporate Author : ROYAL RADAR ESTABLISHMENT MALVERN (ENGLAND)

Personal Author(s) : Dodsworth,E. J. ; Hathaway,J.

Report Date : JUN 1970

Pagination or Media Count : 26

Abstract : A computer program has been written which provides an estimate of the performance of an MTI(Moving Target Indicator) system in terms of the probability of clutter false alarms and the probability of detecting an aircraft in cluttered areas. Among other factors, the program takes into account the usual fading of aircraft signals and the wide range of clutter signal levels that can be found in practice over an area of clutter. The clutter model used is based on measurements at S-band at Malvern. The parameters of the MTI system being studied can be varied at will. Most of the results presented are for a system at constant prf using a limiting receiver, double cancellation and non-coherent integration, scanning at a rate giving 5 pulses per beamwidth. It is shown that, although limiting is effective in controlling the number of false alarms from strong clutter signals, the MTI Improvement Factor is considerably reduced as a result of limiting. As a consequence of this there is no advantage in using double rather than single cancellation as regards the probability of detecting an aircraft over the assumed clutter area. Results are also given for an AGC system which provides better performance than limiting, although it would be more difficult to implement in practice. (Author)

Descriptors :   (*MOVING TARGET INDICATORS, MATHEMATICAL MODELS), (*RADAR CLUTTER, SIMULATION), COMPUTER PROGRAMMING, SIGNAL-TO-NOISE RATIO, ATTENUATION, S BAND, FEASIBILITY STUDIES, GREAT BRITAIN

Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE