Accession Number : AD0417422

Title :   PULSE STRUCTURES FOR ENHANCED ACCURACY.

Descriptive Note : Final rept.,

Corporate Author : GENERAL ATRONICS CORP CONSHOHOCKEN PA

Personal Author(s) : Williams,T. L.

Report Date : JUN 1963

Pagination or Media Count : 94

Abstract : The detailed theoretical and experimental data regarding the accuracy of the simultaneous esti mates of range and doppler is presented. The utility of the Tangent Approximation Manifold estimator is discussed. The measurements were made with a target simulator (capable of repre senting two targets plus noise and clutter) and a TAM estimator. The experimental data agrees with the theory except for a few explainable cases. The results definitely prove the advant age of ''Enhanced Accuracy'' waveforms which have no linear frequency modulation. A single TAM estimator is useful only over a region of doppler and range about equal to the resolution of the radar pulse. For the measurement of doppler and range it offers no obvious advantage over a matched filter bank plus an interpolator. But the TAM estimator does provide a measure of multiplicity which is not available from conven tional estimators. The multiplicity estimate is useful to indicate the presence of two targets when the two targets are both in the same range and doppler bin. For some applications the multiplicity estimate may be desired, in which case the TAM estimator will be more useful than a conventional estimator. (Author)

Descriptors :   (*DOPPLER RADAR, NUL), EFFECTIVENESS, RADAR SIGNALS, TARGET, RADAR PULSES, MATHEMATI, DOPPLER SYSTEMS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE