Accession Number : AD0681251

Title :   LIMITATIONS ON AN IMAGE ENHANCEMENT PROCESS.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Brown,Henry A.

Report Date : 03 OCT 1968

Pagination or Media Count : 24

Abstract : In theory, the image enhancement or reconstruction process which utilizes prolate spheroidal wave functions can obtain infinite resolution in a noise-free environment. There are several practical factors which limit this resolution to finite values--truncation of the enhancement process to a finite number of terms, approximation to the process input parameter, the far field, and white noise. Also, for lossy antennas, gain and directivity are limited to approximately that of a uniformly illuminated array. (Author)

Descriptors :   (*RADAR IMAGES, RESOLUTION), NOISE(RADAR), WHITE NOISE, RADAR ANTENNAS, GAIN

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE