Accession Number:

ADA093496

Title:

CCD Analog Programmable Microprocessor (APUP) Study

Descriptive Note:

Final technical rept. 21 Sep 1978-15 Oct 1979

Corporate Author:

WESTINGHOUSE DEFENSE AND ELECTRONICS CENTER BALTIMORE MD ADVANCED TECHNOLOGY DIV

Report Date:

1980-08-01

Pagination or Media Count:

360.0

Abstract:

A cross-correlation of radar signal processing needs and CCD- compatible analog signal processing devices yielded a functional partitioning into several distinct candidates primarily on the basis of data storage time and data format. The azimuth processing function clearly preferred for implementation has two alternate architectures the discrete correlation transform versus the two part combination of a corner-turn memory plus a transversal filter. The greater flexibility of the correlation transform scheme translates immediately into greater user acceptance, larger markets, and lower costs. The details of the transformfilter APUP candidate are given, including an ingenius new application of the traditional pushpull scheme to cancel even- harmonic distortion as well as offset fixed pattern noise arising from non uniformities in thermal leakage or FET threshold. Also incorporated is a new additive refresh technique aimed at maintaining sample-to-sample isolation during multiple recirculations.

Subject Categories:

  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE