CCD Analog Programmable Microprocessor (APUP) Study
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 transform/filter APUP candidate are given, including an ingenius new application of the traditional push/pull 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1980
- Accession Number
- ADA093496
Entities
People
- A. R. Gedance
- Donald R. Lampe
- I. A. Mack
- J. Mattern
- S. J. Mederer