SPATIAL CODING FOR DIVERSITY WITH ARRAYS OF INFRARED DETECTORS.
Abstract
The concept of using arrays of infrared cells in order to detect a target in space basically requires the design of spatial codes. In this report, a family of spatial codes is developed which has desirable correlation properties for the redundant mapping of a two dimensional spatial signal onto an array of infrared detectors. The one-to-many transformation is assumed to be accomplished by a beam-splitting procedure. The spatial codes, which are designed for use with a large array of detectors, have a maximum out-of-phase autocorrelation of one, referenced to an in-phase autocorrelation of K for a K element code. The construction procedure yields codes which are considered optimum since they provide a minimum cost in terms of the number of additional detectors required to achieve the same resolution as the uncoded case. Optimum codes and their autocorrelation functions are given for values of K, the number of partitions of the original beam, ranging from one to ten. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1966
- Accession Number
- AD0480738
Entities
People
- D. P. Sullivan
- I. S. Reed
- R. M. Gagliardi
Organizations
- University of Southern California