Space-Time Sampling and Filtering
Abstract
This study is oriented toward enhancing the detection of a missile launch as seen from a satellite. Some preliminary considerations of satellite altitude, wave lengths viewed, and optical system used, show up the more important characteristics of the problem on the image plane of the optical system. Considering the intensity distribution on this plane as the input, three important spatial filters are developed, having two-dimensional outputs. The first filter is a linear one whose simulation on an IBM 7090 used a localized target against a random and nonrandom background. The inputs and outputs are shown. The second filter, a general statistical one, has considerable discrimination ability but needs a large amount of statistical information of the background. The third filter, developed along the lines of decision theory, turns out to be remarkably similar to the general one. For each filter the application to multiple wave lengths as well as to point source and nonpoint source targets is considered. The use of several filters combined in a serial or parallel fashion is mentioned.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1961
- Accession Number
- AD0262649
Entities
People
- P. W. Broome
- W. D. Montgomery
Organizations
- General Dynamics