| Autor: |
Johnson, Gregory E., Dowski, Edward R., Cathey, W. Thomas |
| Zdroj: |
Applied Optics; April 2000, Vol. 39 Issue: 11 p1700-1710, 11p |
| Abstrakt: |
Passive-ranging systems based on wave-front coding are introduced. These single-aperture hybrid optical–digital systems are analyzed by use of linear models and the Fisher information matrix. Two schemes for passive ranging by use of a single aperture and a single image are investigated: (i) estimating the range to an object and (ii) detecting objects over a set of ranges. Theoretical limitations on estimator-error variances are given by use of the Cramer–Rao bounds. Evaluations show that range estimates with less than 0.1% error can be obtained from a single wave-front coded image. An experimental system was also built, and example results are given. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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