A High Data Rate Digital Spatial Frequency Tracking System,
Abstract
This study analyzes a non-imaging high data rate tracking system. The system optically sums the scene energy onto two perpendicular linear diode arrays. The current distribution on these diode arrays is Fourier transformed giving the amplitude and phase position of the individual spatial frequency components. On successive frames of data the difference in phase is shown to be proportional to the scene displacement. A statistical approach is used to calculate the displacement distance. Using spatial frequencies, subresolution element tracking accuracies are achieved. The equivalence of this system to a correlation tracker is shown and the effect of noise in the signal is analyzed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1974
- Accession Number
- ADA006692
Entities
People
- Harry M. Dobbins
- Michael J. Noviskey
Organizations
- Air Force Research Laboratory