Amplitude ratio discrimination for MTI processors
US5386480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7865
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting an object in a scene. The invention (10) includes memory (12) for storing a first frame of image data represented by a plurality of input signals I.sub.o. A spatial filter (16) is included for spatially filtering a second frame of image data represented by a plurality of input signals I.sub.o to provide first spatial filter output signals of the form .eta..sub.s I.sub.o. These signals are subtracted from the first frame of image data to provide difference signals of the form .eta..sub.D I.sub.o, where .eta..sub.D represents a measure of object registration. A second spatial filter (18) is included for spatially filtering the difference signals to provide spatially filtered difference signals of the form .eta..sub.s .eta..sub.D I.sub.o. Finally, the signals are processed (30) to extract the measure of object registration .eta..sub.D.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.