Airborne target recognition system
US3976999A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1973 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Oct 19, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a radar target acquisition system means are provided for analyzing the video return including an automatic gate circuit causing the range gate to sweep out, and to sequentially sample the video return; a filter acquisition video processing circuit including means for discriminating between random and sinusoidal amplitude modulation appearing on the video return and having known frequency characteristics equal to the scan and pulse repetition frequencies of the radar within the pass band of the filter circuit, and means for comparing the discriminated amplitude modulated video return signal to at least one established threshold; and a track circuit which remains de-activated during the sweeping mode and is activated upon command from the filter acquisition circuit. Means are provided for manually initiating the gate circuit and for inhibiting the track circuit to await response from the filter acquisition circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.