Hybrid digital-optical radar signal processor
US4087815A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1969 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Apr 10, 1989 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/587
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hybrid digital-optical radar signal processor utilizing electro-optic ctals and having no moving parts. The processor is used with a radar having multiple discrete evenly spaced transmit frequencies, generated in a pattern, and is capable of simultaneously processing information relating to multiple targets. In the receiver section of the radar electro-optic crystals, such as Lithium Tantalate (LiTaO.sub.3), act as optical phase shifters and are arranged in a data plane which is illuminated by a CW laser. Provision is made in digital delays and the optical phase shifters to provide flexibility in the selection of the pattern of frequency utilization during the transmit period. The optical output of the processor consists of an illumination pattern in a read-out plane with maximum intensity in said plane at positions corresponding to the velocity and fine range of each target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.