Radiant energy detection system
US4028544A · kind A · utility
16Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1976 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Apr 5, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/781
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radiant energy detection system for discriminating between radiation from a target and ambient radiation wherein optical receiver means is arranged to produce two images of the observed field which are staggered along the direction of displacement of modulating grids by an amount substantially equal to the diameter of the target image, and which includes filtering means and attenuating means to balance the radiation levels in the case of ambient background radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.