Process and apparatus for the detection of objects, especially of objects having a very small equivalent surface area
US4151527A · kind A · utility
7Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Mar 11, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus for the detection of an object in air, wherein a beam of electromagnetic radiation is emitted, the reflected beam is received, the frequency of the reflected beam being varied discontinuously over a frequency band. The amplitude of the energy of the beam received for the various frequencies of the emitted beam is measured so as to utilize, for the detection of the object, the particular frequency or frequencies of the beam for which the reflected beam possesses a substantially higher energy than the energy of the beam reflected at the other frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.