Moving object detecting device
US4287579A · kind A · utility
14Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Nov 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A moving object detecting device employing a pair of Doppler signals as a pair of vector signals of respective received-wave signals representing momentary reflected waves from a moving object. These vector signals are processed to obtain signals denoting in which ones of predetermined zones for the vector rotation depending on the movements of the object the vector is momentarily present, and shifting states of such zone signals through the zones are traced to sequentially determine the direction and period of the vector rotation and to actuate an alarm or the like when the rotation is in a fixed direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.