Radar detection method and apparatus
US6577269B2 · kind B2 · utility
65Cited by
181References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93275
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.