Vehicle obstacle warning radar
US7295154B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Aug 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93275
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting an object using a transmitting antenna and an array of receiving antennas. The method comprises the step of transmitting a signal from the transmitting antenna. The magnitude and phase of a respective received signal at each of the receiving antennas is then measured. Next, the magnitude of a weighted sum of respective phase-compensated signals related to each of the receiving antennas is determined. The magnitude of the weighted sum is compared against a first predetermined threshold value and, optionally, a second predetermined threshold value. An object may be detected by considering a ratio of the magnitude of the weighted sum to the first predetermined threshold value and, optionally, to the second predetermined threshold value. In some embodiments, a second array of receiving antennas may be provided to facilitate the determination of the location of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.