Object sensing apparatus, object sensing method, and computer readable recording medium
US11385342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jan 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/356
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object sensing apparatus 1 includes: an emission unit 11 configured to emit an RF transmission signal in each period; a reception unit 21 configured to receive a reflected wave of the RF transmission signal as an RF reception signal; an IF signal generation unit 22 configured to generate an IF signal by mixing the RF transmission signal and the RF reception signal; a one-dimensional spectrum generation unit 23 configured to generate a one-dimensional spectrum with respect to distance obtained using the object sensing apparatus as a reference, based on the IF signal, and use the generated one-dimensional spectrum to generate a one-dimensional spectrum with fixed object reflection removed, from which a signal component caused by a reflected wave from a fixed object present in an emission range has been removed; a position detection unit 24 configured to detect a position of an object other than the fixed object based on the amplitude of the one-dimensional spectrum with fixed object reflection removed; and a displacement detection unit 25 configured to detect displacement of the object other than the fixed object, based on the phase of the one-dimensional spectrum with fixed objec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.