Coherent optical sensor with sparse illumination
US12154194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2020 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Aug 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for a target image reconstruction is provided. The method includes emitting stepped frequency waveforms having different constant frequencies at different periods of time, modulating the stepped frequency waveforms into frequency ranges each having a first frequency and a second frequency, wherein each of the stepped frequency waveforms are increased from the first frequency to the second frequency based on a range function, wherein the modulated stepped frequency waveforms are arranged with some sparsity factor. The method further includes transmitting the modulated stepped frequency waveforms to a target and accepting reflection of the modulated stepped frequency waveforms reflected from the target interfering the modulated stepped frequency waveforms and the reflection of the modulated stepped frequency waveforms to produce beat signals of interferences between the modulated stepped frequency waveforms and the reflection of the modulated stepped frequency waveforms, and reconstructing an image of the target from the beat signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.