Method and system for three dimensional digital holographic aperture synthesis
US10527729B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 3, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2226/13
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Laser 3D imaging techniques include splitting a laser temporally-modulated waveform of bandwidth B and duration D from a laser source into a reference beam and a target beam and directing the target beam onto a target. First data is collected, which indicates amplitude and phase of light relative to the reference beam received at each of a plurality of different times during a duration D at each optical detector of an array of one or more optical detectors perpendicular to the target beam. Steps are repeated for multiple sampling conditions, and the first data for the multiple sampling conditions are synthesized to form one or more synthesized sets. A 3D Fourier transform of each synthesized set forms a digital model of the target for each synthesized set with a down-range resolution based on the bandwidth B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.