LADAR systems with dynamic receiver filters
US9933514B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2015 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Feb 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
LADAR systems and methods are disclosed. LADAR systems include a LADAR transmitter configured to emit a laser signal from a platform and a LADAR receiver configured to detect the laser signal returning from a target moving relative to the platform. The LADAR receiver includes a dynamic receiver filter with a receiver bandwidth (which may be about equal to the linewidth of the laser signal) and a tunable receiver center wavelength. The LADAR receiver is configured to adjust the receiver center wavelength to a wavelength that is Doppler-shifted due to the target velocity. Methods include transmitting a laser signal from a platform, returning the laser signal from a moving target, adjusting a dynamic receiver filter to a receiver center wavelength that is based upon the center wavelength of the returned laser signal (that includes a Doppler offset due to the relative velocity of the target), and receiving the returned laser signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.