Near-field pulse detection
US11391821B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | May 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/933
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A airborne range finder arranged on an aircraft for surveying a target, the finder comprising an emitter configured for emitting electromagnetic pulses towards the target, a receiver for receiving backscattered pulses, wherein the receiver comprises a projection surface comprising an inner area and an outer area, focusing optics configured for imaging pulses backscattered from a distance equal to or longer than a threshold distance onto the inner area, and pulses backscattered from a distance shorter than said threshold distance onto the inner area and a part of the outer area, a detector configured for detecting and outputting pulses imaged onto the projection surface, and a recorder configured for reading the detector and storing pulses detected only within the inner area as target pulses, storing pulses detected within the outer area as near-field pulses, and tagging each stored pulse with a corresponding pulse reception time, and a control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.