Method and device for optimizing the use of multiple emitters and a detector in an active remote sensing application

US11754688B2 · kind B2 · utility

Assignee

• FASTREE3D SA · CH

Inventors

• Stefan Keller · Mainaschaff, DE
• Bruno Penlae · Lausanne, CH

Key dates

• Filing date: Mar 16, 2017
• Grant date: Sep 12, 2023
• Expiry date: Dec 30, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/4868
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method of an optimal arrangement in time and space of nsrc multiple laser emitters and a detector for a remote sensing application, comprising setting a target time unit integration time tp; —translating said time unit integration time into a reduced time τp and its corresponding power increase factor η−1; —repeating for every emitter k of said plurality of nsrc emitters the steps of: —waiting for a given offset duration toffset,k; —activating both the laser emitter k, with a power output corrected by η−1, and the detector for a duration of τp; —deactivating said emitter k and detector after duration τp; —flagging emitter k to be kept off for the subsequent duration toff=tp−τp. The invention further relates to a device implementing said method.