CFMCW - Coherent Frequency Modulated Continuous Wave Absolute Distance Meter

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Forschungsstelle

INNOSUISSE

Projektnummer

8348.2;7 NMPP-NM

Projekttitel

CFMCW - Coherent Frequency Modulated Continuous Wave Absolute Distance Meter

Projekttitel Englisch

CFMCW - Coherent Frequency Modulated Continuous Wave Absolute Distance Meter

Texte zu diesem Projekt

	Deutsch	Französisch	Italienisch	Englisch
Kurzbeschreibung	-	-	-
Abstract	-	-	-

Erfasste Texte

Kategorie	Text
Kurzbeschreibung (Englisch)	CFMCW - Coherent Frequency Modulated Continuous Wave Absolute Distance Meter
Abstract (Englisch)	The project CFMCW deals with the development of an absolute distance meter for industrial application such as coordinate measurement machines (CMM) and laser scanners. These applications are characterized by extreme requirements on measurement accuracy ( �� 100ìm), and measurement range (up to 100m). They ideally operate both on cooperative and non-cooperative targets with measurement rates that are suitable for object scanning. Todays interferometric methods can in principle fulfill these needs. In practice, the available systems are often limited by non-idealities of the laser source, and much effort has therefore been put into enhancing the performance thereof. In this project, a different approach shall be pursued: Rather than modifying the laser source, algorithmic measures are taken to measure and compensate for the major laser non-idealities, such as phase-noise or tuning-nonlinearities, in the detection process. As a benefit, we expect major reductions in system complexity and cost.

Kategorie

Text

Kurzbeschreibung
(Englisch)

CFMCW - Coherent Frequency Modulated Continuous Wave Absolute Distance Meter

Abstract
(Englisch)

The project CFMCW deals with the development of an absolute distance meter for industrial application such as coordinate measurement machines (CMM) and laser scanners. These applications are characterized by extreme requirements on measurement accuracy ( �� 100ìm), and measurement range (up to 100m). They ideally operate both on cooperative and non-cooperative targets with measurement rates that are suitable for object scanning. Todays interferometric methods can in principle fulfill these needs. In practice, the available systems are often limited by non-idealities of the laser source, and much effort has therefore been put into enhancing the performance thereof. In this project, a different approach shall be pursued: Rather than modifying the laser source, algorithmic measures are taken to measure and compensate for the major laser non-idealities, such as phase-noise or tuning-nonlinearities, in the detection process. As a benefit, we expect major reductions in system complexity and cost.