Double-wavelength superheterodyne interferometer for absolute ranging with submillimeter resolution: results obtained with a demonstration model by use of rough and reflective targets

Anno: 1997

Autori: Margheri G., Giunti C., Zatti S., Manhart S., Maurer R.

Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Alenia Difesa Unita` Officine Galileo, Via A. Einstein 35,Campi Bisenzio, Firenze, Italy;
Daimler-Benz Aerospace, Ottobrunn, Munich, Germany

Abstract: The potential of double-wavelength interferometry is well known, especially regarding the capability of performing absolute distance measurements of rough targets with high resolutions. We describe the experimental results obtained with a demonstration model of a double-wavelength interferometer with superheterodyne detection. Our system, implemented with two four-quadrant detectors to improve the detection probability, has demonstrated the ability to reach resolutions of 0.2 mm at 5-m distances on rough targets in 50-ms integration time.

Giornale/Rivista: APPLIED OPTICS

Volume: 36 (25)      Da Pagina: 6211  A: 6216

Parole chiavi: heterodyne interferometry; absolute ranging; speckle interferometry
DOI: 10.1364/AO.36.006211

Citazioni: 12
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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