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 (2004)
Volume: 36 (25) Da Pagina: 6211 A: 6216
Parole chiavi: Heterodyne interferometry; absolute ranging; speckle interferometryCitazioni: 9dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)