کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7926021 1512512 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Precision improvement of frequency-modulated continuous-wave laser ranging system with two auxiliary interferometers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Precision improvement of frequency-modulated continuous-wave laser ranging system with two auxiliary interferometers
چکیده انگلیسی
The measurement precision of frequency-modulated continuous-wave (FMCW) laser distance measurement should be proportional to the scanning range of the tunable laser. However, the commercial external cavity diode laser (ECDL) is not an ideal tunable laser source in practical applications. Due to the unavoidable mode hopping and scanning nonlinearity of the ECDL, the measurement precision of FMCW laser distance measurements can be substantially affected. Therefore, an FMCW laser ranging system with two auxiliary interferometers is proposed in this paper. Moreover, to eliminate the effects of ECDL, the frequency-sampling method and mode hopping influence suppression method are employed. Compared with a fringe counting interferometer, this FMCW laser ranging system has a measuring error of ±20μm at the distance of 5.8 m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 411, 15 March 2018, Pages 152-157
نویسندگان
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