High Precision Signal Processing Algorithm for White Light Interferometry
نویسندگان
چکیده
منابع مشابه
High Precision Signal Processing Algorithm for White Light Interferometry
A new signal processing algorithm for absolute temperature measurement using white light interferometry has been proposed and investigated theoretically. The proposed algorithm determines the phase delay of an interferometer with very high precision (.
متن کاملSignal Processing for High Precision Phase Measurements*
High precision phase measurement is important for many areas of accelerator operation. In a heterodyne digital receiver, one source of phase error is the thermal variation of the input stage. We have developed a technique to calibrate this drift. A CW calibration signal is sent through the same components together with the RF signal to measure and compensate the component drift. At intermediate...
متن کاملComposite-light-pulse technique for high-precision atom interferometry.
We realize beam splitters and mirrors for atom waves by employing a sequence of light pulses rather than individual ones. In this way we can tailor atom interferometers with improved sensitivity and accuracy. We demonstrate our method of composite pulses by creating a symmetric matter-wave interferometer which combines the advantages of conventional Bragg- and Raman-type concepts. This feature ...
متن کاملEfficient nonlinear algorithm for envelope detection in white light interferometry
A compact and efficient algorithm for digital envelope detection in white light interferograms is derived from a well-known phase-shifting algorithm. The performance of the new algorithm is compared with that of other schemes currently used. Principal criteria considered are computational efficiency and accuracy in the presence of miscalibration. The new algorithm is shown to be near optimal in...
متن کاملBayesian Estimation for White Light Interferometry
In this thesis, a new approach for the reconstruction of height maps from scanning white light interferometry is presented. This method unifies the conventional steps of preand postprocessing within Bayesian inference. An adept formulation of the prior allows for the exact computation of the height estimate, obviating the need for stochastic sampling or simulation methods. In conventional surfa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensors
سال: 2008
ISSN: 1424-8220
DOI: 10.3390/s8127609