The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work describes the development of a new optical technique for absolute distance measurements, functioning in safety class 1. By current injection, a wavelength modulation takes place in the laser diode: using a particular algorithm to extract the frequency tone of the fringes induced by the self-mixing effect, it is possible to measure the absolute distance of a target, with a compact and low-cost...
This paper discusses a specific technique for frequency tone detection. Based on a modified DFT series equation, the algorithm provides to enlarge a portion of spectrum of the acquired signal. It starts from an arbitrary point and length, and then individuates the fine peak position. After the theory description, the implemented algorithm is described. Finally, the results confirm the performances...
The paper contains a proposal for the estimation of the frequency of a sine signal corrupted by zero-mean additive white gaussian noise. The method resorts to the histogram of the time intervals between adjacent zero-crossing samples. Validation has been carried out for various noise levels and results show that the relative error is much less than other algorithms for frequency estimation. Performances...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.