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.
For the multisensor descriptor systems with correlated noises, the WMF full-order Kalman smoother is presented. First, the centralized fusion descriptor system is obtained. Then this centralized fusion descriptor system is transformed to the descriptor system with uncorrelated noises. Second, the weighted measurement fusion (WMF) descriptor system is presented. Finally, the WMF full-order Kalman and...
Magnetic flux is the basic magnetic quantity. The measurement uncertainty of fluxmeter is usually several parts in 104. This paper proposes a new approach of magnetic flux measurement by measuring the flux difference between rectangular pulse synthesized with a binary Josephson system and the flux under test. Experimental results show that the flux measurement repeatability is several parts in 106...
A comparison between the National Institute of Metrology (NIM) and the Beijing Institute of Radio Metrology and Measurement (BIRMM) Programmable Josephson Voltage Standards (PJVS) at 1 V level was carried out at Changping campus of NIM from November 16 to November 17, 2009. The measured difference voltage between the two PJVS is 2×10-10 in direct comparison and 4×10-9 in indirect comparison. The results...
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.