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.
To provide slope and full curvature measurements with a single image for each subaperture in zonal wave front sensing, we propose to introduce a wave front modulation to each subaperture of the Shack–Hartmann sensor. This idea is preliminarily realized on a new sensor, which uses a four-hole mask array to modulate the test wave front incident on the lenslet array. Centroid estimation for the local...
We report a holographic photopolymerization technique to fabricate a polymeric photonic bandgap structure whose period varies gradually in the lateral direction, leading to a unique rainbow-colored reflection image in the same viewing angle.
We report a holographic photopolymerization technique to fabricate a polymeric photonic bandgap structure whose period varies gradually along the length of the structure, leading to a unique rainbow-colored reflection image in the same viewing angle.
Wireless technology is regarded as a paradigm shifter in the process industry. In this paper, we study the IWNS for process automation, and design the CR-wFieldNet based control system for process automation with three-layer-network architecture, including the network in the field, the backbone network and the intermediate access network. Following that, we detailed key technologies, including diversified...
A novel method is proposed in this paper to cancel the image-band interference for multi-mode/band receivers with baseband AGC. The Hilbert transformer, which plays an important part in heterodyne multi-mode receivers described here, has the imperfection which results in image-band interference in baseband, causing severe deterioration of transmission performance. The method proposed here cancels...
In order to combat the exposed terminal problem and the interference accumulation phenomenon in wireless channels, this paper proposed a new Asymmetrical Dual Busy Tones (ADBT) MAC protocol. By introducing BT-CTS/BTACK mechanism and the approximate algorithm of interfering nodes, ADBT MAC can solve the exposed terminal problem and the hidden terminal problem in the environment with large interference...
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.