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.
In the actual GNSS space signal quality monitoring system, the performance of the channel is not ideal, resulting in the signal transmitted to the receiver is inconsistent with the signal received by the antenna. Studying the characteristics and designing the equalization algorithm of the channel could restore the received signal to the real state, which will ensure the quality monitoring results...
To attain fast and accurate parameters estimation of LFM signal under low signal and noise ratio conditions, a novel algorithm is presented. In this algorithm, LFM signal is first converted into multi-section signals with the same length and known frequency-difference by an easy sampling method, and the relation between the parameters of LFM signal and frequencies as well as frequency-differences...
By studying the best-path problem for public transportation systems, we found that the nature of transfer is that it requires extra costs from an edge to its adjacent edge. Therefore, we propose the notion of direct/indirect adjacent edges in weighted directed multigraphs and extend the notion of path to the line. We use the direct/indirect adjacent edges weighted directed multigraph as a public transportation...
A large amount of data has accumulated in teaching appraisal that must be done every semester among most universities. In order to find out the law or model hidden in these data, the data mining technology should be used fully. This thesis introduces the application of association rules mining in the teaching appraisal, which can effectively guide the teaching work by finding out the intrinsic association...
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.