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.
Because of the depth limitation when using the impulse ground penetrating radar(GPR) for deep detecting, a ultra-wideband(UWB) deep GPR receiver system using ADC for sampling is designed. Several simulations to the traditional balanced door sampling circuit are carried out, the results demonstrate that the main factors which limit the system's dynamic range is the jitter of sampling trigger pulse...
The interference stripe appears in the penetrating scan experiments of multi-layered medium detection, the experiments are implemented by the single-frequency plane array or the moved single transmitting/receiving (T/R) antenna. Based on the medium boundary conditions of Maxwell equations from the classic electromagnetic theory, the interference stripe phenomenon is studied in the paper. And the commercial...
The Heihe River Basin is a typical arid inland river basin for examining stress on groundwater resources in northwest China. The basin is composed of large volumes of unconsolidated Quaternary sediments of widely differing grain size, and during the past half century, rapid socio-economic development has created an increased demand for groundwater resources. Understanding the hydrogeochemical processes...
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.