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.
The limited transmitting frequency and the adaptability of geological conditions are the main problems which the geological electromagnetic detection faced in our country. To obtain more parameters at the same power supply and improve the detection of depth and efficiency, the power supply technology of multi-frequency and a constant amplitude is developed and applied, meanwhile, this paper introduces...
High-power and large-depth are big problems which restrict the development of electromagnetic detection technology. One of the solutions is to provide numerous frequencies of power supply which can expand the range of the frequency. In this paper, a new control strategy of inverter based on FPGA is proposed. It can make the inverter emit multiple frequencies and deepen the detection depth. This research...
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.