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.
We apply the L1 norm approaches on sparsely acquired data of the array ground penetrating radar (GPR) system YAKUMO. Due to the limitation of the antenna size of YAKUMO system, the antenna offsets between each element are much larger than the wavelength. Such sparsely acquired data may introduce strong artifacts to the imaging results such as synthetic aperture radar (SAR) processing and the velocity...
We investigated a velocity analysis algorithm for the new array Ground Penetrating Radar (GPR) system “Yakumo”. The common mid-point (CMP) data, which is used to estimate the vertical profile of subsurface velocity can be acquired easily with this system. However, each CMP data set acquired by Yakumo includes only 8 GPR traces with more than 20 cm trace interval. In order to estimate the velocity...
The solar array which provides most of energy for the satellite plays a very important role. And the conversion coefficient of solar cell used in the solar array is directly influenced by the array temperature, which is also responsibility for the stability and safety of satellite, especially for the solar array. This paper discusses the solar array temperature fields under different situations, including...
Thrust ripple, determined by the magnetic field, is a significant factor to affect the performance of linear motor system. This paper evaluates the effect of the two magnet shapes, rectangle shape and Halbach array, for the flat short secondary type permanent magnet linear synchronous motor (PMLSM). A novel design that makes the PM into a curved shape is presented. Then, each shape analysis is fulfilled...
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.