Due to the nonlinear and asymmetric input constraints of fixed-wing UAVs, it is a challenging task design controllers for UAV formation control. Distance-based control does not require global positions as well alignment coordinates, which brings in great convenience designing distributed law. Motivated by facts mentioned above, this paper, problem distance-based UAVs with studied. A low-gain co...

The cereal, oilseeds, and protein crop sector (COP) occupies a prominent position within the European Union’s agricultural sector. Within Spain, the COP sector accounts for almost a third of total Agricultural Guidance and Guarantee Fund expenses, and a half of the utilized agricultural area. The COP sector is not only relevant because of its physical and economic magnitude, but also because of...

global positioning system (gps) signals provide valuable information about ionosphere physical structure. using these signals, can be derived total electron content (tec) for each line of sight between the receiver and the satellite. for historic and other sparse data sets, the reconstruction of tec images is often performed using multivariate interpolation techniques. recently it has become cl...