The produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. For the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. By this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2D-FDTD to save the simulation memory and time, dramatically. ...

Air Force Research Laboratory's Distributed Architecture and Simulation Laboratory (DASL) is designed to support the development of new concepts in space systems. One new concept is AFRL’s TechSat 21 program. TechSat 21 is a cluster of formation-flying and cooperating satellites. TechSat 21 poses significant challenges to satellite operations. The ground control station must be capable of monit...

In the paper a presentation of existing georeferencing technique and a comparison between them is given. This is based on general considerations as well as on results two test applications carried out in the university laboratory, and at the ancient church of San Pietro al Monte in Civate (Lombardia, Italy). Two main ground constraints are currently used for the cultural heritage laser scanning...

This paper discusses geometric modelling and photogrammetric processing methods for high-precision mapping using stereo QuickBird images, and reports research results of data processing in an area in Tampa Bay, Florida,. First, a set of panchromatic “Basic” QuickBird stereo images are evaluated using GPS control points. Systematic errors in the vendor-provided RPCs (Rational Polynomial Coeffici...

The most common approach for geometric correction is the use of mapping polynomial. . It depends on selection of several clearly discernible points, called ground control points (GCPs), in the distorted image, and map them either to their true positions in ground coordinates (e.g. latitude, longitude) measured from a map, or to georeferenced image (corrected before), coordinates of correspondin...

An extensive approach towards the dissemination of expert knowledge and coordination efforts to distributed points and seamless integration of control strategies applied to distributed yet identical systems is crucial to enhance overall efficiency and operational costs. Application of Knowledge-Based Control System via Internet will be very efficient especially in biotechnology, because many in...

digital elevation model (dem) is increasingly used these days as an effective tool to extract elevation data in quantitative environmental and land management studies. the improvement of sensors and land resource satellites has made it possible to generate dem from remotely sensed data. dems which are produced from these data are applied not only in the two dimensional (2d) but also in the thre...