THE HIGH FREQUENCY SURFACE WAVE RADAR SOLUTION FOR VESSEL TRACKING BEYOND THE HORIZON

With maximum range of about 200 nautical miles (approx. 370 km) High Frequency Surface Wave Radars (HFSWR) provide unique capability for vessel detection far beyond the horizon without utilization of any moving platforms. Such uniqueness requires design principles unlike those usually used in microwave radar. In this paper the key concepts of HFSWR based on Frequency Modulated Continuous (FMCW) principles are presented. The paper further describes operating principles with focus on signal processing techniques used to extract desired data. The signal processing describes range and Doppler processing but focus is given to the Digital Beamforming (DBF) and Constant False Alarm Rate (CFAR) models. In order to better present the design process, data obtained from the HFSWR sites operating in the Gulf of Guinea are used.  

Whither growth in central and eastern Europe? Policy lessons for an integrated Europe

In this Blueprint, Bruegel Resident Fellows Zsolt Darvas, Jean Pisani-Ferry, André Sapir and their co-authors Torbjörn Becker, Daniel Daianu, Vladimir Gligorov, Michael A Landesmann, Pavle Petrovic, Dariusz K. Rosati and Beatrice Weder di Mauro argue that in view of the depth of integration in Europe, the development model of the central, eastern and south-eastern Europe (CESEE) region, despite its shortcomings, should be preserved. But it should be reformed, with major implications for policymaking both at national and EU levels. If so, what are the required changes? Bruegel and The Vienna Institute for International Economic Studies (wiiw) cooperated to form this expert group of economists from various European countries to research these issues.

Cagan's paradox and money demand in hyperinflation: Revisited at daily frequency

Using daily data the Cagan money demand is estimated and accepted for the most severe portion of Serbia's 1992-1993 hyperinflation, i.e. its last 6 months. An implication is that the public adjusted daily throughout this extreme period. Moreover, the obtained semi-elasticity estimates are by far lower than those previously found using monthly data sets. Consequently, the daily estimates reject the longstanding Cagan's paradox, based on monthly studies, by showing that the economy has been on the correct, increasing side of the Laffer curve almost through the end of hyperinflation. This strongly supports the view that hyperinflation is triggered and driven all way through its end by the government's hunt for non-decreasing seigniorage. Daily adjustments of public in hyperinflation can account for the difference between the results obtained at daily and monthly frequencies, calling into question the latter. Some evidence is offered that the findings of this paper may hold for other hyperinflations.Hyperinflation Money demand Cagan's paradox Daily frequency