Even after a century of research and study in the field, radar systems with enhanced features are in high demand for surveillance, tracking, and imaging applications, required in both civilian and military contexts. Advanced radar technologies are needed to face the problem of complex environments, with changing electromagnetic properties of targets, such as vehicles, ships, buildings, and terrain, for different frequencies, polarimetric modes, and configurations.

The aim of this special issue is to provide an international forum for researchers to summarize the most recent developments and ideas on emerging radar technologies, with a particular emphasis on the new concepts of compressed sensing and cognitive features. Potential topics include, but are not limited to:

• Compressive sensing/sampling
• MIMO radars
• Cognitive and intelligent radars
• Advances in surface penetrating technologies for imaging, detection, and classification
• Through-wall radar imaging
• Innovative antennas for radar applications
• Advanced hydrological applications of radar
• Deep sea oil exploration
• Target recognition techniques
• Tracking algorithms

The special issue is organized in the framework of the 2013 World Conference on Information Systems and Technologies (WorldCIST13 - http://www.aisti.eu/worldcist13/). The authors of the selected papers, which are accepted and registered for the conference, will be invited to submit their contribution to the special issue.

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jece/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/submit/journals/jece/signal.processing/art/ according to the following timetable: