Potential terrorists/adversaries can exploit a wide range of airborne threats against civilian and military targets. Currently there is no effective, low-cost solution to robustly and reliably detect and identify low observable airborne vehicles such as small, low-flying aircraft or cruise missiles that might be carrying chemical, biological or even nuclear weapons in realistic environments. Th...

radio generation and transmission of radio signals by Ernst F. W. Alexanderson in 1906 signalled the beginning of modern radio communication and, subsequently, radio frequency identification (RFID). RFID is the convergence of radio broadcast technology and radar, although many of its early developments are not widely known due to the military significance of this technology. Most documented his...

High Range Resolution (HRR) Moving Target Indication (MTI) is becoming increasingly important for many military and civilian applications such as the detection and classi cation of moving targets in strong clutter background. Meanwhile, using polarization diversity in radar systems has been shown to result in improved performances as compared to using only a single polarization channel. In this...

Today’s technological advances allow for the development of unmanned aerial systems, fixed-wing aircraft, that are small enough and fly low enough to elude conventional radar detection. Such aircraft could carry out chemical, biological, or nuclear attacks, or they could be employed to smuggle drugs or illegal immigrants across the border. This chapter describes a low cost, low power (potential...

The increasing request for safety, security and environment protection at local and national level reveal the deficiency of the traditional surveillance and control centers to satisfy the needs and requirements of modern border control systems for homeland protection where land border is expected to be monitored as well as the maritime one. This is, for instance, the case of any land border ...

In the recent years, the radar technology, once used predominantly in the military, has started to emerge in numerous civilian applications. One of the areas that this technology appeared is the automotive industry. Nowadays, we can find various radars in modern cars that are used to assist a driver to ensure a safe drive and increase the quality of the driving experience. The future of the aut...

■ Situation awareness and accurate target identification are critical requirements for successful battlefield management. Ground vehicles can be detected, tracked, and imaged by using airborne or space-borne microwave radar. Obscurants, however, such as camouflage net and tree-canopy foliage can degrade the performance of these radars. Foliage can be penetrated with long-wavelength microwave ra...

High resolution digital elevation models (DEMs) have been used in many applications such as civic planning, military mapping and navigation, natural hazard risk assessment, to name only a few. It has been a long history of using photogrammetry and dense ground surveys to draw the contour lines of the terrain and create the elevation model. Nowadays high precision DEMs with the vertical resoluti...

1 ABSTRACT A coherent laser radar system based on semiconductor laser technology has been designed and built. The compact design and the absence of adjustments makes the system mechanically robust and easy to use. The present system has an output power of 50 mW and a line width of 280 kHz (HWHM). The laser radar system has been used in vibrometry measurements. For vibrometry of moving objects, ...