nowadays, in the modern wars, radars have faced with many threats. therefore, low probability of interception (lpi) capability is considered as an important factor in military radars. on the other hand, research on the interception of their signals is started and so far several methods are presented for detection of these signals. by using of time-frequency techniques, we can estimate signal pa...

Military forces operating in urban environments are facing numerous challenges. One of them consists in being able to identify buildings material to support missions involving tactical breach or blast damage prediction. This paper reports on a method that combines both LIDAR and through-wall radar imagery to provide detailed information about a building front wall features and its construction ...

Improvements in sensor capabilities have driven the need for automated sensor allocation and management systems. Such systems provide a penalty-free test environment and valuable input to human operators by offering candidate solutions. These abilities lead, in turn, to savings in manpower and time. Determining an optimal team of cooperating sensors for military operations is a challenging task...

Autonomous man-portable robots have the potential to provide a wide range of new capabilities for both military and civilian applications. Previous research in autonomy for small robots has focused on vision, LIDAR, and sonar sensors. While vision and LIDAR work well in clear weather, they are seriously impaired by rain, snow, fog, and smoke. Sonar can penetrate adverse weather, but has limited...

The progression of phased array weather observations, research, and planning over the past decade has led to significant advances in development efforts for future weather radar technologies. However, numerous challenges still remain for large-scale deployment. The eventual goal for phased array weather radar technology includes the use of active arrays, where each element would have its own tr...

W ith the advent of high-speed, high-resolution ana-log to digital converters (ADCs) and associated digital to analog converters (DACs), there is a growing push to move more functionality into the digital signal processing arena. Receiver processing that has been performed in the analog and radio frequency (RF) domains is performed digitally now, with improved performance (near ideal filters an...

llenges of aviation hazard monitoring have been widely and many technologies have been d (Mahapatra (1999)). The attention of this work on the on-board sensing capabilities rather than n remote weather information data-links. The oneather sensors, if operated properly, are able to igh-resolution, higher-data rate, and close-to-inasurements inside individual radar resolution . Therefore, on-boar...

Preamble This is the final report to Lockheed Martin on the requirements for a phased array weather radar. Discussed herein are those meteorological requirements that need to be met by weather radars having either reflector type antennas or active phased array elements. These requirements impact the design of the antenna, the transmitter-receiver, and signal processor. Justifications for these ...