Abstract
Enhancing the operational capability of current sensors and radar systems to detect targets at long ranges and map the terrain in all kinds of weather is a well-accepted measure. Multi-target tracking would require multi-beam, multi-band scanning phased array antennas. Therefore, in order to meet the current challenges, current sensor systems and radar systems must be expanded and strengthened to support the ever-increasing military requirements. Phased array antennas have emerged as the most viable solution for these important applications that include surveillance, tracking targets on the ground and for high-resolution ground mapping when operating at a sufficient altitude. Active phased array radar uses an advanced antenna system that not only employs electronic phase shifters to provide beam steering, but also contains solid-state RF amplifiers and low noise amplifiers for signal reception. Such phased array radar systems provide an excellent alternative to conventional radar systems on unmanned airborne vehicles (UAVs) or other air-platforms for surveillance and reconnaissance. In addition, the active array radar system offers advantages in the areas of power management and efficiency, reliability, signal reception, beam steering target detection and system performance.
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