由于LPI雷达具有大时间带宽积，故超宽带雷达具有高处理增益而抵消侦察接收机在侦察距离上的优势。
Because of the LPI radar's large time-bandwidth product, UWB radar has a high processing gain to cancel the advantage of the intelligence receiver at intercept range.
拥有115英寸长翼展的全球鹰能够在六万英尺的高空(也就是距离地面18公里)连续执行36小时侦察行动。
The Global Hawk, with a 115-foot wingspan, is capable of conducting surveillance for 36 hours at a stretch at altitudes of up to 60,000 feet (18 kilometers).
通过对比研究激光对漫反射大目标、小目标和“猫眼”光学镜头的回波信号，给出激光主动侦察原理：对目标的距离测量应用脉冲激光测距原理实现；
Theprinciples of the laser active reconnaissance are explained via the comparison of the echo signal. target ranging isrealized by adopting the principle the pulse laser ranging.
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