重大自然灾害常常导致路断桥塌,救灾人员难以在短时间内进入灾区,且定点查看也难全面了解灾情,这时就凸现出遥感的重要性。借助高高在上的卫星、飞机,俯瞰大地;使用雷达、微波、红外、可见光、紫外等多波段进行全天候观测,被测目标可一览无余。让我们看看汶川大地震中遥感看到了什么。 Major natural disasters often lead to the collapse of roads and bridges, relief workers are hard to enter the disaster area in a short period of time, and fixed-point view is difficult to fully understand the disaster, then highlight the importance of remote sensing. With the help of high-flying satellites and aircraft overlooking the earth, observe the weather with multi-bands such as radar, microwave, infrared, visible light and ultraviolet, and observe the target at a glance. Let’s take a look at what remote sensing has seen in the Wenchuan earthquake.