葡萄牙科学家最近用一台简单的激光雷达系统演示了早期探测森林小火的情况,他们已可靠地辨认出了位于6.5km以外处的森林火灾。 由于激光雷达是一种主动式技术,它探测的是烟雾而不是火,所以与用于火灾探测的被动方法比较起来,它具有许多优点。常规的火灾探测方法包括从星载系统或其它机载系统上进行红外成像。这种系统必须具有视线,而激光雷达则不存在这个问题。 森林小火是用燃烧速率定义的,而不是用烟团的大小定义的。森林小火的燃烧速率一般为0.02kg- The Portuguese scientists recently demonstrated the early detection of small forest fires with a simple Lidar system, and they have reliably identified a forest fire at a distance of 6.5km. Since lidar is an active technology that detects smoke rather than fire, it has many advantages over passive methods used for fire detection. Conventional fire detection methods include infrared imaging from on-board systems or other on-board systems. This system must have line of sight, while Lidar does not have this problem. Small forest fires are defined by the rate of burning, not by the size of the puff. The burning rate of forest fire is generally 0.02kg-