前言从一个地方同时观测分布在广阔大气空间中的污染物质浓度的方法,通常是利用有线、无线方式,把设在宽广地区的许多传感器中的数据,传送到遥测系统中进行检测。但是,这种方法的缺点是不能连续测量空间的分布状态。更好的方法是在同一地点以电磁波为“探测器”,远距离连续测量空间的分布状态,这就是雷达。微波雷达已被广泛应用于航空、航海和气象领域巾。现在又出现了使用波长短4～5个数量级、方向性也更强的激光雷达。由于激光波长短,方向性好,故在空间具有高测量精度,能检测大气中浮游的颗粒状物质。又因为激光属于分子、原了吸收的 Preface The simultaneous observation of concentrations of pollutants distributed in a wide range of airspace from one place, usually using wired or wireless means, transmits data from many sensors located in a wide area to the telemetry system for detection. However, the disadvantage of this method is that the spatial distribution can not be measured continuously. A better method is to use the electromagnetic wave as a “detector” at the same place and measure the distribution of the space over long distances. This is the radar. Microwave radar has been widely used in aviation, marine and meteorological areas. Now there has been the use of short wavelength 4 to 5 orders of magnitude, more directional laser radar. As the laser wavelength is short, good direction, it has high measurement accuracy in space, able to detect particulate matter floating in the atmosphere. And because the laser belongs to the molecule, the original absorbed