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微波遥感器具有全天时、全天侯、一定穿透能力和能取得被测目标特征信息的特点,所以受到国内外遥感界的重视。现在,可见光、红外光遥感器比较成熟,而微波遥感器正处在研究、开发、推向应用阶段。其发展趋势表明,徽波遥感器所占比例会越来越大。微波遥感器有被动式和主动式两大类。接收地物微波辐射能量的微波辐射计属被动式的。本身向外发射探测信号的高度计、散射计、侧视雷达和全息雷达属于主动式的。本文对微波遥感器作一简单介绍,并对微波遥感器今后的发展方向提出一些粗浅看法。一、微波辐射计微波辐射计是一台特殊微波接收机。它由天线、外差接收机、消除本机噪声和增益波动部分,数据记录或存贮装置等部分组成。微波辐射计天线接收地物的辐射功率比接收机的
Microwave remote sensor with all-day, all-weather, a certain penetration ability and can obtain the characteristics of the measured target features, so by the remote sensing community at home and abroad attention. Now, visible light, infrared light sensor is more mature, and microwave remote sensor is in research, development, to the application stage. Its development trend shows that the proportion of remote sensing Huibo will be larger and larger. Microwave remote sensor has two major categories of passive and active. The microwave radiation that receives the microwave radiation energy of the ground object is passive. Altimeter, scatterometer, side-looking radar and holographic radar, which themselves emit detection signals, are active. This article makes a brief introduction of the microwave remote sensor, and puts forward some superficial opinions on the future development of the microwave remote sensor. First, the microwave radiometer microwave radiometer is a special microwave receiver. It consists of antenna, heterodyne receiver, to eliminate local noise and gain fluctuations part, data recording or storage devices and other components. The microwave radiometer antenna receives the radiated power of the ground object than the receiver