Millimeter Wave Radiometer Remote Sensing Of Atmospheric Temperature Profiles Of The Study

The distributing and change of atmospherip temperature represent the important parameter of atmospheric state. Sensing the profile of atmospheric temperature is an important tool for the research to numerical weather forecast, atmospheric science and climatic variety. By way of using millimeter radiometer to sense the profile of atmospheric temperature, the paper researches the correlative technology. It includes the remote sensing theory of atmospheric temperature and a millimeter radiometer.Firstly, the paper discusses the transmit mode of atmospheric radiation; some pivotal parameters for remote sensing are analyzed and calculated, such as the absorption characteristic of oxygen molecular, atmospheric transmissivity and weight function. On the base, the paper selects the appropriate retrieval method.Secondly, the paper discusses the work principle, sensitivity, absolute measurement precision, calibrating technology of a millimeter radiometer. With remote sensing theory of atmospheric temperature, the paper analyses the select of channels, bandwidth, radiometer design and calibration of a millimeter radiometer, which is adapted to sense the atmospheric temperature.Finally, the paper analyses the relationship between millimeter radiometer's performance and remote sensing precision. It is educed that measurement precision, the short or damage of the channels of millimeter radiometer and retrieval figure can affect the remote sensing precision.