Design and development for a fine spectral microwave radiometer

The project will develop a prototype of dual-band multi-channel radiometer with fine spectrum, with working frequencies 50–70 GHz of oxygen absorption lines and 183.31GHz of water vapor absorption lines. The spectral resolution values are 20 MHz and 50 MHz, respectively, and the channel sensitivities are better than 0.5 K. Meanwhile, related key techniques are introduced to illustrate how to realize the system which can meet all the design specifications And also, preliminary results are provided to validate the advantages of the advanced system.