Microwave radiometers (MWR) are radiometers that measures sub-mm-to-cm wavelength energy emissions. Microwave radiometers measures various factors such as humidity, rain, temperature, and other environmental factors on near earth surface. The different space exploration measurements can also be achieved with the help of microwave radiometers. Owing to huge importance of microwave radio frequency measurements, microwave radiometer finds it applications in measuring atmospheric and terrestrial radiations onboard spacecraft, meteorological observations, numerical weather prediction (NWP), forecasting, now-casting, climate monitoring, aviation meteorology, astronomy, geodesy, satellite tracking, cloud observation, and oceanographic remote-sensing. The report analyzes the market of microwave radiometers by different types – unpolarised radiometers and dual polarised radiometers. The report gives special focus on sub-segments of each of the types of radiometers – unpolarised radiometer...