Recently, the first set of vacuum calibration equipment for spaceborne all-polarimetric microwave radiometers has been successfully developed. The device will ensure accurate and effective measurement results of all-polarimetric radiometers and provide reliable source-proof means and technical support for its detection, achieving international traceability Chain for value traceability. The vacuum calibration device for spaceborne full-polarized microwave radiometer was developed by 203 of China Academy of Aerospace Science and Industry. The device has the features of fully automatic and high precision, and has reached the international advanced level in terms of calibration accuracy and technical indicators. It is reported that the traditional microwave radiometer, the wind speed can measure the sea, but can not accurately determine the wind direction. With the application of the fully polarized microwave radiometer, it can not only measure the wind speed and wind direction, but also get the parameters of atmospheric cloud water content, water vapor content and sea surface temperature, which are the former microwave radiometer, scattering The meter does not have the characteristics of measuring the sea surface wind field. 203 is the only one capable of developing and owning a vacuum calibration source for spaceborne microwave radiometers. It is also the only unit that can provide ground vacuum calibration tests for spaceborne microwave radiometers. The device consists of a combination of polarization grid, phase delay plate, mechanical rotation mechanism and other organic combinations to establish and perfect the calibration traceability chain of the fully-polarized radiometer in passive remote sensing. Self-developed ultra-fine wire mesh, automatic control, based on the minimum number of spectral calibration algorithm to select the optimal combination of output temperature and other technical methods are the first time in China, the device access to a national invention patents, utility model patents Many. Its self-developed large-diameter high-performance metal polarization grid, the working frequency range up to 500GHz, more than double the domestic metal grid operating frequency band, the application of the band to the terahertz band, and can provide customized products, Delivered to customers, customers respond well, which not only provides a reliable technical support for all-polarization microwave radiometer detection, but also as a quasi-optical devices used in millimeter-wave, terahertz light system. Plastic Fruit Box Making Machines
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