The Study on Retrieval Algorithm of Spaceborne Dual-Frequency Cloud Radar | IEEE Conference Publication | IEEE Xplore

The Study on Retrieval Algorithm of Spaceborne Dual-Frequency Cloud Radar


Abstract:

Based on the data simulated by satellite radar simulator unit, two frequencies have been chosen and dual-frequency retrieval algorithm of cloud microwave parameters has b...Show More

Abstract:

Based on the data simulated by satellite radar simulator unit, two frequencies have been chosen and dual-frequency retrieval algorithm of cloud microwave parameters has been studied. Results suggest that: (1) 94/220GHz is sensitive to the tiny change of drop size parameter and a large frequency difference is advantage to the parameter retrieval. So, 94/220GHz can be chosen as the detection frequency of space borne cloud radar in the future after the consideration of detective ability, attenuation and manufacturing level in the industrial sector. (2) The relationship between dual wavelength ratio and median volume diameter rely on the particle density. DWR always increases with D0 if particle density changes with the diameter. By contrast, DWR will fluctuate with D0 when particle density is a constant. So the retrieval of a constant density is very difficult. (3) Backward iteration retrieval algorithm of dual frequency can be applied by 94/220GHz and the retrieval results are coincident with the true value. What's more, the precision of retrieval is influenced by system noise and calibration precision. So, the noise and calibration precision should be controlled under 1dBZ in order to satisfy the retrieval precision need.
Date of Conference: 22-27 July 2018
Date Added to IEEE Xplore: 04 November 2018
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Conference Location: Valencia, Spain

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