分类: 地球科学 >> 空间物理学 提交时间: 2016-05-03
摘要: Sea surface salinity as an ocean variable plays an important role in various components of the water and energy cycle. Recently a Chinese space mission using a new concept of Microwave Imager Combined Active and Passive (MICAP) at L-band is proposed for the ocean salinity measurement. MICAP uses interferometric techniques for both the radiometer and the scatterometer, which adopt two kinds of linear array feeds sharing one 3x4.5 m parabolic cylinder reflector. This paper is focused on the microwave interferometric radiometer (MIR) aboard the MICAP, and discusses the imaging simulation, imaging algorithm, and instrument performance.
分类: 地球科学 >> 空间物理学 提交时间: 2016-05-03
摘要: Sea surface salinity (SSS) plays an important role in global water cycle. In recent years, satellite based remote sensing has proven to be a promising approach for global SSS observation. A new payload concept, named MICAP (microwave imager combined active and passive), has been introduced in this paper. MICAP is a suit of active/passive instrument package, which includes L/C/K band one-dimensional MIR (microwave interferometric radiometer) and L-band DBF (digital beamforming) scatterometer, sharing a parabolic cylinder reflector. MICAP has been selected to be a candidate payload for future Chinese ocean salinity mission. In this paper, the MICAP instrument concept, specification and preliminary system design will be introduced.