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海洋风场是海洋与大气作用的重要参数之一。全极化微波辐射计是一种新型的微波遥感器。数字全极化微波辐射计采用多路数字相关技术,对水平和垂直极化信号进行相关处理,产生反演海面风场模型所需海面亮温Stokes矢量。详细介绍了数字全极化微波辐射计的系统设计方法,包括射频前端、中频段和数字相关器的设计。同时给出了系统内定标以及外定标方法。对数字全极化微波辐射计做了细致的理论分析和硬件实现设计。
Marine wind field is one of the important parameters of ocean and atmosphere. Fully polarized microwave radiometer is a new type of microwave remote sensor. The digital fully-polarized microwave radiometer uses multiple digital correlation techniques to correlate the horizontal and vertical polarization signals to produce the Stokes vector of the sea surface brightness required for inversion of the sea surface wind field model. The system design method of digital fully-polarized microwave radiometer is introduced in detail, including the design of RF front-end, mid-band and digital correlator. At the same time, the system calibration and external calibration methods are given. Digital fully polarized microwave radiometer made a detailed theoretical analysis and hardware design.