Many methods of measuring grain flow on combines are presented in the literature, such as volumetric method, impact sensor, radiometricmethod and capacitor sensor, etc.
关于谷物流量在线测量的研究方法，有光电、冲量法、核辐射及电容传感器等。
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This paper introduces the basic parameters of the satellite, the features of its products, the method to open the products with image processing software, and the radiometric calibration of RADARSAT.