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The topographic effect on land surface reflectance is an important factor affecting quantitative analysis of remotely sensed data in mountainous regions. Different approaches have been developed to reduce topographical effects. Of the many methods, the Minnaert correction method is most frequently used for topographic correction, but a single global(More)
To improve the vibration and noise measurements of hypoid gear, the generation mechanism of gear noise is analyzed, one use of PCI multi-channel simultaneous acquisition card within FPGA interface to gear parametric measuring is proposed, and the intelligence and flexibility of the hardware is accomplished by way of MCU extended. Finally, the prototyped PCI(More)
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