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This paper proposes a novel diving plane control scheme for autonomous underwater vehicle (AUV) based on tracking differentiator (TD) and cascade control (CC). The outer loop controller and inner loop controller adopt PI and P, respectively. Firstly, the mathematical model of AUV is established. The model consists of two parts: one is the depth model, and the other is the pitch model. Then, both controllers...
Natural color images are superior to false color images for presentation and visual interpretation purposes. They are widely used in the fields of fly-through of a draped terrain, visual interpretation, and display and have been designed, for example, for nonremote sensing professional users. However, each sensor has its own purpose, application, and limitation. In addition, blue wavelengths suffer...
Land use change is a major issue in global environment change and is especially significant in rapidly developing urban regions of China was being witnessed. With its economic development, population growth, and urbanization in Chengdu, capital of the western province of Sichuan, China, have experienced a dramatic land use change over the past 30 years. Assessment on urban land use change is essential...
Soil erosion is becoming more and more serious worldwide in recent decades, and remains a major threat to terrestrial ecosystem and global sustainable development. The loss of topsoil through erosion results in a significant loss in productivity. The subsoil remains is likely to be incapable of supporting viable agricultural enterprises. Runoff from eroding landscapes contains sediment and any nutrients,...
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