Method for automatically recognizing shear line
A technology of automatic identification and shearing, applied in the field of meteorology
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[0069] The shear line is a narrow and long area where the wind direction changes sharply, and the horizontal cyclonicity of the wind direction changes greatly, so the shear line is located according to the wind field. The wind is a two-dimensional vector on a certain height plane, and the results of the two-dimensional vector cross product are used to judge and screen possible shears, and finally connect the shears to form a shear line to achieve the purpose of locating the shear line. Vector cross product is also called vector product. In mathematics, it is also called outer product and cross product. In physics, it is called vector product and cross product. It is a binary operation of vectors in vector space. Suppose there are two three-dimensional vectors a and b, then a×b is:
[0070]
[0071] Among them, i, j, and k are the unit direction vectors of the x-axis, y-axis, and z-axis respectively, and the subscripts of the a and b vectors represent their horizontal compon...
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