The determination of land area in the process of industrial and agricultural development is a common problem. There are many methods for calculating the area of ​​the plane figure in mathematics, such as the cut-and-fill method and the integral method, but it is not convenient to apply some methods to reality. Nowadays, there is a farmland area measuring instrument on the market, and the measuring area is fast and convenient. It is a combination of global positioning technology, electronic technology and mathematical technology. Scan WeChat to learn more about cutting-edge information: (1) We promised to delivery on time,if any delay we'll bear the air freight.
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In practical work, the flat area of ​​the land area sought can always be seen as a polygon. When the surveyor walks around the zone boundary with the GPS for a week, the vertices of each vertex can be obtained. The acquired vertex coordinate data is input to the computer, and then the computer can calculate the area of ​​the desired area according to the formula (*). However, the coordinates measured by GPS will have a 2m error in the normal situation. If manual or mechanical establishment of a Cartesian coordinate system, the acquisition of rectangular vertices of the vertices is quite troublesome, then the formula is meaningless.
Use the above procedure to calculate the area as small as the size of a house to a vast field and pasture. If it is possible to automatically obtain the long side distances and deflection angles of the polygons, a new type of measurement instrument can be designed that is different from the use of farmland area. The surveyor can carry the instrument around the area for a week to obtain the area. 