GPS acre measurement instrument working principle GPS acre measurement instrument by high-precision GPS positioning system, precise area calculation method, realizing any irregular area of ​​real-time testing, dynamic graphic display and data intelligent processing and storage. Applicable to the measurement of areas such as farmland, green areas, forests, water areas, hillsides, etc. One measurement can simultaneously obtain data such as measurement area, perimeter, distance, slope, etc. The measured area graph and all measurement data can be recalled at any time for easy file retention. It is a convenient measurement tool for agricultural, forestry, water conservancy, soil management, and agricultural operations.
The GPS global acre system used by the GPS acre measurement instrument can provide real-time navigation and positioning information such as longitude, latitude, elevation, etc. The positioning function of the GPS can be used to obtain the coordinates of each point, and the distance, area and other data can be calculated by mathematical methods. .
Since the earth is an ellipsoid, in order to accurately calculate the distance or area, it is generally converted into planar coordinates by means of projection. In China, Gaussian-Kriging projection is usually used to convert large-scale maps. However, the projection method is very complex and difficult to implement in single-chip microcomputers. To simplify the calculation, we consider the earth as a true sphere. Take the radius of the earth is 6371116m, you can convert it into plane coordinates:
Where: R is the radius of the Earth, x is the longitude/m, and y is the latitude/m. Then at the Y longitude of the Earth's surface, the square area where the longitude difference and the latitude difference are one degree each is:
Big size carbon steel Plasma Cutter Machine
1) High precision CNC Plasma Cutting Machine is widely used in cutting letters and drawings of industries manufacturing and advertising filed.
2) Reliable driving system which requires no maintenance. Rigid welded metal structure, high precision gantry, X Y Z axis use Taiwan HIWIN square rail guide and high precision rack gear driving system to ensure the rapid working speed and high accuracy.
3) Clean and smooth cutting edge, do not need further processing.
4) Wholly cold-roll machine structure, this increase rigidity and eliminates vibration during working.
Big Size Plasma Cutting Machine
CNC Plasma Cutter Machine,Plasma Metal Cutter,Industrial Plasma Cutter,Big Size Plasma Cutting Machine
Jinan Vmade CNC Machine Co.,Ltd , http://www.vmadecnc.com