The main difference between plane survey and geodetic survey is that plane survey does not consider the curvature of the earth whereas geodetic survey does consider the curvature of the earth.
Plane surveying is a type of surveying that involves the use of linear and angular measurements in a two-dimensional plane to determine the position of points, lines, and other features on the earth’s surface. It is typically used for relatively small-scale projects, such as construction and engineering projects, and is based on the assumption that the earth is a flat plane.
Geodetic surveying, on the other hand, is a type of surveying that involves the use of precise three-dimensional measurements to determine the position and orientation of points on the earth’s surface. It is typically used for large-scale projects, such as mapping and land surveying, and is based on the actual shape of the earth, which is an ellipsoid.
Here is a table summarizing the main differences between plane surveying and geodetic surveying:
| Plane Surveying | Geodetic Surveying | |
|---|---|---|
| Dimension | 2D | 3D |
| Area of application | Small-scale projects, such as construction and engineering | Large-scale projects, such as mapping and land surveying |
| Assumptions about the earth | Assumes the earth is a flat plane | Takes into account the actual shape of the earth, which is an ellipsoid |
| Measurement precision | Moderate | High |
| Types of measurements | Linear and angular measurements in a two-dimensional plane | Precise three-dimensional measurements |
| Equipment used | Surveyor’s level, theodolite, total station, etc. | GPS receivers, precise leveling instruments, etc. |
| Advantages | Lower cost, simpler equipment, faster data collection | Higher precision, ability to measure large areas accurately |
| Disadvantages | Limited accuracy, cannot be used for large-scale projects | More expensive, requires specialized equipment and expertise |
These were the major differences between plane surveying and geodetic surveying. I tried to explain in a simple way. I hope you liked this article.
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