Fundamentals Of Surveying2D
Hydrographic Surveying - Theory & Concepts - Three Point Resection
Techniques for measuring water depth, discharge, tides, and currents.
Open the complete lessonThree-Point Resection Simulator
Determine the position of an unknown station (O) by observing three known points (A, B, C).
Resection Principle
By setting up an instrument at unknown Station O and measuring the horizontal angles to three known control points (A, B, C), the coordinates of Station O can be calculated.
*Note: This simulation provides a schematic visual representation of the concept. Real coordinate computation involves complex trigonometric formulas (e.g., Collins Point Method or Tienstra's Method).*