Mine PV survey Company in Navi Mumbai, Maharashtra |It used to calculate the volume of stockpiled materials such as ore, coal, or overburden.

Step‑by‑step workflow

1. Plan the survey:

• Define the target piles, legal/permission constraints, restricted zones, and required accuracy (typical target: ±0.5–2% for inventory).

2. Select equipment and software:

• UAV with a good RGB camera (20 MP+ recommended) or LiDAR for vegetation/complex surfaces.

• Photogrammetry software: Pix4D, DroneDeploy, Agisoft Metashape, or similar.

3. Establish control:

• Place and survey Ground Control Points (GCPs) evenly around and between piles using RTK/PPK or total station to achieve horizontal and vertical accuracy.

4. Flight execution:

• Fly planned grid and oblique passes to capture full pile geometry, 70–85% forward overlap and 60–80% side overlap, altitude chosen to get required GSD.

• Capture nadir and oblique images for steep slopes; fly additional low-altitude passes if detail is critical.

5. Process imagery:

• Align images, build dense point cloud, generate DSM/DTM, create orthomosaic, and produce 3D mesh.

• Apply GCPs to georeference and refine the model.

6. Volume calculation:

• Define base surface for each pile: draw base polygon on orthomosaic or use surveyed toe elevations. compute volume above base (stockpile) and, if needed, below base (excavation).

7. Quality control:

• Check absolute accuracy against independent check points, review residuals on GCPs. inspect point cloud density and model holes, and run repeatability checks if multiple surveys exist.

8. Reporting:

• Provide tabulated volumes per pile, change detection compared to previous date. uncertainty/accuracy statement, annotated maps, cross-sections, and downloadable models.