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Surveying & Mapping

Redefining Accuracy from the Sky Down

At GSC, precision is the foundation of everything we deliver. Through advanced aerial surveying and mapping solutions, we capture, process, and visualize the earth’s surface with an unmatched level of detail and reliability.

Using cutting-edge drones and manned aircraft, our teams conduct topographical surveys that set new benchmarks in data quality and operational efficiency. From large-scale terrains to intricate project sites, our technology delivers results with ±2 cm accuracy in X and Y, and ±5 cm in Z, ensuring that every measurement is dependable and every map tells the full story of the landscape.

Aerial Data Acquisition Fleet

  • VTOL Drones – Ideal for covering large areas efficiently while maintaining exceptional accuracy.
  • Multirotor Drones – Perfect for detailed data collection in confined or complex environments.
  • High-Accuracy Sensors – Capture precise geospatial data for mapping, modeling, and measurement.
  • Aircraft & Helicopters – Extend our range for expansive regional mapping and long-distance missions.

Project Outputs

Our aerial orthophotos deliver crisp, ortho-rectified imagery with exceptional detail — achieving 2.0 cm/pixel resolution, nearly 10 times higher than typical satellite imagery. Every image is pre-sorted, color-balanced, and sharpened to produce vivid, high-contrast visuals that support accurate measurement and analysis.

The DSM provides an exact representation of the earth’s first visible surface — including terrain, vegetation, and man-made structures. These models are essential for 3D visualization, topographic analysis, and location-based simulations, helping clients better understand site characteristics and elevation variations.

Our DTMs are processed at maximum precision, offering multiple resolution outputs — down to 1m cell size. These models integrate seamlessly with industry-standard platforms including ESRI ArcGIS, Cesium, AutoCAD, and MicroStation, supporting a wide range of engineering and geospatial applications.

Our architectural and CAD teams translate aerial data into detailed 2D master plan drawings, complete with contours, spot elevations, boundaries, and ground control points (GCPs). Visible surface elements — such as light poles, trees, buildings, and manholes — are accurately traced to create a precise, data-rich base map.

Derived from high-resolution DTM data, our contour maps elegantly visualize topographic variations — from gentle slopes to deep depressions. When combined with orthophotos or DSM data, they provide a powerful tool for terrain analysis, site design, and visual exploration.

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We produce photorealistic, geo-referenced 3D mesh models with exceptional detail and texture accuracy. Delivered as .OBJ and .MTL files generated via Pix4D, these models offer immersive visualization ideal for design reviews, simulation, and digital twin applications.

We generate high-density, true-color point clouds in LAS format, providing engineers and designers with precise 3D spatial data for measurement, modeling, and advanced analysis.

Each project concludes with a comprehensive Aerial and Land Survey Report, documenting all methodologies, QA/QC processes, equipment specifications, data accuracy, and coordinate system details. These reports provide full transparency and traceability — reinforcing the reliability and integrity of every dataset we deliver.