Services — TerraSight

Service 01

LiDAR Surveys

Full Guide: Drone LiDAR Surveying in St. Louis →

LiDAR (Light Detection and Ranging) uses rapid laser pulses to measure distance and generate dense, high-resolution 3D point clouds of any terrain. Unlike photogrammetry, LiDAR penetrates vegetation canopy to capture true ground surface data — making it the industry standard for precision surveying in forested, complex, or difficult terrain.

TerraSight operates DJI L-series LiDAR systems capable of capturing up to 240,000 points per second with ±3 cm vertical accuracy — delivering data that engineers, surveyors, and mining operators can rely on for critical decisions.

Common Applications

Bare earth terrain modeling beneath dense vegetation
High-accuracy topographic surveys for engineering
Mining site mapping and stockpile analysis
Floodplain and watershed modeling
Corridor mapping for pipelines and transmission lines
Construction site baselines and progress monitoring

Deliverables Included

Classified Point Cloud (.LAS / .LAZ) Digital Terrain Model (DTM) Digital Surface Model (DSM) Digital Elevation Model (DEM) Contour Lines Cross-Section Profiles Intensity Maps Project Report

Technical Specs

Sensor	DJI L-Series
Accuracy	±3 cm vertical
Point Density	Up to 240K pts/sec
Penetration	Multi-Return
Coverage	Large-area capable

Sample Outputs

What You Receive

The following are representative examples of LiDAR point cloud data and terrain models — the type of deliverable TerraSight produces for every project.

Service 02

Photogrammetry

Full Guide: Aerial Mapping & Orthomosaics in St. Louis →

Photogrammetry uses overlapping aerial photographs to reconstruct accurate 2D maps and 3D models of real-world environments. By analyzing the geometry of hundreds to thousands of images, our processing software produces georeferenced orthomosaics and 3D mesh models with survey-grade accuracy.

This method is ideal for large-area mapping, construction site documentation, and any application requiring both visual context and accurate spatial data.

Common Applications

Construction site progress documentation
Large-area orthomosaic mapping
As-built 3D site models
Land development and parcel mapping
Visual presentations and client reporting
Infrastructure inspection and documentation

Deliverables Included

2D Orthomosaic (.TIFF / .JPG) 3D Mesh Model Dense Point Cloud Digital Surface Model Textured 3D Model Ground Control Report KMZ / KML Export Project Report

Output Formats

Maps	GeoTIFF, JPG, ECW
Models	OBJ, FBX, PLY
Point Cloud	LAS, LAZ, XYZ
Compatible With	ArcGIS, AutoCAD, Civil 3D

Drone photogrammetry vs satellite — Boulder Reef, Utah — Satellite (left) vs TerraSight Drone (right) · Sample

TerraSight drone photogrammetry — Boulder Reef canopy — TerraSight Drone (left) vs Satellite (right) · Sample

Service 03

Thermal & Multispectral

Full Guide: Thermal Drone Inspections in St. Louis →

Thermal and multispectral imaging captures data beyond the visible spectrum — revealing heat signatures, moisture variations, vegetation health, and surface anomalies invisible to standard cameras.

TerraSight deploys thermal and multispectral sensor payloads for applications ranging from agricultural crop health analysis to industrial inspection and gas leak detection.

Common Applications

Crop health and NDVI vegetation analysis
Solar panel defect and hotspot detection
Gas leak and pipeline anomaly detection
Roof and building envelope inspection
Irrigation mapping and drainage analysis
Industrial facility thermal monitoring

Deliverables Included

Thermal Orthomosaic NDVI Index Map Multispectral Composite Anomaly / Hotspot Report Radiometric Data Export GeoTIFF Layers Actionable Summary Report

Thermal drone imaging — power line inspection — Thermal Imaging · Sample Output

Multispectral drone imaging — crop health analysis — Multispectral NDVI · Sample Output

Service 04

Volumetric Measurements

Full Guide: Stockpile Volume Measurement in St. Louis →

Accurate volume measurement is critical in mining, construction, and earthwork — and traditional ground-based methods are time-consuming, expensive, and often unsafe. TerraSight delivers precise stockpile volumes, cut/fill calculations, and earthwork quantity reports using drone-based LiDAR and photogrammetry data.

Our volumetric surveys can be completed in hours rather than days, with results accurate enough to replace conventional survey methods for most applications.

Common Applications

Mining stockpile volume calculation
Aggregate and material inventory
Cut/fill earthwork quantity reporting
Landfill volume tracking
Construction progress billing
Baseline and change-over-time analysis

Deliverables Included

Volume Calculation Report Cut / Fill Analysis Site DEM / DSM Stockpile Boundaries Before / After Comparison AutoCAD Compatible Export Summary PDF Report

Aerial stockpile volumetric measurement — Stockpile Aerial Survey · Sample Output

Service 05

Topographic Mapping

Full Guide: Topographic Mapping in St. Louis →

TerraSight produces high-accuracy topographic maps and terrain models using drone-based LiDAR and photogrammetry — faster, safer, and more cost-effective than traditional ground survey methods.

Our topographic deliverables are compatible with all major engineering and GIS platforms, and meet the accuracy standards required for planning, permitting, and civil design.

Common Applications

Site planning and civil design
Grading and drainage design
Permit and regulatory submissions
Resource development planning
Environmental baseline mapping
Road and infrastructure design

Deliverables Included

Topographic Contour Map Digital Elevation Model Slope & Aspect Analysis Cross-Section Profiles AutoCAD DWG Export ArcGIS Shapefile Survey Report

Digital Elevation Model — drone topographic survey — Digital Elevation Model (DEM) · Sample Output

Topographic contour map — drone survey — Topographic Contour Map · Sample Output

Service 06

Digital Twins & 3D Models

A digital twin is a precise, data-accurate 3D replica of a real-world site — updated over time to reflect actual conditions. TerraSight produces digital twins from drone-captured LiDAR and photogrammetry data for construction sites, industrial facilities, mining operations, and infrastructure projects.

Digital twins enable remote inspections, stakeholder presentations, design validation, and progress tracking — reducing the need for costly site visits while improving decision-making.

Common Applications

Construction progress tracking and reporting
Remote site inspection and virtual walkthroughs
As-built documentation and verification
Stakeholder and client presentations
Design and engineering validation
Facility asset management

Deliverables Included

3D Textured Mesh Model Interactive 3D Viewer Point Cloud (.LAS / .LAZ) OBJ / FBX Model Export Georeferenced Orthomosaic Progress Comparison Set Project Documentation

3D mesh model — DJI Terra digital twin — 3D Mesh Model · Sample Output

RGB point cloud — DJI Terra digital twin — RGB Point Cloud · Sample Output

Service 07

Hyperspectral Imaging

Hyperspectral imaging captures hundreds of narrow, contiguous spectral bands for every pixel — far beyond standard RGB or multispectral sensors. Because minerals reflect light in unique spectral signatures, hyperspectral data makes it possible to identify and map surface mineralogy from the air, across entire project areas, before a single hole is drilled.

Built for mineral exploration and mining, TerraSight's hyperspectral service maps alteration minerals, iron oxides, clays, and carbonates — the surface indicators geologists use to locate and prioritize drill targets. The result: exploration programs that are faster, cheaper, and significantly de-risked.

Common Applications

Surface mineral and alteration zone mapping
Drill target identification and prioritization
Iron oxide, clay, and carbonate indicator mapping
Lithological and geological boundary delineation
Tailings and waste rock composition monitoring
Acid mine drainage and environmental compliance monitoring

Deliverables Included

Mineral Classification Map Alteration Zone Map Spectral Index Layers (GeoTIFF) Georeferenced Reflectance Data Exploration Targeting Report GIS-Ready Layers (ArcGIS / QGIS) Project Summary Report

Why It Matters for Mining

Spectral Bands	Hundreds (vs. 3 for RGB)
Detects	Mineral spectral signatures
Coverage	Entire property, from the air
Value	De-risked drill programs

Hyperspectral mineral mapping — surface mineralogy classification — Hyperspectral Mineral Mapping · Sample Output

Service Guides

Local Service Guides

In-depth guides to every TerraSight service across the St. Louis metro, St. Charles County, and Southern Illinois — deliverables, workflows, and answers to common questions.

Drone LiDAR Surveying → Topographic Mapping & Contours → Thermal & Infrared Inspections → Photogrammetry & Orthomosaics → Stockpile Volume Measurement → Construction Progress Monitoring → Agriculture & Multispectral Imaging → Mining & Exploration Mapping →

Our Services

LiDAR Surveys

Photogrammetry

Thermal & Multispectral

Volumetric Measurements

Topographic Mapping

Digital Twins & 3D Models

Hyperspectral Imaging

Local Service Guides