Building Inspections Technical Data
Advanced Drone Technology - Extreme Delivery
Our advanced drones achieve exceptional accuracy and detail in building inspections, creating comprehensive digital twins with greater efficiency than traditional methods. This report highlights precision metrics, workflows, and advantages of UAV Surveys' inspection service.
Unparalleled Accuracy
Our drones deliver precision through low Ground Sample Distance (GSD), enabling detailed inspections of building façades and structural elements.
| Flight Distance (m) | GSD (cm/pixel) | Horizontal Accuracy w/o RTK (cm) | Vertical Accuracy w/o RTK (cm) | Horizontal Accuracy w/ RTK (cm) | Vertical Accuracy w/ RTK (cm) |
|---|---|---|---|---|---|
| 3 | 0.0410 | 0.04-0.08 | 0.08-0.12 | 0.02-0.04 | 0.04-0.06 |
| 5 | 0.0684 | 0.07-0.14 | 0.14-0.21 | 0.03-0.07 | 0.07-0.10 |
| 8 | 0.1094 | 0.11-0.22 | 0.22-0.33 | 0.05-0.11 | 0.11-0.16 |
| 10 | 0.1367 | 0.14-0.27 | 0.27-0.41 | 0.07-0.14 | 0.14-0.21 |
Calculate GSD Live
GSD: 0.0410 cm/pixel at 3m
Accuracy is based on photogrammetry principles:
- Horizontal: 1-2× GSD
- Vertical: 2-3× GSD
- RTK improves precision by ~50%
At 3m, inspections achieve 0.2-0.4mm precision with RTK, detecting even the smallest defects.
RTK Workflow Integration
Our advanced drones use RTK for survey-grade accuracy, with flexible workflows tailored to project needs:
1. Ultra-High Precision
- RTK with Ground Control Points and checkpoints
- Sub-centimetre accuracy
- Ideal for critical assessments
2. Efficient High Precision
- RTK with a single calibration point
- High accuracy with efficiency
3. RTK-Only
- Streamlined with no ground markers
- Excellent relative accuracy
Custom base stations ensure consistent precision in remote areas.
Mission Planning Excellence
We use advanced mission planning software to ensure complete coverage and consistent image overlap:
1. Initial Assessment
- Overhead flight for site context
- Rough 3D model creation
2. Detailed Planning
- 70% minimum image overlap
- Optimal camera angles
3. Execution
- Automated flights with supervision
- Real-time quality monitoring
Comparative Advantages
Our drone-based inspections offer significant benefits over traditional methods:
| Inspection Method | Typical Setup Time | Cost for Medium Building | Safety Risk Level | Data Capture Completeness | Delivery Timeframe |
|---|---|---|---|---|---|
| UAV Surveys Drone Inspection | 0.5 days | £1,900 | Minimal | 100% with measurable data | 2 days |
| Scaffolding | 2.5+ days | £7,500+ | High | Limited to accessible areas | 30+ days |
| Cherry Pickers/MEWPs | 1-2 days | £3,500+ | Medium | Limited by reach | 7+ days |
| Industrial Rope Access | 1-2 days | £4,000+ | Very High | Variable coverage | 5+ days |
Our drones eliminate height-related risks and provide full coverage at a fraction of the cost.
Digital Twin Creation
1. Image Processing
- Geotagged image alignment
- Dense point clouds
2. Model Enhancement
- Thermal imaging integration
- Quality verification
3. Deliverables
- 3D models
- Orthomosaic images
Data is delivered via our secure DragoneyeDigital platform with immersive 3D tools.
Conclusion
UAV Surveys offers superior data quality, comprehensive coverage, and enhanced safety at 80% lower cost than traditional methods.
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Contact Information
- E-mail : info@uavsurveys.info
- Phone : +44 (0) 203 920 7560
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