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Drone GSD Comparison: Autel
GSD represents the distance between pixel centers measured on the ground and is a critical metric for aerial mapping, photogrammetry, and inspection applications.
Autel Robotics Drone Specifications
Autel Evo Max 4T
Core Specifications
Release Date:
January 2023
Flight Time:
42 minutes
Maximum Transmission Range:
12.4 miles
Transmission System:
SkyLink 3.0 with 6 antennas, 4 frequency bands
Weather Resistance:
IP43 rating
Obstacle Avoidance:
720° all-round perception and obstacle avoidance
Anti-Interference:
Advanced capability against RFI, EMI, and GPS spoofing
Camera System
Wide Camera:
50MP with 1/1.28" CMOS sensor, 85° field of view
Zoom Camera:
48MP with 8K resolution, 160x hybrid zoom capability
Thermal Camera:
640×512 resolution thermal sensor
Laser Rangefinder:
Range of 16.4 ft to 3,737 ft, accurate to 1 meter
Gimbal:
4-axis stabilized gimbal
Software & Intelligence
Autonomous Features:
Autel Autonomy Engine for 3D flight paths and obstacle avoidance
AI Recognition:
Target identification and tracking of heat sources, people, or vehicles
App Platform:
Autel Enterprise App with custom mission planning capabilities
Special Modes:
3D Map Planning, Mission Reproduction, Quick Mission features
Autel EVO II Dual 640T
Core Specifications
Release Date:
2020
Flight Time:
40 minutes
Maximum Transmission Range:
9 km
Maximum Speed:
20 m/s
Weight:
1136.5 g (2.51 lbs)
Obstacle Avoidance:
12-sensor omnidirectional system
Camera System
Visual Camera:
48MP with 1/2" CMOS sensor, 8K video capability
Thermal Camera:
640×512 resolution thermal sensor
Thermal Camera Specifications:
- Uncooled VOx Microbolometer
- 12 μm pixel pitch
- 13mm focal length
- FOV: H33°×V26°
- 1-8x zoom
- Temperature measurement capabilities
Software & Intelligence
Smart Tracking:
Deep learning algorithms for subject tracking with obstacle avoidance
Thermal Analysis:
IR PC TOOL software included for temperature measurement analysis
Thermal Display Modes:
10 thermal color palettes
Autel EVO II Pro 6K
Core Specifications
Release Date:
2020
Flight Time:
40 minutes
Maximum Transmission Range:
5.6 miles
Storage:
Built-in 8GB memory plus SD card slot
Weight:
1110 g (2.45 lbs)
Obstacle Avoidance:
12-sensor omnidirectional system with dual-core processor
Camera System
Sensor:
1-inch 20MP Sony sensor (Sony IMX383 CMOS)
Field of View:
79°
Aperture:
Adjustable, f/2.8 to f/11
Maximum Video Resolution:
6K (5472 × 3067)
Maximum Photo Resolution:
5472 × 3648 (20MP)
Zoom Capability:
1-8x (3x lossless)
Video Codec:
H.264/H.265
Special Features:
HDR video at up to 4K resolution, 120fps slow-motion at up to 2K
Software & Intelligence
Smart Tracking:
Subject tracking with obstacle avoidance
Flight Features:
Autonomous return to home, precision landing system
GSD Performance Comparison
Autel Evo Max 4T
| Height (feet) | GSD (inches/pixel) | GSD (cm/pixel) |
|---|---|---|
| 100 ft | 0.26 in/pixel | 0.66 cm/pixel |
| 200 ft | 0.52 in/pixel | 1.32 cm/pixel |
| 300 ft | 0.78 in/pixel | 1.98 cm/pixel |
| 400 ft | 1.04 in/pixel | 2.64 cm/pixel |
| 500 ft | 1.30 in/pixel | 3.30 cm/pixel |
| 600 ft | 1.56 in/pixel | 3.96 cm/pixel |
Autel Evo II 640T & Evo II Pro 6K
| Height (feet) | GSD (inches/pixel) | GSD (cm/pixel) |
|---|---|---|
| 100 ft | 0.30 in/pixel | 0.76 cm/pixel |
| 200 ft | 0.60 in/pixel | 1.52 cm/pixel |
| 300 ft | 0.90 in/pixel | 2.29 cm/pixel |
| 400 ft | 1.20 in/pixel | 3.05 cm/pixel |
| 500 ft | 1.50 in/pixel | 3.81 cm/pixel |
| 600 ft | 1.80 in/pixel | 4.57 cm/pixel |
Optimal Flying Heights by Application
Autel Evo Max 4T
| Application | Recommended GSD | Recommended Height |
|---|---|---|
| Detailed inspection | <0.5 cm/pixel | <75 ft |
| High-quality mapping | 0.5-1 cm/pixel | 75-150 ft |
| Standard mapping | 1-2 cm/pixel | 150-300 ft |
| Large area survey | 2-5 cm/pixel | 300-750 ft |
Autel Evo II Series
| Application | Recommended GSD | Recommended Height |
|---|---|---|
| Detailed inspection | <0.5 cm/pixel | <65 ft |
| High-quality mapping | 0.5-1 cm/pixel | 65-130 ft |
| Standard mapping | 1-2 cm/pixel | 130-260 ft |
| Large area survey | 2-5 cm/pixel | 260-650 ft |
Primary Applications
Autel Evo Max 4T
- Multi-sensor operations requiring thermal, visual, and zoom capabilities
- Public safety and search and rescue operations
- Scenarios where multiple camera perspectives are needed
- Inspections in electrically noisy environments
Autel EVO II Dual 640T
- Thermal imaging applications
- Wildlife management
- Search and rescue operations
- Solar panel inspection
- Energy audits
- Infrastructure inspection
Autel EVO II Pro 6K
- Professional cinematography
- High-detail mapping
- General aerial photography and videography
- Less demanding mapping applications
- Situations requiring good balance between GSD and cost