QJ-FETL-3

Triple-Sensor EO IR LRF UAV Camera 8K Imaging System | QJ-FETL-3

The QJ-FETL-3 is a compact triple-sensor UAV payload that integrates a fixed-focus 8K visible camera, a zoom visible camera, a 640×512 thermal imaging module, and a laser rangefinder. This multi-sensor configuration enables drones to perform high-resolution imaging, long-range observation, and thermal detection within a lightweight aerial platform.

The system includes an 8000×6000 fixed camera for ultra-high-resolution wide-area imaging and a zoom camera with a 15.3–49.7 mm focal length for long-distance observation. Combined with a 640×512 infrared sensor and a 905 nm laser rangefinder with a measurement range up to 1.5 km, the payload supports reliable target detection, identification, and distance measurement.

With a compact structure of ≤400 g and stabilized gimbal control, the QJ-FETL-3 is suitable for UAV applications such as inspection, security monitoring, reconnaissance, and search-and-rescue missions.

Benefits and Features

The QJ-FETL-3 integrates ultra-high-resolution visible imaging, thermal sensing, and laser ranging into a lightweight UAV payload for advanced aerial monitoring.

Ultra-High-Resolution Imaging

Dual visible cameras provide 8000×6000 resolution for wide-area imaging and detailed long-range observation.

Thermal Detection Capability

640×512 thermal imaging sensor enables heat signature detection and monitoring in low-visibility conditions.

Integrated Laser Rangefinder

905 nm LRF measures distances from 5 m to 1.5 km with ±1 m accuracy for target positioning.

Compact Multi-Sensor UAV Payload

Lightweight ≤400 g design with multiple communication interfaces allows flexible UAV integration.

Technical Specifications

QJ-FETL-3 Technical Specifications
Dimensions ≤ 95 × 97 × 124.7 mm
Weight ≤ 400 g (quick release included)
Power Input 11 – 28 VDC
Power Consumption 15 W (average) / 30 W (peak)
Operating Temperature -20℃ ~ 60℃
Storage Temperature -40℃ ~ 70℃
Communication Interface Serial (RS422 / RS232 / TTL optional), Fast Ethernet, SBUS
Video Interface Fast Ethernet
Video Protocol RTSP / UDP
Storage 128 GB
Photo / Video Format JPEG / MP4 (H.264 / H.265)
Gimbal System
Yaw Range N × 360° continuous
Pitch Range -120° ~ +45°
Stabilization Accuracy ≤100 μrad
Angular Velocity ≥60°/s
Angular Acceleration ≥150°/s²
Fixed Visible Camera
Spectral Band 0.4 – 0.9 μm
Resolution 8000 × 6000
Lens 4.56 mm / F2.8
Field of View 82° × 61.54°
Detection Range Human 0.34 km; Vehicle 2 km
Recognition Range Human 0.08 km; Vehicle 0.5 km
Zoom Visible Camera
Spectral Band 0.4 – 0.9 μm
Resolution 8000 × 6000
Focal Length 15.3 – 49.7 mm
Field of View 23.48° – 7.29°
Detection Range Human 3.8 km; Vehicle 15 km
Recognition Range Human 0.9 km; Vehicle 5.7 km
Thermal Camera
Spectral Band 8 – 14 μm
Resolution 640 × 512
Lens 19 mm / F1.0
Field of View 23° × 18.4°
Detection Range Human 0.53 km; Vehicle 2.5 km
Recognition Range Human 0.19 km; Vehicle 0.8 km
Laser Rangefinder
Wavelength 905 nm
Range 5 m – 1.5 km
Accuracy ±1 m
Frequency 1 Hz
Target Tracking Performance
Single Target Frame Rate ≥30 FPS
Multi-Target Types Human, Vehicle, Vessel, Aircraft
Simultaneous Targets ≥20
Minimum Target Size 32 × 32 @1080P
Recall Rate ≥90%
Precision ≥80%
Tracking Jump Rate ≤15%
Update Frame Rate ≥30 FPS

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