A20KTR-50HD
Introduction
The Viewpro A20KTR-50HD is a high-performance 4K AI triple-sensor gimbal camera designed for professional UAV applications. Integrating an 8.51MP Sony Exmor R CMOS visible-light camera, a 1280×1024 high-resolution thermal imaging camera, and a 20–3000m laser rangefinder, it provides comprehensive visual and thermal sensing capabilities for aerial observation, target detection, and long-range monitoring.
The EO camera features 20x optical zoom and supports up to 30x zoom with Super Resolution, delivering detailed 4K imagery for long-distance observation. Its thermal imaging system features a 1280×1024 uncooled VOx detector, 12μm pixel pitch, and a 50mm lens, enabling the capture of detailed thermal images even in low-visibility conditions.
The integrated laser rangefinder measures distances from 20m to 3000m, providing accurate distance information for objects at the center of the screen. Combined with AI-based human and vehicle detection and intelligent object tracking, the A20KTR-50HD offers an integrated sensing solution for advanced UAV operations.
Featuring three-axis stabilization with an angular vibration accuracy of ±0.02°, multiple video output options, and flexible control interfaces, the A20KTR-50HD is suitable for aerial surveillance, search and rescue, infrastructure inspection, and other professional applications requiring reliable multi-sensor imaging.
Specifications
| A20KTR-50HD Overall Specifications | |
| N.W. | 1410g |
| Product meas. | 150.1*135*218.2mm |
| Input voltage | 14.8V~25.2V |
| Dynamic current | 1100~1500mA @ 16V |
| Power consumption | Average 17.6W, Max 24W |
| Working environment temp. | -20℃ ~ +50℃ |
| IP rate | IP4X |
| Output | Micro HDMI(1080P 60fps) / IP (RTSP/UDP 4K/1080P/720P 30fps H264/H265) |
| Storage | TF card (Up to 256G,class 10, FAT32) |
| Picture in TF Card | JPG(4K:3840*2160) |
| Video in TF Card | MP4(4K@30fps) |
| Control method | PWM / S.BUS / UART (TTL) / TCP / UDP |
| Gimbal Spec | |
| Mechanical Range | Pitch/Tilt: -60°(Up)～135°(Down), Roll: ±40°, Yaw/Pan: ±300° / ±360°*N (IP output version) |
| Controllable Range | Pitch/Tilt: -45°～110°, Yaw/Pan: ±290° / ±360°*N (IP output version) |
| Vibration angle | Pitch/Roll/Yaw: ±0.02° |
| One-key to center | √ |
| EO Camera Spec | |
| Imager Sensor | 1/2.5″ “Exmor R” CMOS |
| Total pixel | 8.51MP |
| Optical zoom | 20x, F2.0 to F3.8, f = 4.4~88.4 mm, up to 30x with Super Resolution |
| Field of View (H, V) | H: 70.2°(Wide end) ~ 4.1°(Tele end) V: 43.1°(Wide end) ~ 2.3°(Tele end) |
| Digital zoom | 12x (240x with optical zoom) |
| Min illumination | 1.6 lux (1/30 sec, 50%, ICR off, High Sensitivity mode Off ) 0.4 lux (1/30 sec, 50%, ICR Off, High Sensitivity mode On) 0.21 lux (50%, ICR off, Slow Shutter 1/4s, High sensitivity off) 0.06 lux (50%, ICR off, Slow shutter 1/4s, High sensitivity on) |
| S/N ratio | 50dB |
| Recommended illumination | 100 to 100000 lux |
| shutter speed | 1/1 to 1/10000 sec |
| Exposure control | Auto, Manual, Priority mode(shutter priority & iris priority) |
| Focus | Auto/Manual |
| Min. working distance | 80 mm (Wide end), 800 mm (Tele end) |
| Backlight compensation | Yes |
| Auto ICR | Yes |
| Noise Reduction | Yes |
| Image stabilization(EIS) | Yes |
| Defog | Yes |
| IR Thermal Imager Spec | |
| Focus Length | 50mm |
| Horizontal FOV | 17.5° |
| Vertical FOV | 14.0° |
| Diagonal FOV | 22.3° |
| Detective Distance (Man: 1.8×0.5m) | 2083 meters |
| Recognize Distance (Man: 1.8×0.5m) | 521 meters |
| Identification Distance (Man: 1.8×0.5m) | 260 meters |
| Detective Distance (Car: 4.2×1.8m) | 6389 meters |
| Recognize Distance (Car: 4.2×1.8m) | 1597 meters |
| Identification Distance (Car: 4.2×1.8m) | 799 meters |
| Working mode | Uncooled VOx long wave (8μm~14μm) thermal imager |
| Detector pixel | 1280*1024 |
| Pixel pitch | 12μm |
| Focusing method | Athermal prime lens |
| NETD | ≤35mK@F1.0 @25℃ |
| Color palette | White hot, Black hot, Iron Red |
| Digital zoom | 1x ~ 8x |
| Laser Rangefinder | |
| Range | 20~3000m |
| Frequency | 1~10Hz |
| Accuracy | ±1m |
| Light Beam | 1535±5nm pulse laser |
| Divergent Angle | ≤0.5 mrad |
| Rangefinder | Measure the distance between the object at the center of screen and the laser rangefinder |
| Camera Object Tracking | |
| Update rate of deviation pixel | 30Hz |
| Output delay of deviation pixel | <30ms |
| Minimum object contrast | 5% |
| SNR | 4 |
| Minimum object size | 32*32 pixels (at 4K resolution). The target size is positively correlated with the resolution. |
| Maximum object size | Unrestricted |
| Tracking speed | Horizontal: Tracking target width in pixels * 2 (pixels/frame) Vertical: Tracking target height in pixels * 2 (pixels/frame) |
| Object memory time | 2s |
| Camera AI Performance | |
| Targets type | Car and human |
| Simultaneous detection quantity | ≥ 10 targets |
| Min contrast ratio | 5% |
| Min target size | 40*20 pixels (at 4K resolution). The recognized target size is positively correlated with the resolution. |
| Car detection rate | ≥85% |
| False alarm rate | ≤10% |