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UAV Altitude Hold
Release time:
2026-03-12
Nanjing Surertech Intelligent Technology Co., Ltd. (SURERTECH) Relying on its unique SPAD technology and in-depth understanding of UAV application requirements, the company has developed VB-series and WT-series LiDAR module products.These products provide high-precision downward altitude detection and omnidirectional early obstacle perception in four directions: forward, backward, left, and right for various aerial platforms, including
·Aerial photography drones
·FPV drones
·Fire-fighting drones
·Power inspection drones
·Fixed-wing UAVs
·Coaxial dual-rotor UAVs
·Helicopters
What is SPAD Technology?
SPAD(Single-Photon Avalanche Diode) is an advanced photon detection technology characterized by:
·Ultra-high sensitivity
·Long detection range
·Strong ambient light resistance
·Highly integrated design
By adopting SPAD technology, SURERTECH altitude-hold LiDAR sensors deliver reliable and precise performance for demanding UAV applications.
| VB22A | VB50A | WT100A | WT300A | WT1500A | |
| Product Image |  |
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| Range | 0.05m-20m@ 90% reflectivity 0.05m-10m@ 10% reflectivity |
0.05m-50m@ 90% reflectivity 0.05m-20m@ 10% reflectivity |
0.05m-100m@ 90% reflectivity 0.05m-30m@ 10% reflectivity |
0.05m-300m@ 90% reflectivity 0.05m-100m@ 10% reflectivity |
0.05m-1500m@ 90% reflectivity 0.05m-300m@ 10% reflectivity |
| Frame Rate | 200Hz | 100Hz | 1KHz | 1KHz or 50Hz | 1KHz or 50Hz |
| Dimensions (L*W*H) |
21x15x7.43mm | 18.7x11.8x13.3mm | 33x34x18mm | 33x34x18mm | 33x34x18mm |
| Communication | UART/IIC | UART/IIC | UART/IIC | UART/IIC | UART/IIC |
| Weight | 2g | 1.3g | 20g | 20g | 20g |
Key Advantages for UAV Applications
High Detection Frequency
Ensures fast distance updates, enabling stable altitude hold even during high-speed flight.
Long Detection Range
Provides accurate distance measurement across various ground surfaces and outdoor environments.
Lightweight Design
Minimizes payload impact and reduces power consumption, while maintaining high-precision altitude sensing.
Compact Form Factor
Small and lightweight design makes integration easy for UAVs of different sizes while saving valuable structural space.
Strong Ambient Light Immunity
Maintains stable performance under strong sunlight and complex outdoor lighting conditions, making it ideal for outdoor flight missions.
Supported Flight Controllers: Pixhawk4, INAV
Pixhawk4 Application Example
INAV Application Example
Phone：+86 025-58327981
Email：swzn@surertech.com
Nanjing Surertech – Precision Sensing with Photoelectric & ToF Technology
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Customer Service Hotline
E-mail: swzn@surertech.com
Website:http://www.surertech.cn
Address: 13-14 floors, Building 1, Software Valley Headquarters Economic Park, Yuhuatai District, Nanjing City, Jiangsu Province
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