Table of Contents
Lidar technology relies on laser pulses to measure distances and create detailed 3D maps of environments. The wavelength of the laser light plays a crucial role in determining the system’s effectiveness, influencing factors such as range, resolution, and environmental interaction.
Theoretical Foundations of Wavelength Selection
The choice of wavelength affects how laser light interacts with different materials and atmospheric conditions. Shorter wavelengths, such as near-infrared, offer higher resolution but are more susceptible to scattering. Longer wavelengths can penetrate fog or dust better but may have lower resolution.
Practical Considerations in Wavelength Choice
Manufacturers select wavelengths based on application requirements. For autonomous vehicles, wavelengths around 905 nm or 1550 nm are common. 905 nm systems are cost-effective but have limited range, while 1550 nm systems provide longer range and better eye safety.
Environmental Impact and Safety
Wavelength influences how lidar signals interact with environmental elements. Longer wavelengths are less affected by fog, rain, or dust, improving performance in adverse weather. Additionally, eye safety regulations often favor certain wavelengths, affecting system design choices.
- Resolution
- Range
- Environmental interaction
- Eye safety
- Cost