Autonomous Systems

LiDAR to LiDAR Calibration

Seamless multi-LiDAR fusion achieving 1cm alignment accuracy for 360Β° perception in autonomous vehicles

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Client
Autonomous Vehicle OEM
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Alignment Error
< 1cm
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Coverage
360Β°

Complete Environmental Awareness

A leading autonomous vehicle manufacturer needed to integrate multiple LiDAR sensors for complete 360Β° coverage without blind spots. Their existing calibration methods resulted in misaligned point clouds at sensor boundaries, causing ghost objects and false detections.

CalibWorks developed an advanced multi-LiDAR calibration system that precisely aligns point clouds from different sensors into a unified coordinate frame. The solution handles varying LiDAR models, mounting positions, and field-of-view overlaps to create seamless environmental perception.

  • Automatic extrinsic calibration between multiple LiDARs
  • Temporal synchronization across all sensors
  • Overlap region optimization for seamless fusion
  • Real-time point cloud merging and deduplication
  • Cross-validation using natural features
  • Continuous online calibration refinement
Alignment Accuracy
1cm
Angular Precision
0.1Β°
Coverage
360Β°
LiDAR Units
6 sensors

Multi-LiDAR Coverage

Seamless 360Β° point cloud fusion

Sensor Coverage Map

6
LiDAR Units
360Β°
Coverage
200m
Range
L1
L2
L3
L4

Technical Challenges

Complex multi-sensor fusion requirements

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Point Cloud Registration

Precise alignment of millions of points from different LiDARs with varying densities and scan patterns.

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Time Synchronization

Microsecond-level temporal alignment across multiple sensors with different scan rates and latencies.

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Duplicate Removal

Intelligent deduplication in overlap regions while preserving point cloud density and detail.

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Thermal Drift

Compensating for mounting deformation due to temperature changes affecting calibration accuracy.

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Vehicle Dynamics

Maintaining calibration during vehicle motion, vibration, and mechanical stress on sensor mounts.

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Cross-Validation

Continuous validation of calibration quality using environmental features and landmarks.

System Specifications

Multi-LiDAR fusion technology

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LiDAR Configuration

  • Sensors 6 units
  • Channels 32-128 layers
  • Range 200m
  • FOV 360Β° Γ— 40Β°
  • Points/sec 2.4M total
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Calibration Performance

  • Translation < 1cm
  • Rotation < 0.1Β°
  • Time Sync < 1ms
  • Registration ICP + GICP
  • Optimization Bundle Adjust
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Processing System

  • Fusion Rate 10 Hz
  • Latency < 50ms
  • GPU Accel CUDA 11.0
  • Memory 32GB
  • Interface ROS2

Industry Applications

Multi-LiDAR systems across sectors

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Autonomous Vehicles

Level 4/5 self-driving perception

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Drones

Aerial mapping and surveying

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Mobile Robots

Warehouse and delivery automation

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Construction

Site monitoring and progress tracking

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Security

Perimeter monitoring systems

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HD Mapping

City-scale 3D map generation

System Performance

Measurable improvements in perception

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1cm
Alignment Error
↓ 95% reduction
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360Β°
Full Coverage
↑ No blind spots
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99.9%
Detection Rate
↑ From 94%
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10Hz
Fusion Rate
↑ Real-time
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0.01%
False Positives
↓ 100x better
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ASIL-D
Safety Rating
↑ Certified

Achieve Seamless LiDAR Fusion

Deploy precision multi-LiDAR calibration for complete 360Β° perception in autonomous systems.