Summary
This article outlines best practices and recommendations for using the SDX-Compact in mobile mapping scenarios such as road surveys. It helps users avoid common pitfalls and optimize scan quality.
This article outlines best practices and recommendations for using the SDX-Compact in mobile mapping scenarios such as road surveys. It helps users avoid common pitfalls and optimize scan quality.
Introduction
When the SDX-Compact is used on a vehicle instead of a construction machine, it functions as a mobile mapping device — capturing data while driving and uploading it to SDX-Cloud for processing. Since the system was not originally developed for mobile mapping, specific setup and usage considerations are essential to achieve reliable results.
Prerequisites
- Familiarity with SDX-Compact usage
- Basic knowledge of SDX-Cloud and SDX-Mate
- An existing project setup in SDX-Cloud
- Vehicle with appropriate SDX mounting plates
Step-by-Step Instructions
1. Mounting the Laser Scanner Correctly
- The LiDAR must face forward or backward in the driving direction.
- Do not mount it sideways, as this can reduce scan accuracy and cause poor data capture.
- Ensure both GNSS antennas are aligned with the vehicle’s driving axis.
2. Speed and Acceleration Impact
- The SDX system includes speed profiles tailored for mobile mapping.
- For best results, stay below 40 km/h.
- High speed or rapid acceleration may cause lower point cloud density and reduced scan quality.
Tip
Smooth driving improves point cloud consistency. Avoid rapid acceleration and harsh braking where possible.
Smooth driving improves point cloud consistency. Avoid rapid acceleration and harsh braking where possible.
3. Environmental Factors
- Dry and bright environments are ideal.
- Wet or dark roads reduce reflectivity and degrade scan results.
- GPS reception is also best under clear skies.
4. Data Upload After Scanning
- Always ensure all data is uploaded before shutting down the system.
- The SDX-Mate app shows:
- How much data has been uploaded
- Whether any uploads are still in progress
Warning
Shutting down before uploads are complete can result in missing data or delays in SDX-Cloud processing. Always verify upload status in SDX-Mate before powering off.
Shutting down before uploads are complete can result in missing data or delays in SDX-Cloud processing. Always verify upload status in SDX-Mate before powering off.
5. Avoid Challenging Conditions When Possible
- Tunnels and dense urban areas can block GNSS signals.
- While the system may still function, accuracy will be affected in these zones.
6. Know the Limitations
- These are recommendations, not hard requirements.
- The system is robust and will continue to operate, but following these practices improves reliability and scan quality.
Common Issues or Tips
- Misaligned scanner = reduced accuracy
- Wet LiDAR lens = internal reflections
- Ignoring upload status = potential data loss
- Over-speeding = gaps in point clouds
Tip
If scan quality drops unexpectedly, first check scanner orientation, GNSS alignment, and whether the LiDAR lens is clean and dry.
If scan quality drops unexpectedly, first check scanner orientation, GNSS alignment, and whether the LiDAR lens is clean and dry.
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