Pricing
00
Guided beta caseProbeginnerLaserScan indexing

The scan is mirrored after filtering

Restore scan geometry while retaining the outlier filter.

Pairs with LiDAR data and sensor timing in Mobile Robot Reliability. Read the concept first, then diagnose it here.

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Operator report

Raw scan obstacles are correct; filtered scan obstacles are mirrored.

Ubuntu 24.04, ROS 2 Jazzy, Gazebo Harmonic, RViz telemetry, differential-drive warehouse robot

01

System boundary

Trace only the relevant path.

3 nodes
  1. 01raw LaserScan→
  2. 02range filter→
  3. 03filtered LaserScanOUT
02

How this lab works

You diagnose it. No command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you - finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

03

Verification

Pass more than the visible symptom.

4 checks
  • Nearest obstacle angle preserved
  • Outliers remain filtered
  • Hidden regression behavior
  • Root cause explanation