# Two-layer obstacle collision avoidance with machine learning for more energy-efficient unmanned aircraft trajectories

> Research article (Robotics and Autonomous Systems, 2017) · cited 53× · AI/ML

**Wikidata**: [openalex:W2755184062](https://www.wikidata.org/wiki/openalex:W2755184062)  
**Source**: https://4ort.xyz/entity/two-layer-obstacle-collision-avoidance-with-machine-learning-for-more-energy-efficient-unmanned-aircraft-trajectories