![[Hybrid Navigation System: Part 6] [Implementation-Phase 2] Intermediate Correction: OpenCV/YOLO Terrain Matching and Digital Twin Testing](https://quad-drone-lab.co.kr/wp-content/uploads/2026/06/Absolute_Visual_Localization_for_UAVs-768x429.jpg)
Hello! To all the graduate students and researchers burning the midnight oil at the forefront of autonomous unmanned aerial vehicle (UAV) systems—welcome back to the QUAD Drone Lab. In Part 5, we explored PX4’s Dead-Reckoning mode, a critical software safety net that allows a drone to survive and maintain flight in GNSS-Denied environments, such as…
![[Hybrid Navigation System: Special Edition] Survive GPS Jamming! A Complete Guide to “PX4 Dead-Reckoning Mode”](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/Resilient_Drone_Dead-Reckoning_Navigation-768x429.jpg)
Hello! To all the graduate students and researchers burning the midnight oil at the forefront of autonomous unmanned aerial vehicle (UAV) systems—welcome to the QUAD Drone Lab. Throughout our series, we have built various hardware and software architectures—such as high-performance external INS, ROS 2 communication bridges, terrain contour matching, and visual servoing—designed to help our…
![[Hybrid Navigation System Series Part 1: Overview] Flying Hundreds of Kilometers Without GPS? Learning a Hybrid Navigation System from WWII Pilots](https://quad-drone-lab.co.kr/wp-content/uploads/2026/04/컴패니언-컴퓨터-기반의-AI-지형지물-보정-768x419.jpg)
Hello, university students and drone researchers who are diving into the world of autonomous flight and navigation systems! The drones we use every day can locate themselves as quickly and accurately as our smartphones. This is all thanks to the Global Navigation Satellite System (GNSS, commonly referred to as GPS). However, in modern, complex battlefields…
Recently, news about “Iranian suicide drones flying hundreds of kilometers to attack a target” has become an almost daily occurrence. Watching these reports, a thought suddenly crossed my mind: “With recent GPS jamming making it difficult to use GPS for navigation, how did they manage to fly to their targets?” This led to another question:…
