What is synthetic vision and how does it enhance situational awareness?

Synthetic Vision Systems (SVS) display computer-generated 3D terrain, obstacles, and flight path on the PFD based on aircraft position and terrain database. Benefits: Enhanced situational awareness in IMC and night, Terrain and obstacle awareness at a glance, Intuitive flight path visualization, and Reduced spatial disorientation risk. Components: GPS position, Terrain database, 3D rendering engine, and Accurate attitude reference. Combined Vision Systems (CVS) overlay enhanced vision (EVS from infrared sensors) on synthetic terrain. SVS is particularly valuable for terrain avoidance in mountainous areas. Not approved as sole reference for navigation but excellent backup. Systems like Garmin G1000 and Collins Pro Line Fusion include SVS.