A Improved Algorithmic of Terrain Contour Forecast Matching Aided Navigation

The Conventional terrain contour matching(TERCOM) aided navigation system with poor real-time property,it can't meet the requirements for the navigation of aircraft in low altitude and high-speed flight.By introducing the idea of forecast control,the authors propose a terrain contour forecast matching method based on height feature.The calculation amount is reduced remarkably,and both the real-time property and the flexibility of navigation system are improved.