Application Of Terrain Contour Matching To TF/TA～2 System

In the application of TF/TA2 flight control system, significant issues arise due to position errors, which is destructive for low altitude penetration aircraft. The concept of utilizing terrain contour matching technique to fixing the errors is introduced, and this concept is essential for military TF/TA2 flight applications without GPS and Forward Looking Radar in our nation.A specific design of terrain contour matching system is presented in this thesis. This design allows low altitude penetration aircrafts can get precise position information, which is very important for tracking TF/TA2 reference trajectory.Terrain contour matching algorithm is the key of terrain contour matching system. The improvement and software development of this algorithm are presented with simulation results support.Airborne digital map is the crucial part of terrain contour matching system. The characteristics of digital map are investigated. At last a map selection algorithm is introduced, and the simulation results demonstrates this algorithm work well.