Circular navigation missile guidance with incomplete information and uncertain autopilot model

The use of circular navigation missile guidance with Autopilot model was discussed. The circular navigation guidance (CNG) was formulated for two dimensional (2D) planar intercepts and was built on a geometric principle that allows a simple feedback control law to give probably perfect intercepts against nonmaneuvering targets. The robust extended Kalman filter was used to estimate the state and robust control techniques. The CNG had two objectives such as minimizing miss distance and achieving impact form a specific angle equal to the target's velocity vector plus some offset β.