This paper describes tree real-time video edge tracking algorithms for use in tracking targets such as boosting-rockets and satellites. These algorithms are referred to as the Maximum intercept method. Single modified-Hough transform method, and the Double modified-Hough transform method. These algorithms assume knowledge of the angle associated with the edge that you wish to track. Two methods of obtaining the best edge angle from which to track are presented. These edge tracking algorithms and edge- angle determination methods evolved throughout the development of the Advanced Modular Tracker (AMT). The AMT is a real-time video tracker with sophisticated mode logic and is described in another paper. The AMT will be the primary tracker for the High Altitude Balloon Experiment (HABE) being performed by the USAF Phillips Laboratory for the Strategic Defense Initiative Organization (SDIO).