Launch Origin and Apparent Acceleration Determination Technique

摘要

A computer-implemented analysis method is provided for identifying launch position and acceleration of a bogey relative to Earth's surface based on Earth's radius. The method includes operations of observing a target position and a velocity vector of the bogey; establishing an altitude of the bogey relative to a tangent line on the Earth's surface from the target position and the velocity vector; determining a flight path angle of the bogey relative to an intersection line perpendicular to the tangent line; calculating a launch angle of the bogey from the flight path angle and the altitude; evaluating a tilt angle of the bogey from the flight path and launch angles; establishing a distance of the target position to the launch position from the flight path and tilt angles and the Earth's radius; estimating the acceleration from the distance and a velocity magnitude deriving from the velocity vector; and reporting the acceleration and the launch position.