A system for precision strikes against ground targets, an Intelligent Warhead System requires a certain sequence of measurements and control in the terminal phase. This report initializes an analysis and structures the connection, dependencies and requirements between the warhead systems and the sensors, i.e. the base for system synthesis. This includes the possibilities of the signal processing to extract robust sensor features such as sub-scatters and target contours. The projectile should hit the desired point-of-impact within s 0.25 meter and therefore the target attitude must be estimated within a few degrees. The analysis model is based on a coordinate system defined by the robot velocity vector and a plane through the point-of-impact. The equations become clear (block diagonal) and capture the dominant uncertainties. Central for the problem is to estimate the coordinates of the target and the point-of-impact relative to the moving sensor. A large number of parameters describing the sensors, platforms, warhead system, and the homing tactics (approach path) do vary. In the signal interpretation the dominant uncertainty is the association error between measured sub-scatters on the target and model. Association error results in erroneous sensor interpretations which gives rise to large errors in the estimation of target position, attitude, and also identity.