Abstract: The need in the art is addressed by the improved missile fire control system of the present invention. In the illustrative embodiment, the inventive system is adapted for use with TOW missile systems and includes a telescope cluster assembly (10) for generating target position signals (18,20). A digital error detector (22?) receives and processes target position signals (18,20) from the telescope cluster assembly (10). The processed signals (24,26) are then fed to a stabilization control amplifier (50), where a microcontroller (56) steps through a set of instructions eliminate angular noise from the target position signals (24,26). The stabilization control amplifier (50) subsequently provides feedback to the telescope cluster assembly (10) for adjusting the line-of-sight in the telescope cluster assembly (10). Software instructions for the microcontroller (56) and constant reference data are stored in the microcontroller memory (not shown).

Abstract: A coordinate transformation apparatus (138) in an aircraft-based missile guidance and tracking system for adjusting aircraft and missile position signals for a roll angle about the line of sight in the guidance and tracking system sight unit (40) caused by roll of the aircraft subsequent to firing of the missile. The apparatus (138) incorporates analog to digital converter means (140), (144), (156), (160) and (180) to convert the analog aircraft and missile position signals to digital signals for input into a microprocessor (168). The microprocessor (168) computes the roll angle as well as a change in roll angle over time around the line of sight of the sight unit (40) and subsequently adjusts the digital signals to compensate for the computed roll angle and change in roll angle. Digital to analog converter means (182), (186) and (190) convert adjusted digital signals to analog signals and output the adjusted analog signals for computation of missile guidance signals by the system.