Design and implementation of multi-mode composite homing guidance system

With the development of modern microelectronics technology, particularly computer science and integrated circuits technology, multi-mode composite homing guidance has become a highly developing area of research and academic direction. This article presents a composite system contained readout integrated circuit of IR/UV detectors based on current mirroring integration and differential mode, design of data sampling and storage. The state estimation circuit based on digital Kalman filter algorithm is also designed in this article to complete the detectors´ signals fusion process. In this way, one tracking system from the detector signals readout circuit to the signal process circuit is proposed to an integrated solution on multi-mode composite homing guidance. Both the readout circuit and signal process circuit performance well on faint signals extraction and multi-mode signals fusion. Finally, the entire system improves the process speed to MHz order, meanwhile keeps the error to the range of 1%.