Research on common-aperture technology in multimode composite seeker

Common aperture technology is one of the key technologies for enhancing the spatiotemporal consistency and antijamming capability of multi-mode composite seekers. This paper begins by summarizing the types and characteristics of multi-mode composite seekers. Subsequently, it compares the advantages and disadvantages of separate aperture and common aperture technical approaches, with a focus on explaining the working principles and features of optical and optical/radar common aperture solutions. The research progress in tri-mode common aperture technology is also reviewed. Finally, future developments in common aperture technology are discussed. This paper can serve as a reference for engineering selection and technical optimization of multi-mode composite seekers.