High-delay-stability antenna applied to inter-satellite micron-order ranging system

The invention discloses a high-delay stability antenna applied to an inter-satellite micron-order ranging system. The high-delay stability antenna comprises an axial groove loading light wall shaping horn, an orthogonal mode coupler, a frequency duplexer type complex waveguide part assembly and a standard waveguide transmission system. The antenna disclosed by the invention has extremely high same-frequency polarization isolation, time delay stability and multipath suppression performance, solves the technical bottleneck of the design of a micron-sized microwave distance measurement system antenna, and has important significance for improving the distance measurement and speed measurement precision of a radar and a navigation system. The antenna designed by the invention is not only suitable for a satellite load, but also suitable for a ground system, and meanwhile, the optimization method for the same-frequency polarization isolation, the phase center stability and the multipath suppression can also be popul