Time division multiplexing instrument landing system compatible with VOR and VDB functions

The utility model provides a time division multiplexing instrument landing system compatible with VOR and VDB functions. The time division multiplexing instrument landing system comprises a frequency synthesizer local oscillator signal generation module, a radio frequency front end module, a VOR radio frequency link, an LOC/VDB radio frequency link and an intermediate frequency signal acquisition and processing module. The VOR local oscillator signal output end and the first path of mixed radio frequency signal output end are both connected to the input end of the VOR radio frequency link; and the LOC/VDB local oscillator signal output end and the second path of mixed radio frequency signal output end are both connected to the input end of the LOC/VDB radio frequency link. On the basis of an ILS instrument landing system, VHF omnidirectional ranging (VOR) and VHF data broadcasting (VDB) are compatible, the product integration level is high, corresponding signals can be switched according to different scenes,