The invention discloses a
medium wave navigation
simulation method based on Hilbert change analog signals, and relates to the field of
radio navigation, the method comprises the following steps: S1, setting working
signal parameters, and initializing the orientation of a radio
compass; s2, the
electromagnetic propagation model calculates
signal amplitude and phase information received by the
omnidirectional antenna and the
loop antenna under the current aircraft attitude; s3, carrying out carrier wave reconstruction, and generating an annular modulation
signal; s4, superposing the signals; s5, calculating envelope modulation depth, and judging whether the direction of the
current loop antenna is the real
azimuth angle of the navigation
station according to whether the modulation depth approaches zero; s6, if yes, outputting an
azimuth angle; and if not, adjusting the pointing angle of the
loop antenna, and repeating the steps S2 to S5. According to the method, the fundamental process of direction finding logic is reconstructed from the phase level, so that the
simulation system can still keep stable direction finding performance in a complex multi-path environment, and the
engineering practicability and environmental adaptability of the method are enhanced.