Simulation Analysis of Binary Antenna Radiation Field Mathematical Model of Instrument Landing System.

Instrument landing system provides precise approach and landing guidance services for aircraft, and its antenna plays a crucial role in its performance. In this paper, the antenna array theory is firstly analyzed, and on this basis, the mathematical model of equal-amplitude in-phase binary antenna array and equal-amplitude inverse-phase binary antenna array is derived, and the spatial superposition vector diagram is drawn. Then, the polar coordinate diagram and Cartesian coordinate diagram of binary antenna array function under different antenna spacing are simulated by MATLAB. Summarize the rules and lay the foundation for the later research.