Hardware-in-the-loop simulation system of multi-path effect of microwave landing system based on scale mode

In this hardware-in-the-loop simulation system, according to the technology system and navigation principle of the microwave landing system (MLS), and according to the characteristics of the laser beam, we use the controllable laser transmitting equipment to simulate the function of the angle navigation antenna of the MLS, radiating well directional laser scanning signal. According to the electromagnetic similitude theory, we set up the scale model of the environment of an airport equipped with MLS, and use the propagation of the laser in the scale model of the airport to simulate the real multi-path effect of the navigation signal transmitted by the MLS. The feasibility of this simulation system is analyzed thoroughly, including the wavelength of laser used and the scanning speed. This simulation system utilizes the MATLAB/RTW rapid prototyping target-xPC target to run the real-time simulation of the airborne receiver signal processing.