Design and Implement for Infrared Imaging Strapdown Seeker Simulation and Test System

In order to satisfy the stabilization requirements of the infrared imaging seeker, this paper derives the strapdown decoupling algorithm and obtains the line of sight (LOS) angular velocity required by proportional navigation law based on
$\alpha-\beta$
filter. An infrared imaging strapdown seeker (IISS) simulation and test system is established based on Real-time extension (RTX) under the Windows operating system. Based on the system, simulation and test of the target tracking performance and disturbance rejection rate (DRR) of the seeker are executed. Simulation results show that the system can be suitable for verifying the performance of infrared imaging seeker and the validity of strapdown decoupling algorithm and practicability of the simulation system framework. The simulation system can provide a useful reference for other similar strapdown seeker simulation systems.