Modeling and simulation of the detecting energy distribution of laser guidance seekers

In order to evaluate the countermeasure effect of the electro-optical countermeasure equipment in the electronic base,the quadrant detector (QD) model was established,which is the sub-model of a certain type laser seeker, and simulated. The spot quadrant energy division model compensates the deficiency of the traditional sum-and-difference circuit method. The simulation result shows that the QD model can imitate the process of the QD, and it has advantages of feasibility and fast computation, which improves the credibility and reality of this type of laser seeker, and the real-time simulation speed as well.