An evaluation method based on analytic hierarchy process （AHP） is proposed to evaluate the electromagnetic environment complexity of electronic equipment. The influencing factors and principles related to the complexity of the electromagnetic environment are introduced. The evaluation index system and the calculation method of each index are analyzed. Quantitative expression form of complex electromagnetic environment is provided. An evaluation model of electromagnetic environment complexity based on decision theory is proposed by AHP. An application example is used to visually display the complexity of the electromagnetic environment in a specific area. The simulation results show that the evaluation and presentation method can comprehensively and accurately describe the complexity of the electromagnetic environment.

A target track simulation method based on embedded PSO is proposed to address the fidelity and universal applicability issues of radar-moving target track simulation. Firstly， the principle of simulation moving target track by UAV is analyzed， the motion model and coupling relationship between the UAV and the simulated target is discussed and the control quantity and control equation are determined. Then， based on constraint conditions of target motion track simulation， the objective optimization fitness function is proposed by UAV performance and energy consumption， and the optimal control model of target track simulation is established. Finally， in order to improve the accuracy and practicality of the model solution， the particle swarm optimization algorithm is improved and embedded in the model solution， achieving effective simulation of different motion tracks of the target. The simulation results indicate that this method can have wide applicability for simulating the track of moving targets.

The complex battlefield electromagnetic environment is an important element of the modern battlefield. It is important to master its connotation and characteristics to improve battlefield perception， weapon effectiveness， and survivability. The complex battlefield electromagnetic environment research has great application value for weapon capability. The basic concepts and research status of complex battlefield electromagnetic environment is summarized. The study of complex battlefield electromagnetic environment is summarized as electromagnetic environment description， monitoring， measurement and construction， and weapon adapt-ability test in two aspects of cognitive research and application research， and these five contents are discussed respectively. Finally， the future research direction and trend of complex battlefield electromagnetic environment are prospected