本文针对空中交通管制中采用相互作用多模型算法(IMM)来进行飞行轨迹预测时,可能由于模型的选取不当而造成性能变差或计算浪费的不足,提出了一种基于图论的变结构相互作用多模型(GIMM )算法。本文给出了GIMM算法的基本思想、算法的模型和计算步骤,并用GIMM算法与固定结构IMM算法进行了仿真比较。仿真结果表明GIMM算法在空管飞行轨迹预测中是更为有效和可行的。 In this paper, aiming at the lack of performance degradation or waste calculation due to improper selection of the model when the flight trajectory prediction is made by using the interaction multiple model algorithm (IMM) in air traffic control, a variable structure mutual graph based on graph theory The role of multi-model (GIMM) algorithm. In this paper, the basic idea of ​​GIMM algorithm, the model and calculation steps of GIMM algorithm are given, and the simulation is compared with GIMM algorithm and fixed structure IMM algorithm. The simulation results show that the GIMM algorithm is more effective and feasible in the trajectory prediction of ATC.