针对火星探测任务大气进入段的高精度着陆问题,提出一种基于阻力跟踪的非线性预测制导策略。基于火星探测器大气进入段的三维运动模型,综合考虑探测器气动参数摄动、火星大气密度摄动、外部扰动以及进入时刻状态初值不确定性,设计了基于优化思想的非线性预测制导律,并对所提出的制导方法进行仿真验证。仿真结果表明:非线性预测制导律在满足控制约束的条件下可以获得较高的着陆精度。 Aiming at the problem of high-precision landing of the atmospheric entry section of Mars exploration mission, a nonlinear forecasting guidance strategy based on resistance tracking is proposed. Based on the three-dimensional motion model of the entering space of the Mars rover, the nonlinear predictive guidance law based on the optimization idea is designed considering the uncertainty of the aerodynamic parameters perturbation, the atmospheric perturbation of the Mars, the external disturbances and the initial state of the entering moment. , And verify the proposed guidance method. The simulation results show that the nonlinear predictive guidance law can obtain higher landing accuracy under the control constraint.