:文中提出一种能使机载红外搜索跟踪系统 (IRSTS)在单站单波段条件下实现被动动态测距测速的技术方案。该方案融合了红外探测器对目标辐射的响应信息 ,利用机载惯性导航系统(INS)提供的本机状态参数 ,建立了动态获取目标距离和速度信息的解算模型———SSIR VRM模型。大量的仿真研究证明了该模型的可行性 ,其测量精度基本能满足机载导弹火控解算的需要。 This paper presents a technical scheme that enables the IRSTS to realize passive dynamic ranging and velocity measurement under single-band single-band conditions. The scheme integrates the infrared detector’s response to the target radiation. Based on the local state parameters provided by the INS, the SSIR VRM model is established to solve the target distance and velocity information dynamically. A large number of simulation studies have proved the feasibility of the model, and its measurement accuracy can basically meet the needs of airborne missile fire control solution.