红外搜索跟踪系统单机运动测距方法研究

机载红外搜索跟踪系统只能测量目标的方位、俯仰角度信息,而无法直接获取目标的距离信息。因此需通过载机平台的机动运动,提高系统可观测性,从而对目标距离进行解算,为火控系统提供完整的目标运动参数,实现对目标的被动攻击。通过建立红外搜索跟踪系统（IRST）单机运动测距的数学模型,针对伪测距的非线性滤波的有偏特点进行了去偏处理,获得无偏的单机运动测距模型,并通过数字仿真进行算法模型的仿真验证,验证了算法的有效性。

Research on Passive Ranging Using a Single Airborne Infrared Search and Track System

The Infrared Search and Track （IRST） system has now become one important detection sensor of airborne platform, but it can not measurement the distance of target directly. So the platform must motorize to locate target passively and provide the complete information of target for the Fire Control system, in order to passively attack the target. By the model of maneuvering location based on the single observer, we overcome the shortage of pseudo- range by using the method of depolarization and improve the effect of the nonlinear filtering. Simulation results have been analyzed and show that the model and algorithm satisfy the requirement.