In this paper, a novel scheme of command to line-of-sight guidance law regarding the outstanding practical limitations is proposed. With the aid of formulating problem in pursuer's line of sight frame, the exact feed-forward acceleration commands are derived for a general target motion in three-dimensional engagement geometry. Then, a nonlinear control scheme constructed from feed-forward terms along with a nested saturated feedback strategy is suggested. Two momentous practical limitations are considered. The first is related to existence of pursuer's acceleration saturation which is ignored in all existing solutions. The required conditions to insure the global stability are derived regarding this inevitable constraint. The second is related to existence of guidance filter which is assumed to be ideal in existing literature. The importance of guidance filter is highlighted in the present work employing a cubature Kalman filter. The effectiveness of proposed scheme in comparison with the well-known augmented proportional navigation law, with the absence and presence of guidance filter, autopilot dynamics and target maneuvers is illustrated through benchmark scenarios.

中文翻译：

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具有实际限制的新型视线引导命令

在本文中，针对突出的实际限制，提出了一种新的视距制导法指挥方案。借助追赶者视线框架问题的公式化，推导了三维交战几何中一般目标运动的精确前馈加速度指令。然后，提出了一种由前馈项和嵌套饱和反馈策略构成的非线性控制方案。考虑了两个重要的实际限制。第一个与追求者加速度饱和的存在有关，在所有现有解决方案中都忽略了这一点。确保全球稳定所需的条件是根据这一不可避免的约束条件得出的。第二个与现有文献中假定为理想的引导过滤器的存在有关。在目前采用容积卡尔曼滤波器的工作中强调了引导滤波器的重要性。通过基准场景说明了与众所周知的增强比例导航法相比，所提出的方案的有效性，在没有和存在制导滤波器、自动驾驶仪动力学和目标机动的情况下。