中文摘要：

因为在实践 line-of-sight (LOS ) 率是困难的让一个追求者精确地测量，没有目标演习或它的估计的任何 priori 信息，柔韧的非线性的 H 观察员面对测量噪音被使用用 LOS 方位角估计它。一条 threedimensional 指导法律被用仅仅相对的范围，速度，和 LOS 方位角用他们的估计代替 LOS 率实现。稳定性分析和执行模拟结果证明介绍途径是有效的。

英文摘要：

Since in practice the line-of-sight （LOS） rate is difficult for a pursuer to measure accurately, the robust nonlinear H∞ observer is applied to estimate it using LOS azimuths without any priori information of target maneuvers or its estimate in the presence of measurement noise. A threedimensional guidance law is implemented by replacing the LOS rate with their estimates using only relative range, speed, and LOS azimuths. The stability analyses and performed simulations results show that the presented approach is effective.