空间交会最终逼近段相对位移估计与控制

对航天器交会对接最终逼近段，应用线性Kalman滤波算法，给出相对位移估计算法；将实际位移对标称位移之差作为控制变量，详细阐述4种相对位移控制方法，即相平面控制法、比例加微分（PD）控制法、常推力加冲量机动法和双冲量机动法，并对其性能进行比较。模拟计算结果表明，相对位移估计精度高，4种控制方法均有效，而双冲量机动法所需的速度增量最小，适合交会对接工程应用。

Relative Position Estimation and Control for Final Approach Phase of Spacecraft Rendezvous

For the final approach phase of spacecraft rendezvous,an estimation algorithm of relative position was given based on linearized Kalman filtering,and four control schemes for the relative position were presented using controlled variables(difference between actual and nominal positions),i.e.phase plane control,proportional plus differential control,constant thrust plus impulse maneuver,and two-time impulse maneuver.Extensive simulations were made and show that the estimation algorithm and the control methods are quite effective,and two-time impulse maneuver needs minimal velocity increment.