Extended trajectory shaping guidance law considering a first-order autopilot lag  

作　　者：王辉 王江 程振轩 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology [2]China North Industries Group Corporation

出　　处：《Journal of Beijing Institute of Technology》2015年第3期291-297,共7页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(61172182)

摘　　要：To satisfy the terminal position and impact angel constraints,an optimal guidance problem was discussed for homing missiles. For a stationary or a slowly moving target on the ground,an extended trajectory shaping guidance lawconsidering a first-order autopilot lag（ ETSG L-C FAL） was proposed. To derive the ETSG L-C FAL,a time-to-go- nth power weighted objection function was adopted and three different derivation methods were demonstrated while the Schwartz inequality method was mainly demonstrated.The performance of the ETSG L-C FAL and the ETSG L guidance laws was compared through simulation.Simulation results showthat although a first-order autopilot is introduced into the ETSG L-C FAL guidance system,the position miss distance and terminal impact angle error induced by the impact angle is zero for different guidance time.To satisfy the terminal position and impact angel constraints,an optimal guidance problem was discussed for homing missiles. For a stationary or a slowly moving target on the ground,an extended trajectory shaping guidance lawconsidering a first-order autopilot lag（ ETSG L-C FAL） was proposed. To derive the ETSG L-C FAL,a time-to-go- nth power weighted objection function was adopted and three different derivation methods were demonstrated while the Schwartz inequality method was mainly demonstrated.The performance of the ETSG L-C FAL and the ETSG L guidance laws was compared through simulation.Simulation results showthat although a first-order autopilot is introduced into the ETSG L-C FAL guidance system,the position miss distance and terminal impact angle error induced by the impact angle is zero for different guidance time.

关 键 词：extended trajectory shaping guidance law time-to-go first-order autopilot guidance performance 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]