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引言在红外自寻的系统中,通常采用脱靶量(即导弹运动轨迹与目标运动轨迹间的瞬时最小距离)来表示制导误差。引起制导误差的主要因素有:(1)因为制导系统存在盲区,由制导系统的设备误差和控制系统存在的死区引起的脱靶量,(2)因为制导系统存在惯性,由弹道弯曲引起的脱靶量;(3)因为制导系统存在惯性,由目标机动引起的脱靶量;(4)由初始偏差引起的脱靶量;(5)由其他因素引起的脱靶量。下面进行具体分析一、因为制导系统存在盲区,由制导系统的设备误差引起的脱靶量假设在盲区范围内,导弹弹道接近于直线,如图1所示。AA′——脱靶量(即下面要计算的 m 或σ);
Introduction In the infrared self-seeking system, the miss distance is usually used to represent the guidance error (that is, the instantaneous minimum distance between the trajectory of the missile and the trajectory of the target). The main factors leading to the guidance error are as follows: (1) Because of the blind zone in the guidance system, the equipment error caused by the guidance system and the miss distance caused by the dead zone in the control system, (2) Because the guidance system has inertia, (3) the amount of miss distance caused by the target maneuver because of the inertia of the guidance system; (4) the amount of miss distance caused by the initial deviation; (5) the amount of miss distance caused by other factors. The following specific analysis of a, because the guidance system has a blind spot, guided by the system error caused by miss distance in the blind area, the missile trajectory close to a straight line, as shown in Figure 1. AA ’- miss distance (ie m or σ to be calculated below);