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大多数现代战术制导武器都是用比例导引作为末端制导规律的,并利用惯性稳定常平架导引头提供制导信息。比例导引规律应用得最多的原因是由于它最容易实现。业已证实,在攻击受限制的条件下,即小离轴角发射,拦截低机动性目标时,比例导引最为有效。然而,非这些条件下攻击时,它的性能就会降低。过去,由于视埸限制和保证导引头锁定的执行机构的要求,并考虑到该方法能够提供直接获得比例导引所需要的惯性瞄准线移动角速度,因此一直采用惯性稳定常平架导引头跟踪目标。
Most modern Tactical Guidance Weapons use Proportional Guidance as the Terminal Guidance Law and Guidance Information using the Inertial Stabilization Gimbal Seeker. The reason why the law of proportional guidance is most used is because it is the easiest to implement. Proportional guidance has proven to be most effective in restricted attack conditions, ie, small off-axis firing and interception of low maneuverability targets. However, it does not perform as well when attacked under these conditions. In the past, the inertial stabilized gimbal seeker has been used to track the inertial stabilized gimbal seeker due to the limitations of the operator and the actuator requirements for guaranteed seeker lock, taking into account that this method can provide the angular velocity of inertial line of sight needed for direct proportional guidance aims.