精度要求的提高和现代战争中更加能动的战场战术使得经典导引律(如比例导航)在很多应用中不能满足要求。在空空导弹终端拦截中尤其是这样。要解决这个问题就要在更精致的硬件和更复杂的软件之间求得折衷。把硬件做得更精致常常意味着成本的提高。随着新的理论方法和低成本、高速度微处理技术的出现,稍稍增加成本或甚至丝毫不增加成本都有可能大大提高导弹的智能水平。 Increasing the accuracy requirements and the more active battlefield tactics in modern warfare make the classical guidance law (such as proportional navigation) unable to meet the requirements in many applications. This is especially true in air-to-air missile terminal interception. To solve this problem is to find a compromise between more sophisticated hardware and more complex software. Making hardware more sophisticated often means higher costs. With the advent of new theoretical methods and the availability of low-cost, high-speed microprocessing, a slight increase in cost or even no additional cost could potentially increase the intelligence level of a missile.