提出了一种角增量的生成及优化方法,用于解决滚仰式导引头跟踪回路角增量指令的提取问题。介绍了一种滚仰式导引头结构组成及其工作原理;根据脱靶量信息和探测器焦距给出了滚转和俯仰框架的位置回路角增量;将角增量标定为以两框架零位为起点的绝对角位置指令,其中,俯仰框的角位置指令标定区为［0, π/2］,滚转框的角位置指令标定区为［0,2π)。依据减小滚转框角增量的原则,将导引头滚转框的当前框架角在［0,2π)内均分成4个象限,在不同的当前框架角范围内给出了相应的角增量优化策略。最后,设计了角增量优化指令的半实物实验以验证方法的可行性。实验结果表明：文中提出的指令提取和优化方法可以实现对目标的跟踪,跟踪误差为0.149 4°。

A method to generate and optimize angle increments was put forward to extract the tracking loop instruction of a roll-pitch seeker. Firstly, one kind of the roll-pitch seeker was introduced, and its mechanical construction and operation principle were given. Then, the angle increments of roll gimbals and pitch gimbals were calculated based on the target deviation on the image plane and the optical focal length. Both roll gimbal instruction and pitch gimbal instruction were calibrated to be absolute angular position instructions from the zero position respectively. The absolute angular position instruction for the pitch gimbals was calibrated to be from zero to π/2, while that for the roll gimbals was calibrated to be from zero to 2π. According to the principle of minimizing the angle increment of roll gimbals as small as possible, four different optimized control strategies were designed. On the basis of mentioned strategies,the feedback roll gimbal angle was separated into four quadrants. Finally, a simulation and a test were implemented to check the validity of the presented algorithm. Results show that the submitted generation and optimization of angle increments for roll-pitch seekers perform effectively and the tracking error is less than 0.15°.