We propose a new DRR (Disturbance Rejection Rate) compensation method of a roll-pitch seeker based on ESO (extended state observer). The characteristics of a roll-pitch seeker and the DRR definition of two frames of a roll-pitch seeker are analyzed. The influence of different interference torques and different frequency bandwidths on the compensation effect is analyzed. Modeling and simulation of the guidance system of a roll-pitch seeker with the parasitic loop of DRR are carried out. Influence of the new DRR compensation method on dimensionless miss distance is analyzed. Mathematical simulation is established to compare the new ESO-based DRR compensation method with the existing methods such as the feedforward method and Kalman filter method. The analysis and simulation results show that the new ESO-based DRR compensation method has the advantages of high precision, good applicability, and easy adjustment, and the new method can effectively reduce the dimensionless miss distance with different types of input errors. The research of this proposed new method can provide a reference for the latest generation air-to-air missile operations in a high-altitude and high-speed environment and the high-precision research of a roll-pitch seeker.

中文翻译：

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基于ESO的滚动俯仰寻求者DRR补偿新方法。

我们提出了一种基于ESO（扩展状态观测器）的俯仰俯仰搜索器的DRR（干扰抑制率）补偿方法。分析了滚动俯仰搜索器的特性和两个帧的DRR定义。分析了不同干扰转矩和不同频率带宽对补偿效果的影响。进行了带有DRR寄生回路的俯仰俯仰搜索器制导系统的建模与仿真。分析了新的DRR补偿方法对无量纲错过距离的影响。建立了数学仿真，以将基于ESO的新DRR补偿方法与前馈方法和Kalman滤波方法等现有方法进行比较。分析和仿真结果表明，新的基于ESO的DRR补偿方法具有精度高，适用性强，调整容易等优点，可以有效地减小不同类型输入误差下的无量纲错位距离。该新方法的研究可为在高空，高速环境下最新一代空空导弹的作战以及滚动俯仰搜索器的高精度研究提供参考。