为了提高测角分辨力，缩小码盘尺寸，并克服传统图像式编码器译码速度慢等缺点，提出了一种单圈绝对式高分辨力编码技术。通过分析码盘刻线与分辨力之间的关系，提出了绝对式单圈移位码编码方法；采用准直光源照射和线阵图像探测器识别的方法实现单圈码盘的译码方式；根据所提出的方法，设计了高分辨力码盘及译码电路。实验采用直径38 mm、刻划有10位编码的单圈码道，成功实现了10位编码的译码。该编码方式较传统采用面阵图像探测器的编码方法具有更快的响应频率。

A high resolution single circle absolute coding technique is proposed to improve angle measure resolution, reduce disk dimensions, and overcome the shortcoming of low speed in traditional image encoder. The single circle absolute coding method is proposed by analyzing the relationship between disk reticle and resolution, a decoding method is proposed by using collimation light source and linear array image sensors, and the high resolution disk and decoding circuit are designed based on the proposed method. In the experiment, the diameter of single circle disk is 38 mm, the digit is 10, and the decoding of 10 bits coding is achieved. The proposed method has faster response frequency than the traditional coding method with the array image detector.