星敏感器是星光惯性复合制导技术的关键设备, 其测量周期或数据刷新速率是衡量星敏感器性能的一项重要技术指标。为满足星光惯性复合制导对星敏感器技术指标的要求,分析了构成星敏感器测量周期的主要环节和影响测量周期的主要因素,在此基础上提出了通过合理调度测量过程子任务的技术方法。该方法使数字星空图像捕获过程和处理过程并行执行,进而提高星敏感器数据刷新速率；并重新设计了某型星敏感器电控系统方案。研究表明,采用提出的技术措施后,星敏感器的数据刷新速率获得了显著的提高,其数据刷新速率由3.70 Hz提高到了6.40 Hz,达到了系统提出的要求。

Star sensor is one of the key instruments in the celestial & inertial navigation system (INS/CNS), and measuring period or update speed is one of the important specifications of it. To satisfy the practical requirements of INS/CNS, the main aspect influencing the data update speed was discussed. A new method was proposed, which made the data acquiring procedure and data processing procedure executed synchronously by arranging subtask reasonably to improve the data update speed of star sensor. The hardware and software of the electronic system which adopted the method were designed properly, and the data update speed of the star sensor was improved from 3.70 Hz to 6.40 Hz, which met the system demand.