摘要
对小型化星敏感器的软、硬件及光学设计技术进行了研究。通过光学系统中高稳定的光机结构设计、大通光孔径低畸变的镜头和40°太阳保护角的遮光罩设计达到光学指标。硬件设计采用轻小型低功耗电路、FPGA完成图像采集和星点提取技术,软件设计采用改进型全天识别算法、具快速主动预估功能的星跟踪技术。小型化星敏感器产品地面验证及应用结果表明:产品的主要性能达到指标要求。
The technology of software, hardware and optics design of miniature star sensor was studied in this paper. The highly stable optical-mechanical structure, shot with large exit aperture and low distortion, sunshield with light shielding angle of 40° were adopted in the optical-mechanical system to gain the optical performance. The light and small type circuit and low power consumption, technology of image acquisition and star extraction by FPGA were used in hardware design. The updated recognition algorithm of all sky star map and tracking algorithm with function of fast active prediction were used in software design. The ground verification and application the miniature star sensor showed that the capability of the product would meet the requirement.
出处
《上海航天》
2013年第4期69-78,共10页
Aerospace Shanghai
关键词
低功耗电路
图像采集
星点提取
星跟踪
Low power consumption circuit
Star acquisition
Star extraction
Star tracking
