冯婕, 李豫东, 文林, 郭旗. CMOS传感器辐射损伤对视觉位姿测量系统性能的影响机制[J]. 红外与激光工程, 2017, 46(S1): 69-73. DOI: 10.3788/IRLA201746.S117002
引用本文: 冯婕, 李豫东, 文林, 郭旗. CMOS传感器辐射损伤对视觉位姿测量系统性能的影响机制[J]. 红外与激光工程, 2017, 46(S1): 69-73. DOI: 10.3788/IRLA201746.S117002
Feng Jie, Li Yudong, Wen Lin, Guo Qi. Influence mechanism of CMOS sensor radiation damage on the performance of visual position and attitude measurement system[J]. Infrared and Laser Engineering, 2017, 46(S1): 69-73. DOI: 10.3788/IRLA201746.S117002
Citation: Feng Jie, Li Yudong, Wen Lin, Guo Qi. Influence mechanism of CMOS sensor radiation damage on the performance of visual position and attitude measurement system[J]. Infrared and Laser Engineering, 2017, 46(S1): 69-73. DOI: 10.3788/IRLA201746.S117002

CMOS传感器辐射损伤对视觉位姿测量系统性能的影响机制

Influence mechanism of CMOS sensor radiation damage on the performance of visual position and attitude measurement system

  • 摘要: 视觉位置姿态测量系统是在轨服务系统的重要组成部分。为了准确测量目标航天器部件的位置和姿态,针对CMOS (Complementary Metal-Oxide-Semiconductor)图像传感器在空间带电粒子辐照下光电敏感参数衰降,造成视觉系统性能退化的问题,利用CMOS传感器辐射损伤对视觉系统性能影响的理论与实验相结合的研究方法,结果显示:对CMOS传感器进行3.0 MeV质子辐照后,随着辐照注量增加,位置解算标准差迅速增大,当质子辐照注量为7.361010 p/cm2时,标准差为辐照前的4.41~17.86倍。姿态解算标准差随辐照注量增加而降低,姿态解算标准差在质子辐照注量为7.361010 p/cm2时为辐照前的2.76~5.85倍。姿态解算精度要优于位置解算精度,这说明质子辐照对视觉系统位置解算精度的影响更大。该结果为掌握视觉系统的空间辐射效应奠定了基础。

     

    Abstract: The vision position and attitude measurement system is an important part of the service system on orbit. Accurate measurements of the position and attitude of target spacecraft components are the prerequisite for successful completion of service operations on orbit. However, in the space radiation environment, the photoelectric sensitive parameters of the CMOS image sensor are attenuated under the irradiation of the space charged particles, which results in the performance degradation of the visual position attitude measurement system. After the CMOS sensor is irradiated by 3.0 MeV proton, the standard deviation of position calculation increases rapidly with the increase of irradiation fluence. When the proton fluence is 7.361010 p/cm2, the standard deviation of position calculation is 4.41-17.86 times as much as before irradiation. The standard deviation of attitude calculation decreases with the increase of radiation fluence. When the proton fluence is 7.361010 p/cm2, the standard deviation of attitude calculation is 2.76-5.85 times as much as before irradiation. The accuracy of attitude calculation is better than that of position calculation. That is to say, the proton irradiation has a greater effect on the position calculation accuracy of the visual sensor. The results lay the foundation for mastering the space radiation effect of vision system.

     

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