【摘要】 为了增强零闭锁激光陀螺的航天环境适应性能力,分析对比了国内外多种激光陀螺抗辐照解调方案。提出了基于菲涅尔透镜的抗辐照解调方案,并对其合理性进行了理论论证。分析了使用菲涅尔透镜引入的误差,及其对陀螺信号信噪比的影响。完成了基于菲涅尔透镜方案的原理样机装配,并通过试验对方案的有效性进行了验证。研究结果表明:基于菲涅尔透镜的抗辐照方案适用于零闭锁激光陀螺,并易于工程实现。能够显著降低ZLG对光电管的尺寸要求,从而增强其整体抗辐照能力。该方案对于提高零闭锁激光陀螺的航天环境适应性具有一定的工程实用价值。更多还原

【Abstract】 In order to improve the adaptability of zero-lock laser gyroscope(ZLG) to astronautic environment, several RLG’s radiation-resistant projects are analyzed and compared, and a radiation-resistant demodulating scheme based on Fresnel lens is presented based on the theoretical validation of its rationality. The error induced by Fresnel lens and its influence on the ZLG’s signal-to-noise are analyzed. The assembly of the principled prototype is accomplished based on the Fresnel-lens scheme, and the validity of the scheme is confirmed by experiments with the prototype. Test results show that the proposed scheme is applicable to the ZLG, and is easy to realize in engineering project, which can significantly reduce the size requirements of the photodiodes and improve the total radiation-resistant ability. This scheme has practical engineering value in improving the ZLG’s space environment adaptability.更多还原