一、前言本文介绍用于宇宙飞行器上的超稳定原子钟的研制。其要求为体积小、重量轻、功率消耗低并在-54°至+71℃温度范围内具有±5×10~(-14)长期稳定度。由此要求可以看出,其稳定度要比现有原子钟高一千倍,而且在宇宙飞行器的恶劣环境下要保持这样高的稳定度。 I. Introduction This article describes the development of ultra-stable atomic clocks for use in spacecraft. Its requirements are small size, light weight, low power consumption and long-term stability of ± 5 × 10 ~ (-14) over a temperature range of -54 ° to + 71 ° C. From this requirement, it can be seen that its stability is one thousand times higher than that of existing atomic clocks and that such high stability should be maintained in harsh environments of space vehicles.