该文简述了航天电子产品数字系统中时钟信号的重要性和敏感性。从原理上分析了对时钟信号形成干扰的噪声的主要形式和产生机理。介绍了针对航天电子产品数字系统的时钟信号的匹配与滤波设计方法。形成完善的设计和验证方案,有效地提高了系统的稳定性和可靠性。 This article describes the importance and sensitivity of clock signals in digital systems for aerospace electronics. In principle, the main form and mechanism of the noise which disturb the clock signal are analyzed. This paper introduces the design method of matching and filtering of clock signal for the digital system of aerospace electronics. The formation of a sound design and verification program, effectively improve the stability and reliability of the system.