摘要
为在地面研制期间对载人航天器密封舱内稳态噪声进行有效测量以减小在轨技术风险,理论推导了背景噪声对测量结果的修正值,基于试验影响域、噪声源识别及噪声传播路径分析结果,提出了测量仪器要求,研究了稳态噪声测量方法和试验流程,经载人飞船地面模拟飞行试验验证,轨道舱内稳态噪声测量结果与在轨实测值相差1.4 d B,二者吻合较好。
Effective measurement of the continuous noise in the sealed cabin of manned spacecraft during ground test is an important way to reduce the on-orbit technical risks. The corrected value of the test result was gained by theoretical method. Based on the study of the experimental effect domain, the noise source identification, the noise generation mechanism and the transmit paths, a measurement method of the continuous noise in the manned spacecraft was studied. The ground simulation test and the on-orbit measurement were conducted in the orbit module of the manned spaceship. It is verified that the experimental results accord well with the data on orbit.
出处
《载人航天》
CSCD
2016年第5期576-581,共6页
Manned Spaceflight
关键词
载人航天器
噪声源识别
传播路径
背景噪声
修正值
manned spacecraft
noise source identification
transmit path
background noise
corrected value
