A Solution to Noise in Downlink Astronaut Voice
Boyang Liu · Journal of Spacecraft TT&C Technology · 2010
Voice communication between space and ground is a key part of Shenzhou 7 manned space mission.It was discovered during intercommunication tests that the downlink selective voice including USB and VHF received by Control Center-A Hall Loudspeaker was unclear.Following discussions on transfer and tests of two types of voices,this paper analyzes the reasons of unclear voice.Solutions to the problem are proposed.Finally,a design for routing of downlink selective voice into the Hall Loudspeaker System is given based on actual tests and comparisons.