Abstract
By studying the realization technology of security isolation and unidirectional transmission, a cross network unidirectional transmission scheme of test data based on physical isolation and non feedback one-way loop is proposed, a cross network unidirectional transmission system of spacecraft test data based on optical shutter is constructed, which realizes the cross network quasi real-time unidirectional transmission of spacecraft test data, solves the contradiction between synchronization timeliness and security of heterogeneous network data, and is applied in multiple spacecraft tests, Good results have been achieved.
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