| 摘要 |
A motor-drive device for sensors around a spherical electromagnetic lens, for example a Luneberg type lens using in a system of transmission and/or reception, comprises, for each module, at least one piezoelectric motor rigidly connected to the module, the module moving in the vicinity of the surface of the lens by the reptation of the piezoelectric motor on this surface. The disclosed device can be applied especially to receivers and/or transmitters carrying out multiple-satellite tracking, for example in the field of communications by orbiting satellites.
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