Astronauts Josh Cassada and Frank Rubio installed and deployed an ISS Roll Out Solar Array (iROSA). The rollout occurred while the International Space Station was flying over the Pacific Northwest.
Abstract: The stress field of steel members in service is unevenly distributed under complicated loads. The existing single-path ultrasonic (SPU) sensors can only measure stress in a single ...
Abstract: This letter presents a scannable directional modulation secure communication method based on a single-sideband time-modulated array. By optimizing the modulation parameters that generate ...
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