| Experimental Results in Synchronous-Clock One-Way-Travel-Time Acoustic Navigation for Autonomous Underwater Vehicles Recent countries visiting this post |  |
 | 9 | United States |
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| Experimental Results in Synchronous-Clock One-Way-Travel-Time Acoustic Navigation for Autonomous Underwater Vehicles Recent countries visiting this post | |
| 9 | United States |
| 1 | |
| 1 | China |