| 摘要 |
A balloon may include an optical-communication component, which may have a pointing axis. A pointing mechanism could be configured to adjust the pointing axis. The optical-communication component could be operable to communicate with a correspondent balloon via a free-space optical link. For example, the optical-communication component could include an optical receiver, transmitter, or transceiver. A positioning system could be configured to acquire a first location, which could be based on the location of the balloon. A controller could be configured to acquire a second location, which could be based on a location of the correspondent balloon. The controller may determine an approximate target axis based on the first location and the second location. The controller may control the pointing axis of the optical-communication component within a scanning range based on the approximate target axis to establish the free-space optical link with the correspondent balloon.
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