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Method of communication link acquisition using search pattern

專利號
US10868615B1
公開日期
2020-12-15
申請人
X DEVELOPMENT LLC(US CA Mountain View)
發(fā)明人
Paul Csonka; Edward Allen Keyes
IPC分類
H04B10/27; H04B10/11
技術(shù)領(lǐng)域
beacon,device,200b,200a,search,secondary,beam,primary,optical,pattern
地域: CA CA Mountain View

摘要

Aspects of the disclosure provide for a method of forming a communication link between two communication devices using a primary search pattern and a secondary search pattern. A misalignment between a first optical system of a first communication device and a second optical system of a second communication device is detected. The first optical system is rotated according to the primary search pattern, and the second optical system according to the secondary search pattern. At the second communication device, a set of frames is captured. Then, it is determined whether a beacon beam transmitted from the first communication device is detected in the one or more of the captured frames. When it is determined that the beacon beam is detected, the communication link is formed between the first communication device and the second communication device.

說明書

Referring to FIG. 4, satellite 400 may be an object placed into orbit around the earth and may serve different purposes, such as, for example, military or civilian observation satellites, communication satellites, navigation satellites, weather satellites, and research satellites. The orbit of the satellite 400 varies depending in part on the purpose of the satellite 400. Satellite orbits may be classified based on their altitude from the surface of the Earth as Low Earth Orbit (LEO), Medium Earth Orbit (MEO), and High Earth Orbit (HEO). Geosynchronous Earth Orbit (GEO) is a special case of HEO. Geostationary Earth Orbit (GSO, although sometimes also called GEO) is a special case of Geosynchronous Earth Orbit. Satellites 400 placed in the GEO orbit can “stand still” with respect to a certain location on earth. Thus, a person on earth looking at a satellite 400 in the GEO orbit would perceive that the satellite 400 is not moving. Therefore, the satellites 400 in GEO orbit maintain a position with respect to a location on earth. Thus, a stationary terminal 300 communicating with a satellite 400 in the GEO orbit does not need to keep tracking the satellite 400 as the satellite 400 moves, the stationary terminal 300 only needs to point to a direction of the satellite 400 in its stationary position with respect to the stationary terminal 300.

權(quán)利要求

1
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