Inter-satellite communication device, associated satellite and associated constellation of satellites
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-010/00
H04B-007/185
H04B-010/29
H04B-010/40
출원번호
US-0586862
(2017-05-04)
등록번호
US-10003400
(2018-06-19)
우선권정보
FR-16 00741 (2016-05-04)
발명자
/ 주소
Sotom, Michel
Le Kernec, Arnaud
Francastel, Agnès
Potuaud, Dominique
Fernandez, Gilles
출원인 / 주소
THALES
대리인 / 주소
Baker & Hostetler LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
An inter-satellite communication device for satellites orbiting within a constellation of satellites comprises at least one optical terminal dedicated to intra-orbital plane communication links and at least one optical terminal dedicated to inter-orbital plane communication links, each optical termi
An inter-satellite communication device for satellites orbiting within a constellation of satellites comprises at least one optical terminal dedicated to intra-orbital plane communication links and at least one optical terminal dedicated to inter-orbital plane communication links, each optical terminal dedicated to intra-orbital plane communications configured to transmit and receive optical signals with an optical terminal of an identical satellite orbiting in the same orbital plane, each optical terminal dedicated to inter-orbital plane communications configured to transmit and receive optical signals with an optical terminal of an identical satellite in an orbital plane adjacent over the entirety of its orbit in its orbital plane and each optical terminal dedicated to inter-orbital plane communications having a field of regard such that the half-angle at the vertex of the latter is larger than the maximum value of the azimuthal angle over a revolution around the Earth.
대표청구항▼
1. An inter-satellite communication device for satellites configured to orbit within a constellation of satellites, a satellite comprising a satellite platform, said device comprising a group of at least one optical terminal dedicated, under nominal conditions, to intra-orbital plane communication l
1. An inter-satellite communication device for satellites configured to orbit within a constellation of satellites, a satellite comprising a satellite platform, said device comprising a group of at least one optical terminal dedicated, under nominal conditions, to intra-orbital plane communication links and a group of at least one optical terminal dedicated, under nominal conditions, to inter-orbital plane communication links,each optical terminal dedicated to intra-orbital plane communications being configured to transmit and receive optical signals with an optical terminal of an identical satellite orbiting in the same orbital plane,each optical terminal dedicated to inter-orbital plane communications being configured to transmit and receive optical signals with an optical terminal of an identical satellite in an orbital plane that is adjacent over the entirety of its orbit in its orbital plane andeach optical terminal dedicated to inter-orbital plane communications being configured and arranged within the inter-satellite communication device so as to have a field of regard such that the half-angle at the vertex θm of the latter is larger than the maximum value of the azimuthal angle θ over a revolution around the Earth. 2. The device as claimed in claim 1, wherein said device comprises at least four optical inter-satellite link terminals, a first group of two optical terminals being located at the front of said satellite and a second group of two optical terminals being located at the rear of said satellite,each group of optical terminals comprising one optical terminal dedicated, under nominal conditions, to intra-orbital plane communication links and one optical terminal dedicated, under nominal conditions, to inter-orbital plane communication links,the two optical inter-satellite link terminals of one and the same group being separated by a predetermined distance such that the optical beam of the inter-orbital plane communication link is never occulted by another optical terminal of the satellite platform during its orbit in the orbital plane. 3. The device as claimed in claim 2, wherein the two optical terminals of each group are placed in a position that is symmetrical with respect to an axis that is parallel to the direction of the trajectory of the satellite and passes through the centre of the platform. 4. The device as claimed in claim 1, wherein the optical terminals are identical and interchangeable. 5. The device as claimed in claim 1, wherein the intra-plane and inter-plane communication links are transmitted and received in a band of wavelengths that is divided into two sub-bands, the optical terminals of the first group transmitting optical beams in the first sub-band and receiving optical beams in the second sub-band, the optical terminals of the second group transmitting optical beams in the second sub-band and receiving optical beams in the first sub-band. 6. The device as claimed in claim 1, wherein the intra-plane and inter-plane communication links are transmitted and received with two different polarizations, the optical terminals of the first group transmitting optical beams with a first type of polarization and receiving optical beams with the second type of polarization, the optical terminals of the second group transmitting optical beams with the second type of polarization and receiving optical beams with the first type of polarization. 7. The device as claimed in claim 1, wherein optical beams are transmitted and received in the optical C-band. 8. The device as claimed in claim 1, wherein optical beams are transmitted and received in the optical L-band. 9. The device as claimed in claim 1, wherein the satellite follows a non-stationary orbit. 10. A satellite configured to orbit within a constellation of satellites distributed in multiple orbital planes, comprising a satellite platform on which an inter-satellite communication device according to claim 1 is positioned. 11. A constellation of satellites, comprising a plurality of satellites according to claim 10. 12. The constellation as claimed in claim 11, wherein said satellites follow a non-stationary orbit. 13. The constellation as claimed in claim 11, wherein said satellites follow a low Earth orbit. 14. The constellation as claimed in claim 11, wherein said satellites follow a medium Earth orbit.
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이 특허에 인용된 특허 (6)
Cunningham, James; Grinch, Dean; Fisher, Donald, Acquisition, pointing, and tracking architecture for laser communication.
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