초록 ▼

A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform

A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform systems (10) and GEO satellite systems to share the radio frequency spectrum without interference, and improves the coverage area provided by a stratospheric platform system by allocating stratospheric platforms (12) to specific coverage areas in combination thereby increasing coverage capacity in high traffic areas.

대표청구항 ▼

A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform

A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform systems (10) and GEO satellite systems to share the radio frequency spectrum without interference, and improves the coverage area provided by a stratospheric platform system by allocating stratospheric platforms (12) to specific coverage areas in combination thereby increasing coverage capacity in high traffic areas. odule of a first type of modules according to claim 2, characterized in that said at least two magnetically active areas (250,260) are all provided by said at least one ferromagnetic element (21,22). 5. A module of a first type of modules according to claim 2, characterized in that a part (88,90) of said at least two magnetically active areas is provided by said at least one active magnetic element (42), and a part (92,94) by said at least one ferromagnetic element (40). 6. A module according to claim 2, characterized in that it consists of one ferromagnetic element in the form of an elongated cylindrical ferromagnetic yoke (6,30) and of two active magnetic elements in the form of an upper cylindrical magnet (2, 33) and a lower cylindrical magnet (3, 34), said upper magnet (2, 33) and lower magnet (3, 34) being connected in series by the interposition of said cylindrical yoke (6,30). 7. A module according to claim 6, characterized in that at the upper and lower bases of said yoke (6) an upper (4) and respectively lower (5) slot is formed for housing said upper (2) and respectively lower (3) magnets, the lateral walls of said upper (4) and lower (5) slots being provided distanced from the lateral walls of said upper (2) and respectively lower (3) magnets. 8. A module of the first type according to claim 2, characterized in that it consists of two ferromagnetic elements in the form of a first (21) and a second (22) rectangular ferromagnetic sector, and of one active magnetic element in the form of a rectangular magnet (20) whose two polar surfaces (23, 24) are totally covered by a wall of said first sector (21) and the other by a wall of said second ferromagnetic sector (22), and said first (21) and second (22) sectors projecting from said polar surfaces (23, 24) in the direction orthogonal to the axis of polarization of the rectangular magnet (20). 9. A module of the first type for an assembly according to claim 2, characterized in that it consists of one ferromagnetic element in form of one substantially rectangular ferromagnetic bar (40), and of one magnetic active element in form of one a magnet (42), also rectangular, which has equal thickness in relation to the ferromagnetic bar (40) and which is separated longitudinally from the bar (40) by a layer of non magnetic material, said magnet being polarized perpendicularly to the longitudinal extension of the module. 10. A module according to claim 2, characterized in that it consists of one ferromagnetic element in the form of a substantially rectangular ferromagnetic bar (44) and of two magnetic active elements in form of a first (47) and a second (48) substantially rectangular magnet polarized perpendicularly to the longitudinal extension of the module and arranged with opposite polarization above the opposite ends of the ferromagnetic element (44) in order to be connected in series via said ferromagnetic element (44). 11. A module according to claim 2, characterized in that it consists of one ferromagnetic element in form of an elongated ferromagnetic integration unit (55) and of a plurality of magnetic active elements in form of a plurality of longitudinally aligned magnets (58) inserted in corresponding housing (56) provided along the length of said integration unit (55), said plurality of longitudinally aligned magnets (58) being polarized perpendicularly to the longitudinal axis of the elongated ferromagnetic integration unit (55). 12. A module according to claim 2, characterized in that a removable engagement is provided between said at least one magnetic active element (2 and 3, 33 and 34, 42, 47 and 48, 58) and said at least one ferromagnetic element (6, 30, 40, 44, 55). 13. A module according to claim 12, characterized in that a removable engagement is further provided between said at least one ferromagnetic element (6, 30, 40, 44, 55) and a non magnetic matrix (7, 29, 74, 76, 106) wherein said at least one active magnetic element (2 and 3, 33 and 34, 42, 47 and 48,