06628941 is referenced by 101 patents and cites 3 patents.

An airborne constellation is disclosed with a plurality of individual lighter-than-air platforms spaced apart above a contiguous geographic area within a predetermined altitude range so that ubiquitous line of sight coverage of the geographic area is provided. Each of the plurality of platforms include an enclosure holding a regulated volume of low density gas for buoyancy of the platforms. Each of the plurality of platforms further includes a signal transmitting device attached to the enclosure by which signals from the platform may be transmitted to the contiguous geographic area.

Title
Airborne constellation of communications platforms and method
Application Number
9/342440
Publication Number
6628941 (B2)
Application Date
June 29, 1999
Publication Date
September 30, 2003
Inventor
Eric A Frische
Plano
TX, US
Gerald M Knoblach
Chandler
AZ, US
Agent
Morrison & Foerster
US
Assignee
Space Data Corporation
AZ, US
IPC
H04Q 7/20
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