From Event: SPIE Optical Engineering + Applications, 2017
Revisiting time and global coverage are two major requirements for most of the remote sensing satellites. Constellation of satellites can get the benefit of short revisit time and global coverage. Typically, remote sensing satellites prefer to choose Sun Synchronous Orbit (SSO) because of fixed revisiting time and Sun beta angle. The system design and mission operation will be simple and straightforward. However, if we focus on providing remote sensing and store-and-forward communication services for low latitude countries, Sun Synchronous Orbit will not be the best choice because we need more satellites to cover the communication service gap in low latitude region. Sometimes the design drivers for remote sensing payloads are conflicted with the communication payloads. For example, lower orbit altitude is better for remote sensing payload performance, but the communication service zone will be smaller and we need more satellites to provide all time communication service. The current studies focus on how to provide remote sensing and communication services for low latitude countries. A cost effective approach for the mission, i.e. constellation of microsatellites, will be evaluated in this paper.
Chia-Ray Chen, Feng-Tai Hwang, and Chuang-Wei Hsueh, "Mission studies on constellation of LEO satellites with remote-sensing and communication payloads," Proc. SPIE 10402, Earth Observing Systems XXII, 1040207 (Presented at SPIE Optical Engineering + Applications: August 06, 2017; Published: 5 September 2017); https://doi.org/10.1117/12.2273482.
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