Options for coordinated multi-point sensing in the lower thermosphere

A satellite mission for synchronized multi point measurements over tens of km in the lower thermosphere is possible at low cost and in a short time fr ame. This paper offers three options for providing coordinated multi-point sensing in the lower thermosphere. The options have quite different implica tions and idiosyncrasies, and possibly quite different costs and values. We invite members of the thermospheric research community to provide feedback on these concepts and how they might be used to best advantage. The author s have experience with proposing and pursuing small satellite missions, esp ecially using space tether technology. Tether Applications has developed an d delivered SEDS hardware for 3 successful orbital flight tests of tethers. Delta-Utec is specialized in deployment algorithms and has proposed and de veloped the tethered YES satellite. (C) 2001 Elsevier Science Ltd. Ail righ ts reserved.