X-TOS:
The X-TOS project, originally a graduate space systems design exercise at MIT, designed a
mission for collecting information about the Earth’s ionosphere necessary for the updating of the
AFRL atmospheric drag model. The project was motivated by the poor quality of current
atmospheric drag models when used for predictions of re-entry time and location for
uncontrolled bodies such as spent satellites.
C-TOS:
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B-TOS:
The B-TOS study was the first carried out using formal multi-attribute utility methods. The user
needs involved four different measurements. The system architecture included a swarm of small “daughter” vehicles surrounding a central “mother” vehicle. Despite this complexity, the
analyses ultimately revealed a simple dominant trade, between the number of daughter vehicles
and the accuracy of one of the desired measurements.
A-TOS:
The A-TOS (Terrestrial observer swarm A) study was a proposed swarm of identical small satellites used to
collect ionospheric data. The system was expected to collect three distinct types of data found in
different regions of the ionosphere. The A-TOS study was carried out using a prototype version
of the current process. It provided a first experience in the emergent lessons possible with
trade space exploration.
Space Tug:
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Small Diameter
Bomb:
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Space-Based Radar:
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