SatNOGS Project

Our project is to build and contribute improvements to an existing open source ground station design. This project called SatNOGS (Satellite Networked Open Ground Station) was started a year ago by the Libre Space Foundation in Athens, Greece to address the problem of data downlink from Low Earth Orbiting Satellites. We are most interested in improving the ease of construction of the ground station to enable more people to deploy ground stations

Bazaar Scheduling: Scheduling Algorithms for Federated Networks of Independent Satellite Ground Stations

The overall goal of the project is to develop a multi-network, multi-satellite ground station scheduling protocol and companion scheduling algorithm. A critical component in this effort is the creation of an automated scheduling system to increase access times (sec/day of potential communication) for low earth orbiting satellites, due to the recent increase in small satellite launches. The summer\u27s major task was to create a simulation framework to test the performance of potential algorithms as no such system yet exists. Phase one was to understand orbital parameters of low earth orbiting satellites and used PyEphem to do the astronomical calculations necessary to find the passes overhead of certain ground stations. Phase two involved taking those candidate passes and analyzing multiple parameters, such as access time and gaps in satellite coverage. Phase three involves evaluating different strategies using the new simulator to determine the most effective scheduling implementation. Future work includes incorporating the Python code into the SatNOGS ground station network as the reference implementation and continued optimization of scheduling to accommodate individual ground station and network priorities

Inside-Out Regulation of L1 Conformation, Integrin Binding, Proteolysis, and Concomitant Cell Migration

The ectodomain structure and function of the neural cell adhesion molecule L1 is shown to be regulated by the intracellular phosphorylation of a novel threonine, T1172. In pancreatic cancer cells, T1172 exhibits steady-state saturated phosphorylation, an event regulated by CKII and PKC, and which further regulates cell migration