Attitude Sensor Based Autonomous Navigation Research For GEO Spacecrafts;

This paper analyzes a typical GEO space radiation environment by using software package Space Radiation 5.

The paper describes briefly ESA s searching techniques for small debris in geostationary orbit and some details of debris investigation in geostationary orbi

An effective way to solve this problem is raising low orbit to geosynchronous orbit.

03～45 keV) and the spacecraft(S/C) surface sunlit charging potential in the plasma sheet region at the geosynchronous orbit and their dependence on the local time(LT) and the epoch time(ET) with respect to storms of three categories:moderate, intense and super storms, based on different geomagnetic activity levels as measured by Dst index corrected by the solar wind dynamic pressure.

Based on the radiation transportation theory and the interaction principle between particle and material,it has built a mathematical and physical model of inelastic scattering gamma-ray by near-earth space high intensity neutron source transportation to the geosynchronous orbit.