Demonstration on the indexes design of gravity satellite orbit parameters in the low-low satellite-to-satellite tracking mode

Low Earth Orbit Nano Satellite Electrical Power System Design

The following text shows the requirements for LEO satellite’s EPS design, namely the initial mission assessment, the available power budget, the filtering components sizing, the finalized circuit design and the expected efficiency for optimal operation point. One early assessment was the reliability of the photovoltaic array system in terms of how the cells should be laid out: whether in parall...

real-time hybrid orbit determination using satellite to satellite tracking observations

three-dimensional position measurements by global positioning system (gps) provide purely geometrical estimate of low earth orbiters (leos) positions. it provides uninterrupted tracking of the leos in three spatial dimensions or the so-called kinematic orbit. this solution relies heavily on the observations. high frequency observation noise, outlying observations and low redundancy number of me...

Staged Deployment of Communications Satellite Constellations in Low Earth Orbit

The “traditional” way of designing constellations of communications satellites in low Earth orbit is to optimize the design for a specified global capacity. This approach is based on a forecast of the expected number of users and their activity level, both of which are highly uncertain. This can lead to economic failure if the actual demand is significantly smaller than the one predicted. This ...

Analysis of Low Earth Orbit Satellite Networks with Inter-satellite Links

Satellite to Satellite Tracking in the Space-wise Approach

The launch of the champ mission in 2000 has renewed interest in the recovery of the geopotential field from satellite observations which has been a challenging research issue for decades. It was the first dedicated gravity field mission which was followed by the grace spacecrafts. In the grace mission, the high-low (hl-) and the low-low satellite-to-satellitetracking (ll-sst) observations are c...