Small satellites 4 Orbits 3 Satellite antennas 3 Communication satellites 2 CubeSat 2 Cubesat 2 Errors 2 GPS-receivers 2 Geostationary satellites 2 Global positioning system 2 Ground stations 2 LEO satellite 2 LEO satellite orbit 2 Perturbation model 2 Satellite orbit 2 Satellite position 2 Satellites 2 Simplified perturbation model 2 Space debris 2 Tracking (position) 2 Two line elements 2 Two-line element sets 2 simplified perturbations model 2 small satellites 2 two-line element set 2 Air traffic monitoring and surveillance 1 Aircraft detection 1 Batteries 1 Bit error rate 1 Broadcasting 1