Patent ID: 9130644
Filing Date: 2015-09-08
Classification: H04B

Abstract:
1. A customer satellite terminal for providing seamless hand-off from a descending satellite to an ascending satellite in an equatorial MEO constellation at RF, the satellite terminal comprising: a processing device configured to receive a first satellite signal from the descending satellite and a second satellite signal from the ascending satellite, the first satellite signal having a first amplitude, first frequency offset, and first phase and the second satellite signal having a second amplitude, second frequency offset, and second phase; said processing device further configured to conduct a hand-off from the descending satellite to the ascending satellite when the propagation delay from the ascending satellite and the descending satellite are equal, by aligning first and second amplitudes, first and second frequency offsets, and first and second phases; said aligning process includes subtraction on time, amplitude, frequency and phase aligned signals and combining on the time, frequency and phase aligned signals.