Mobile satellite modem for combined geostationary, medium and low earth orbit satellite operation

1. A method comprising:

triggering synchronization of a satellite modem to a carrier frequency of a beam of a satellite;

retrieving an ephemeris information for the satellite and a beam configuration information for the beam;

calculating a velocity of the satellite per the ephemeris information; and

adjusting a carrier frequency of the satellite modem when communicating via the beam to compensate for a doppler offset induced in the carrier frequency by the velocity,

wherein the satellite has a satellite type selected from a Geosynchronous Earth Orbit (GEO), Medium Earth Orbit (MEO) or Low Earth Orbit (LEO) type of satellite, and the satellite type is different than a satellite type of an immediately preceding synchronization.

2. The method of claim 1 , further comprising synchronizing a timing of the communicating via the satellite modem to a gateway.

3. The method of claim 1 , further comprising synchronizing a transmit power of the transmitting from the satellite modem.

4. The method of claim 1 , wherein the adjusting further compensates for a UT movement induced doppler offset in the carrier frequency.

5. The method of claim 1 , wherein the adjusting further compensates for a velocity of the satellite relative to a gateway.

6. The method of claim 1 , further comprising directing an antenna controller to point an antenna to a real-time location of the satellite.

7. The method of claim 1 , further comprising repointing to a new satellite having a same satellite type as the satellite type.

8. The method of claim 1 , wherein the triggering comprises one or more of receiving a message to synchronize, determining that the satellite modem is within a coverage area of the satellite, imminent arrival of the satellite modem into the coverage area of the satellite, and imminent departure of the satellite modem from a current coverage area.

9. The method of claim 1 , wherein the retrieving comprises accessing an ephemeris repository via a satellite link to retrieve the ephemeris information.

10. The method of claim 1 , wherein the communicating comprises receiving and transmitting.

11. A computing apparatus comprising:

a processor; and

a memory storing instructions that, when executed by the processor, configure the apparatus to:

trigger synchronization of a satellite modem to a carrier frequency of a beam of a satellite;

retrieve an ephemeris information for the satellite and a beam configuration information for the beam;

calculate a velocity of the satellite per the ephemeris information; and

adjust a carrier frequency of the satellite modem when communicating via the beam to compensate for a doppler offset induced in the carrier frequency by the velocity,

wherein the satellite has a satellite type selected from a Geosynchronous Earth Orbit (GEO), Medium Earth Orbit (MEO) or Low Earth Orbit (LEO) type of satellite, and the satellite type is different than a satellite type of an immediately preceding synchronization.

12. The computing apparatus of claim 11 , wherein the instructions further configure the apparatus to synchronize a timing of the communicating via the satellite modem to a gateway.

13. The computing apparatus of claim 11 , wherein the instructions further configure the apparatus to synchronize a transmit power of the transmitting from the satellite modem.

14. The computing apparatus of claim 11 , wherein the adjusting further compensates for a UT movement induced doppler offset in the carrier frequency.

15. The computing apparatus of claim 11 , wherein the adjusting further compensates for a velocity of the satellite relative to a gateway.

16. The computing apparatus of claim 11 , wherein the instructions further configure the apparatus to direct an antenna controller to point an antenna to a real-time location of the satellite.

17. The computing apparatus of claim 11 , wherein the instructions further configure the apparatus to repoint to a new satellite having a same satellite type as the satellite type.

18. The computing apparatus of claim 11 , wherein the triggering comprises one or more of receiving a message to synchronize, determine that the satellite modem is within a coverage area of the satellite, imminent arrival of the satellite modem into the coverage area of the satellite, and imminent departure of the satellite modem from a current coverage area.

19. The computing apparatus of claim 11 , wherein the retrieving comprises access an ephemeris repository via a satellite link to retrieve the ephemeris information.

20. The computing apparatus of claim 11 , wherein the communicating comprises receive and transmitting.