Distributed orbit modeling and propagation method for a predicted and real-time assisted gps system

Abstract

A mobile device includes a processor for generating a predicted orbital state vector using an initial satellite position and velocity and force model parameters received from a server, the predicted orbital state vector being used to generate satellite navigation data; and a GNSS receiver in communication with the processor for receiving the satellite navigation data; wherein the satellite navigation data is valid for a time period.

1 - 20 . (canceled) 
     
     
         21 . A system for predicting an orbit of a satellite, the system comprising:
 a server;   a device in communication with the server, the device receiving from the server by one of: push, poll and push and poll, an initial satellite position and velocity and force model parameters, the device generating a predicted orbital state vector using the initial satellite position and velocity and force model parameters.   
     
     
         22 . A system as claimed in  claim 21 , wherein the initial satellite position and velocity and force model parameters are received by push. 
     
     
         23 . A system as claimed in  claim 21 , wherein the initial satellite position and velocity and force model parameters are received by WAP push. 
     
     
         24 . A system as claimed in  claim 21 , wherein the initial satellite position and velocity and force model parameters are received by SMS. 
     
     
         25 . A system as claimed in  claim 21 , wherein the device generates satellite navigation data using the predicted orbital state vector, the satellite navigation data valid for a time period. 
     
     
         26 . A system as claimed in  claim 22 , wherein an update is received at the device, the update comprising parameters calculated to compensate for accuracy degradation of the predicted orbital state vector over time. 
     
     
         27 . A method of predicting an orbit of a satellite on a device, the method comprising:
 receiving, by one of: push, poll and push and poll, an initial satellite position and velocity and force model parameters; and   generating a predicted orbital state vector using an initial satellite position and velocity and force model parameters.   
     
     
         28 . A method as claimed in  claim 27 , wherein the initial satellite position and velocity and force model parameters are received by push. 
     
     
         29 . A method as claimed in  claim 27 , wherein the initial satellite position and velocity and force model parameters are received by WAP push. 
     
     
         30 . A method as claimed in  claim 27 , wherein the initial satellite position and velocity and force model parameters are received by SMS. 
     
     
         31 . A method as claimed in  claim 27 , wherein the device generates satellite navigation data using the predicted orbital state vector, the satellite navigation data valid for a time period. 
     
     
         32 . A method as claimed in  claim 28 , comprising receiving an update at the device, the update comprising parameters calculated to compensate for accuracy degradation of the predicted orbital state vector over time. 
     
     
         33 . A device, comprising:
 a processor for receiving initial satellite position and velocity and force model parameters by one of: push, poll and push and poll, and for generating a predicted orbital state vector using the initial satellite position and velocity and force model parameters, the predicted orbital state vector usable for generating predicted satellite navigation data; and   a GNSS receiver in communication with the processor for receiving the broadcast satellite navigation data, the broadcast satellite navigation data valid for a time period, and using the predicted satellite navigation data when no valid broadcast satellite navigation data is available.   
     
     
         34 . A device as claimed in  claim 33 , wherein the initial satellite position and velocity and force model parameters are received by push. 
     
     
         35 . A device as claimed in  claim 33 , wherein the initial satellite position and velocity and force model parameters are received by WAP push. 
     
     
         36 . A device as claimed in  claim 33 , wherein the initial satellite position and velocity and force model parameters are received by SMS. 
     
     
         37 . A device as claimed in  claim 33 , wherein the device is a mobile device. 
     
     
         38 . A mobile device comprising:
 a processor for generating a predicted orbital state vector using an initial satellite position and velocity and force model parameters, the predicted orbital state vector being used to generate satellite navigation data; and   a GNSS receiver in communication with the processor for receiving the satellite navigation data;   wherein the satellite navigation data is valid for a time period.   
     
     
         39 . A mobile device as claimed in  claim 38 , wherein the device is a mobile network connected device. 
     
     
         40 . A mobile device as claimed in  claim 38 , wherein the initial satellite position and velocity and force model parameters are received from a server prior to generation of the predicted orbital state vector.