System and method for providing gnss corrections

Abstract

A method for disseminating corrections can include receiving a set of satellite observations at a GNSS receiver; transmitting the corrections to the GNSS receiver, wherein the corrections; and determining a position of the GNSS receiver, wherein the set of satellite observations are corrected using the corrections. A system for disseminating corrections can include a positioning engine operating on a computing system collocated with a GNSS antenna; and a corrections generator operating on a computing system remote from the GNSS antenna, wherein the corrections generator is configured to transmit corrections to the positioning engine, wherein the positioning engine is configured to determine a high accuracy position of the GNSS antenna using the corrections, wherein the corrections are rebroadcast to the positioning engine with a time period less than an update time period for changing the corrections.

We claim: 
     
         1 . A method for disseminating antenna phase center (APC) corrections comprising:
 receiving a set of satellite observations at a GNSS receiver from a plurality of in-view satellites;   transmitting, from a cloud computing system to a positioning engine collocated with the GNSS receiver, the APC corrections associated with the plurality of in-view satellites to the GNSS receiver, wherein the APC corrections comprise, for each satellite of the plurality of in-view satellites:
 a phase center offset (PCO) in an x, a. y, and a z coordinate; 
 a phase center variation (PCV) for a plurality of elevation angles; and 
   at the positioning engine, determining a position of the GNSS receiver, wherein the set of satellite observations are corrected using the APC corrections.