A method and system are disclosed for providing WAAS like corrections using a server and processor on the Internet. For one method, satellite measurement data is collected. Satellite position error corrections are computed using the collected satellite measurement data. The computed satellite position...http://www.google.com.hk/patents/US6741935?utm_source=gb-gplus-share專利 US6741935 - Method and system for providing wide area augmentation system (WAAS) like corrections using a server and processor on the internet