| US 7,577,524 B2 | ||
| Method and system for data detection in a global positioning system satellite receiver | ||
| Paul A. Underbrink, Lake Forest, Calif. (US); and Steven A. Gronemeyer, Cedar Rapids, Iowa (US) | ||
| Assigned to SiRF Technology, Inc., San Jose, Calif. (US) | ||
| Filed on Sep. 11, 2007, as Appl. No. 11/853,699. | ||
| Application 11/853699 is a division of application No. 11/176022, filed on Jul. 06, 2005, granted, now 7,269,511. | ||
| Application 11/176022 is a division of application No. 10/792143, filed on Mar. 03, 2004, granted, now 6,961,660. | ||
| Application 10/792143 is a continuation of application No. 09/552759, filed on Apr. 18, 2000, granted, now 6,714,158. | ||
| Prior Publication US 2008/0169980 A1, Jul. 17, 2008 | ||
| Int. Cl. G01C 21/00 (2006.01) | ||
| U.S. Cl. 701—213 [701/207; 701/214; 342/357.07] | 1 Claim |
| 1. A method of tracking a remote object comprising the steps of:
fitting a remote object with a positioning sensor configured to receive and store positioning information when the remote
object is in a fix position;
positioning the remote object in a fix position such that the positioning sensor is capable of detecting an activation signal;
receiving and storing a predetermined amount of data in the positioning sensor, the data comprising positioning information;
processing the data to determine the location of the fix position;
decoding data encoded upon a signal using a matched filter, the data being demarcated into successive data epochs; and
decoding periodic phase shift-data encoded upon the signal by phase shifts of the data epochs using the matched filter.
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