Yi Yang Lin

US Patent:

20140185655, Jul 3, 2014

Filed:

Jun 8, 2012

Appl. No.:

13/996974

Inventors:

Anthony L. Chun - Los Altos CA, US
Yi Lin - Beaverton OR, US

International Classification:

H04B 1/7073
H04B 1/709

US Classification:

375149

Abstract:

An approach is provided for correcting a reference clock of a GPS receiver. The approach involves determining one or more frequency offset values. The approach also involves determining one or more codes associated with one or more satellites. The approach further involves determining a second code associated with the one or more satellites. The approach additionally involves determining one or more delay values between the second code and the one or more first codes. The approach also involves determining one or more proportional values based on the one or more delay values and a determined correlation. The approach further involves determining one or more correlation peak values and determining one or more estimated frequency offset error values based on the one or more correlation peak values. The approach additionally involves causing a calibrated reference clock frequency value to change to a recalibrated reference clock frequency value based on the estimated frequency offset error values.