Title :
Highly-accurate real-time syntonization using a GPS single-frequency receiver with an intelligent atmosphere forecasting model
Author :
Cheng, C.L. ; Chang, F.R. ; Wang, L.S. ; Tu, K.Y.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A low-cost, highly-accurate real-time GPS carrier phase frequency syntonization system based on a single-frequency receiver is presented. By using the atmosphere free model of the carrier phase with the neural-wavelet filter, and performing the time-difference operation, the low-cost oscillator can be automatically steered to obtain very high frequency accuracy and stability in the short term (1 sec.) as well as in the long term (1 day).
Keywords :
Global Positioning System; atmospheric techniques; digital filters; forecasting theory; frequency stability; neural nets; oscillators; radio receivers; wavelet transforms; 1 day; 1 s; GPS single-frequency receiver; accuracy; atmosphere free model; carrier phase frequency syntonization; highly accurate real-time syntonization; intelligent atmosphere forecasting model; low-cost oscillator; neural-wavelet filter; stability; time-difference operation; Atmosphere; Atmospheric modeling; Clocks; Frequency estimation; Global Positioning System; Neural networks; Oscillators; Power system stability; Predictive models; Real time systems;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418513
