Method of generating correlation function, method of tracking signal and signal tracking system
AssigneeResearch & Business Foundation Sungkyunkwan University
InventorsKeunhong CHAE, Seokho YOON
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Abstract
A method of generating a correlation function, a method of tracking a signal, and a signal tracking apparatus are provided. The method of generating a correlation function involves receiving a CBOC(6,1,1/11) signal, interpreting a subcarrier pulse period of the CBOC(6,1,1/11) signal as a subcarrier pulse period of BOCsin(6,1), combining partial correlation functions constituting an autocorrelation function of CBOC(6,1,1/11) to generate a correlation function, and weighted-combining the correlation function to generate an unambiguous correlation function.
Claims17
A method of generating a correlation function, the method comprising:
- receiving a CBOC(6,1,1/11) signal;
- interpreting a subcarrier pulse period of the CBOC(6,1,1/11) signal as a subcarrier pulse period of BOCsin(6,1);
- combining partial correlation functions constituting an autocorrelation function of CBOC(6,1,1/11) to generate a correlation function;
- and
- weighted-combining the correlation function to generate an unambiguous correlation function.
A method of tracking a signal in a terminal that synchronizes a CBOC signal, the method comprising:
- receiving, by the terminal, a CBOC(6,1,1/11) signal;
- interpreting a subcarrier pulse period of the CBOC(6,1,1/11) signal as a subcarrier pulse period of BOCsin(6,1);
- combining partial correlation functions constituting an autocorrelation function of CBOC(6,1,1/11) to generate a correlation function;
- weighted-combining the combined partial correlation functions to generate an unambiguous correlation function;
- and
- tracking the CBOC signal using the unambiguous correlation function.
A signal tracking apparatus that synchronizes a CBOC signal, the apparatus comprising:
- a reception unit configured to receive a CBOC(6,1,1/11) signal;
- a partial correlation function generation unit configured to interpret a subcarrier pulse period of the CBOC(6,1,1/11) signal as a subcarrier pulse period of BOCsin(6,1) to generate a partial correlation function;
- a correlation function generation unit configured to combine the partial correlation functions to generate a correlation function of the CBOC(6,1,1/11) signal;
- an unambiguous correlation function generation unit configured to weighted-combine the correlation function to generate an unambiguous correlation function;
- and
- a determination unit configured to track a signal using the unambiguous correlation function.
Dependencies are inferred from the claim text.