Title:
CODE CORRELATOR, POSITIONING DEVICE, CODE CORRELATION METHOD, CODE CORRELATION PROGRAM, POSITIONING METHOD, AND POSITIONING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2010/082635
Kind Code:
A1
Abstract:
Provided is a code correlator which can perform code tracking with high precision by suppressing the influence due to multipath.
BPSK replica code generation sections (312A, 313A) generate a BPSK replica code corresponding to a BPSK signal of PN code. BOC replica code generation sections (312C, 313B) generate a BOC replica code corresponding to a BOC signal where a subcarrier is superimposed on the PN code. Correlation sections (315A, 316A) generate a combined correlation value from a BPSK/BPSK correlation value which is obtained by correlating a received BPSK signal and a BPSK replica code, and a BPSK/BOC correlation value which is obtained by correlating a received BPSK signal and a BOC replica code. A code phase difference calculation section (317) calculates the code phase difference based on the combined correlation value.
Inventors:
YAMADA KATSUO (JP)
Application Number:
PCT/JP2010/050433
Publication Date:
July 22, 2010
Filing Date:
January 15, 2010
Export Citation:
Assignee:
FURUNO ELECTRIC CO (JP)
YAMADA KATSUO (JP)
YAMADA KATSUO (JP)
International Classes:
G01S19/30; G01S19/22; H04B1/707
Foreign References:
| JP2008028470A | 2008-02-07 |
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