发明名称 |
GNSS RECEIVING APPARATUS AND POSITIONING APPARATUS |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a GNSS receiving apparatus capable of widening a range of values of code phase differences which a code initial value can take on when using BOC signals. <P>SOLUTION: A code phase difference detection part 250 computes an E+L correlation value on the basis of the sum of an E-correlation value and an L-correlation value. The code phase difference detection part 250 sets a correction coefficient by multiplying the E+L correlation value by a constant K and adding the product to a P-correlation value. The code phase difference detection part 250 computes a dot product computation value by multiplying a set correlation coefficient by an E-L correlation value made of the difference between the E-correlation value and the L-correlation value. At this time, a phase difference τ2 which determines an Early code signal as a source of the E-correlation value and an Late code signal as a source of the L-correlation value and the constant K are set at such values as to correct the negative-value region of P-correlation characteristics by the positive value regions of the E-correlation value and the L-correlation value and expand them in the direction of positive values. <P>COPYRIGHT: (C)2010,JPO&INPIT |
申请公布号 |
JP2010060436(A) |
申请公布日期 |
2010.03.18 |
申请号 |
JP20080226555 |
申请日期 |
2008.09.04 |
申请人 |
FURUNO ELECTRIC CO LTD |
发明人 |
YAMADA KATSUO;MATSUMOTO MASATOSHI |
分类号 |
G01S19/30;H04B1/707;H04B1/7075;H04B1/7085 |
主分类号 |
G01S19/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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