| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively suppress even the effect of a color noise, without sacrificing the limit performance of acquisition. SOLUTION: A PN code changeover correlation section 47" is provided with a PN-code correlation section 47 that obtains a correlation between a PN code, which is a spread code and a received signal without applying forming processing to the PN code and with a PN code amplitude suppressing correlation section 47', that obtains the correlation between the PN code subjected to forming processing and the received signal, and each of them is used through the selection by switches 47-1, 47-2. Parameters for the forming processing in the PN code amplitude suppressing correlation section 47' may be controlled also.</p> |
