Patent ID: 9128178
Filing Date: 2015-09-08
Classification: G01S,G06F

Abstract:
1. A position calculation method comprising: receiving a first satellite signal from a first positioning satellite and a second satellite signal from a second positioning satellite; configuring a first reception channel to execute a first mode of correlation corresponding to an outdoor mode, the first mode being a mode that obtains a first correlation result corresponding to a first measurement time by averaging a plurality of correlation values between a code replica and the received first satellite signal sampled at prescribed sampling intervals during a first period, the first measurement time being an intermediate time between a start time and an end time of the first period; configuring a second reception channel to execute a second mode of correlation corresponding to an indoor mode, the second mode being a mode that obtains a second correlation result corresponding to a second measurement time by integrating a plurality of correlation values between the code replica and the received second satellite signal sampled at the prescribed sampling intervals during a second period, the second measurement time being a prescribed integration reference time in the second period; executing the first mode and the second mode in parallel while the first period and the second period overlap each other such that the first measurement time coincides with the second measurement time; and obtaining a positioning result that has a fix time which coincides with both the first measurement time and the second measurement time by performing a position calculation using the first correlation result and the second correlation result.