Receiving device and correlation integrating method

摘要

In a baseband processing circuit unit, a sample memory stores a received data sequence obtained by sampling a signal received by an RF receiving circuit unit at a given sampling time interval. A data sequence estimating unit estimates an estimated data sequence, which is obtained when the received signal is sampled at a sampling time shifted by a given shift time from the sampling time of the received data sequence, on the basis of the received data sequence stored in the sample memory. A correlation operation unit performs a correlation operation on the estimated data sequence estimated by the data sequence estimating unit 22 and a replica code. An integration unit integrates the correlation operation result from the correlation operation unit at a given integration time interval.

主权项

1. A receiving device comprising:
a receiving circuit that receives a satellite signal from a positioning satellite; a storage circuit that stores a received data sequence obtained by sampling the signal received by the receiving circuit at a given sampling time interval, the sampling time interval being an amount of time between each successive sample; an estimation circuit that estimates an estimated data sequence, which is obtained when the received signal is sampled at a sampling time shifted by a given shift time from the sampling time of the received data sequence, based on the received data sequence, wherein the shift time is less than the sampling time interval; a correlation operation circuit that performs a correlation operation on the estimated data sequence and a replica code; and an integration circuit that integrates the correlation operation result in the correlation operation circuit at a given integration time interval.