公开(公告)号：EP1387498A1

公开(公告)日：2004-02-04

申请号：EP02255421.6

申请日：2002-08-02

Applicant: STMicroelectronics, Ltd. ,  STMicroelectronics S.r.l.

Inventor： Mattos Esq., Philip ,  Losi esq., Marco

IPC: H04B1/707 ,  G01S5/14

CPC classification number: G01S19/37 ,  G01S19/24 ,  G01S19/29 ,  G01S19/30 ,  H04B1/708 ,  H04B1/709 ,  H04B2201/70715

Abstract: A semiconductor integrated circuit for processing a plurality of received broadcast signals, such as GPS signals, is operable in two modes; acquisition and tracking. In an acquisition mode, a memory arrangement comprising two circulating shift registers circulates samples of a received signal for correlation with a locally generated version of a GPS code. In a tracking mode, the sampled signal is provided direct to the correlators. The same correlators are thereby used to increase acquisition speed.

Abstract translation: 用于处理诸如GPS信号的多个接收的广播信号的半导体集成电路可在两种模式中操作; 采集和跟踪。 在采集模式中，包括两个循环移位寄存器的存储装置循环接收信号的采样，以便与本地生成的GPS码的版本相关。 在跟踪模式中，采样信号被直接提供给相关器。 因此，使用相同的相关器来提高采集速度。