公开(公告)号：US20230099213A1

公开(公告)日：2023-03-30

申请号：US17953869

申请日：2022-09-27

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Domenico DI GRAZIA ,  Fabio PISONI

IPC: G01S19/21

Abstract: A satellite tracking channel has a frequency loop tracking a carrier frequency of a satellite signal. A first indication of a spoofed signals is generated based on a determined satellite signal noise floor value associated with the satellite tracking channel and a tracking channel signal noise threshold associated with the satellite tracking channel. A second indication of a spoofed signal is generated based on a determining satellite tracking phase noise associated with the satellite tracking channel and a tracking channel phase noise threshold associated with the satellite tracking channel. Reception of a spoofed signal on the satellite tracking channel is detected based on the generated first indication of a spoofed signal and the generated second indication of the spoofed signal.

公开(公告)号：US20180329069A1

公开(公告)日：2018-11-15

申请号：US15980221

申请日：2018-05-15

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico DIGRAZIA ,  Fabio PISONI

IPC: G01S19/23 ,  G01S19/29

CPC classification number: G01S19/23 ,  G01S19/235 ,  G01S19/29

Abstract: A Global Navigation Satellite System (GNSS) receiver includes a Temperature Compensated Crystal Oscillator (TCCO) circuit. A micro jump of the TCCO circuit is detected by monitoring wide band phase values and carrier to noise ratio estimate values for each tracking channel of the tracking modules for the GNSS receiver. In response to a detected micro-jump, a frequency correction is calculated and applied to numerically controlled oscillators of phase/frequency lock loop circuits within tracking modules.