Gnss/ins-Navigationssicherung mit Atomuhr in Chipgrösse

Details

Veröffentlichungs-Nr.

EP4624998

Aktenzeichen

EP25150936

Anmeldetag

9. Januar 2025

Veröffentlichung

29. Oktober 2025

Rechtsraum

EP

IPC

G01S19/14G01S19/21

Abstract

In one example, a method includes receiving, from a CSAC, an indication of a difference between a phase of a GNSS 1PPS signal output by a GNSS receiver and a phase of a CSAC 1PPS signal. The method includes determining, with a Kalman filter, a phase error estimate and a frequency error estimate for the CSAC based on the difference between the phase of a GNSS 1PPS signal output by the GNSS receiver and the phase of the CSAC 1PPS signal. The method includes disciplining, with the Kalman filter, the CSAC using coarse synchronization commands and fine steer commands, wherein the coarse synchronization commands and the fine steer commands are based on the phase error estimate and the frequency error estimate for the CSAC. The method includes detecting GNSS spoofing based on the difference between the phase of the GNSS 1PPS signal and the phase of the CSAC 1PPS signal.

Anmelder

Firma

Honeywell International Inc.

Land

🇺🇸 USA

Fachgebiete