Method for estimating the delay of a GPS measurement in a moving vehicle compared to at least one recorded vehicle dynamics parameter.

By using vehicle dynamics parameter transitions as reference points and calculating cross-correlation, the GPS measurement delay is accurately estimated, correcting vehicle dynamics parameters and compensating for processing delays in GPS-based methods.

DE102012104380B4Active Publication Date: 2026-06-03CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH
Filing Date
2012-05-22
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing GPS-based vehicle dynamics estimation methods face delays of several hundred milliseconds due to the processing of satellite signals, which are not synchronized with the vehicle's dynamic changes, leading to inaccuracies in vehicle dynamics parameter calculations.

Method used

Identify specific operating situations where vehicle dynamics parameters transition from below to above a threshold, using these transitions as reference points to compare with GPS measurements, calculating cross-correlation to estimate the delay.

Benefits of technology

Provides a simple and accurate method to estimate GPS measurement delay, allowing correction of vehicle dynamics parameters and compensating for long-term offset errors, particularly during normal driving conditions.

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Abstract

Method for estimating a delay of a GPS measurement in a moving vehicle compared to at least one recorded vehicle dynamics parameter, characterized in that a) the first vehicle dynamics parameter or a parameter derived therefrom is compared with a first threshold, b) if the first vehicle dynamics parameter or parameter derived therefrom has remained below the first threshold for a first predetermined period of time, but subsequently exceeds the first threshold for a predetermined second period of time, c) a reference time is determined and at least from this reference time the first vehicle dynamics parameter or a parameter derived therefrom is compared with a reference parameter derived from the GPS measurement and the delay of the GPS measurement is estimated from this.
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