System for checking the plausibility of satellite signals from global navigation systems

A system for receiving and processing satellite signals from satellites of global navigation systems, in particular for a vehicle, having a signal path includes a signal conditioning unit for conditioning received satellite signals, an analysis unit for analyzing the conditioned satellite signals, and a position determination unit for determining measured values utilizing the satellite signals provided by the analysis unit. The measured values include a position, a speed, and/or a satellite time. The system has two signal paths which are separate from one another and each process mutually independent satellite signals for a position.

METHOD AND APPARATUS FOR ASSESSING A POSITION OF A VEHICLE

A method and an apparatus for assessing a position of a vehicle are described herein. The disclosure proposes ascertaining a first absolute position utilizing a conventional GNSS receiver. This is to be compared with a second absolute position, which is ascertained in a secure safety unit or a secure ASIL-compatible chip, and is therefore always plausible. 1. A method for assessing a position of a vehicle by an apparatus comprising an antenna for receiving satellite navigation data of a global satellite navigation system (GNSS) , at least one processing unit for processing the satellite navigation data received , and a safety unit for the secure processing of data , comprising:transmitting a first absolute position, ascertained by a first processing unit, to the safety unit;receiving satellite navigation data at the safety unit;ascertaining a second absolute position on the basis of the satellite navigation data utilizing the safety unit;comparing the first absolute position with the second absolute position utilizing the safety unit, andassessing the first absolute position in dependence on the deviation from the second absolute position or vice versa with the safety unit.2. The method as set forth in claim 1 , wherein at least the part of the safety unit that ascertains the second absolute position is secure in terms of software and/or in terms of hardware.3. The method as set forth in claim 2 , wherein the safety unit is an independent microcontroller.4. The method as set forth in claim 3 , wherein the microcontroller meets the requirements of ASIL A claim 3 , B claim 3 , C claim 3 , or D in accordance with ISO 26262.5. The method as set forth in claim 1 , further comprising outputting a position exclusively utilizing the safety unit.6. The method as set forth in claim 1 , further comprising receiving sensor data at the safety unit from at least one inertial sensor for ascertaining the second absolute position.7. The method as set forth in claim 1 , wherein the ...

Method and apparatus for estimating a position of a vehicle, particularly according to an asil safety level

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Bewerten einer Position eines, insbesondere autonom geführten, Fahrzeugs mittels einer Vorrichtung zum Ermitteln einer Position eines Fahrzeugs. Erfindungsgemäß wird vorgeschlagen eine erste Absolutposition mittels eines herkömmlichen GNSS Empfängers zu ermitteln. Diese soll mit einer zweiten Absolutposition verglichen werden, die jedoch in einer abgesicherten Sicherheitseinheit oder einem abgesicherten ASIL fähigen Chip ermittelt wird und daher stets plausibel ist.

Verfahren und vorrichtung zum bewerten einer position eines fahrzeugs, insbesondere nach einer asil sicherheitsstufe