Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
1.2.5 Provision of data 
• Result information from 1.2.4 
• Representation of the selected measured value for 
the navigator 
• Display if measured values inconsistent 
• Provision of meas. values for further processing 
1.3 Determine longit. 
speed over ground 
1.3.1 Provide data and 
criteria 
• See Table 4 
• Different SOGX 
1.3.2 Compare data and 
criteria 
• Result information from 1.3.1 
• Accuracy of all input variables 
• Plausibility criteria 
• Statement concerning the consistency and plausi 
bility of the measured values 
1.3.3 Assess result of 
comparison 
• Result information from 1.3.2 
• Consistency criteria 
• Is a measured value usable? 
1.3.4 Selection of data to 
be provided 
• Result information from 1.3.1 
• Result information from 1.3.3 
. SOGX 
1.3.5 Provision of data 
• Result information from 1.3.4 
• Representation of the selected measured value for 
the navigator 
• Display if measured values Inconsistent 
• Provision of measured values for further processing 
1.4 Determine transv. 
speed over ground 
1.4.1 Provide data and 
criteria 
• See Table 4 
• Different SOGY* 
1.4.2 Compare data and 
criteria 
• Result information from 1.4.1 
• Accuracy of all input variables 
• Plausibility criteria 
• Statement concerning the consistency and plausi 
bility of the measured values 
1.4.3 Assess result of 
comparison 
• Result information from 1.4.2 
• Consistency criteria 
• Is a measured value usable? 
1.4.4 Selection of data to 
be provided 
• Result information from 1.4.1 
• Result Information from 1.4.3 
• SOGY x 
1.4.5 Provision of data 
• Result information from 1.4.4 
• Representation of the selected measured value for 
the navigator 
• Display if measured values inconsistent 
• Provision of measured values for further processing 
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