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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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134 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<xs:enumeration value="unMonitored"/>
<xs:enumeration value="aFixedBaseStation"/>
<xs:enumeration value="aMovingBaseStation"/>
<xs:enumeration value="aPDOPofUnder5"/>
<xs:enumeration value="inViewOfUnder5"/>
<xs:enumeration value="localCorrectionsPresent"/>
<xs:enumeration value="networkCorrectionsPresent"/>
</xs:restriction>
</xs:simpleType >
</xs:union>
</xs:simpleType>
<xs:simpleType name="GPSstatus">
<xs:list itemType="GPSstatus-item"/>
</xs:simpleType>
Used By: This entry is directly used by the following 2 other data structures in this standard (record type,
descriptive name, ASN.1, and XML name (if present) of each):
DF
DF
In addition, this item may be used by data structures in other ITS standards.
Remarks: A GPS set with unknown health and not tracking or corrections would be represented by all
zeros.
7.57 Data Element: DE_HeadingConfidence
Use: This DE is used to provide to listeners the confidence interval of the 95% confidence level for the
currently reported value of DE_Heading, taking into account the current calibration and precision of the
sensor(s) used to measure and/or calculate the value. This data element is only to provide the listener with
information on the limitations of the sensing system; not to support any type of automatic error correction
or to imply a guaranteed maximum error. This data element should not be used for fault detection or
diagnosis, but if a vehicle is able to detect a fault, the confidence interval should be increased accordingly.
The frame of references and axis of rotation used shall be accordance with that defined in SAE J670, Issued
1976-07 and its successors. Note the definitions provided in Figure 1 (Tire Axis System) and Figure 2
(Directional Control Axis Systems).
ASN.1 Representation:
HeadingConfidence ::= ENUMERATED {
notEquipped (0), -- B'000 Not Equipped
prec45deg (1), -- B'001 45 degrees
prec10deg (2), -- B'010 10 degrees
prec05deg (3), -- B'011 5 degrees
prec01deg (4), -- B'100 1 degrees
prec0-1deg (5), -- B'101 0.1 degrees
prec0-05deg (6), -- B'110 0.05 degrees
prec0-01deg (7) -- B'111 0.01 degrees
}
-- Encoded as a 3 bit value
XML Representation:
<xs:simpleType name="HeadingConfidence" >
<xs:annotation>
<xs:appinfo>
notEquipped (0) -- B'000 Not Equipped
prec45deg (1) -- B'001 45 degrees
prec10deg (2) -- B'010 10 degrees
prec05deg (3) -- B'011 5 degrees
prec01deg (4) -- B'100 1 degrees
prec0 1deg (5) -- B'101 0.1 degrees
prec0 05deg (6) -- B'110 0.05 degrees
prec0 01deg (7) -- B'111 0.01 degrees
</xs:appinfo>
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