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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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135 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<xs:documentation>
Encoded as a 3 bit value
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:unsignedInt">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="7"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="notEquipped"/>
<xs:enumeration value="prec45deg"/>
<xs:enumeration value="prec10deg"/>
<xs:enumeration value="prec05deg"/>
<xs:enumeration value="prec01deg"/>
<xs:enumeration value="prec0 1deg"/>
<xs:enumeration value="prec0 05deg"/>
<xs:enumeration value="prec0 01deg"/>
</xs:restriction>
</xs:simpleType >
</xs:union>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a DF called
DF_SpeedandHeadingConfidence <ASN> <XML>. In addition, this item may be used by data
structures in other ITS standards.
7.58 Data Element: DE_Heading
Use: The current heading of the vehicle, expressed in unsigned units of 0.010986434 degrees from North
(such that 32757 such degrees represent 359.8815 degrees). North shall be defined as the axis defined by
the WSG-84 coordinate system and its reference ellipsoid. Headings "to the east" are defined as the
positive direction. A 2 byte value.
ASN.1 Representation:
Heading ::= INTEGER (0..32757) -- LSB of 0.010986434 degrees
XML Representation:
<xs:annotation>
<xs:documentation>
LSB of 0.010986434 degrees
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:unsignedShort">
<xs:maxInclusive value="32757"/>
</xs:restriction>
</xs:simpleType>
Used By: This entry is directly used by the following 4 other data structures in this standard (record type,
descriptive name, ASN.1, and XML name (if present) of each):
DF
DF
DF
MSG
In addition, this item may be used by data structures in other ITS standards.
Remarks: Note that a one byte heading data elements are found in other parts of ITS.
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