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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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39 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
DF
DF
DF
MSG
In addition, this item may be used by data structures in other ITS standards.
Remarks: In edition one of the standard the first 2 bytes were a DSecond followed by DFulTime in 6 bytes. This
produced a complete time value in 8 bytes. In this edition, these have been re-ordered into a single value, that of
DDateTime. This changes the ordering (but not the size) encoded over the wire, and the ordering and the tags
when expressed in XML.
6.13 Data Frame: DF_Position2D
Use: A collection of the two 4 byte lat-long information elements used to build a complete 2D position set. No
elevation data is sent in this 8 bytes data frame.
ASN.1 Representation:
Position2D ::= SEQUENCE {
lat Latitude, -- in 1/8th micro degrees
long Longitude -- in 1/8th micro degrees
}
XML Representation:
<xs:complexType name="Position2D" >
<xs:sequence>
<xs:element name="lat" type="Latitude" />
<!-- in 1/8th micro degrees -->
<xs:element name="long" type="Longitude" />
<!-- in 1/8th micro degrees -->
</xs:sequence>
</xs:complexType>
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.
6.14 Data Frame: DF_Position3D
Use: A collection of the two 4 byte lat-long information elements and the one 3 byte elevation used to build a
complete 3D position set in 11 bytes.
ASN.1 Representation:
Position3D ::= SEQUENCE {
lat Latitude, -- in 1/8th micro degrees
long Longitude, -- in 1/8th micro degrees
elevation Elevation
}
XML Representation:
<xs:complexType name="Position3D" >
<xs:sequence>
<xs:element name="lat" type="Latitude" />
<!-- in 1/8th micro degrees -->
<xs:element name="long" type="Longitude" />
<!-- in 1/8th micro degrees -->
<xs:element name="elevation" type="Elevation" />