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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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71 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
6.30 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 used directly by one other data structure in this standard, a DF called
DF_VehicleStatus <ASN> <XML>. In addition, this item may be used by data structures in other ITS
standards.
6.31 Data Frame: DF_Position3D
Use: A collection of the two 4 byte lat-long information elements and the one 2 byte elevation used to
build a complete 3D position set in 10 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" />
</xs:sequence>
</xs:complexType>
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
<XML>, and
DF
<XML>, and
DF
<XML>, and
DF
In addition, this item may be used by data structures in other ITS standards.
Remarks: Note that this data frame is also used in defining a data blob.