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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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44 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
-- as a relative measure of merit
-- from [SAE-J2313::Location-tech]
-- from [SAE-J2313::Location-quality]
-- above two items form one 8 bit field
}
-- this element fits in exactly 15 bytes
XML Representation:
<xs:complexType name="SpaceVector" >
<xs:annotation>
<xs:documentation>
this element fits in exactly 15 bytes
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="lat" type="Latitude" />
<!-- a 4 byte value -->
<xs:element name="long" type="Longitude" />
<!-- a 4 byte value -->
<xs:element name="heading" type="Heading" />
<!-- a 1 byte value from geoids north -->
<xs:element name="speed" type="Speed" />
<!-- a 2 byte field in units
of 0.01 meters per second -->
<xs:element name="vertical" type="Elevation" />
<!-- 2 byte field -->
<!-- how the position was obtained, acts
as a relative measure of merit
from [SAE-J2313::Location-tech] -->
<!-- estimate of accuracy for this location
from [SAE-J2313::Location-quality]
above two items form one 8 bit field -->
</xs:sequence>
</xs:complexType>
Used By: This entry is used directly by one other data structure in this standard, a MSG called
MSG_RoadSideAlert <ASN> <XML>. In addition, this item may be used by data structures in other
ITS standards.
Remarks: The definitions for Lat-Long etc. follow those defined and found elsewhere in the SAE J2735
work on DSRC message sets, which in turn are derived from the normal LRMS definitions.
6.2 Data Element: DF_AccelerationSet4Way (Revise Byte Counts
Use: A set of acceleration values in 3 orthogonal directions of the vehicle and with yaw rotation rate.
Expressed as an octet set
ASN.1 Representation:
AccelerationSet4Way ::= OCTET STRING (SIZE(4))
-- composed of the following:
-- SEQUENCE {
-- long Acceleration, -x- Along the Vehicle Longitudinal axis
-- lat Acceleration, -x- Along the Vehicle Lateral axis
-- vert VerticalAcceleration, -x- Along the Vehicle Vertical axis
-- yaw YawRate
-- }
XML Representation:
<xs:complexType name="AccelerationSet4Way" >
<xs:simpleContent>
<xs:annotation>
<xs:documentation>
composed of the following:
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