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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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151 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
7.82 Data Element: DE_Longitude
Use: The geographic longitude of a node, expressed in 1/8th integer microdegrees, as a 32 bit value and
with reference to the horizontal datum specified by horizontalDatum.
ASN.1 Representation:
Longitude ::= INTEGER (-1440000000..1440000000)
-- in LSB = 1/8 micro degree
-- Providing a range of plus-minus 180 degrees
XML Representation:
<xs:simpleType name="Longitude" >
<xs:annotation>
<xs:documentation>
in LSB = 1/8 micro degree
Providing a range of plus-minus 180 degrees
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:int">
<xs:minInclusive value="-1440000000"/>
<xs:maxInclusive value="1440000000"/>
</xs:restriction>
</xs:simpleType>
Used By: This entry is directly used by the following 7 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
<XML>, and
DF
<XML>, and
DF
<XML>, and
MSG
In addition, this item may be used by data structures in other ITS standards.
7.83 Data Element: DE_MAYDAY_Location_quality_code
Use: A value representing the "goodness" of the position estimate (accuracy). The element is used to
convey the relative quality of a GPS generated location. This quality value is enumerated as shown, as
follows below.
ASN.1 Representation:
Location-quality ::= ENUMERATED {
loc-qual-bt1m (0), -- quality better than 1 meter
loc-qual-bt5m (1), -- quality better than 5 meters
loc-qual-bt12m (2), -- quality better than 12.5 meters
loc-qual-bt50m (3), -- quality better than 50 meters
loc-qual-bt125m (4), -- quality better than 125 meters
loc-qual-bt500m (5), -- quality better than 500 meters
loc-qual-bt1250m (6), -- quality better than 1250 meters
loc-qual-unknown (7) -- quality value unknown
} -- 3 bits, appends with loc-tech to make one octet (0..7)
XML Representation:
<xs:annotation>
<xs:appinfo>
loc qual bt1m (0) -- quality better than 1 meter