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been removed by the off-line tool decimation process; when this is the case, the application must look for the feature in the finer LOD file of the target dataset.
5.7.1.6.3 Junction Identifier SJID, EJID, and JID Range
Requirement 119
http:www.opengis.netspeccdb1.0coretopo-jid-range This version of the standard imposes that SJID, EJID and JID SHALL have unique values
for all network datasets within the same geocell.
With a 64-bit range, it is practically impossible to run out of ID numbers. In the process of creating the unique identifier, special care must be taken by the off line tool in order to avoid
duplicating the identifier at the geocell boundary for the clipping points when the modified or added features overlap two or more geocells.
Table 3-27, CDB LOD versus Feature Density, specifies the maximum number of elements in a tile for vector datasets. This maximum number is not affected by the number of added clipping
point in a lineal feature. Although, this appears to lead to an unbounded number of points in a file, it is clamped to the geocell size. In practice, for a relative constant density, the number of
clipping points diminishes as the LOD number increases.
5.7.1.7 Handling of Light Points
All of the information that is needed to instantiate the light point features is organized in accordance to the CDB terrain tile structure. Each instance of a light point feature refers to a
light type defined by the CDB Standard via its shape attribution LTYP. As a result, the entire definition of the light i.e., its location, orientation and attributions is self-contained within the
vector data files.
The CDB standard defines a collection of CDB Light Types that includes airportrunway lighting systems, cultural lights, aircraft refueling systems, etc. The light types currently supported by
the CDB standard are listed in Annex J of this standard; they are also listed in Lights.xml as specified in Section 2.3, Light Naming. While the CDB standard provides a rigorous definition
for each type of light, its representation is entirely determined by the fidelity and the capabilities of client-devices.
5.7.1.8 Allocation of CDB Attributes To Vector Datasets
The CDB standard limits the applicability of each of the CDB attributes to certain vector datasets. This approach helps to reduce the number of columns hence to reduce the size of the
dBase instance and class-level attribution files.
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The allocation of CDB attributes to each of the Vector datasets is prescribed by Table 5-27 below.
Table 5-27:
Allocation of
CDB Attributes
to Vector
Dataset
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AHG T
AO 1
AP ID
BBH BBL
BBW B
O TY
BS R
CE AI
CM IX
CNAM DAM
A DE
P DI
R DM
L DM
R DM
S DM
T EJ
ID FA
C C
FS C
GA ID
GE A
I HG
T JI
D LA
C C
LE N
L LN
A M
LO TY
LP H
LP N
LT N
LT Y
P M
LO D
MMD C
MO D
L MO
D T
NCS 1
NCS 2
NDS C
PO PD
PO PT
R TA
I RW
ID S
C A
Lx S
C A
Ly S
C A
Lz SJ
ID SR
D SSC
SSR TX
ID
Feature Instance-level P P P P P P P P P P Y P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P
Feature Class-level Y
Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y Y Y
Y Y
Y Y Y Y Y Y Y
Y Y Y Y Feature Extended-level
Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y
GSFeature Dataset Man Made Point
O R O O O O D O M M O O
M M O O D O
D O
M O O O O R R O
Man Made Lineal O
O O M M O O R
M M O O R O
M M O
O Man Made Areal
O O
O M M O O R R
M M O O R O
M M O
O O
Natural Point O R O O O O
D O M M O O M M
O D O
D O
M O O O
Natural Lineal O
O O M M O O R
M M O R
O M
M Natural Areal
O O
O M M O O R
M M O R
O M
M R
Tree Point O R O O O O
D O M M O O M M
O D O
D O
M O O O
Airport Light Point O R R
O M M O M M R O O
O O
M O M R
R Airport Lineal
O R
O M M O O R M M O O R
O M
M O O
Airport Areal O
R O M M O O
R R M M O O R
O M
M O O
O Environmental Light Point
O R O O M M O
M M O O O O
O M O
M O O
GTFeature Dataset Man Made Point
O R O O O O D O M M O O
M M O O D O
D O
M O O O O R R O
Man Made Lineal O
O O M M O O R
M M O O R O
M M O
O Man Made Areal
O O
O M M O O R R
M M O O R O
M M O
O O
Tree Point O R O O O O
D O M M O O M M
O D O
D O
M O O O
Tree Lineal O
O O M M O O R
M M O R
O M
M Tree Areal
O O
O M M O O R
M M O R
O M
M R
Moving Model Location O M O O O O
M O M M O O O O M
O M
M O O
GeoPolitical Dataset Location Point
O O
O O O R M O
M M O O O
O O O O M O
O Location Lineal
O O
O R M O M M O O
O O O
O M O
O Location Areal
O O
O R M O O R R R
M M O O O
O O O
O O M O R
O Boundary Point
O O
O O O R M O M M O O
O O
O O O M O
O Boundary Lineal
O O
O R M O M M O O
O O
O O
M O O
Boundary Areal O
O O R M O
O R R R M M O O
O O
O O
O O M O R
O Constraint Point
O O
M M O
O O
O M
Constraint Lineal O
O M M
O O O O
O M
Constraint Areal O
O M M
O O
O O
M M Mandatory
R Recommended D Deprecated Attribution Schema
P Preferred Attribution Schema Not permitted
O Optional D Dependent on other attribute
Y Allow ed Attribution Schema Not used
AHG T
AO 1
AP ID
BBH BBL
BBW B
O TY
BS R
CE AI
CM IX
CNAM DAM
A DE
P DI
R DM
L DM
R DM
S DM
T EJ
ID FA
C C
FS C
GA ID
GE A
I HG
T JI
D LA
C C
LE N
L LN
A M
LO TY
LP H
LP N
LT N
LT Y
P M
LO D
MMD C
MO D
L MO
D T
NCS 1
NCS 2
NDS C
PO PD
PO PT
R TA
I RW
ID S
C A
Lx S
C A
Ly S
C A
Lz SJ
ID SR
D SSC
SSR TX
ID TR
F
Feature Instance-level P P P P P P P P P P Y P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P
Feature Class-level Y
Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y Y Y
Y Y
Y Y Y Y Y Y Y
Y Y Y Y Y Feature Extended-level
Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Y Y Y Y Y Y Y Y Y Y
RoadNetwork Dataset RoadNetwork Lineal
O R
O M M O O R M M M R O R
M O R
D O D
M R
O O O M R
R R RoadNetwork Lineal Figure Pt
O R R
O O O D O M M O O
M M R O D M O
D O D
M R
O O O R
R AirportNetwork Lineal
O R
O M M O O R M M M R O
R M O
R D
O D M R O O O M
R R R
AirportNetwork Areal O
R O M M O O
M M M R O O
O D M R O O O M
R R
RoadAirport Tile Connection O
M O
M M
R RoadAirport Dataset Connection
O M
O M
M M M R
RailRoadNetwork Dataset RailRoadNetwork Lineal
O R
O M M O O R M M M
R O R
M O R
D O D
M R
O O O M R
R R
RailRoadNetwork Lineal Figure Pt O R
R O O O
D O M M O O M M
R O D M
O D
O D M
R O O O
R R
RailRoad Tile Connection O
M O
M M
RailRoad Dataset Connection O
M O
M M M M
PowerLineNetwork Dataset PowerLineNetwork Lineal
O R
O M M O O R M M M
R O R
M O R
D O D
M R
O O O M R
R R PowerLineNetwork Lineal Figure Pt
O R R
O O O D O M M O O
M M R
O D M O
D O D
M R
O O O R
R PowerLine Tile Connection
O M
O M
M PowerLine Dataset Connection
O M
O M
M M M
HydrographyNetwork Dataset HydrographyNetwork Lineal
O R
O M M O O R M M M
R O
R M O
R D
O D M
R O O O M
R R
R HydrographyNetwork Areal
O R
O M M O O M M M
R O
O O D
M R
O O O M R
R HydrographyNetwork Lineal Figure Pt O R
R O O O
D O M M O O M M
R O D M
O D
O D M
R O O O
R R
HydrographyNetwork Areal Figure Pt O R
R O O O
D O M M O O M M
R O D M
O D
O D M
R O O O
R R
Hydrography Tile Connection O
M O
M M
Hydrography Dataset Connection O
M O
M M M M
M Mandatory R Recommended
D Deprecated Attribution Schema P Preferred Attribution Schema
Not permitted O Optional
D Dependent on other attribute Y Allow ed Attribution Schema
Not used
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5.7.2 Tiled Navigation Dataset
As described in section 5.2, the global navigation dataset is complemented by a tiled-based dataset of basic navigation information that refers to the corresponding geocell. Those are found
in the \401_Navigation dataset which is subdivided into several components as listed in the next table.
Table 5-28: Tiled Navigation Dataset CS1
CS2 File Extension
Component Name
Component Description
Dataset 401, Navigation 001-046
001 Dependent on
format or encoding
Tiled Navigation
Dataset Contains the basic Navigation records
Refer to Table below, List of Navigation Components, for a complete description of the possible values of CS1.
List of Navigation Components Component Name
CS1 Vector Type
Component Description
Airport 1
Point Area or land that is used or intended for
use for the landing and take-off of aircraft.
AirRefueling 2
Point A specifically designated airspace
where air-to-air refueling operations are normally conducted.
AirRefuelingControl 3
Point Information regarding the Air Traffic
Control Center that controls the airspace within which the refueling track or
anchor is located.
AirRefuelingFootnote 4
Point Supplemental notes defining an Air
Refueling component AirRefuelingPoint
5 Point
Single Point from an Air Refueling structure
AirRefuelingSegment 6
LineString Segment from an Air Refueling
structure AirspaceBoundary
7 Point
Designated airspace within which some or all aircraft may be subject to air
traffic control. AirwayRestriction
8 Point
Altitude and time restrictions for airways, airway segments, or sequences
of airway segments Approach
9 LineString
Preplanned instrument flight rule IFR for air traffic control approach
procedures. ArrestingGear
10 Point
Safety device consisting of engaging or catching devices, and energy absorption
devices for the purpose of arresting both
