AFI Region AIXM e-AIP Implementation Workshop Dakar ... · AFI Region AIXM e-AIP Implementation...
Transcript of AFI Region AIXM e-AIP Implementation Workshop Dakar ... · AFI Region AIXM e-AIP Implementation...
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AIXM 5.1 Temporality Concept
AFI Region AIXM e-AIP Implementation WorkshopDakar, Senegal, 3-5 October 2016
Razvan GULEACEUROCONTROL
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Temporality Model
§ Definition§ A model that incorporates the concept of time at feature level!
§ Key assertions§ All features are temporal with start of life and end of life
§ Example: a new air traffic control sector§ All features can change over time
§ Example: a VOR changes frequency§ Additional issue – feature properties can have different values
according to a repetitive schedule§ AIXM Temporality Model
§ Relates feature properties to the time extent in which they are valid§ Provides various means to describe the time extent
AIXM 5.1 Temporality Concept
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Features have time varying properties
Time
P1
FeatureProperties
value 1 value 2 value 3 value 4
P2 value a value b
P3 value x
P4 value z
P5 value $ value #
AIXM 5.1 Temporality Concept
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The basic Time Slice model
Time
P1
FeatureProperties
value 1 value 2 value 3 value 4
P2 value a value b
P3 value x
P4 value z
P5 value $ value #
AIXM 5.1 Temporality Concept
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The basic Time Slice model
P1
FeatureProperties
P2
P3
P4
P5
TimeSlices: TS 1 TS 2 TS 3 TS 4 TS 5 TS 6 TS 7 TS 8
states
AIXM 5.1 Temporality Concept
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PERMDELTA TimeSlices
P1
FeatureProperties
P2
P3
P4
P5
TimeSlices: TS 1 TS 2 TS 3 TS 4 TS 5 TS 6 TS 7 TS 8
PERMDELTA 1(start of life) PERMDELTA 2 PERMDELTA 3
PERMDELTA 4PERMDELTA 5 PERMDELTA 6
PERMDELTA 7PERMDELTA 8
PERMDELTA 9(end of life)
AIXM 5.1 Temporality Concept
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P1
FeatureProperties
P2
P3
P4
P5
TimeSlices: TS 1 TS 2 TS 3 TS 4 TS 5 TS 6 TS 7 TS 8
temporaryvalue w
TS "temp”
event
Temporary events (digital NOTAM)
AIXM 5.1 Temporality Concept
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Current status of a feature
P1
FeatureProperties
P2
P3
P4
P5
TimeSlices: TS 1 TS 2 TS 3 TS 4 TS 5 TS 6 TS 7 TS 8
temporaryvalue w
SNAPSHOT
AIXM 5.1 Temporality Concept
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AIXM Temporality document
See www.aixm.aeroAIXM 5.1 Temporality Concept
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Example – abstract
Start of life
AIXM 5.1 Temporality Concept
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Example - abstract
Attention:“DELTA” for complex properties (objects) – see section 3.4 “DELTA” for multi-occurring properties – see section 3.5
Permanent Changes
TimeSlice - validTime = timeInstant… - interpretation = PERMDELTA - sequenceNumber = 2 - property 3 (new value) - property 5 (new value)
TimeSlice - validTime = timeInterval with
undetermined end … - interpretation = BASELINE - sequenceNumber = 2 - featureLifetime/beginPosition =
timeInstant… - property 1 - property 2 - property 3 (new value) - property 4 - property 5 (new value)
AIXM 5.1 Temporality Concept
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Example - abstract
Temporary change (NOTAM)
AIXM 5.1 Temporality Concept
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Example - abstractEnd of life
AIXM 5.1 Temporality Concept
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AML Navaid undergoes an upgrade that changes its frequency from 112.0 MHz to 113.2 MHz…
VOR navaid: id = AMLStatus = Operational, Freq = 112.0 MHz
VOR navaid: id = AMLStatus = Operational, Freq = 113.2 MHz
NOTAMStatus = Offline
for upgradesNOTAM
Status = on test,do not use
Snapshot 1
Frequency upgrade coordinated to be effective next cycle
TempDelta 1TempDelta 2
Permanent Delta 2
Freq = 113.2 MHz
Baseline 1Baseline 2
Permanent Delta 1
Snapshot 2 Snapshot 3 Snapshot 4
An Example: Navaid frequency change
AIXM 5.1 Temporality Concept
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Temporality applied to the abstract model
Current AIXM 5.1 UML does not include this.
Temporality is applied directly at XSD generation time.
AIXM 5.1 Temporality Concept
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Properties with schedule
TIME SLICE validity
AIXM 5.1 Temporality Concept
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Properties with schedule
AIXM 5.1 Temporality Concept
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Properties with schedule
AIXM 5.1 Temporality Concept
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Questions?