Asterix category 065 - SDPS Service Status Reports
category: 065
edition: 1.5
date: 2020-06-18
Preamble
Surveillance data exchange.
Description of standard data items
I065/000 - Message Type
Definition: This Data Item allows for a more convenient handling of the messages at the receiver side by further defining the type of transaction.
Structure:
8 bits [
........]values:
1: SDPS Status
2: End of Batch
3: Service Status Report
- Notes:
-
- In application where transactions of various types are exchanged, the Message Type Data Item facilitates the proper message handling at the receiver side.
I065/010 - Data Source Identifier
Definition: Identification of the system sending the data.
Structure:
I065/010/SAC - System Area Code
- 8 bits [
........]- raw value
I065/010/SIC - System Identification Code
- 8 bits [
........]- raw value
- Note:
-
- The up-to-date list of SACs is published on the EUROCONTROL Web Site (http://www.eurocontrol.int/asterix).
I065/015 - Service Identification
Definition: Identification of the service provided to one or more users.
Structure:
- 8 bits [
........] - raw value
- Note:
-
- The service identification is allocated by the SDPS.
I065/020 - Batch Number
Definition: A number indicating the completion of a service for that batch of track data, from 0 to N-1, N being the number of batches used to make one complete processing cycle.
Structure:
- 8 bits [
........] - unsigned integer
I065/030 - Time of Message
Definition: Absolute time stamping of the message, in the form of elapsed time since last midnight, expressed as UTC.
Structure:
- 24 bits [
........................] - unsigned quantity
- unit: “s”
- LSB = 1/27 s ≈ 7.81e − 3 s
- Note:
-
- The time is reset to zero at every midnight.
I065/040 - SDPS Configuration and Status
Definition: Status of an SDPS.
Structure:
I065/040/NOGO
2 bits [
..]values:
0: Operational
1: Degraded
2: Not currently connected
3: UnknownI065/040/OVL
1 bit [
.]values:
0: Default
1: OverloadI065/040/TSV
1 bit [
.]values:
0: Default
1: Invalid Time SourceI065/040/PSS - Processing System Status
2 bits [
..]values:
0: Not applicable
1: SDPS-1 selected
2: SDPS-2 selected
3: SDPS-3 selectedI065/040/STTN - Track Re-numbering Indication
1 bit [
.]raw value
- remark
The STTN bit indicates when track numbering has been restarted. The STTN bit is a toggle bit that changes its value whenever the SDPS system starts re-numbering its tracks. Re-numbering of the track takes place either after SDPS start-up (cold or hot start-up) or when a configuration set has been changed (please note that the latter case is ARTAS specific behaviour and may be different in another SDPS).
I065/040/(spare)
- 1 bit [
.]
I065/050 - Service Status Report
Definition: Report sent by the SDPS related to a service
Structure:
8 bits [
........]values:
1: Service degradation
2: Service degradation ended
3: Main radar out of service
4: Service interrupted by the operator
5: Service interrupted due to contingency
6: Ready for service restart after contingency
7: Service ended by the operator
8: Failure of user main radar
9: Service restarted by the operator
10: Main radar becoming operational
11: Main radar becoming degraded
12: Service continuity interrupted due to disconnection with adjacent unit
13: Service continuity restarted
14: Service synchronised on backup radar
15: Service synchronised on main radar
16: Main and backup radar, if any, failed
I065/RE - Reserved Expansion Field
Definition: Expansion
Structure:
Explicit item (RE)
I065/SP - Special Purpose Field
Definition: Special Purpose Field
Structure:
Explicit item (SP)
User Application Profile for Category 065
I065/010- Data Source Identifier
I065/000- Message Type
I065/015- Service Identification
I065/030- Time of Message
I065/020- Batch Number
I065/040- SDPS Configuration and Status
I065/050- Service Status Report
(FX)- Field extension indicator(spare)
(spare)
(spare)
(spare)
(spare)
I065/RE- Reserved Expansion Field
I065/SP- Special Purpose Field
(FX)- Field extension indicator