Asterix category 063 - Sensor Status Reports

category: 063

edition: 1.6

date: 2020-08-04

Preamble

Surveillance data exchange.

Description of standard data items

I063/010 - Data Source Identifier

Definition: Identification of the radar station from which the data are received.

Structure:

I063/010/SAC - System Area Code

8 bits [........]

raw value

I063/010/SIC - System Identification Code

8 bits [........]

raw value

Note:: The defined SACs are on the EUROCONTROL ASTERIX website (www.eurocontrol.int/asterix)

I063/015 - Service Identification

Definition: Identification of the service provided to one or more users.

Structure:

8 bits [........]
raw value

The service identification is allocated by the SDPS

I063/030 - 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

The time of the day value is reset to zero at every midnight.

I063/050 - Sensor Identifier

Definition: Structure:

I063/050/SAC - System Area Code

8 bits [........]

raw value

I063/050/SIC - System Identification Code

8 bits [........]

raw value

The up-to-date list of SACs is published on the EUROCONTROL Web Site (http://www.eurocontrol.int/asterix).
If the SAC/SIC refers to an SDPS used as input, the respective sensor status information will be transmitted using the Reserved Expansion Field.

I063/060 - Sensor Configuration and Status

Definition: Configuration and status of the sensor

Structure:

Extended item.

I063/060/CON

2 bits [..]

values:

0: Operational
1: Degraded
2: Initialization
3: Not currently connected

I063/060/PSR

1 bit [.]

values:

0: PSR GO
1: PSR NOGO

I063/060/SSR

1 bit [.]

values:

0: SSR GO
1: SSR NOGO

I063/060/MDS

1 bit [.]

values:

0: MDS GO
1: MDS NOGO

I063/060/ADS

1 bit [.]

values:

0: ADS GO
1: ADS NOGO

I063/060/MLT

1 bit [.]

values:

0: MLT GO
1: MLT NOGO

(FX)

extension bit

0: End of data item
1: Extension into next extent

I063/060/OPS - Operational Release Status of the System

1 bit [.]

values:

0: System is released for operational use
1: Operational use of System is inhibited

I063/060/ODP - Data Processor Overload Indicator

1 bit [.]

values:

0: Default, no overload
1: Overload in DP

I063/060/OXT - Transmission Subsystem Overload Status

1 bit [.]

values:

0: Default, no overload
1: Overload in transmission subsystem

I063/060/MSC - Monitoring System Connected Status

1 bit [.]

values:

0: Monitoring system connected
1: Monitoring system disconnected

I063/060/TSV - Time Source Validity

1 bit [.]

values:

0: Valid
1: Invalid

I063/060/NPW - No Plot Warning

1 bit [.]

values:

0: Default (no meaning)
1: No plots being received

I063/060/(spare)

1 bit [.]

(FX)

extension bit

0: End of data item
1: Extension into next extent

GO/NOGO information from PSR, SSR, Mode S, ADS and MLT is derived from monosensor categories and has a meaning only for operational sensors, whereas (CON) is derived by the SDPS.
The information (OPS), (ODP), (OXT), (MSC) and (TSV) are only related to CNS/ATM Ground Station and are derived from monosensor category (ASTERIX Cat 023).

I063/070 - Time Stamping Bias

Definition: Plot Time stamping bias, in two’s complement form

Structure:

16 bits [................]
signed quantity
unit: “ms”
LSB = 1 ms

I063/080 - SSR / Mode S Range Gain and Bias

Definition: SSR / Mode S Range Gain and Range Bias, in two’s complement form.

Structure:

I063/080/SRG - Mode S Range Gain

16 bits [................]

signed quantity

LSB = 1/100000 ≈ 1.00e − 5

I063/080/SRB - Mode S Range Bias

16 bits [................]

signed quantity

unit: “NM”

LSB = 1/2⁷ NM ≈ 7.81e − 3 NM

Note:

The following formula is used to correct range:

$$\rho_\mathrm{corrected} = \frac{\rho_\mathrm{measured} - range\_bias}{1 + range\_gain}$$

I063/081 - SSR Mode S Azimuth Bias

Definition: SSR / Mode S Azimuth Bias, in two’s complement form.

Structure:

16 bits [................]
signed quantity
unit: “°”
LSB = 360/2¹⁶ ° ≈ 5.49e − 3 °

Note:

The following formula is used to correct azimuth:

θ_corrected = θ_measured − azimuth_bias

I063/090 - PSR Range Gain and Bias

Definition: PSR Range Gain and PSR Range Bias, in two’s complement form.

Structure:

I063/090/PRG - PSR Range Gain

16 bits [................]

signed quantity

LSB = 1/100000 ≈ 1.00e − 5

I063/090/PRB - PSR Range Bias

16 bits [................]

signed quantity

unit: “NM”

LSB = 1/2⁷ NM ≈ 7.81e − 3 NM

Note:

The following formula is used to correct range:

rhomathrm{corrected} = frac{rhomathrm{measured} - range_bias}{1 + range_gain}

I063/091 - PSR Azimuth Bias

Definition: PSR Azimuth Bias, in two’s complement form.

Structure:

16 bits [................]
signed quantity
unit: “°”
LSB = 360/2¹⁶ ° ≈ 5.49e − 3 °

Note:

The following formula is used to correct azimuth:

θ_corrected = θ_measured − azimuth_bias

I063/092 - PSR Elevation Bias

Definition: PSR Elevation Bias, in two’s complement form.

Structure:

16 bits [................]
signed quantity
unit: “°”
LSB = 360/2¹⁶ ° ≈ 5.49e − 3 °

I063/RE - Reserved Expansion Field

Definition: Expansion

Structure:

Explicit item (RE)

I063/SP - Special Purpose Field

Definition: Special Purpose Field

Structure:

Explicit item (SP)

Asterix category 063 - Sensor Status Reports

Preamble

Description of standard data items

I063/010 - Data Source Identifier

I063/015 - Service Identification

I063/030 - Time of Message

I063/050 - Sensor Identifier

I063/060 - Sensor Configuration and Status

I063/070 - Time Stamping Bias

I063/080 - SSR / Mode S Range Gain and Bias

I063/081 - SSR Mode S Azimuth Bias

I063/090 - PSR Range Gain and Bias

I063/091 - PSR Azimuth Bias

I063/092 - PSR Elevation Bias

I063/RE - Reserved Expansion Field

I063/SP - Special Purpose Field

User Application Profile for Category 063