Back to: "S"
SIL
- Usado para
- surveillance integrity level
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Technical provision for mode S services and extended squitter. 2nd. ed. Montreal, 2012. (Doc. 9871 AN/460).
- Nota adicional1
- Applications using reports from ADS-B Version One (1) participants may be able to use the Surveillance Integrity Level to derive both Source Integrity Level and System Design Assurance (SDA).
- Nota adicional2
- New Source Integrity Level parameter replaces Surveillance Integrity Level. SIL Supplement and SDA uses reserved bits that will not be decodable.
- Contexto
- In ADS-B Version One (1), the Surveillance Integrity Level parameter represented this probability as well as other elements of integrity. The Surveillance Integrity Level may have also included the reliability of the aircraft systems given by a failure rate corresponding to the equipment design assurance. In ADS-B Version Two (2), this aspect of integrity is represented by the System Design Assurance (SDA) parameter. The ADS-B Report Assembly Function shall extract the Surveillance Integrity Level data from Aircraft Operational Status Messages and the Target State and Status Messages and provide the Source Integrity Level to the user application in the Mode Status Report in the binary format.
- The position quality in Version 1 extended squitter messages is provided by the Navigational Accuracy Category (NACP), Navigational Integrity Category (NIC), NIC Supplement, and Surveillance Integrity Level (SIL) parameters.