Mode S

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Term Mode S
Status


Mandatory for


Contexts


Categories
Synonyms


Related entries

secondary surveillance radar (SSR)

Broader term


Narrower term


Abbreviation

Definition

An enhanced mode of SSR that permits selective interrogation and reply capability.

Definition Source

ICAO (2004) doc. 9684 Manual of the Secondary Surveillance Radar (SSR) Systems

Note

Whilst traditional Secondary Surveillance Radar (SSR) stations interrogate all aircraft within their range, Mode S establishes selective and addressed interrogations with aircraft within its coverage. Such selective interrogation improves the quality and integrity of the detection, identification and altitude reporting. These improvements translate into benefits in terms of safety, capacity and efficiency - benefits which are key to supporting the future of the high-traffic density airspace of Europe.

Note Source

EUROCONTROL, CFMU Glossary, Sept. 2011