1 / 17

TCAS Resolution Advisory Monitoring System (TRAMS) Carl B. Jezierski Airborne Team AJP-651

TCAS Resolution Advisory Monitoring System (TRAMS) Carl B. Jezierski Airborne Team AJP-651 Research & Technology Development 15 October 2008 Aerospace Control and Guidance Systems Committee Meeting #102. Topics. A Brief History of TCAS TCAS Theory of Operation

bryar-gallagher
Download Presentation

TCAS Resolution Advisory Monitoring System (TRAMS) Carl B. Jezierski Airborne Team AJP-651

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TCAS Resolution Advisory Monitoring System (TRAMS) Carl B. Jezierski Airborne Team AJP-651 Research & Technology Development 15 October 2008 Aerospace Control and Guidance Systems Committee Meeting #102

  2. Topics • A Brief History of TCAS • TCAS Theory of Operation • TCAS and the ATC Mode S Radar Environment • Purpose and Requirements for TCAS Monitoring • TRAMS Architecture • TRAMS Data Collection and Processing • TRAMS Data Flow • TRAMS Deployment

  3. A Brief History of TCAS • TCAS V6.04(a) • TCAS V7.0 RTCA DO-185A • Recent Logic Changes (1) • V7.1 RTCA DO-185B • RA Reversal Logic “SA01” • AVSA • Recent Logic Changes (2) • Hybrid Surveillance • TRAMS – TCAS Resolution Advisory Monitoring System • RTCA SC-218 (Future ADS-B/TCAS Relationships) • Systems engineering analysis plan – September 08 • Perform systems engineering analysis – July 09 • TCAS on UAS

  4. TCAS Theory of Operation • Airborne Platform • Transponder-based • TCAS I Traffic Alerts (TA) Only • TCAS II TA and Resolution Advisory (RA) Generation • Coordination of vertical maneuvers with other aircraft • 18 second RA broadcast transmitted

  5. Purpose and Requirements for TCAS Monitoring • The TCAS RA Monitoring System (TRAMS) is a new distributed ground-based system that will capture airborne RA communications and related surveillance data in real-time and transmit this information daily to a central facility for analysis and archive. The overall goal of TRAMS is to enable analysis of TCAS performance and facilitate changes in the airspace. Specifically, the mission objectives are to: • Comply with the Safety Management System requirement to monitor new systems introduced into the NAS environment to protect against NAS performance degradation. • Provide a database of actual Resolution Advisories (RA) and associated surveillance data for post analysis of TCAS operational performance. • Provide a database of selected surveillance data for future research.

  6. TCAS and the ATC Mode S Radar Environment • Types • Terminal radar (60 nm, 360° every 4.75 seconds) • Enroute radar (200 nm, 360° every 12 seconds) • Default Programming • Ground site interrogates the aircraft’s transponder to determine equipage • Site Specific Programming • If RA broadcast detected, interrogate the transponder for the RA specifics

  7. Collision Event TRAMS Remote Site FAA Technical Center TRAMS Central Site Resolution Advisory (RA) and Surveillance Data TRAMS Remote Site TRAMS Remote Site TRAMS Remote Site TRAMS Remote Site TRAMS Architecture

  8. TRAMS Architecture • 20 TRAMS Remote Sites • Denver is the only TRAMS Remote Site based at an enroute radar

  9. Ground Station Surveillance Network TRAMS Remote Site Network SCAP Boundary GPS Antenna Other Devices Data Recorder (Linux) Ethernet - CAT 5e Ethernet - CAT 5e NTP Time Server * Network Hub Switch UDP Ethernet - CAT 5e Data Processor Surveillance (Linux) Ethernet - CAT 5e Channel A TDIC-B Comm-B RS-232 Mode S Data Processors Secure Modem Surveillance Channel B TRAMS Central Site TDIC-B Comm-B PSTN (Public Switched Telephone Network) SCAP Boundary TRAMS Architecture (Remote Site Configuration)

  10. TRAMS Data Collection and Processing • Remote Site Data Collection • Equippage (transponder & TCAS types) • For tracks declaring a RA and tracks not declaring an RA but would otherwise be reasonably expected to: • The RA message • Surveillance data • 3rd party surveillance data • Surveillance data for tracks exhibiting altimetry anomalies • Remote Site Processing (Daily Summaries) • Flight operations by equipage • Environmental density by equipage & altitude bands • Estimates of TA and RA rates for collision risk assessments

  11. TRAMS Architecture (Remote Site Configuration)

  12. SCAP Boundary GPS Antenna NTP Time Server Ethernet – CAT 5e Secure Modems TRAMS Central Processor PSTN (2 lines with provision for an additional line) RS-232 DVD / CD-ROM Burn Capability Line #1 1 USB Line #2 RS-232 2 Converter RS-232 To USB RS-232 Expansion Line #3 3 SCAP Boundary TRAMS Architecture (Central Site Configuration) • Initial data analysis of TRAMS collected data • Quick look – visualization of selected tracks • Autoanalysis – isolation of “interesting” RA tracks

  13. TRAMS Data Flow

  14. TRAMS Deployment • Three test sites. • PHL (April 2008) • JFK (July 2008) • LAX (November 2008) • SCAP testing December 2008 – February 2009 • TRAMS Deployment begins in Mar 08 at DFW. • New site installed about every 3 weeks thereafter. • Continuous data collection and analysis up to and including FY 2011. • Permanent data collection and daily summaries beyond FY 2011.

  15. Backup Slides

  16. A Brief History of TCAS (2)

More Related