Operational Need Technical Challenges Technical Solution System Architecture MDS Performance Experience from Austria (A-SMGCS) Agenda

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DIESER TEXT DIENT DER NAVIGATION

Experience from Austria (A-SMGCS)

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ACAC Surveillance Workhop

Mr. Alfred GULDER Mr. Erwin RISCHAN Mr. Christian SCHEIFLINGER

Agenda



Operational Need



Technical Challenges

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Technical Solution

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System Architecture

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MDS Performance

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Demand of full up-to-date

ground situation awareness

Increased airport throughput and efficiency needed

Why to go for A-SMGCS?

Enhanced procedures for adverse weather conditions needed

Improved surveillance and safety needed Airport

MLAT

based

A-SMGCS

Solution in Vienna

Airport Stackholders Live-Data Predicted-Data

Increased Airport Throughput Advanced Ground-Suveillance Prozess Optimization Resources Optimization Safety

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MLAT

based

A-SMGCS

Solution in Vienna

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Available Sensors for Vienna A-SMGCS

Solution (AviBit)

– 3 Surface Movement Radar Systems (Terma, Sensis)

– Direction Finder (R&S)

– 2 SSR Radars (THALES, Cassidean)

– Flight Plan Data Base (THALES)

– Runway Lighting System (SIEMENS)

– Multilateration Sensors including ADS-B (SENSIS)

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Q A Concept based on Time Difference of Arrival (TDOA) processing.

– A TDOA-based system measures the difference in time between reception of a signal at multiple known positions and uses this information to calculate the location of the signal source.

– In the two-dimensional problem of surface surveillance, the TDOA at each pair of sensors has a single distinct curve upon which the transponder is located. Data from three sensors permits the system to create three solution arcs—the intersection of which is the location of the transponder.

 A Concept based on Time Difference of Arrival (TDOA) processing.

– A TDOA-based system measures the difference in time between reception of a signal at multiple known positions and uses this information to calculate the location of the signal source.

– In the two-dimensional problem of surface surveillance, the TDOA at each pair of sensors has a single distinct curve upon which the transponder is located. Data from three sensors permits the system to create three solution arcs—the intersection of which is the location of the transponder.

Time of Arrival in C: TOA3

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Example of MDS System Components

MLAT-Sensors (Remote Units) Redundant Central Processing Station Serial Interface Unit Target Processor (Hot/Stdby) Reference Transmitters

SENSIS MDS System Components

Remote Unit R/T (Receiver/Transmitter)

Remote Unit R/O (Receiver only)

RefTrans (Reference Transponder)

CPS (Central Processing Station) 8 Units

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Sites – placed throughout Airport Area

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Final Results for Mode A/C

Additional Optimization In Tricky Area

Before Optimization Phase II

After Optimization Phase II

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Final Result PD

AREA Elapsed Time Num Positions Updates w/ error <= 7m Probability of Detection RW 16/34 Mode-S 1137.40 2011 98.56% 0.9998 RW 16/34 ATCRBS 1440.25 4548 99.34% 0.9992 TW Oskar/India Mode-S 418.08 975 98.97% 0.9999 TW Oskar/India ATCRBS 597.63 1577 99.30% 0.9996 RW 11/29 Mode-S 901.66 1574 98.03% 0.9999 RW 11/29 ATCRBS 921.04 2242 98.75% 0.9999 Required 98% 0.98 Total 5416 12927 98.92% 0.9996

Controller Working Position

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Approach Situation Window shows the air situation in the area around the airport.

Background Window shows Ground Movement Situation Approach Estimate Window

shows when the next aircraft are expected to land.

Flightplan Information Window show the inbound and outbound flights for the next hours.

HMI - MAIN WINDOW 17

ALERTING FUNCTIONS

The use of MLAT enables:

RUNWAY INCURSION

STOPBAR CROSSING

AREA INFRINGEMENT

AIRCRAFT SEPARATION

TAXIWAY COLLISION

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ASTOS

RUNWAY INCURSION ALERTING:

ASTOS checks the runway if an aircraft is about to land or to takeoff. if any object is detected on the runway ASTOS generates an alert by highlighting the affected runway as well as the offending target.

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STOP-BAR CROSSING ALERT:

ASTOS is connected to the airport lighting system for knowing the present status of stop-bars and trigger an alert by

highlighting the affected stop-bar.

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AREA INFRINGEMENT ALERT:

ASTOS alerting the controller in case of an unauthorized vehicle or aircraft entering one of these areas by highlighting the area as well as the offending target.

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ASTOS

AIRCRAFT SEPARATION MONITOR: Moving aircraft are continuously checked for their distance to each other related to their speed. An alert is generated when aircraft are moving too close to each other.

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TAXIWAY COLLISION MONITORING: During taxiing, aircraft’s speed and position are continuously monitored. If two aircraft are predicted to collide ASTOS generates an alert.

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