# Presentation: 799917

## ADS-B NOTIONAL ARCHITECTURE

-  OPERATIONAL CONSIDERATIONS/BENEFITS
- ATP-130
- GOMWG/16
- MAY 8-10, 2001

## ASSUMPTIONS

- ADS-B SURVEILLANCE DATA IS CERTIFIED TO A LEVEL OF ACCURACY EQUAL TO/GREATER THAN CURRENT EN ROUTE RADAR
- THAT DATA IS DELIVERED TO THE CONTROLLER IN A FORMAT THAT CAN BE USED FOR CONTROL PURPOSES
- ADS-B EXCLUSIONARY AIRSPACE
- INTERNATIONAL COORDINATION AND REQUIREMENTS COMPLETED....SOME COVERAGEOVERLAP WITH ADJACENT FIRS

## Operational Expectations

- Surveillance will be seamless with existing NAS technology
- Use will be seamless to controllers/pilots
- Standards/training/procedures will mirror current environment
- Any exclusionary airspace will allow for maximum benefit (based on equipage)
- Any exclusionary airspace would be based on altitudes, not routes

## BENEFITS OF RADAR-LIKE SURVEILLANCE..OPERATIONAL

- More accurate positional data available to the controller
- Allows use of reduced separation standards
- Allows use of random RNAV routes
- Navigational Assistance/Vectors
- Assistance avoiding weather/restricted areas
- Assistance during emergencies/unusual situations
- Allows for more dynamic flow control/ATC response to system degradation

## USER BENEFITS, cont.

- MORE EFFICIENT USE OF AIRSPACE
- FASTER RESPONSES TO CLIMB/DESCENT REQUESTS
- MORE DIRECT ROUTINGS (WORKLOAD DEPENDENT)
- MORE ROOM TO PASS!
- MORE CAPACITY PER ALTITUDE/ROUTE
- EASIER TO ACCOMMODATE USER PREFERRED FLIGHT TRAJECTORIES
- REAL-TIME MONITORING OF WX DEVS

## USER BENEFITS, cont>

- “GAME TRAILS” DURING SEVERE WEATHER
- GREATER RETURN ON INVESTMENT IN ADVANCED NAVIGATIONAL SYSTEMS
- GREATER ABILITY TO ACCOMMODATE ONBOARD EQUIPMENT PROBLEMS
- ADDITIONAL CAPACITY ON CROWDED COASTAL ROUTES
- “HIGHER COMFORT LEVEL”
- GREATER SAFETY!!!!!

## Current Operational Scenario

- Air Zoldos  Flt 1001 ....IAH to MIA
- Departs IAH to the west, climbing turn to the northeast
- Joins J86, proceeds eastbound
- Over PEKON requests direct MARCI direct MIA....UNABLE (no unmon random RNAV
- Over NEPTA, AZ1001, capable of Mach .80 cruise, is reduced to Mach .73, spacing behind Orlando-bound Citation

## Current Scenario

- AZ1001 is mad, controller is mad, only person happy is the dot.com billionaire on the Citation taking family to Disney World
- Does get small shortcut over BOXKR to join arrival into MIA(actually get to use RNAV)
- Total distance..... 864 miles (always under radar)
- Gate to Gate.... 2 hour 6 minutes

## ADS Scenario

- Air Zoldos 1001 departs IAH, given initial heading of 110
- Approximately 20 miles offshore (areas cold) controller clears AZ1001 direct Marci then the arrival into Miami
- Approximately 140 miles south of Leeville, ZHU computer seamlessly switches tracking of AZ1001 from onshore radar to buoy based ADS-B tracking system....$ by data tag informs controller aircraft is now being tracked by ADS based system

## ADS Scenario, cont

- 150 miles west of FL coast AZ1001 assigned “best forward”...sequencing ahead of LAX-MIA MD-11 30 miles southwest
- Notices small bizjet to the north struggling to keep up
- 15 minutes from land, AZ1001 requests 20 deg right dev for wx,  controller issues 20 deg vector to climbing opposite direction traffic, then approves AZ1001’s dev

## ADS Scenario, cont

- Total distance.....812 miles
- Gate to Gate.....1 hour 53 minutes
- Saved 52 miles and 13 minutes
- Using profit sharing $$$ saved from increased efficiency, Captain of AZ1001 takes family to DisneyWorld
- Metering delays into ATL drop by 3 minutes due to increased room to vector inbounds, result of offloading a/c to Gulf

## What Users lose........

- No ADS-B, no fly over high sea (at least at certain altitudes/routes
- Where you could deviate before, you can’t deviate now (without ADS-B)
- Full ability to operate non-dedicated fleet in the Gulf area
- Ability to hide from controllers

## System Gains....

- Additional 2.5% of surveilled airspace in the Domestic NAS (lower 48)
- Increased efficiency of operations in the Gulf
- Additional capacity ripples all the way to Cleveland Center
- Safer, more orderly operations in the Gulf
- More dynamic, responsive Traffic Mgt

## OFFSHORE

- ADS-B offers interesting alternative for “on demand” IFR services in offshore airspace
- Benefits to operators during IFR conditions may be enough to offset limited VFR usage
- Portability of system would solve “gap widening” problem of expanded production areas
- High % of aircraft utilize GPS and Datalink...could lower equipage costs

## RADAR   vs  ADS-B

- RADAR

- ADS-B
- Less Limited
- YES
- NO
- ???
- YES
- ???
- ???

**Coverage**
**Accuracy**
**“****C”Factor**
**“****Cost Factor**
**Capacity**
**Reliability**
**Availability**

-    Limited
-      Yes
-      Yes
-      No
-      Yes$$
-      Yes$$
-      Yes

## ADS Questions to be answered

- Can we get a 5 mile standard?
- Can we get it in the next 3-5 years?
- Will it be seamless?
- Can it be jammed, pirated, altered easily
- How much  $$?
- Do we have the footprint?
- Do we have the “connectivity” we need?