How will radar systems be used in FAA's NextGen ATC plans?

kaliatech
  • How will radar systems be used in FAA's NextGen ATC plans? kaliatech

    Based on the reading I've been doing of FAA's Next Generation Air Traffic Control (NextGen) plans, I've been wondering if and how radar systems will continue to be used for ATC as NextGen rolls out?

    Questions include:

    • Is it correct to assert that radar coverage will effectively become a less precise, backup only, data feed? I am suggesting this because my understanding (which could easily be incorrect) is that ADS-B will mandated for most (everyone?) and so aircraft will be actively reporting their precise position without the need for a radar track.

    • Will existing radar coverage eventually be phased out? Seems unlikely due to airspace security issues alone. But are there any other reasons to keep radar coverage?

  • Under ADS-B rule of the FAA aircraft operating in Classes A, B, and C airspace, as well as certain other specified classes of airspace within the U.S. National Airspace System are required to operate ADS-B Out avionics.

    This means that these aircraft can be tracked without the use of radar. These ADS-B tracks will be more accurate than radar tracks and have a higher update rate. However for reasons of integrity, continuity of service and security, radar will continue to provide coverage. Currently a lot of airspace is covered by multiple radar layers, the introduction of ADS-B allows for a reduction in redundant radar coverage.

    Aircraft not equipped with ADS-B (operating outside of class A,B, or C airspace) will be tracked using radar. The radar tracks will be broadcast on TIS-B (Traffic Information Service - Broadcast) so that aircraft with ADS-B In receivers detect these aircraft as well.

Related questions and answers
  • Based on the reading I've been doing of FAA's Next Generation Air Traffic Control (NextGen) plans, I've been wondering if and how radar systems will continue to be used for ATC as NextGen rolls out? Questions include: Is it correct to assert that radar coverage will effectively become a less precise, backup only, data feed? I am suggesting this because my understanding (which could easily be incorrect) is that ADS-B will mandated for most (everyone?) and so aircraft will be actively reporting their precise position without the need for a radar track. Will existing radar coverage eventually

  • Generally speaking, What programming language is used in aviation for (ATC Radio, Radar, ILS, Auto-pilot and on-board avionics)? Is there a standard enforced by ICAO? Does every plane manufacturer use the programming language they like as long as it's reliable and it goes through testing? I remember watching a documentary on YouTube last year about aviation and it said something about the EU, after WWII, started making standards for aviation systems inside Europe. I will link the video if I can find it

  • I enjoy tracking air traffic at my local KORD. I listen on LiveATC and use my private virtual radar setup to get "real-time" traffic info. I understand which instructions need to be read back... and speed adjustments). I tend to notice this with bigger birds (777,747,340), however smaller regional jets almost always promptly read back. Questions: Is there an alternative way of ATC instruction acknowledgement? (Other than read back?) Is it possible that the reply is somehow on a different frequency? Is this just a problem with LiveATC? (One theory is that A/C leaves receiver coverage area

  • Primary target: An aircraft not reporting mode-C, the only thing the controller has is the return on the radar. When a controller reports a primary target as traffic to other aircraft, the controller does not have the altitude of the target. Given this, I conclude that ATC radar does not have the altitude (angle-up) to the target, and only provides azimuth. So then without the altitude, how... miles out. However, if the target is at 15,000ft, the proper position would be 9.5 miles out. Since the difference is so small, does the radar just put the target at 10 miles, and the FAA separation

  • In a full motion Level C or D simulator like those used by the airlines and for jet type ratings: How should a pilot log the simulator time in their logbook? I.e. Can you log: Total Time Instrument Time Time in Type Cross Country Time Night Time Landings (including night landings) Dual given/received Anything else?

  • Are airspace violations (e.g. entry to class B without clearance) based on primary radar and/or Mode C transponder, or something else? I read that Mode C altitude is based on pressure altitude, i.e., set to 29.92" ... but presumably that's adjusted at the ATC facility based on the current pressure before being used for altitude enforcement. This begs the question, what would stop one (hypothetically), just winding back the altimeter pressure reading to appear to be at a lower altitude? So to summarize: How are airspace violations detected: What data input is used? If Mode C reading

  • The alpha vane is an external probe used to measure the angle of attack. I have been trying to understand how exactly it works, but I can't find any clear explanation or simulation. Is the vane static or dynamic i.e. does it rotate along its central axis? Given that it has a significant surface area, I think that it would either: Rotate because of the force/drag exerted by the airflow, and give an angle of attack proportional or equal to its angle of rotation Measure the force being exerted on it via a force sensor embedded in the surface Is either of these correct? In short, how

  • Oxygen masks vs cannulas Qantas 94 Heavy

    There are two main types of supplementary oxygen devices in light aircraft: Cannula: Oxygen mask: What are the major differences between these two devices? Is one more suitable for specific si...

  • Air Force One is obviously a big deal. We close terminals and implement other seemingly crazy safeguards against terrorist attacks while the president is en-route to an airport. How does ATC protect the president whilst in the air? I have heard of TFRs for "VIP in the area" reasons — is that for AF1? I am guessing that the aircraft identification is blocked, but wouldn't they still need to have the transponder on for TCAS? Specifically, the Wikipedia page on Air Force One has the following quote: Air traffic controllers gave Air Force One an ominous warning that a passenger

  • How does autobrake work? Gabriel Brito

    An autobrake is a type of automatic wheel-based hydraulic brake system for advanced airplanes. The autobrake is normally enabled during takeoff and landing procedures, when the aircraft's longitudinal deceleration system can be handled by the automated systems of the aircraft itself in order to keep the pilot free to perform other tasks - Wikipedia How does the aircraft "know" when is time to activate the autobrake systems on a rejected takeoff and landing? Does it apply full brake to all the aircraft's wheels? Is it really used by commercial jets?

Data information