EBUS and CENRAP systems

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Questions and Answers

Which statement accurately contrasts the Enhanced Back-Up Surveillance (EBUS) and the Center Radar ARTS Presentation (CENRAP) systems?

EBUS serves as a backup for airport surveillance radar, whereas CENRAP functions as a backup for domestic ARTCCs.
EBUS provides complete radar tracking and display functions identical to the primary system, while CENRAP offers a less accurate backup radar positioning derived from potentially distant ARTCC radar sites. (correct)
EBUS lacks NEXRAD weather data integration, a feature that is fully available in CENRAP.
EBUS relies on a central computer for all software functions, while CENRAP uses microprocessor-based workstations.

In what way does the functionality of EBUS differ from that of the primary radar system it is designed to back up?

EBUS does not incorporate NEXRAD weather data, a critical component of the primary radar system.
EBUS is unable to provide controllers with tracking and display functions.
EBUS's radar data processing is handled by a central computer, unlike the primary system's microprocessor-based workstations.
EBUS lacks the automated flight data processing capability present in the primary system. (correct)

What is the primary advantage of using MEARTS components in the EBUS system?

It ensures that EBUS can function independently of any ground-based radar systems.
It provides a more accurate radar positioning compared to the main airport radar.
It allows EBUS to provide automated flight data processing, which is absent in the primary radar system.
It enables EBUS to offload ATC software functions to individual workstations, improving processing efficiency. (correct)

Under what circumstances would CENRAP typically be utilized?

When the airport surveillance radar is unavailable. (A) Signup and view all the answers

Why might the accuracy of CENRAP be compromised compared to the main radar system?

CENRAP's data may originate from a radar site located far from the main airport. (B) Signup and view all the answers

What key feature distinguishes EBUS from the Direct Access Radar Channel (DARC) system it replaced?

EBUS utilizes components from the MEARTS application, enhancing its radar data processing capabilities. (A) Signup and view all the answers

Which aspect of ATC operations does MEARTS directly enhance?

The processing efficiency of ATC software functions through distributed workstations. (A) Signup and view all the answers

If both the primary radar system and the airport surveillance radar fail, which backup system(s) would be utilized, and what would be the limitations?

EBUS would offer full tracking and display functions but lack automated flight data processing, and CENRAP would provide less accurate radar positioning. (B) Signup and view all the answers

How does the implementation of microprocessor-based workstations in MEARTS affect the overall reliability of EBUS?

It enhances reliability by distributing the processing load, preventing a single point of failure. (A) Signup and view all the answers

What is a key reason why controllers might find EBUS to be a more seamless backup solution compared to CENRAP?

EBUS provides all the tracking and display functions of the prime operating system. (D) Signup and view all the answers

Flashcards

Enhanced Back-Up Surveillance (EBUS)

A backup system at domestic ARTCCs that uses components from the MEARTS application to provide radar data processing.

Microprocessor En Route Automated Radar Tracking System (MEARTS)

An FAA modification to original ARTS equipment, offloading software functions to microprocessor-based workstations.

Center Radar ARTS Presentation (CENRAP)

A computer system that serves as a backup for airport surveillance radar at airports with ARTS. It provides ARTCC radar positioning information via ARTS.

Direct Access Radar Channel (DARC)

Replaced by EBUS, formerly used as the backup system at domestic ARTCCs

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Study Notes

The Enhanced Back-Up Surveillance (EBUS) system replaced the Direct Access Radar Channel (DARC) system as the backup system at domestic ARTCCs.
EBUS uses components from the microprocessor en route automated radar tracking system (MEARTS) application.
MEARTS is an FAA modification to the original ARTS equipment which offloads much of the software functions of ATC to individual microprocessor-based workstations instead of one central computer.
EBUS provides controllers with all the tracking and display functions of the prime operating system as well as NEXRAD weather data.
EBUS has all the functionality of the primary radar system but lacks automated flight data processing (flight strip) capability.

Center radar ARTS presentation (CENRAP)

CENRAP is a computer system used as a backup for airport surveillance radar.
The program is used at airports equipped with ARTS systems.
CENRAP provides ARTCC radar positioning information for display to controllers via the ARTS.
CENRAP can be used if the airport surveillance radar is unavailable.
CENRAP is typically not as accurate as the main radar because the ARTCC data may be derived from a radar site quite a distance from the main airport.

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