* According to MASPS DO236-A
Depending on the RNP accuracy the following distinction can be made:
RNP1 RNAV RNP3 RNAV Functionalities specified by JAA (EASE) determine area of application
ENR TA up to FA WPT Below MSA/MRVA ENR TA inside FA WPT Below MSA/MRVA
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Attachment C.4-2
Understanding the ATC System: Constraint or Enabler
This Attachment provides a high-level description of the basic principles of an ATC system. It is presented with a view to increasing awareness of the role played by the ATC system in the Terminal Airspace Design concept. With this objective in mind, a general description of the ATC system is provided first, and then a selection made of certain components because of their relevance to Terminal Airspace design.
Designers’ attention is drawn to the fact that the need to understand the technical capabilities and limitations of the ATC system should not be under-estimated. The same can be said of the requirement to ensure that a proposed Terminal Airspace design can be supported by the ATC system. As a basic rule, it may be stated that the more complex the design of a Terminal Airspace, the greater the demands made on the technical capabilities of the ATC system.
. GENERAL TECHNICAL DESCRIPTION OF THE ATC SYSTEM
In simple terms, it may be stated that the basic aim of the technical ATC system is to get the data related to a flight to relevant controllers in a timely and complete manner.
In a technical ATC system, the main data carrier is called a flight plan. It is often referred to as a System Flight Plan or a Current Flight Plan and FPL, SFPL or CPL are commonly used abbreviations.
In general terms, it can be stated that the technical ATC system generally consists of three main components:
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Flight Data Processing (FDP)
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Radar Data Processing (RDP)
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Display System or Human Machine Interface (HMI)
From a Terminal Airspace Design perspective, the following sub-components of the system are also relevant:
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Environment Data Processing (ENV)
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Flight Plan Distribution (DIS)
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(Flexible) Sectorisation (SEC)
The following diagram provides an overview of the relations between main components and sub-components of the technical ATC system.
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DESCRIPTION OF SPECIFIC COMPONENTS OF THE ATC SYSTEM
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Environment Data Processing (ENV)
Environment Data Processing refers to the management of Route-points, Routes and Sector shapes etc. This is called static Environment data. In order to determine the feasibility of implementing a design, the designer should ensure that the design can be incorporated in the Environment data. (This is especially important with complex Terminal Airspace designs). In order to whether the design concept can be incorporated into the Environment data, the following questions could be asked::
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本文链接地址：EUROCONTROL MANUAL FOR AIRSPACE PLANNING 2(32)
