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Eurocontrol Software Tools for Frequency Management. 1- Background. 2- Databases. 3- MANIF for day-to-day. 4- PLANIF for Block Planning. 5- SENSI for VHF voice forecast & simulation. 6- PLANAIDS for Navaids forecast & simulation. 1 - Background: Beginning of the ninety’s.

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slide1

Eurocontrol Software Tools for Frequency Management

1- Background

2- Databases

3- MANIF for day-to-day

4- PLANIF for Block Planning

5- SENSI for VHF voice forecast & simulation

6- PLANAIDS for Navaids forecast & simulation

slide2

1 - Background: Beginning of the ninety’s

  • Find a technical solution against the European VHF congestion

=> Preference to 8.33 kHz;

Introduced in October 99 in 7 Initial States for FL>245

  • Need for a robust and reliable

assignment database & frequency software

=> COM table database (Oracle database) &

ODET (Oracle Database Exchange Tool) for their maintenance

=> MANIF (day-to-day frequency tool) &

PLANIF (Block Planning frequency tool)

slide3

1 - Background: End of the ninety’s

  • 8.33 kHz in the 7 Initial States For FL>245?
    • Enough?
    • Beneficial?
    • Alternate solution?

=> SENSI (forecast & simulation tool)

  • Requirements & strategy of the Navaids frequency band.

=> PLANAIDS (forecast & simulation tool)

slide4

2 - Databases:

  • At present,
      • COM2 Table
      • COM3 Table => downloads for MANIF
      • COM4 Table
  • COM2 Table => downloads for PLANIF & SENSI
  • COM3Table
  • DEMETER

=> downloads for PLANAIDS

  • In the future,
      • SFMS => downloads for MANIF, PLANIF, SENSI & PLANAIDS
slide5

3 - MANIF for States day-to-day frequency management of:

  • COM2 table i.e. Voice communication (117.975 - 137.000 MHz)
  • COM3 table i.e. ILS Localiser, VOR & GBAS (108.000 - 117.975 MHz)

ILS Glide path (328.6 - 335.4 MHz)

DME (960 - 1215 MHz)

MLS (5000 - 5250 MHz)

  • COM4 table i.e. NDB and Locator (130 – 5235 kHz)
  • COM5 table i.e. List of COM3 and COM4 Ident. code
slide6

3 - MANIF Functions:

  • ICAO COM tables import functions,
  • Assignment database management,
  • Polygon database management,
  • Frequency compatibility check,
  • Frequency search,
    • Including Shifting existing frequencies
  • Graphic display of coverage and protection areas.
slide7

3 - MANIF Planning & Compatibility criteria:

MANIF Planning & Compatibility criteria in line with the EUR Frequency Management Manual that takes into account of :

  • Coverage (including max FL) of the services (circ/sectors), i.e. DOC
  • Power of desired and undesired transmitters,
  • Frequency gap between desired and undesired services,
  • Pairing (double/triple pairing : VOR-DME, ILS-DME, MLS-ME,…
  • Harmonic level (used for VOR/VOR adjacent channel separation),
  • Problems due to existence of unpaired DME or TACAN

in the line of sight of an unpaired VOR.

slide8

4 - PLANIF for the supporting the bi-annual block planning meetings for the VHF band Voice com services

The objectives of the planning process:

States’

Requirements

  • Be efficient in spectrum allocation

=>use of an optimization strategy

COM2 table

checked and

corrected

ARB Assessment &

Final list of

requirements

PLANIF

RUN

  • Minimize the shifts for

the whole block planning

  • Limit the maximum shifts

for each individual requirement

  • Maximum solutions

but ! priority level

RESULTS

PLANIF Planning & Compatibility criteria in line with

the EUR Frequency Management Manual

slide9

4 - PLANIF for the VHF block planning meetings

PLANIF’s Optimization Strategy:

1. A weight is given to each existing assignment

=> equal to the number of available frequencies

=> each existing assignment get an EASY or NONEASY status

2. Each Need is processed

=> Available frequencies

=> Weight

=> EASY or NONEASY status

3. Needs are processed from the most NONEASY to the EASIest

slide10

4 - PLANIF for the VHF block planning meetings

PLANIF’s Optimization Strategy:

4. The "best" solutions are those corresponding to frequencies :

=> already used by another need,

=> with a minimum number of remaining needs capable to use the frequency,

=> implying a minimum of shifts.

5. New frequencies are searched for requested shifts (No shift for them).

6. If all requested shifts can not be satisfied, a "Feed-back" is done :

=> Unsatisfied shifts are considered as non shiftable and the planning

process restarts from step 2.

slide11

5- SENSI for the analysis of the VHF spectrum capacity from the medium to the long term

Estimation of the future demand (from the last BPs)

SENSI for forecast = execute a loop of BPs

  • SENSI for simulation = execute modification

- in database & needs

- in Planning criteria & compatibility

COM2 table

Apply RUN1

Apply RUNX

Apply RUN2

Apply

modification

Results

Estimation of

the future demand

SENSI

slide12

5 - SENSI for VHF band forecast and simulation

Different scenario have been made to assess the impact

On the VHF Spectrum 118-137 MhZ when :

  • 8.33 introduction, horizontal and vertical extension,
  • modification of separation criteria,
  • limitation of DOC,
  • withdrawal of services,
  • reduction/increase of available bands
slide13

5 - SENSI for VHF band forecast and simulation

  • Example : extract from

VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002

slide14

5 - SENSI for VHF band forecast and simulation

  • Example : extract from

VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002

=> Propose strategies for the future

slide15

6 - PLANAIDS : for the analysis of the NAVAIDS spectrum capacity from the medium to the long term

Estimation of the future demand

PLANAIDS for forecast = execute a loop of BPs

  • PLANAIDS for simulation = execute modification

- in database & needs

- in Planning criteria & compatibility

COM3 table

Apply RUN1

Apply RUNX

Apply RUN2

Apply

modification

Results

Estimation of

the future demand

PLANAIDS

slide16

6 – PLANAIDS simulations

Different scenario have been made to assess the impact on Navaids spectrum when :

  • modification of separation criteria,
  • withdrawal/addition of services,
  • introduction of new services such as GBAS,
  • reduction of available band

(e.g. DME band in the perspective of GNSS)

  • impact of the DME pairing constraints.

=> Propose strategies for the future