1- Background

1. 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

2. 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)

3. 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)

4. 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

5. 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

6. 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.

7. 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.

8. 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

9. 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

10. 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.

11. 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

12. 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

13. 5 - SENSI for VHF band forecast and simulation • Example : extract from VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002

14. 5 - SENSI for VHF band forecast and simulation • Example : extract from VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002 => Propose strategies for the future

15. 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

16. 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