Final Report on Mode S Monitoring of ACAS

208 Pages·2002·1.75 MB·English

ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
ACAS PROGRAMME
ACASA PROJECT
Work Package 7
Final Report on
Mode S Monitoring of ACAS
ACAS/ACASA/02-018
Edition : 1
Edition Date : March 2002
Status : Released Issue
Class : EATMP
ACASA/WP-7/220D March 2002
Version 1.1 Page i
ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
DOCUMENT IDENTIFICATION SHEET
DOCUMENT DESCRIPTION
Document Title
ACAS PROGRAMME ACASA PROJECT
Work Package 7
Final Report on
Mode S Monitoring of ACAS
EWP DELIVERABLE REFERENCE NUMBER:
PROGRAMME REFERENCE INDEX: VERSION: 1.1
EDITION DATE: March 2002
Abstract
The objective of this study was to provide the ability to instigate automatic monitoring for all types
of Mode S information that relate to ACAS
Keywords
ACAS TCAS RVSM TA RA
CONTACT PERSON: Garfield Dean TEL: [phone] UNIT: EEC Brétigny
Authors: Garfield Dean (EEC)
DOCUMENT STATUS AND TYPE
STATUS CLASSIFICATION
Working Draft (cid:1) General Public (cid:1)
Draft (cid:1) EATMP (cid:2)
Proposed Issue (cid:1) Restricted (cid:1)
Released Issue (cid:2)
ELECTRONIC BACKUP
INTERNAL REFERENCE NAME:
HOST SYSTEM MEDIA SOFTWARE
Microsoft Windows Type: Hard disk
Media Identification:
____________________________________________________________________________________________
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ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
DOCUMENT APPROVAL
The following table identifies all management authorities who have successively approved the
present issue of this document.
AUTHORITY NAME AND SIGNATURE DATE
ACASA Project 4 March 2002
Manager
Garfield Dean
ACAS Programme 9 March 2002
Manager
John Law
Director Infrastructure, 20 March 2002
ATC Systems &
Support
Guido Kerkhofs
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ACAS PROGRAMME, ACASA PROJECT
Work Package 7 – Mode S Monitoring of ACAS
Document control sheet
Title: WP-7- Mode S Monitoring of ACAS
Authors: Garfield Dean (EEC)
Reference: ACASA/WP-7/220D
Pages: Cover & reverse + iv+16
Version Date issued comments
1 31 December Final Report
1.1 1 March 2002 Editorial changes to merge
WPs 7/220D/060D/143D/150D/174D in
ACASA Project Final Report: Released Issue
____________________________________________________________________________________________
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ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
Work Package 7:
Mode S Monitoring of ACAS
WP7: Final Report on Mode S Monitoring of ACAS
Version: 1.1
Prepared by Garfield Dean
ACASA/WP-7/220D March 2002
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ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
TABLE OF CONTENTS
DOCUMENT IDENTIFICATION SHEET............................................................................................iii
DOCUMENT APPROVAL......................................................................................................................iv
TABLE OF CONTENTS...........................................................................................................................2
LIST OF ACRONYMS..............................................................................................................................3
1 Introduction..............................................................................................................4
2 Mode S ACAS Events Analysis................................................................................6
3 Automatic Safety Monitoring Tool – Mode S extention.........................................8
4 Detecting Anomalies in Mode S Parameters.........................................................10
5 Parallel recording of ACAS related 1030 and 1090 MHz signals........................12
6 Conclusions............................................................................................................13
7 Recommendations..................................................................................................14
8 References...............................................................................................................15
9 Annexes...................................................................................................................16
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Work Package-7- Mode S Monitoring of ACAS
List of Acronyms
ACAS Airborne Collision Avoidance System
ACASA Airborne Collision Avoidance Systems Analysis
ASMT Automatic Safety Monitoring Tool
ASTERIX All-purpose STructured Eurocontrol Radar Information eXchange
(a radar data format)
ATC Air Traffic Control
CENA Centre d'Etudes de la Navigation Aérienne
CPA Closest Point of Approach
EEC EUROCONTROL Experimental Centre
FL Flight Level
HMD Horizontal Miss Distance
HRA Horizontal Resolution Advisory
ICAO International Civil Aviation Organisation
MADREC MADAP Records (a radar data format)
MUAC Maastricht Upper Airspace Centre
MOPS Minimum Operational Performance Standard
NM Nautical Miles
NMAC Near Mid Air Collision
OSCAR Off-line Simulator for Collision Advisory Resolution
POEMS Pre-Operational Experimental Mode S system.
RA Resolution Advisory
RDPS Radar Data Processing System
SARPS Standard and Recommended Practices
SICASP SSR Improvements and Collision Avoidance Systems Panel
SSR Secondary Surveillance Radar
TA Traffic Advisory
TCAS Traffic alert and Collision Avoidance System
TEN Trans European Networks
UK NATS UK National Air Traffic Services
VMD Vertical Miss Distance
WINTSAR WINdows Tool for Selective ASTERIX Recording
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ACAS PROGRAMME, ACASA PROJECT
Work Package-7- Mode S Monitoring of ACAS
1 Introduction
1.1 Background and context
1.1.1 The Airborne Collision Avoidance System (ACAS) has been defined by the
International Civil Aviation Organisation (ICAO). It uses Mode S signals to perform
surveillance, to co-ordinate resolution advisories (RAs) between aircraft, and also to
report RAs to the ground.
1.1.2 The correct functioning of the Mode S is essential to ACAS operations. This needs to
be monitored. In addition, monitoring of resolution advisories allows assessment of
whether ACAS continues to provide its expected safety benefits.
1.2 ACASA project
1.2.1 The TEN (‘Trans European Network’) / ACASA (‘Airborne Collision Avoidance
Systems Analysis’) project investigates several areas related to ACAS II operations in
Europe [WP001].
1.2.2 The ACASA/WP7 (‘Work Package’) developed equipment for monitoring ACAS
related Mode S signals, and analysed results from such equipment.
1.2.3 The ACASA partners involved in this study were:
(cid:1) CENA (‘Centre d'Etudes de la Navigation Aérienne’) and Sofreavia: responsible
for investigating RA data collected by Mode S.
(cid:1) DFS: responsible for developing the requirements and specification of a radio
field monitor for ACAS and SSR.
(cid:1) EEC (EUROCONTROL Experimental Centre): responsible for developing
operational equipment to automatically record RA and environmental data when
an RA is detected by Mode S.
(cid:1) QinetiQ: responsible for recording and analysing Mode S parameters that have an
impact on ACAS.
(cid:1) UK National Air Traffic services (UK NATS) gave permission to use their Mode
S data.
1.3 Objective
1.3.1 The objective of this study was to provide the ability to instigate automatic monitoring
for all types of Mode S information that relate to ACAS
1.4 Work Breakdown
1.4.1 Originally 5 tasks were foreseen:
(cid:1) WP7.1: Automate Mode S RA operational reporting
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(cid:1) WP7.2: RA monitoring with POEMS (Pre operational Experimental Mode S
System)
(cid:1) WP7.3: Perform monitoring of ACAS related radar replies
(cid:1) WP7.4: Performance monitoring of ACAS related 1030 and 1090 signals
(cid:1) WP7.5: Analysis of RAs and other data
(cid:1) WP7.6: Co-ordination between tasks and synthesis
1.4.2 During the course of the ACASA project, the first two tasks were merged.
1.5 Structure of the document
1.5.1 Three studies and one software development planned for WP7 of the ACASA project
have been completed. This final report summarises the main results and briefly
describes the software.
1.5.2 The analysis of RA recordings is reported in section 2. The third section presents the
software to perform automatic recording of RAs. Section 4 contains the results of
monitoring some (non RA) Mode S parameters that are relevant to ACAS. Section 5
discusses the requirements for a radio field monitor for ACAS and SSR. This report
ends with some concluding remarks about the studies and includes some
recommendations.
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2 Mode S ACAS Events Analysis.
This section summarises the CENA/Sofreavia analysis of the RAs detected by Mode S between
November 1996 and October 1997 [WP060D].
2.1 Data Collection Method
2.1.1 The following figure summarises the operations and tools used to collect and analyse
the ACAS events provided by a Mode S station.
Radar Surveillance Flight Plans
(SSR) Processing (RDPS)
ASTERIX files
Data Collection
(WINTSAR)
ASTERIX files
Data Translation
(AST2MAD)
MADREC files
Data Extraction Simulation
(STATMAD) (OSCAR)
Text files Text files
Basic Analysis Enhanced Analysis
2.1.2 Mode S, SSR and flight plan data were captured from one minute before to one
minute after an RA by WINTSAR (WINdows Tool for Selective ASTERIX
Recording) - a tool for recording radar data transmissions in order to assist the
experimentation and pre-operational installation of Mode S.
2.1.3 The captured data was in the ASTERIX (All-purpose STructured Eurocontrol Radar
Information eXchange) format. However, the analysis tools all worked with
MADREC (MADAP RECording) format. A small tool was built to convert the data
between the two formats (AST2MAD).
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