European Commission

International Civil Aviation Organization

Status of industry standards

for GNSS

CAR/SAM ATN/GNSS Seminar

Varadero, Cuba, 6 to 9 May 2002

Presentation GNSS 4.1 by E. Chatre

European Commission

MASPS

ICAO SARPs

Industry Standards : Where do they fit ?

SIS

MOPSReceivers

MOPSGround equipments

European Commission

EUROCAE

The European Organisation for Civil Aviation Equipment (EUROCAE) was created in 1963.

Forum in Europe where administrations, airlines and industry could meet to discuss technical problems

It develops minimum performance specifications for airborne and ground electronic equipment.

EUROCAE documents are considered by Joint Aviation Authorities to be referenced by the Joint Technical Standard Orders

The main European administrations and the main aircraft and equipment manufacturers are members of EUROCAE

Relevant groups for GNSS are WG 28 and WG 62

European Commission

RTCA

RTCA is a non profit organisation in the United States

(Headquarters in Washington DC)

Powerful forum for standardisation of aviation user

equipment

FAA is using these standards as a basis for Technical

Standard Orders (TSOs) used during aircraft certification

Strong involvement of industry (airframe manufacturer,

ground and airborne equipment manufacturers, FAA…)

Very active in the frame of GNSS : relevant group is

SubCommittee SC 159

European Commission

Minimum Operational Performance Specifications (MOPS)

This is one of the standards developed by both EUROCAE

and RTCA. It specifies technical charateristics for either

airborne or ground sub-systems.

Typical table of Content is :

- Introduction/Purpose

- Classification of equipments

- Technical requirements

- Testing requirements

- Installed performance section

European Commission

EUROCAE WG 28 : GPS

SG 1 was in charge with SBAS (EGNOS, WAAS) :

dormant

SG 2 is in charge with GBAS ground segment

ED 95 (Nov 99) : MASPS GBAS Cat I

Preparation of ED 95A (update based on latest ICAO

GNSSP definition of GBAS)

Preparation of MOPS for ground station (End 2002)

SG 3 is in charge with Multi Mode Receiver

Preparation of ED 88A MOPS for MMR including GBAS

SG 4 is in charge of preliminary studies on Cat II/III

European Commission

EUROCAE WG 62 : GALILEO

Working group created to deal with standardisation of GALILEO

First meeting held on January 15th

Objectives

To produce a list of working assumptions for the operational concept for use of GNSS

Draft version by the end of 2002

Consolidated version in 2003

To produce a MOPS for airborne equipment Initial MOPS for development of receiver end 2004

Final MOPS issued by 2008

To develop documentation for standardisation of precision approach equipment (ground and airborne)

This will be done in conjunction with WG 28

European Commission

RTCA SC-159

WG 1 is working on definition of GPS L5 ICD

GPS ICD 706 is available

Discussions are also ongoing on L5 signals on geostationary

satellites for use within SBAS

WG 2 is working on SBAS (WAAS, EGNOS…)

DO 229 C is available. Improvements are on-going

Work on DO 229 D will start to deal with definition of

requirements linked to APV operations and to include L5

related requirements.

WG 2C develops guidance for integration of GPS and INS

Current material is available as part of DO 229 Appendix R

European Commission

RTCA SC-159

WG 4 is handling all matters related to GBAS DO 245 MASPS for Cat I LAAS

DO 246 ICD for LAAS

Updates of DO 245 and 246 to ensure compliance with ICAO GBAS standards adopted by GNSSP

DO XX : MOPS for Cat I LAAS receiver

Activities recently launched to derive performance requirements for Cat II/III operations.

WG 5 is dealing with Airport Surface Operations

WG 6 is handling interference DO 235 Assessment of radio frequency interference relevant to

GNSS

Work will start in August to work on a similar assessment for the E5/L5 band

European Commission

Conclusions

ICAO standards (SARPs) developed by GNSSP are mainly

focused on Signal In Space definition and ensure safety

and Interoperability

Industry standards developed in Europe and the US are

focused on ground and airborne user equipment and are

quite detailed

MOPS are usually defining test procedures for equipment

qualification

National regulation often call these industrial standards

(TSOs or JTSOs)

Necessary in the frame of aircraft certification scheme