Korea Aerospace Research Institute

Sangeun Yun

EGNOS Workshop, Rome, Italy

24th Sep. 2019

Goal and Period of KASS Program

1

2

[Period] 5 Phases in 8 Years (2014 - 2022)

• Phase A (Oct. 2014-Jun. 2015): System Definition

• Phase B (Jul. 2015-Mar. 2017): System Design

• Phase C (Apr. 2017-Mar. 2019): Critical Design

• Phase D (Apr. 2019-Jun. 2020): Integration and Verification

• Phase E (Jul. 2020-Oct. 2022): Initial Operation and Approval Process

[Program Participants]

• Supervising Agency (MOLIT, KAIA), KASS Program Office, KARI, ETRI, TASF, KT, Ktsat

2

Organizational Structure related with KASS

Inspection Organization

(KIAST, TTA)

KPO GNSS center(KSP) Not established yet

International Co-development

Contract

MOLIT: Ministry of Land, Infrastructure, and Transport IO : Inspection Organization (KIAST, TTA) KPO: KASS Program Office, KARI KSP: KASS Service Provider ESSP : European Satellite Services Provider EASA: European Aviation Safety Agency

KASS Handover

KASS development

EASA

System Qualification

MOLIT

KASS operation

consulting

Private Company (like ESSP)

Designate

Domestic Co-development

KASS Program

3

KASS System Architecture

S/S (Sub System)

Qty. (Baseli

ne)

KRS (KASS Reference

Station)

7

GEO satellite 2

KUS (KASS Uplink

Station)

3

KCS (KASS Control

Station)

2

KPS (KASS Processing

Station)

2

KUS 1 (Master)

KUS 3 (Master)

KRS Channel 2(B)

KRS Channel 1(A) KCS(Master)

KCS(Backup)

KPS 1

KPS 2

GEO 1

GEO 2

GPS satellites

7 KRS Sites

L1 L2 L5

L band

L1 /L2

SBAS Message

GEO

SBAS Message

GEO

L1 /L2

L1 /L2

L1 /L2

KUS 2 (Backup)

L band C band

C band

L band

C band

L band

4

Sites and Satellites for KASS system

: KRS

: KCS & KPS

: KUS

: GEO satellite

Legend

The survey was conducted for about 2 years in order to select the best sites.

(KRS : 60 locations → 7 locations, KUS : 14 locations → 2 locations)

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GEO and SBAS payload Acquisition Status

`18 `19 `20 `21 `22 `23 `24 `25 `26

Acquisition (lease) Plan

1st GEO

2nd GEO

SoL (Oct., 2022)

3Q, 2021

ktsat-Airbus

Korean GEO (Not

Confirmed)

For Test and Open Service(KPO) For SoL Service(MOLIT)

6

OS (2Q, 2022)

PRN code acquisition

※ SMC/GP (Space and Missile system Center / Global Positioning systems directorate)

SMC/GP has assigned the PRN code (134) to KASS for use on L1 C/A & L5

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IPKP - Open Service Performance

Assessed availability performance is more than 99%

Availability, HNSE and VNSE are calculated applying failure ratio of GPS, GEO and Ground

segment(KR, KPS, KUS and Data Networks).

※ LM (Land Mass) : South Korea Peninsula + Jeju Island

1.57 m 1.64 m

※ KASS APVI 99% availability Region

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Republic of Korea’s SBAS Concept

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Organizational Structure of KASS Operation

• System Operation

(24hours – 7days) • 1st Level

Maintenance • ILS Management

• KASS O&M, Engineering System Management

• Certification Management

• KASS Service Improvement and Developing New Service

• Performance Monitoring and Analysis

• 2nd Level Maintenance

• KASS Improvement

• Developing next step SBAS

• KASS Operation Management

• SLA management • NOTAM , System

Inspection

• GNSS Service Provision

• Signing of SLA and cooperation with related organizations

• International cooperation

GNSS Center

(MOLIT]

Dept. of KASS

Operation

Dept. of GNSS Policy

Planning

KASS Operation Office Head

(Delegated Private Company)

KASS Service Management

Team

KASS O&M Team

KASS SoL Engineerin

g Team

Government Section

Private company Section

KSP(KASS Service Provider) organization chart - Draft

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Future Plan

MOLIT will perform system and operation certification (commission) in 2022

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 ~

Operation (GNSS Center with Private Company)

Development (KPO)

Certification (MOLIT)

System Design System IVQ

System Operation Support

Establishing KASS Service Provider

SQR (Oct., 2022)

1st GEO (3Q, 2021)

System Certification

Modify Regulation for Operation Approval

Operation Approval

SoL Service

Provision

SoL Initial Operation

System Design Verification (Safety Case A Review)

Open Service Provision(GEO)

Develop Safety-related Work Procedures and Tools

(Safety Case B)

Develop/Implement SBAS Procedures

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Back-up Slide

KASS Operation Approval(Designating Operation Company) - Draft

System(Design) Certification

Designate of Operation Company

By Inspecting Safety Case B

(EC Regulation 1035, 552, 482, etc)

Safety Case A Take Over From

KPO

Operation Approval

Safety Case A submission

Complete

Safety Case A

KPO

Performance

Inspection

(ICAO ANNEX 10, DO-178B)

Inspection Organization

Private company (Applicant for KASS Operation)

Safety Case B Take Over From

Private Company

Complete

Safety Case B

Safety Case B submission

Safety Case A Handover

GNSS Center(MOLIT)

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