LEO Satellite Time Synchronization Architecture

• 발행기관: 한국항해항만학회
• 저자명: Ki-Ho Kwon Day-Young Kim Jong-In Lee Hak-Jung Kim Sang-Jeong Lee
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2006년도 International Symposium on GPS/GNSS Vol.1, 1~4쪽, 전체 4쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2006.10.24

영문 초록

A GPS-based time synchronization technique employing a refined HW circuitry and SW algorithm is considered as fine time-management system for Low Earth Orbit (LEO) remote sensing satellites. By synchronizing the On-Board Time (OBT) within satellites to the GPS 1PPS, a very expensive, highly accurate on-board clock is not required to determine the precise on-board time management. Also, the satellite command generation in ground stations and post- processing of earth observation data which a particular image is acquired. This paper analyses on-orbit verification of the existing satellite time sync architecture and presents a new time sync architecture, operation and relation between the OBT and the GPS time.

목차

1. Introduction

2. Existing Time Sync Architecture

3. Proposed Time Sync Architecture

4. Conclus

키워드

LEO remote sensing satellite GPS 1PPS time synchronization On-Board Time (OBT)