JMA LRIT
Mission Specific Implementation
Issue 7
1 July 2010
Issue 7 for LRIT new dismination of visible full disk in effect from 1 July 2010
Japan Meteorological Agency
1-3-4 Otemachi, Chiyoda-ku, Tokyo, Japan, 100-8122
Japan Meteorological Agency
DOCUMENT CONTROL
Issue Date Status and Changes Issue 1 1 September 1997 Original Issue
Issue 2
1 February 1998
端口速率
1) Section 4.4.2.32) Section 8.4.1 3) Section 9 4) Section A.1.2 5) Section C.1 projection name
spacecraft ID in VCDU-ID
symbol inversion in the G2 path coverage of polar-stereographic projection
communication link parameters Issue 3 1 July 1998
1) Section 5.4.32) Section 5.4.4 Key Reprentation Key Function
Issue 4 1 June 1999 1) Appendix B 2) Appendix C List of meteorological data/products Link parameters
Issue 5
1 December 2000非那根的功效与作用
1) Section 8.4.12) Section 9 3) Appendix C
spacecraft ID in VCDU-ID
No symbol inversion in the G2 path Link parameters
Delete link budget example Issue 6 1 January 2003
Shown in the table below大骨汤面
Issue 7 1 December 2009
1) Section A.12) Section A.1.1
Visible Image of Full Earth’s Disk
of normalized geostationary projection
CHANGE TRACEABILITY from Issue 5 to Issue 6
Location of change in issue 5
change Ref.
TABEL OF
小学教室CONTENTS - removing of 3.1.3 Meteorological Data
- change of ction numbering 3.1.4 to 3.1.3
- removing of 4.5.5
- Change of appendix numbering
Section 1.2
- modification of definition ‘data rate’
Section 1.3
- removing of appendix B
- Change of appendix numbering
Section 1.4.1 -change of [AD.1] rev 2.4 to rev 2.6
Section 1.6 -Update of MSG LRIT/HRIT Mission Specific Issue
1.0 to Issue 4.1
Section 2.2 -removing of Meteorological Data蓬松的反义词
Section 3.1.1 -removing of ‘Meteorological Data’
Section 3.1.3 -removing all text
Section 3.1.4 -change of Section numbering 3.1.4 to 3.1.3
Section 4.2.1 -inrtion of Number of image gment files might be
changed in future due to the timeliness requirement
Section 4.3 -removing Meteorological data
-modification of mission specific file type
-replacing of Table 4.1 LRIT File Types
Section 4.4.2.1 -removing of ‘128:meteorological data’
Section 4.4.2.3 -modification of ‘COFF/LOFF’
Section 4.4.2.5 -removing of
Section .4.4.2.9 -adding of ‘relative to COFF/LOFF (Header Type #2)’
Section 4.4.3 -refinement of File Type vs. Header Implementation
-replacing Table 4-16 U of Header Records vs. File
type
Section 4.5 -- removing of all Text
Section 8.4.1 -modification of ‘packetized data rate’
-inrtion of SC IDs MTSAT-1R and MTSAT-2
-adding of the ‘VCDU Counter’ restart from ‘zero or
Overlap’
Section 8.4.2 -adding of the ‘VCDU Counter’restart from ‘zero or
Overlap’
APPENDIX A -inrtion of Number of image gment files might be
changed in future due to the timeliness requirement
-modification of A.1.2
-adding of
APPENDIX -removing of ‘APPENDIX B’
-change of appendix numbering
APPENDIX C -change of appendix numbering C to B
-adding of Pul shaping ‘Root’
APPENDIX D -change of appendix numbering D to C
APPENDIX E -change of appendix numbering E to D
-removing of TBDs VCDU-ID
* A title of this document was changed from ‘MTSAT LRIT Mission Specific Implementation’ to ‘JMA LRIT Mission Specific Implementation’ in the Issue 5.
Japan Meteorological Agency
TABLE OF CONTENTS
TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
1. INTRODUCTION
1.1 Purpo of the Document
1.2 LRIT rvice
1.3 Document Structure
1.4 Applicable and Reference Documentation
1.4.1 Applicable Documentation
1.4.2 Reference Documentation
1.5 Conventions
1.6 Acknowledgment
2. INTRODUCTION TO THE OSI REFERENCE MODEL
2.1 Communication Concept
2.2 Dismination
3. APPLICATION LAYER
3.1 Input Data
3.1.1 General
3.1.2 Image Data
3.1.3 Service Messages
4. PRESENTATION LAYER
4.1 Structure of LRIT Files
4.2 Segmentation of LRIT Files
4.2.1 Segmentation of Image Data
4.3 Overview of LRIT File Types
4.4 LRIT File Header Types
4.4.1 General
4.4.2 Definition of Header Types
4.4.2.1 Header Type #0 - Primary Header
4.4.2.2 Header Type #1 - Image Structure
4.4.2.3 Header Type #2 - Image Navigation
4.4.2.4 Header Type #3 - Image Data Function
4.4.2.5 Header Type #4 - Annotation
4.4.2.6 Header Type #5 - Time Stamp
4.4.2.7 Header Type #6 - Ancillary Text
4.4.2.8 Header Type #7 - Key Header
4.4.2.9 Header Type #128 - Image Segment Identification
4.4.2.10 Header Type #129 - Encryption key Message Header
怎么做饭4.4.3 File Type vs. Header Implementation
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4.5 Detailed File Type Description
4.5.1 File Type #0 - Image Data
4.5.1.1 Image Data
4.5.1.2 Overlay Data
4.5.2 File Type #1 - GTS Message
4.5.3 File Type #2 - Alphanumeric Text
4.5.4 File Type #3 - Encryption Key Message
5. SESSION LAYER
5.1 General
5.2 Input to Session Layer
5.3 Compression
5.3.1 General
5.3.2 Introduction to Lossy JPEG Compression
5.3.3 Introduction to Lossless JPEG Compression
5.3.4 MTSAT Mission specific JPEG Implementation
5.3.4.1 Mission specific JPEG Structure and supported Modes
5.3.4.2 JPEG Frame Header Structure
5.3.4.3 JPEG Scan Header Structure
5.3.4.4 Structure of Table and Miscellaneous Marker Segments
5.4 Encryption
5.4.1 Encryption Principle
5.4.2 Key Definition
5.4.3 Key Reprentation
5.4.4 Key Function
5.4.5 Encryption Key Message File
5.5 Session Layer Output
6. TRANSPORT LAYER
6.1 General
6.2 Source Packetization
6.2.1 Source Packet Structure
6.3 Transport Layer Output
7. NETWORK LAYER
7.1 Input to Network Layer
7.2 General
7.3 Network Layer Processing
7.4 Output of Network Layer
8. DATA LINK LAYER
8.1 Input to Data Link Layer
8.2 General
8.3 VCLC Sub-layer Processing
8.3.1 Fill Packet Generation
8.4 VCA Sub-layer Processing
8.4.1 VCDU Asmbly
Japan Meteorological Agency
悲鸣洞穴
8.4.2 ‘Fill VCDU’ Generation
8.4.3 Reed-Solomon Coding
8.4.4 Randomization
8.4.5 Sync Marker Attachment
8.4.6 Serialization and Output of the Data Link Layer
snows怎么读
9. PHYSICAL LAYER
APPENDIX A - FILE FORTMAT OF IMAGE DATA
APPENDIX B - MTSAT LRIT SATELLITE TO GROUND INTERFACE
APPENDIX C - LIST OF ABBREVIATIONS
APPENDIX D - LIST OF TBDS AND TBCS
Japan Meteorological Agency
