Unprocessed MSS data which is recorded on HDT-RM (a 28 track, high density tape) and on HDT-GM (a 14 track, nonbias recorded, high density tape) are inputs for the LANDSAT 4 data management system. All MSS data initially recorded on HDT-GM are copied to HDT-RM prior to processing. This specification establishes the requirements for the format of the LANDSAT D HDT-RM/HDT-GM

Andersen, K. E.

English

NASA Technical Reports Server

GES 10075
E83"10273
LANDS AT D
DATA FORMAT CONTROL BOOK
(E83-10278) LANDSATrD DATA FOHHAT CONTROL
BOOK. VOLUME 6, APPENDIX R: UNPROCESSED
HOLTISPECTRAL SCANNER HIGH DENSITY TAPE
(HDT-RB/HDT-GH) (General Electric Co.) 15 p
HC A02/BF AOI ( CSCL 05B G3/13
VOLUME VI APPENDIX K
j
I UNPROCESSED
N83-261U5
Onclas
00278
MUl ISPECTRAL SCANNER HIGH DENSITY TAPEii
; (HDT-RM/GM)
space division
BEST AVAILABLE COPY
G C U C O A I
CONTRACT NO.
NAS 5-25300
https://ntrs.nasa.gov/search.jsp?R=19830017874 2020-03-21T02:33:07+00:00Z
CES 10075
Bevleion B
29 Scpteaber 1981
LANDSAT-D
DATA FORMAT CONTROL BOOK
VOLUME VI APPENDIX K
UNPROCESSED
KULTISPECTRAL SCANNER
HIGH DENSITY TAPE
(HDT-RM/HDT-CM)
PREPARED FOR
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
CODDARD SPACE FLIGHT CENTER
1
CREENBELT. MARYLAND
UNDER
CONTRACT NO. NAS5-25300
PREPARED BY
GENERAL ELECTRIC COMPANY
SPACE SYSTEMS DIVISION
LANHAM, MARYLAND
CES 10075
CES 10075
Deviaion B
29 September 1981
LANDSAT-D
DATA FORMAT CONTROL BOOK
VOLUME VI APPENDIX K
UNPROCESSED
MULTISPECTRAL SCANNER
HIGH DENSITY TAPE
(HDT-RM/HDT-GM)
PREPARED BY:
K. Andersen, Systems Analyst Engineer
APPROVED BY:
T. Aepll, Manager, LSD System Engineering
APPROVED BY:
R. Katuckv, Landsat-D Progpram Manager
ISSUED BY:
PRINT CONTROL and REPRODUCTION
LSD-L/L-WPC-132
11
CES 10075
Revision B
29 September 1981
REVISION LOG
This log identifies chose portions of this document which have been revised
since original issue. Revised portions of each page, for the current revisiot.
only, are identified by marginal atriplng.
Revision Page No.j Para. No. Affected Rev. Date
A 3-1
A 3-2
i
Figure 3.1-1
2 September 1980
2 September 1980
Incorporates AN-01
Bit
ii
it
"
ii
Cu
1-1
1-2
3-1
3-2
3-3
4-1
Incorporates A
rrent responsible person: J, Dietz
1.2, 1.3, 1.4
!3.1.1. 3.1.2,
! Figure 3.1-1
;3.1.3, 3.1.4, 3.3
Section 4
M-02 & 03 | / ~\<fll DO £ P
29 September 1981ii
it
ii
it
it
/V». /?. ?\
CES 10075
ili
CES 10075
Revision B
29 September 1901
TABLE 07 CONTENTS
SECTION PACE
^
1 SCOPE
1.1 Introduction 1-1
1.2 Purpose 1-2
1.3 Applicability 1-2
1.4 Data Processing ' ' 1-2
2 APPLICABLE DOCUMENTS
2.1 Government Docuaento 2-1
2.2 General Electric Company Docuxrents 2-1
2.3 Other Documents 2-1
3 FORMATS
3.1 Tape Format 3-1
3.1.1 Recorded-data Foraats 3-1
3.1.2 Gaps and Spacing 3-1
3.1.3 Tine Code Information 3-3
3.1.4 Tape Reel Capacity 3-3
3.2 Image Data Format 3-3
3.3 Time Code Foraat 3-3
4 ABBREVIATIONS, ACRONYMS, SYMBOLS AND TERMS
CES 10075
iv
CBS 10075
Bcvlalon B
| « S«pt«aber 1981
LIST OP ILLUSTRATIONS
FIGURE PAGE
3.1-1 HDT-RM/HDT-CM Tape Layout 3-2
CES 10075
; CES 10075
; Bevision B
29 September 1981
I
i SECTION 1
i SCOPE
1.1 INTRODUCTION
The NASA CSFC Landsat-D Project is developing a Data Management System (DMS) toi
provide a variety)of standard Image product* from the thematic mapper (TM) and|
eultispectral acanncr (MSS) instruments. The major digital Image processing
functions to be performed by the DMS for Landsat-D include: screening imagery
i
for quality, determining cloud cover, applying radiometric and geometric
1
 \
corrections (including resampling the data in either cubic convolution or
j i
neareot neighbor techniques and'presenting the data in either a epace oblique
•creator, universal transverse mercator, or polar stereographlc projection),
I >
and copying original archive output trpes for distribution. Inputs to the DMS
will Include unprocessed MSS data which ic recorded on HDT-RM or HDT-GM tapes.
r i
An HDT-RM is a 28-track, high density tape and an HDT-GM is a 14-track, non-bias
recorded, high density tape, both of which conform to the ANSI standard for high
I i
density digital tape recording.'
i
This specification establishes the requirements for the format of the Landsat-D
i
HDT-RM/HDT-GM. These requirements represent both derived and allocated
requirements from
CSPO-430-D-100C.
lequirements for
"Products' (S7S 101
the GSPC i Specification for the Landsat-D System,
this appendix to Data Format Control Book, Volume VI,
i
27) are allocated or derived from the GSFC Specification for
the Landsat-D System (GSFC-4304D-100).
GES 10075
1-1
CES 10075
Bevlsion B
29 September 1981
1.2 PURPOSE
The purpose of thio document is to define the format of the input HDTs which
contain unprocessed MSS image data*
This document and those cited in Section 2 provide the complete data format
specifications for HDT-RM and HDT-GM.
1.3 APPLICABILITY
This document applies Co all Landsat-D unprocessed MSS data tapes recorded by
either the DMS, the Domeat Interface Facility (DIP), or by any other receiving
ground station designated to interface directly with the CS during data
acquisition or relay operations.
1.4 DATA PROCESSING
HDT-RM tapes are the unprocessed data input to the MSS Image Processing System.
All MSS data initially recorded on HDT-GM is copied to HDT-RM prior to data
processing.
GES 10075
X-2
SECTION 2
r APPLICABLE DOCUMENTS
2.1 GOVERNMENT DOCUMENTS
None
2.2 GENERAL ELECTRIC COMPANY DOCUMENTS
«. SVS 10126
Data Format Control Book Volwae V, Psylotd
b. SVS 10127
Data Format Control Book Voluae VI, Products
2.3 OTHER DOCUMENTS
None
GES 10075
Revision B
29 September 1991
CES 10075
2-1
CZS 10073
Revision B
29 Septeaber 1981
SECTION 3
FORMATS
3.1 TAPE FORMAT
3.1.1 RECORDED-DATA;FORMATSj -
' t •
Unprocessed MSS data:and IRIG-A time code data will be recorded on HDT-RM/HDT-GHl
i " -." .., — - I
tapes through the {operations of a Martin—Honeywell high density digital tapef
I
recorder. HDT-RM are!recorded on a 28-track model no. 2879-L and HDT-GM are{
I !
recorded on a 14-track Model no. 1479-L or on 14-track recorders that are fully|
i ; I
compatible with the 1479-L. The recorder tape format (i.e., track assignments,
packing density, and recorder framing, randomizing, and error correction I
capability format specifications) are defined in Data Format Control Book Volume
VI: Products.
3.1.2 CAPS AND SPACING
Image data will be recorded on HDT-RM/HDT-GM tapes in segments which correspond
i
to periods of MSS transmission from Landsat. As illustrated in Figure 3.1-1
! i
each RDT-RM/HDT-GM contains, typically, from one to five unprocessed MSS data
I i
segment. The data 'gaps are created by HDDR control between data segments. The
I i
gap footage corresponds to the HDDR start/stop and the time required to exercise
•ither manual or computer control of the HDDR. Gap footage will vary from the
allowable minimum of five feet for HDT-RM or 19 feet for HDT-GM to a typical
maxima of 300 feet for HDT-RM or 1000 feet for HDT-GM. The minimum allowable
footage is a constraint of the MSS Image Processing System.
GES 10075
3-1
ORIGINAL PAGE IS
OF POOR QUALITY
NOMINAL
300 FEET OF
UNUSED TAPE
UNPROCESSED
MSS DATA
&ATA GAP
UNPROCESSED
MSS DATA
DATA GAP
UNPROCESSED
MSS DATA
DATA GAP
NOMINAL
300 FEET OF
UNUSED
TAPE
CES 10075
Revision D
29 Scpteaber 1981
Figure 3.1-1. HDT-RM/HDT-GM Tape Layout
3-2
ORIGINAL PAGE IS
OF POOR QUALITY
29 September 1981
I
A length,(300 feet nominal) of unused tape will be provided «t Che beginning and
end of„each HDT-RM/HDT-GM tape reel for tape handling use.
•
3.1.3 TIME CODE INFORMATION
Time code data uill be recorded continuously on HDT-RM from the beginning of the
first loage . data .segment to the ..end of the last image data segment (i.e.,
contiguous across all-gaps between image data segments). Time code data will
not normally be provided through the tape handling sections at the beginning and
end of each reel.
2.1.4 TAPE REEL CAPACITY
The amount of image data recorded on any HDT-RM/HDT-GM tape vill vary according
to the number of segments in which the data is grouped. No more than 205
Landsat scenes may be recorded on any one HDT-RM tape, or 51 on any one HDT-GM,
respecting subsequent processing constraints.
•)
3.2 IMAGE DATA FORMAT
Unprocessed MSS data for each data segment will be provided to and from the HDT
recorder In the censor output data format defined in Data Format Control Book
Volume V: Payload.
3.3 TIME CODE FORMAT
The reference time code data will be recorded in IRIG-A format on each HDT-RM
tape to Indicate the time at which the tape was recorded, and to serve as an
index mechanism for locating specific imagi data. Time code will be recorded at
• data rate corresponding to MSS data being recorded at real-time (i.e., a 15.06
GES 10073
3-3
i
r
ORIGINAL PACE IS
OF POOR QUALITY CES 10075
Ra«?. ion E
29 September 1981
MHz MSS. data playback will result in t\ 10 KHz time code playback). Details of
i
this t^me code data format are provided in Data Format Control Book Volume VI:i
Products. '
GES 10075
3-4
.ANSI
DNS
CS
CSFC
HDDR
HDT
HOT-CM
HDT-RM
IRIG
MSS
TM
PAGE tt»
POOR QUALITY CES 10075
Revision B
29 Septeater 1981
SECTION A
ABBREVIATIONS, ACRONYMS. SYMBOLS AND TERMS
American National Standards Institute
Data ManagenenVSyBten _ -
Ground Segoent
Goddard Space Flight Center
High Density Digital Recorder
High Density Digital Tape
14-Track Unprocessed Multispectral Scanner HDT
28-Track Unprocessed Multispectral Scannei FDT
Inter-Range Instrumentation Group
Multispectral Scanner
Thematic Mapper
GES 10075
A.I


LANDSAT-D data format control book. Volume 6, appendix K: Unprocessed multispectral scanner high density tape (HDT-RM/HDT-GM)

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