Index of /volume/nmeros_2003
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aareadme.txt 26-Sep-2001 00:00 12K
errata.txt 26-Sep-2001 00:00 3.0K
voldesc.cat 27-Sep-2001 00:00 4.3K [PDS catalog file]
PDS_VERSION_ID = PDS3
RECORD_TYPE = STREAM
SPACECRAFT_NAME = NEAR
OBJECT = TEXT
PUBLICATION_DATE = 2001-09-27
NOTE = "AAREADME.TXT File for data set:
NEAR-A-MAG-3-RDR-EROS/ORBIT-V1.0"
END_OBJECT = TEXT
END
NEAR Mission MAGNETOMETER Data Set
========================================================================
Introduction
============
This document provides an overview of this volume of this Near Earth
Asteroid Rendezvous (NEAR) Calibrated Data Set, including a summary
of the volume contents.
The NEAR Science Data Center (SDC) archives NEAR calibrated science
data to the Small Bodies Node (SBN) of the Planetary Data System (PDS),
as specified in the NEAR Project Archive Generation, Validation and
Transfer Plan (February 1998).
NEAR data sets contain data from only one instrument and one mission phase.
Mission phases for data sets are defined in the table below. Each data
set contains the data from a range of days and all supporting directories.
The data sets may span multiple volumes. The GEOMETRY data containing the
SPICE ephemerides, attitude and other files are delivered in a separate
data set.
This data set is a part of the NEAR level 2 data set delivery as
described by the NEAR PDS Data Archive Plan. The Plan also describes the
higher level data products, which will become separate PDS data sets.
Volume Format
=============
This volume has been formatted according to the ISO-9660 level 2
Interchange Standard.
This volume does not contain any Extended Attribute Records (XAR).
Thus, some VAX/VMS users may have problems accessing files on this
volume.
File Formats
============
All text documents and other meta information files such as
descriptions, PDS object definitions and detached PDS labels have a
carriage return (ASCII 13) and a line feed character (ASCII 10) at the end
of the record. This allows the files to be read by MS-DOS/Windows, Unix,
and VMS operating systems. All of the data files are provided as ASCII
tables.
Volume Contents
===============
Files on this volume are organized into a set of subdirectories
below the top-level directory. The following table shows the
structure of these directories. See the *INFO.TXT files in each directory
in each directory for specific information on the files in the directory.
Volume directory structure:
|-AAREADME.TXT The text version of the AAREADME file.
|-ERRATA.TXT Text information describing data errors/anomalies.
|-VOLDESC.CAT Description of the contents of this volume.
|-BROWSE---
|-CATALOG--
|-DATA-----
|
|-DOCUMENT-|-MAG_SW-
|
|-GEOMETRY-
|-INDEX----
Directory Name Description
-----------------------------
CATALOG Templates for the mission, instrument host, instrument,
and data set.
BROWSE The BROWSE directory has a structure identical to the data
directories on this CD, where each contains plots of NEAR MAG
data in NEAR Sun Orbital (NSO)and Eros Body Fixed (EBF)
coordinate systems.
DATA The data are processed scientific data provided in physical
units using the two coordinate systems Near Sun Orbital (NSO)
and Eros Body Fixed (EBF). Magnetic field data are provided
in plot and ASCII table formats, with ASCII data also
providing spacecraft position. In addition to the data
files, documentation is available on the calibration and
data processing techniques. This data set is archived as a
set of CDROM images.
DOCUMENT The DOCUMENT directory contains the magnetometer calibration
document, a mission overview and a subdirectory containing some
magnetometer software used to process the data. The calibration
document is available in ASCII, Microsoft Word and rich text
formats. The mission overview is available in ASCII and Adobe
PDF format. The software subdirectory contains two
documents: the first is a colletion of software used by the
NEAR Science Data Center and the second is a collection of
software used to produce the science data files.
GEOMETRY This directory contains only a GEOMINFO.TXT file.
A separate GEOMETRY volume contains all of the SPICE kernels in
text transfer format for the mission phase and the supporting
the supporting documentation.
INDEX INDEX TABLES for this CD and the volume set describing times and
key data file parameter values.
Mission Phase Parameters
----------------------------------------------------------------------
Phase Name Segment Start Year, End Year, Length (days)
(Phase Day of Year Day of Year
Abbrv)
----------------------------------------------------------------------
CRUISE1 CRU1 1996051 1997175 491
MATHILDE MATH 1997176 1997178 3
CRUISE2 CRU2 1997179 1998022 209
EARTH ERTH 1998023 1998026 4
CRUISE3 CRU3 1998027 1998356 330
EROS/FLY/BY ERFB 1998357 1998357 1
CRUISE4 CRU4 1998358 2000010 383
EROS/ORBIT EROS 2000011 2001043 399
EROS/SURFACE ERSF 2001044 2001059 16
-------------------------------------------------------
Whom to Contact for Information
===============================
NEAR Science Data Center
Kazue Takahashi
The Johns Hopkins University
Applied Physics Laboratory
11100 Johns Hopkins Road
Laurel MD 20723
Email: kazue.takahashi@jhuapl.edu