The DOCUMENT collection contains documentation to help the user understand and
use the GRAIL archive data. Most documents have been converted to PDF/A-1b
format from the original PDS3 copies. All documents have associated PDS4 labels
that have the extension *.xml. Four documents as noted below are copies from the
general radio science documentation bundle (PDS4 logical identifier:
urn:nasa:pds:radiosci.documentation and DOI: 10.17189/1519397)

It is recommended that the user begin with the Data Product SIS (dpsis.pdf) for
an overview of all the products. For the archived gravity fields, one should
see the SHADR, SHBDR, and RSDMAP Software Interface Specifications.
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archsis.pdf: The PDS3 Archive Volume SIS.

dpsis.pdf: The Data Product SIS.

090_revc_1.pdf: 0172 Telecomm 090 Rev C.

dsn_0159-science.2001-02-28.pdf: 0159 Science Radio Science Receiver Standard Formatted 
Data Unit. Copied from the general radio science documentation bundle.

0161_telecomm_l5_8.pdf: 0161-Telecomm Telemetry Standard Formatted Data Unit 
(SFDU) Interfacet.

0171_telecomm_njpl_l5.pdf: 0171-Telecomm-NJPL JPL created SFDU structures.

0172_telecomm_chdo_reve_l5.txt: 0172-Telecomm-CHDO DSN Created CHDO 
Structures.

atbd.pdf: GRAIL "primer" that describes the data processing flow from EDR to 
CDR as currently implemented by the GRAIL Team. 

blackjackdlp.pdf: BlackJack Data Link Protocol Interface and Implementation 
Description.

dsn006_medialcal_rev2.pdf: TRK-2-23 Media Calibration Interface.

fortnight_calculation.pdf: Supporting document for 
once_upon_a_fortnight.pdf, JPL D-61501, containing the numerical content 
described therein, as a PDF file. 

gpa_td_d_71987_reve.pdf:  GRAIL Telemetry Dictionary. 

grail_timing.pdf: Timing of Science Data for the GRAIL Mission. 

lib_10_grail_coord_trans_rev1.pdf: ACS Hardware Coordinate Frame Definitions 
and Transformations.

dsn_trk-2-18.2000-06-15.pdf: TRK-2-18 Orbit Data File Interface. Copied from the
general radio science documentation bundle.

once_upon_a_fortnight.pdf: GRAIL Time Transfer Assembly Algorithm document. 

rsdmap.pdf: Software Interface Specification - Radio Science Digital Map 
(RSDMAP) Products.

shadr.pdf: Software Interface Specification - Spherical Harmonics ASCII Data 
Record.

shbdr.pdf: Software Interface Specification - Spherical Harmonics Binary 
Data Record.

dsn_trk-2-24.2006-03-15.pdf: TRK-2-24 DSN Tracking system Interfaces Weather
Data Interface. Copied from the general radio science documentation bundle.

dsn_trk-2-34.2008-02-29.pdf: TRK-2-34 DSN Tracking System Data Archival Format.
Copied from the general radio science documentation bundle.

trackingdatamessagestandard.txt: Tracking Data Message Recommended Standard.

trk_2_21_950831.txt: TRK-2-21 DSN Tracking System Earth Orientation 
Parameter Data Interface.

The SIS below references SPICE kernels described by SPICE system 
documentation and accessed using SPICE toolkit APIs available at the NAIF 
node of the PDS:

spk_mm_sis.pdf: SPICE Spacecraft and Planet Ephemeris Kernel (SPK) SIS.