CDDIS | FTP Structure for DORIS Data and Product Files

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The CDDIS is an archive for the International DORIS Service (IDS) and provides ftp access to:

DORIS metadata (information required to process the data)
DORIS data for all IDS satellites or for some specific campaign
DORIS results (for geodesy, geophysics or orbit determination)

The ftp archive of DORIS data, products, and general information on the CDDIS has the following structure. The values listed in red are substitution codes within the directories and filenames defined in Table 2 below. Many DORIS data and product files archived at the CDDIS are stored in UNIX compress format and end in a .Z. Software to uncompress these files can be found at http://www.gzip.org.

This information on the DORIS ftp structure at the CDDIS is divided into several tables:

Table 1: FTP structure for DORIS data, products, and general information
Table 2: Substitution codes for directories and filenames
Table 3: Examples

Table 1. CDDIS FTP Structure for DORIS Data, Products, and General Information

/pub	/doris	/data	doris.yyyy				DORIS data holdings summaries
			/sat	sat.files satdataccc.vvv.Z			DORIS data holdings summary DORIS data files
			/sat	/sum	satdataccc.vvv.sum		DORIS data summary files
		/campdata					DORIS campaign data
		/rawdata					DORIS raw data
		/products	/yyyycampaign	/centu	cenyydddtuvv.snx.Z		DORIS campaign product files
			/eop	cenyytuvv.eop.Z			DORIS EOP product files
			/geoc	cenyytuvv.geoc.Z			DORIS geocenter product files
			/iono	/cen	/sat	censatvv.yyddd.iono.Z	DORIS ionosphere product files
			/orbits	/cen	/sat	censatvv.byyddd.eyyeee.sp1.Z	DORIS orbit files
			/sinex_global	cenyyuvv.snx.Z			DORIS global SINEX files
			/sinex_series	/centu	cenyydddtuvv.snx.Z		DORIS sinex series files
			/stcd	/cenyytu	cenyytuvv.stcd.monu.Z		DORIS station coordinate time series
		/cb_mirror	/centers	ac.acn			DORIS analysis center descriptions
			/data	data.fmt			Format documents for DORIS data
			/dorismail	dorismail####			DORISMail messages
			/products	prod.fmt			Format documents for DORIS products
			/satellites	satatt.txt satcalend.rtf satman.txt satmass.txt satmod.txt			Satellite attitude files Calendar of satellite events Satellite maneuver histories Satellite center of mass information Macromodel for satellite
			/stations				DORIS network information
	MORE						Other data

Table 2. Substitution Codes for Directories and Filenames

Code	Description	Range	Example
yy	2-digit year	76-present	05
mm	2-digit month of year	01-12	01
dd	2-digit day of month	01-31	01
sat	satellite code	en1=Envisat ja1=Jason-1 sp2=SPOT-2 sp3=SPOT-3 sp4=SPOT-4 sp5=SPOT-5 top=TOPEX/Poseidon	en1
ccc	3-digit cycle/arc number	000-999	132
vvv	3-digit data version number	000-999	001
monu	4-digit station code	Full list	adea
yyyy	4-digit year	2002-present	2005
yy	2-digit year	76-present	05
mm	2-digit month of year	01-12	01
dd	2-digit day of month	01-31	01
ac	analysis center acronym	N/A	ign-jpl
cen	analysis center code	cls=Collecte Localisation par Satellite, France csr=Center for Space Research, USA grg=CNES/GRGS, France iaa=Institute for Applied Astronomy, Russia ign=Institute Geographique National/JPL, France/USA ina=INASAN, Russia lca=LEGOS-CLS, France sod=CNES/Service d'Orbitographie DORIS, France ssa=SSALTO, France	ign
t	type of solution	d=daily w=weekly m=monthly y=yearly	w
u	type of data	d=DORIS only c=multitechnique	d
data	data type	N/A	doris10
prod	product type	N/A	snx
####	mail message number	0001-9999	0001

Table 3. Examples

DORIS Data/Product Type	Location of Example File in CDDIS ftp Archive
DORIS data from Envisat for cycle 132 (01/01/2005-01/10/2005)	ftp://cddis.gsfc.nasa.gov/pub/doris/data/en1/en1data132.001.Z
Weekly DORIS EOP solution from IGN for 2003	ftp://cddis.gsfc.nasa.gov/pub/doris/products/eop/ign03wd01.eop.Z
Weekly DORIS geocenter solution from IGN for 2003	ftp://cddis.gsfc.nasa.gov/pub/doris/products/geoc/ign03wd01.geoc.Z
SSA's daily DORIS ionosphere product from Jason for 01/01/2005	ftp://cddis.gsfc.nasa.gov/pub/doris/products/iono/ssa/ja1/ssaja101.05001.iono.Z
LCA's Jason orbit file from DORIS data for 03/06-07/2002	ftp://cddis.gsfc.nasa.gov/pub/doris/products/orbits/lca/ja1/lcaja101.b02065.e02066.sp1.001.Z
Global DORIS SINEX solution from IGN for 2004	ftp://cddis.gsfc.nasa.gov/pub/doris/products/sinex_global/ign/ign04d02.snx.Z
Weekly DORIS SINEX series from IGN for 01/01/2005	ftp://cddis.gsfc.nasa.gov/pub/doris/products/sinex_series/ignwd/ign05001wd04.snx.Z
Weekly DORIS station coordinate time series from IGN for station ADEB in 2003	ftp://cddis.gsfc.nasa.gov/pub/doris/products/stcd/ign03wd01/ign03wd01.stcd.adeb.Z

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Author: Carey E. Noll
Responsible NASA Official: Ed Grayzeck
Last Updated: May 27, 2005