IGS Infrastructure Status 2014 - PY06 - Romero - 2373 - IGS... · IGS Infrastructure Status, N. Romero, IGS Workshop, Pasadena, CA, USA, 2014 ... tro1 urum usn3usno uzhl vndp wes2

IGS Infrastructure Status, N. Romero, IGS Workshop, Pasadena, CA, USA, 2014

IGS Infrastructure Status Nacho Romero IGS Infrastructure Committee Chairman Navigation Support Office, ESA/ESOC IGS Workshop, Pasadena, CA, USA. 24/06/2014


•  20 years of IGS Infrastructure … •  Reference Frame station progress

•  Current Challenges

•  Infrastructure moving forward

•  Conclusions

Overview


400+ stations

40+ receiver types

~99 antenna+radome types

100+ organizations

IGS Network

60+ stations in long term outage IGS CB


•  Infrastructure encompasses all the underpinnings that make the IGS … stations, data formats, data centers, etc.

•  We have come a long way in 20 years … big increase of reference stations … the most important stations of all

20 years of IGS Infrastructure …

Network Distribution_44 − wk0731

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albh algo

brmu

brus

cro1

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fair

fort

godegold

graz

harv

holb joze

jplm

kiru

kokb

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madr mate

mdo1

mets

nlib

onsa

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pie1quin

sant

sio3

stjo

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tidb

trom

tskbusudvndp

wes2wett

will

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N/A% OK1 station depth, 0 deg cutoff

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Network Distribution_136 − wk1794 ITR

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albh algo

alic

amc2 ankr

artu

auck

bake

barhbjfs

bor1brew

brft

brstbucu

cedu

chti

chum

chur

coco

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cro1

darw

drag

drao duboflin

glps

glsv

godegold

grasgraz

guam

harb

hersherthlfx

hnlc

hob2

hrao

iisc

invk

irkj

ispa

ista

joz2joze

jplm

karr

kely

kerg

kokb

kouc

lhaz

lroc

mac1

mana

mar6

mat1mate

mauimcil

mdvj

medi

mkea

mobs

morpnain

nano

nklg

not1

nrc1

nril

nrmd

nvsk

ohi2

onsa

palm

parc

pdelpie1

pimo

pol2

prds

qaq1

quin

ramo

rbay

reso

reun

riga

scor

sofi

ssia

stjo

suth

tah1

tcms

thti

tidb

tixi

tlse

tnml

tow2

tro1

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uzhl

vndp

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will wsrtwtzr

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yell

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N/A% OK1 station depth, 0 deg cutoff

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1994 2014


•  The position for the ITRF stations enable the orbits to disseminate the ITRF worldwide.. Having enough stable stations is critical …

Reference Frame Station progress…

AC Station usage

ITRF available weekly station position sln http://webigs.ign.fr/en/tfcc/


What we face

IGS Sta'on Network Need strong management from NC with IC, AC, MGEX, etc help.

IGS projects/experiments Need dedicated networks to be accepted to IGS ntwrk. IGS “Ntwk of Ntwks” NC/IC need to idenAfy more regional bodies with good acAve staAons to underpin all IGS efforts; SIRGAS, EUREF, AFREF,

IGS MGEX New Signal and Format Needs, Global + Regional

IGS RT Speed, RTCM, Global

IGS RF Stable long term Time Series, Global

Overall Challenge


Challenges

•  GLONASS ephemerides “time of applicability” problem; April, 2014

•  Due to heterogeneity and depth of IGS network no effect on products but several receivers stopped tracking GLO or showed problems…

Effect of GLONASS outage on GNSS receivers, Berglund et al, poster, session PS08


Challenges

NGA upgraded equipment to unknown ITT receivers/antennas, we have identified the equipment into rcvr_ant.tab, added calibration

from NGS to ANTEX but data has ½ phase cycle ambiguity, and most stations moved the antennas, NGA data continues to be out.

NGA added its stations for the repro1 effort, they consist of 22 double stations at 11 sites – stations have been out since ‘09


Challenges

Uncalibrated radomes are a significant problem at co-located sites, where their ITRF08 tie discrepancies reached 99 mm!!

Global processing solutions could not determine most radome effects (2/30), short baseline processing may be tried.


Moving Forward …

•  IGS Site Log Manager Tool to manage the station configurations …

IGS CB Site Log Manager Tool, Maggert et al, poster session PS08

SLM Demonstration, D. Maggert, Infra Splinter Mtg, Wed 25 Jun 16:00, Room 101 (Lees-Kubota Lecture Hall)


Moving Forward …

•  NavBits to store the navigation bits for open loop GNSS signal processing from many IGS stations …

Providing NBS for LEO occulattion processing, Romero et al, poster session PS08


Thank You!Please contact the IC with questions and concerns through one of its members or me: [email protected] Also contact the NC at: [email protected]

Infrastructure Splinter Mtg – Room 101 (Lees-Kubota Lecture Hall - Wed 16:00 – 17:30

Documents

IGS Infrastructure Status 2014 - PY06 - Romero - 2373 - IGS... · IGS Infrastructure Status, N. Romero, IGS Workshop, Pasadena, CA, USA, 2014 ... tro1 urum usn3usno uzhl vndp wes2