boundary="----=_NextPart_000_0060_01CB1D24.E40FF3F0" ****************************************************************************** dorismail 06-Jul-2010 14:04:26 Message No 0679 ****************************************************************************** Author: "Jerome SAUNIER" Subject: Network/ station renovation at Ascension This is a multi-part message in MIME format. ------=_NextPart_000_0060_01CB1D24.E40FF3F0 #### BEGIN HEADER #### DORISMail version 1.1 Subject: No 0679 : Network/ new point ASCENSION #### END HEADER #### =20 Dear colleagues, =20 The DORIS station at Ascension island, Southern Atlantic, initially installed in 1997, has been moved to a new location and completely renovated in order to reduce signal obstructions and multipath caused by two nearby satellite dishes.=20 A new monument, including a more corrosion-proof base plate, has been built, located 35 m west of the former one. =20 The former antenna was removed and transmissions had stopped at the end of June 2009 because of corrosion destroying the antenna base and connections. =20 Please find below the installation characteristics and the coordinates of the new reference point : =20 Concerned site: #### BEGIN SITE #### Site name : ASCENSION #### Site DOMES number : 30602 #### #### END SITE #### =20 Characteristics of the new point: #### BEGIN STATION #### Four character ID : ASEB #### Antenna model : Starec 52291 type #### Station DOMES number : 30602S005 #### Date installed (dd/mm/yyyy) : 14/06/2010 #### Antenna support type : Stainless steel interface #### Installed on : 1.5m high concrete reinforced pillar #### #### END STATION #### =20 The coordinates of the DORIS antenna reference point are: #### BEGIN COORDINATES #### Solution : ITRF2005 #### Note about the coordinates : #### Epoch : 2000.0 #### Unit : metre #### X : 6121154.090 #### Y : -1563976.688 #### Z : -872606.082 #### Sig X : 0.004 #### Sig Y : 0.005 #### Sig Z : 0.003 #### #### END COORDINATES #### =20 The ITRF velocities for the site are: #### BEGIN VELOCITIES #### Note about the velocities : #### Unit : metre / year #### VX : -0.0044 #### VY : -0.0132 #### VZ : 0.0109 #### Sig VX : .0011 #### Sig VY : .0014 #### Sig VZ : .0008 #### #### END VELOCITIES #### =20 =20 Best regards, =20 J=E9r=F4me SAUNIER R=E9seaux et Services Internationaux Service de G=E9od=E9sie et Nivellement Institut G=E9ographique National 2, avenue Pasteur 94 165 SAINT MANDE Cedex Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr