X-Sympa-To: ids.analysis.forum Received: from hector.cls.fr (hector.cls.fr [62.161.32.9]) by hermes.cls.fr (8.9.3/8.9.3) with ESMTP id IAA13479 for ; Tue, 20 Feb 2007 08:47:08 GMT Received: by hector.cls.fr (Postfix) id 7297A6CED7; Tue, 20 Feb 2007 09:16:08 +0000 (GMT) Delivered-To: ids.analysis.forum@cls.fr Received: from cluster-d.mailcontrol.com (orange-103.cls.fr [62.161.32.14]) by hector.cls.fr (Postfix) with ESMTP id 074E0DE46D for ; Tue, 20 Feb 2007 09:16:08 +0000 (GMT) Received: from smtp1.ign.fr (smtp1.ign.fr [192.134.133.226]) by rly03d.srv.mailcontrol.com (MailControl) with ESMTP id l1K9G2XO013812 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 20 Feb 2007 09:16:04 GMT Received: from pop.ign.fr (pop.ign.fr [172.16.255.1]) by smtp1.ign.fr (8.13.4/8.13.4/Debian-3sarge1) with ESMTP id l1K9G19G015341 for ; Tue, 20 Feb 2007 10:16:02 +0100 Received: from [172.16.0.131] (rama.ign.fr [172.16.0.131]) by pop.ign.fr (Postfix) with ESMTP id 1119F3C4003 for ; Tue, 20 Feb 2007 10:15:59 +0100 (CET) Mime-Version: 1.0 Message-Id: Date: Tue, 20 Feb 2007 10:16:29 +0100 To: ids.analysis.forum@cls.fr From: "H.Fagard" Subject: DORIS ground marks survey tie Content-Type: text/plain; charset="iso-8859-1" ; format="flowed" Content-Transfer-Encoding: 8bit X-Mailcontrol-Inbound: 4wnd!s!p9LR4o+QFvM6fko6PYHaLGMlP X-Spam-Score: -2.9 X-Scanned-By: MailControl A-07-06-85 (www.mailcontrol.com) on 10.68.0.113 X-Validation-by: laurent.soudarin@cls.fr Dear colleagues, For most (but not all) DORIS stations, the site log gives the XYZ tie between the current antenna reference point, and the ground mark (if any) below the antenna. As far as I know, this information is used only internally at IGN: this is a benchmark we use to monitor changes of the antenna centring, be they accidental (skew due to the corrosion of the support, break) or intentional (antenna change). I don't think the analysis centres use it, nor does the IERS when combining multi-technique solutions. Would you mind if this information is no longer published in the site logs in the future? Best regards, Hervé Cliquez sur l'url suivante https://www.mailcontrol.com/sr/ByQeOf+OX8LMSPeHZZnrxyEkMuKvcwD0cN6N8AvcJ8YeZ5sNiB4TgFiybvk0iE5MCOPWQ8hzDKoDzCx9SidgDM3YMaDFw6Y3WqttcxfBMUV4fPG8sM7!wjzKoPQpr0xCj6lmjFFC9eB77Wy3mPY7l9RgPZXfSiEYTPdj8MMW06MUlzosWDWeQvVx9bxjcUbMoFjN9XZTJDjBO6A99jEC8kgJ3lWxm5Cl si ce message est indésirable (pourriel).