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 PAA29513 for ; Tue, 20 Feb 2007 15:47:43 GMT Received: by hector.cls.fr (Postfix) id D76017C73; Tue, 20 Feb 2007 16:16:43 +0000 (GMT) Delivered-To: ids.analysis.forum@cls.fr Received: from cluster-e.mailcontrol.com (orange-103.cls.fr [62.161.32.14]) by hector.cls.fr (Postfix) with ESMTP id E97F2164643 for ; Tue, 20 Feb 2007 16:16:42 +0000 (GMT) Received: from sol.csr.utexas.edu (sol.csr.utexas.edu [129.116.190.1]) by rly05e.srv.mailcontrol.com (MailControl) with ESMTP id l1KGGSVp026622 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 20 Feb 2007 16:16:32 GMT Received: from localhost (localhost.localdomain [127.0.0.1]) by sol.csr.utexas.edu (8.12.11.20060308/8.12.11) with ESMTP id l1KGGSWc029337 for ; Tue, 20 Feb 2007 10:16:28 -0600 X-Virus-Scanned: amavisd-new at csr.utexas.edu Received: from sol.csr.utexas.edu ([127.0.0.1]) by localhost (sol.csr.utexas.edu [127.0.0.1]) (amavisd-new, port 10024) with LMTP id jZh8cZsjerMl for ; Tue, 20 Feb 2007 10:16:16 -0600 (CST) Received: from [192.168.0.6] (adsl-71-145-191-220.dsl.austtx.sbcglobal.net [71.145.191.220]) (authenticated bits=0) by sol.csr.utexas.edu (8.12.11.20060308/8.12.11) with ESMTP id l1KGG5nO029313 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Tue, 20 Feb 2007 10:16:06 -0600 Mime-Version: 1.0 Message-Id: In-Reply-To: References: Date: Tue, 20 Feb 2007 10:16:04 -0600 To: ids.analysis.forum@cls.fr From: "John C. Ries" Subject: Re: [ids.analysis.forum] DORIS ground marks survey tie Content-Type: text/plain; charset=iso-8859-1 X-Mailcontrol-Inbound: c!PzNVdyE6pAgYrdZN4HGLIOLgW8bYa616COtuSiUsY= X-Spam-Score: -0.7 X-Scanned-By: MailControl A-06-00-00 (www.mailcontrol.com) on 10.69.0.115 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hermes.cls.fr id PAA29513 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? If it has no geodetic benefit, it seems reasonable to leave off. Best regards, JR Cliquez sur l'url suivante https://www.mailcontrol.com/sr/c9j+KSm+Gi5oMqJzm84NUv+TOZouFYoA6TH1O4pY25YD8aYMrbYGJM7rPGvqfFzfb5itCLYGRYLXJKSgnKkwlzRVSL!q9+XDbS4DWb602xoV33eOKXy!BxhqwEKvZylJ0bvpiXpU0KJIOcwaIs!ZRCx0j!ZkmPFihakQ2LBp00YVtweSD8D31Y3qdJNtkDpYoFjN9XZTJDjBO6A99jEC8lSW8Cx2VgcC si ce message est indésirable (pourriel).