X-Sympa-To: ids.analysis.forum Received: from hector.cls.fr (osis.cls.fr [62.161.32.21]) by hermes.cls.fr (8.9.3/8.9.3) with ESMTP id WAA13995 for ; Mon, 25 Oct 2004 22:31:33 +0200 From: dchinn@bowie.gsfc.nasa.gov Received: by hector.cls.fr (Postfix) id 09DDE65F53; Mon, 25 Oct 2004 20:31:33 +0000 (GMT) Delivered-To: ids.analysis.forum@cls.fr Received: from bowie.gsfc.nasa.gov (orange-102.cls.fr [62.161.32.13]) by hector.cls.fr (Postfix) with ESMTP id DE895527EC for ; Mon, 25 Oct 2004 20:31:31 +0000 (GMT) Received: from bowie.gsfc.nasa.gov (localhost [127.0.0.1]) by bowie.gsfc.nasa.gov (Postfix) with ESMTP id F072228CD; Mon, 25 Oct 2004 16:31:28 -0400 (EDT) Received: (from dchinn@localhost) by bowie.gsfc.nasa.gov (8.12.10+Sun/8.12.9/Submit) id i9PKVSKj027121; Mon, 25 Oct 2004 16:31:28 -0400 (EDT) Message-Id: <200410252031.i9PKVSKj027121@bowie.gsfc.nasa.gov> Subject: Re: [ids.analysis.forum] TOPEX/DORIS POD - large residuals To: ries@csr.utexas.edu (John C. Ries) Date: Mon, 25 Oct 2004 16:31:27 -0400 (EDT) Cc: ids.analysis.forum@cls.fr, nzelensk@bowie.gsfc.nasa.gov In-Reply-To: from "John C. Ries" at Oct 23, 2004 11:06:48 PM X-Mailer: ELM [version 2.5 PL2] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Validation-by: feissel@ensg.ign.fr > >We have also observed important residuals during sept. 23-25 2004, on > >the standard MOE (cf. mail from Christian Jayles) and POE. > > Dear Group, We too have been noticing something strange with the data on Sept 23-25. Last week I sent e-mail to JPL to see if the spa_satatt file needed to amended for cycle 443 to account for this anomaly. I am still waiting for an answer. I also requested that JPL send me the external attitude data for cycle 443, which they did. Using the this data did not significantly improve the orbit. So it appears that there must be some off-nominal maneuver/thrust/attitude change that happened on these days. Doug