This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Tyn- > Institution: ITC > Package Version: 2.2b2 build date:2007-03-12 07:04 UTC > Operating System: Windows 2003 > Hardware Information: Java: home: C:\\Program Files\\Java\\jre1.6.0 version: > 1.6.0-rc j3d:1.3.2 fcs (build12) > Inquiry: Hi Jeff/Don/Tom, > > Another issue: I have some NOAA/AVHHR data over Mashonaland-West, Zimbabwe > and noticed that McIDAS can serve the orbital information as TEXT. Correct? What McIDAS command do you use to the the navigation as TEXT? We have not implemented the ADDE NAV stuff yet in Java. i would like to be able to calculate several triangulations between satellite-sun-terrain (i.e. SZA, SAA, VZA, and VAA) for each swath/pixel to do atmospheric correction for CH 1-3. Now, i think i can organize some routines that can be implemented at client-side (read: java-jython-IDV). To start simple, can i access the orbital information or metadata (which may publish an average "viewing azimuth angle" for the whole swath) directly from the timeSequence in jython? Or do i need a TLE ADDE text server for that? Tom has an experimental ADDE server of NOAA data, > or otherwise i can send you a copy using the new "Make Data Source Local"... > see ftp://ftp.itc.nl/pub/venus/NOAA_AVHRR_Zimbabwe.zidv > > Btw, i have implemented this already for geo-stationairy satellites (MSG, > FY-2C, etc.) but this is relatively easy as the nadir position / heigth is > more or less constant... > > Cheers, Tyn > > see: ftp://ftp.itc.nl/pub/venus/NOAA_AVHRR_Zimbabwe.zidv (114 mb) these zidv files are getting pretty big! ;-) Don Ticket Details =================== Ticket ID: QNF-333667 Department: Support IDV Priority: Normal Status: Open