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June Wang

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Everything posted by June Wang

  1. User Bobo Xi August 30, 2017 9:06 AM Dear Prof. I'm a postgraduate in xidian university,china. I'm research in the hyperspectral imge of mars at present and have downloaded the CRISM data on the PDS Geosciences Node. The datatype of the data is MTRDR and ID is “frt0000474a_07_if164j_mtr3”. Then,I have two problems with it : 1.First, I have read the "CRISM Data Product Specification", it said that the TER datas is "A spatially reconciled, full spectral range I/F targeted observation central scan image cube in the IR (L-detector) sensor space that has been corrected for geometric, photometric, atmospheric, and instrumental effects." and "MTRDRs are map-projected versions of TER data products." Then,I want to confim that does that mean that the MTRDR datas have calibrated for geometric, photometric, atmospheric, instrumental effects and map-projected ? 2. Second,the attachment of this email is the Browse Image of the MTRDR data I have dowmloaded . My question is that what is the meaning of the curve below ?In addition, I have open the MTRDR data by envi5.1 and why the spectral curve almost stay the same for each pixel in the image ? I'm feeling very confused and looking forward to your reply! Best regards! User Seelos, Frank P. August 30, 2017 1:38 PM > I want to confim that does that mean that the MTRDR datas have calibrated for geometric, photometric, atmospheric, instrumental effects and map-projected? This is correct. The only structural difference between the sensor space TER spectral image cube (the IF product) and the corresponding map-projected MTR spectral image cube is that radiometrically questionable bands have been removed from the MTR. The TER image cube has 545 bands and the MTR has 489. > Browse Image of the MTRDR ... My question is that what is the meaning of the curve below The plot shows the scene median and [5, 95] percentile envelope spectra. > the spectral curve almost stay the same for each pixel in the image The spectral variability in this scene is subdued by a relatively dusty atmosphere. The TER/MTRDR processing accounts for atmospheric gas absorptions and the relative geometric/photometric effects of aerosol scattering, but the data are top-of-atmosphere corrected I/F, not model ground reflectance. User Bobo Xi August 30, 2017 11:14 PM Hello, Thanks for your reply. but exuse me, I'm still not clearly understand my last question. In other words,if I want to make mineral classification in the image by using the material's spectral variability, does that mean that I have to use the TRDR datas and calibrate them myself by using some ground reflectance model rather than directly using the MTRDRs? User Seelos, Frank P 2017-09-01 03:40:48 If you’re interested in quantitative mineral abundance modeling then the retrieval of surface spectral reflectance through some type of surface/atmosphere separation or atmospheric correction will be required – either the TRDRs or the TERs/MTRDRs could be the starting point in this case. However, mineral identification, classification, and investigation of scene spectral variability are definitely possible with corrected I/F data – the majority of the CRISM-derived results in the literature used this type of workflow. Thanks, -Frank User Bobo Xi September 03, 2017 9:13 PM Sorry, I have been busy with something else and forgotten to write back. After seeing your reply I have totally understood, thank you very much!
  2. August 8, 2018 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through July 7, 2018 (Orbit 55,999) See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  3. July 28th, 2018 - More MEX HRSC RDR Version 3 Data Loaded into ODE HRSC new radiometrically calibrated (RDR version 3) image data have been loaded into ODE, with coverage through January 9th, 2017 (Orbit 10-16498). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  4. July 27th, 2018 Release 9 of MRO CRISM MTRDR (Map-projected Targeted Reduced Data Record), TER (Targeted Empirical Record), and TRDR (Targeted Reduced Data Record) browse and extras data has been loaded into ODE. This release fills in data from 2006_315 through 2007_116. See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html for more information.
  5. July 15, 2018 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through June 6, 2018 (Orbit 55,599) See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  6. June Wang

    ODE - LRO Release 34 Loaded into ODE

    July 9th, 2018 Updated Diviner RDR query tool database from July 5th, 2009 to March 15th, 2018.
  7. June 22nd, 2018 - LRO Release 34 has been loaded into ODE. Updated LOLA EDR products from June 18th, 2009 to May 7th, 2018 Updated LOLA RDR products from July 13th, 2009 to May 7th, 2018 Updated LAMP EDR and RDR products from July 6th, 2009 to March 15th, 2018 Updated LEND EDR_SCI, EDR_HK, RDR_RSCI, and RDR_CHK products from June 18th, 2009 to March 14th, 2018 Updated LEND RDR_DLD and RDR_DLX products from June 27th, 2009 to December 14th, 2017 Updated Diviner EDR and RDR products from July 5th, 2009 to March 15th, 2018 Updated Mini-RF Bistatic data products (EDR, RDR, and DDR) from April 6th, 2011 to September 28th, 2017. Updated LROC EDR, CDR and RDR products from June 30th, 2009 to March 16th, 2018 In Progress LOLA RDR query tool database from July 13th, 2009 to May 7th, 2018 In Progress Diviner RDR query tool database from July 5th, 2009 to March 15th, 2018. Please see ODE Lunar Holdings - https://wufs.wustl.edu/ode/odeholdings/Moon_holdings.html
  8. July 9th, 2018 - More MEX HRSC RDR Version 3 Data Loaded into ODE HRSC new radiometrically calibrated (RDR version 3) image data have been loaded into ODE, with coverage through December 31st, 2016 (Orbit 10-16468). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  9. July 4th, 2018 - Mars Odyssey Release 64 Data Updates Loaded NS and HEND raw and derived data into ODE through January 26th, 2018 Updated THEMIS standard data products (IREDR, IRRDR, IRBTR, VISEDR, VISRDR and VISABR data) from February 19th, 2002 to December 7th, 2017 Updated THEMIS geometry data products (IRGEO2, IRPBT2, VGEO2, and VISALB data) from September 28th, 2013 to December 7th, 2017 See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html.
  10. June Wang

    ODE - LRO Release 34 Loaded into ODE

    June 25th, 2018 Updated LOLA RDR query tool database from July 13th, 2009 to May 7th, 2018
  11. June 25th, 2018 - MEX HRSC new Version 3 map projected data (REFDR3) data have been loaded into ODE - HRSC new Version 3 of map projected RDR data (REFDR3) have been loaded into ODE, with coverage through December 31, 2016 (Orbit 10-16468). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html for a full list of data holdings in ODE.
  12. June 14th, 2018 - MEX HRSC new Version 3 map projected data (REFDR3) data have been loaded into ODE - HRSC new Version 3 of map projected RDR data (REFDR3) have been loaded into ODE, with coverage through October 14, 2016 (Orbit 10-16200). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html for a full list of data holdings in ODE.
  13. ODE MRO Release 45 CRISM gravity data SHARAD MCS CTX HiRISE June 4th, 2018 - MRO Release 45 Loaded into ODE. - Updated MRO CRISM EDR and CDR products from September 27th, 2006 to February 9th, 2018 - Updated MRO CRISM DDR products from September 27th, 2006 to February 8th, 2018 - Updated MRO CRISM TRDR products from September 27th, 2006 to February 8th, 2018 - Updated MRO raw gravity data products released through May 9th, 2018 - Updated MRO SHARAD EDR products from December 6th, 2006 to November 11th, 2017(orbits through 52941) - Updated SHARAD Radargram data products released through November 15th, 2017 (orbits through 52995) - Updated MRO MCS EDR, RDR and DDR products from September 15th, 2006 to January 31st, 2018 - Updated MRO CTX EDR products from August 30th, 2006 to December 1st, 2017 - Updated MRO HiRISE EDR, RDR, anaglyph and DTM products released through May 6th, 2018 (Orbit 55199) Please see ODE Mars Holdings – https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  14. June 1st, 2018 - MEX HRSC new map projected data (REFDR3) data have been loaded into ODE - HRSC new Version 3 of map projected RDR data (REFDR3) have been loaded into ODE, with coverage through August 17, 2016 (Orbit 10-16000). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html for a full list of data holdings in ODE.
  15. May 7, 2018 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, and DTM data products released through April 5, 2018 (Orbit 54,799) See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  16. June Wang

    Georeferencing PDS images in ENVI

    Great! Glad to hear the GLT procedure works for you.
  17. June Wang

    ODE - Mars Odyssey Release 63 Data Loaded into ODE

    April 14th, 2018 --Loaded NS and HEND raw and derived data into ODE through October 17th, 2017 See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html.
  18. April 11th, 2018 - Mars Odyssey Release 63 THEMIS Data Updates Updated THEMIS standard data products (IREDR, IRRDR, IRBTR, VISEDR, VISRDR and VISABR data) from February 19th, 2002 to September 8th, 2017 Updated THEMIS geometry data products (IRGEO2, IRPBT2, VGEO2, and VISALB data) from September 28th, 2013 to September 8th, 2017 Release 63 of GRS data is delayed. The data would be available by April 15, 2018. See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html.
  19. April 11th, 2018 - New MEX OMEGA and MARSIS data loaded into ODE - New OMEGA EDR data for the extended mission 5 and extended mission 6 have been loaded into ODE, with coverage through June 3rd, 2017 (Orbit 16996). - New MARSIS EDR and Subsurface RDR data for the extended mission 6 have been loaded into ODE, with coverage through June 20th, 2017 (Orbit 17053). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  20. April 9, 2018 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through March 5, 2018 (Orbit 54,399) See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  21. June Wang

    ODE - LRO Release 33 Loaded into ODE

    April 2nd, 2018 Updated Diviner RDR query tool database from July 5th, 2009 to December 15th, 2017.
  22. March 21st, 2018 - LRO Release 33 has been loaded into ODE. Updated LOLA EDR products from June 18th, 2009 to January 3rd, 2018 Updated LOLA RDR products from July 13th, 2009 to January 3rd, 2018 Updated LAMP EDR and RDR products from July 6th, 2009 to December 15th, 2017 Updated LEND EDR_SCI, EDR_HK, RDR_RSCI, and RDR_CHK products from June 18th, 2009 to December 14th, 2017 Updated LEND RDR_DLD and RDR_DLX products from June 27th, 2009 to September 4th, 2017 Updated Diviner EDR and RDR products from July 5th, 2009 to December 15th, 2017 Updated Mini-RF Bistatic data products (EDR, RDR, and DDR) from April 6th, 2011 to June 28th, 2017. Updated LROC EDR, CDR and RDR products from June 30th, 2009 to December 15th, 2017 Updated LOLA RDR query tool database from July 13th, 2009 to January 3rd, 2018 In Progress Diviner RDR query tool database from July 5th, 2009 to December 15th, 2017. Please see ODE Lunar Holdings - https://wufs.wustl.edu/ode/odeholdings/Moon_holdings.html
  23. June Wang

    Georeferencing PDS images in ENVI

    Hi Subhabose, The ‘ellipse.txt’ file looks fine to me. In datum.txt, you had an extra ‘,’ in the last line. The correct string would be below. ‘D_Moon_2000, GCS_Moon_2000, 0,0,0’ In file ‘map_proj.txt’, I saw your definition for the Moon North Polar Stereographic projection. Since the maximum and minimum latitude for your data are 59.676 and -1.151 degrees, I would not suggest using the North Polar Stereographic projection.
  24. March 27th, 2018 - More MEX HRSC RDR Version 3 Data Loaded into ODE HRSC new radiometrically calibrated (RDR version 3) image data have been loaded into ODE, with coverage through October 14th, 2016 (Orbit 10-16200). See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html
  25. June Wang

    Georeferencing PDS images in ENVI

    Hi Subhabose, The product ID you gave was not a complete product ID. This value can be found in the product label file. From your ID I cannot tell what type of product you used. Is it the L0 raw data, or the L1B calibrated image, which has 3 versions, either Version1, V2 or V3? Or the L2 reflectance image? Please take a look of below help page. At the bottom of the right panel, you will see some additional M3 resource, including M3 ENVI User's Guide,working with M3 Data, Working with M3 L1B Data, M3 Data Tutorial and a few others. http://ode.rsl.wustl.edu/moon/pagehelp/quickstartguide/index.html?isros_chandrayaans_m3.htm Assuming you use the Version3 L1B calibrated image, e.g., ' M3G20081229T022350_V03_RDN', you can access the location and geometry information in the *.LOC and *.OBS files and relate it to the spectra of the *.RDN files using ENVI as documented in the file 'M3 ENVI User's Guide'. And you can use GLT in ENVI to do the georeference. As for your question about map projection, from your screen copies, I can only tell the Datum you used are not correct. Because WGS-84 is used for Earth. If you can send me the strings that you have updated in three files datum.txt, ellipse.txt, map_proj.txt, I can dig more into your issues. Thanks, June
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