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- 842c4fea-afe2-4ed1-aade-ccce65cfb121 definition "The Poseidon-3 radar altimeter is the main instrument on the Jason-2 mission. Derived from the Poseidon-1 altimeter on Topex/Poseidon and the Poseidon-2 on Jason-1, it measures sea level, wave heights and wind speed. The Poseidon-3 altimeter emits pulses at two frequencies 13.6 and 5.3 GHz to measure the distance from the satellite to the surface (range). Free electrons in the atmosphere can delay the signal's return, affecting the measurement accuracy. The delay is directly related to the radar frequency, so the difference between the two measurements can be used to determine atmospheric electron content. Poseidon-3 is coupled with Doris/Diode, to improve measurements over coastal areas, inland waters and ice. Additional information on the Poseidon-3 instrument is available on the AVISO site. http://www.aviso.oceanobs.com/en/missions/current-missions/jason-2/instruments/poseidon-3/index.html [Description Source: NASA JPL Ocean Surface Topography from Space Home Page] Group: Instrument_Details Entry_ID: POSEIDON-3 Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Altimeters Instrument_Subtype: Radar Altimeters Short_Name: POSEIDON-3 Long_Name: JASON-2 RADAR ALTIMETER End_Group Group: Associated_Platforms Short_Name: OSTM/JASON-2 End_Group Group: Spectral_Frequency_Information Spectral_Frequency_Resolution: 13.6 GHz in the Ku-band, 5.3 GHz in the C-band End_Group Online_Resource: http://sealevel.jpl.nasa.gov/mission/ostm-sc-inst.html Online_Resource: http://www.aviso.oceanobs.com/en/missions/current-missions/jason-2/instruments/poseidon-3/index.html Sample_Image: http://sealevel.jpl.nasa.gov/gallery/spacecraft/images/ostm-altimeter-br.jpg Creation_Date: 2008-07-10 Group: Instrument_Logistics Instrument_Owner: France/CNES Instrument_Owner: USA/NASA End_Group End_Group" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 id "1655051" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_id 6015ef7b-f3bd-49e1-9193-cc23db566b69 @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_id 92ddaaca-40b2-4936-bc1a-28cc5743e8b8 @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_id abe7fa55-1198-44ea-8327-20d13155b46c @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_id c8fe757b-b530-4d67-a553-e4903f4430a5 @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_label "Active Remote Sensing" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_label "Altimeters" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_label "Earth Remote Sensing Instruments" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_label "Instruments" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 path_label "Radar Altimeters" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 prefLabel "POSEIDON-3" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 reference "" @default.
- 842c4fea-afe2-4ed1-aade-ccce65cfb121 tag "Instruments" @default.
!["The Poseidon-3 radar altimeter is the main instrument on the Jason-2 mission. Derived from the Poseidon-1 altimeter on Topex/Poseidon and the Poseidon-2 on Jason-1, it measures sea level, wave heights and wind speed. The Poseidon-3 altimeter emits pulses at two frequencies 13.6 and 5.3 GHz to measure the distance from the satellite to the surface (range). Free electrons in the atmosphere can delay the signal's return, affecting the measurement accuracy. The delay is directly related to the radar frequency, so the difference between the two measurements can be used to determine atmospheric electron content. Poseidon-3 is coupled with Doris/Diode, to improve measurements over coastal areas, inland waters and ice. Additional information on the Poseidon-3 instrument is available on the AVISO site. http://www.aviso.oceanobs.com/en/missions/current-missions/jason-2/instruments/poseidon-3/index.html [Description Source: NASA JPL Ocean Surface Topography from Space Home Page] Group: Instrument_Details Entry_ID: POSEIDON-3 Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Altimeters Instrument_Subtype: Radar Altimeters Short_Name: POSEIDON-3 Long_Name: JASON-2 RADAR ALTIMETER End_Group Group: Associated_Platforms Short_Name: OSTM/JASON-2 End_Group Group: Spectral_Frequency_Information Spectral_Frequency_Resolution: 13.6 GHz in the Ku-band, 5.3 GHz in the C-band End_Group Online_Resource: http://sealevel.jpl.nasa.gov/mission/ostm-sc-inst.html Online_Resource: http://www.aviso.oceanobs.com/en/missions/current-missions/jason-2/instruments/poseidon-3/index.html Sample_Image: http://sealevel.jpl.nasa.gov/gallery/spacecraft/images/ostm-altimeter-br.jpg Creation_Date: 2008-07-10 Group: Instrument_Logistics Instrument_Owner: France/CNES Instrument_Owner: USA/NASA End_Group End_Group"](?object=%22The%20Poseidon-3%20radar%20altimeter%20is%20the%20main%20instrument%20on%20the%20Jason-2%20mission.%20Derived%20from%20the%20Poseidon-1%20altimeter%20on%20Topex%2FPoseidon%20and%20the%20Poseidon-2%20on%20Jason-1%2C%20it%20measures%20sea%20level%2C%20wave%20heights%20and%20wind%20speed.%0A%0AThe%20Poseidon-3%20altimeter%20emits%20pulses%20at%20two%20frequencies%2013.6%20and%205.3%20GHz%20to%20measure%20the%20distance%20from%20the%20satellite%20to%20the%20surface%20(range).%20Free%20electrons%20in%20the%20atmosphere%20can%20delay%20the%20signal's%20return%2C%20affecting%20the%20measurement%20accuracy.%20The%20delay%20is%20directly%20related%20to%20the%20radar%20frequency%2C%20so%20the%20difference%20between%20the%20two%20measurements%20can%20be%20used%20to%20determine%20atmospheric%20electron%20content.%20Poseidon-3%20is%20coupled%20with%20Doris%2FDiode%2C%20to%20improve%20measurements%20over%20coastal%20areas%2C%20inland%20waters%20and%20ice.%0A%0AAdditional%20information%20on%20the%20Poseidon-3%20instrument%20is%20available%20on%20the%20AVISO%20site.%0Ahttp%3A%2F%2Fwww.aviso.oceanobs.com%2Fen%2Fmissions%2Fcurrent-missions%2Fjason-2%2Finstruments%2Fposeidon-3%2Findex.html%0A%0A%5BDescription%20Source%3A%20%20NASA%20JPL%20Ocean%20Surface%20Topography%20from%20Space%20Home%20Page%5D%0A%0A%0AGroup%3A%20Instrument_Details%0A%20%20%20Entry_ID%3A%20POSEIDON-3%0A%20%20%20Group%3A%20Instrument_Identification%0A%20%20%20%20%20%20Instrument_Category%3A%20Earth%20Remote%20Sensing%20Instruments%0A%20%20%20%20%20%20Instrument_Class%3A%20Active%20Remote%20Sensing%0A%20%20%20%20%20%20Instrument_Type%3A%20Altimeters%0A%20%20%20%20%20%20Instrument_Subtype%3A%20Radar%20Altimeters%0A%20%20%20%20%20%20Short_Name%3A%20POSEIDON-3%0A%20%20%20%20%20%20Long_Name%3A%20JASON-2%20RADAR%20ALTIMETER%0A%20%20%20End_Group%0A%20%20%20Group%3A%20Associated_Platforms%0A%20%20%20%20%20%20Short_Name%3A%20OSTM%2FJASON-2%0A%20%20%20End_Group%0A%20%20%20Group%3A%20Spectral_Frequency_Information%0A%20%20%20%20%20%20Spectral_Frequency_Resolution%3A%2013.6%20GHz%20in%20the%20Ku-band%2C%205.3%20GHz%20in%20the%20C-band%0A%20%20%20End_Group%0A%20%20%20Online_Resource%3A%20http%3A%2F%2Fsealevel.jpl.nasa.gov%2Fmission%2Fostm-sc-inst.html%0A%20%20%20Online_Resource%3A%20http%3A%2F%2Fwww.aviso.oceanobs.com%2Fen%2Fmissions%2Fcurrent-missions%2Fjason-2%2Finstruments%2Fposeidon-3%2Findex.html%0A%20%20%20Sample_Image%3A%20http%3A%2F%2Fsealevel.jpl.nasa.gov%2Fgallery%2Fspacecraft%2Fimages%2Fostm-altimeter-br.jpg%0A%20%20%20Creation_Date%3A%202008-07-10%0A%20%20%20Group%3A%20Instrument_Logistics%0A%20%20%20%20%20%20Instrument_Owner%3A%20France%2FCNES%0A%20%20%20%20%20%20Instrument_Owner%3A%20USA%2FNASA%0A%20%20%20End_Group%0AEnd_Group%22){kind=link}