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- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 definition "[Source: SMAP home page Instrument Description, http://smap.jpl.nasa.gov/instrument/ ] The SMAP instrument architecture incorporates an L-band radar and an L-band radiometer that share a single feedhorn and parabolic mesh reflector. The reflector is offset from nadir and rotates about the nadir axis at 14.6 rpm, providing a conically scanning antenna beam with a surface incidence angle of approximately 40°. The reflector has a diameter of 6 m, providing a radiometer footprint of 40 km. The real-aperture radar footprint is 30 km, defined by the two-way antenna beamwidth. To obtain the desired high spatial resolution the radar employs range and Doppler discrimination. The radar data can be processed to yield resolution enhancement to 1-3 km spatial resolution. The science goal is to combine the attributes of the radar and radiometer observations in terms of their spatial resolution and sensitivity to soil moisture, surface roughness, and vegetation. Soil moisture will be estimated optimally at a resolution of 10 km and freeze-thaw state at a resolution of 1-3 km. The provision of constant incidence angle across the 1000-km swath simplifies the data processing and enables accurate repeat-pass estimation of soil moisture and freeze/thaw change. Group: Instrument_Details Entry_ID: SMAP L-BAND RADIOMETER Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Spectrometers/Radiometers Instrument_Subtype: Imaging Spectrometers/Radiometers Short_Name: SMAP L-BAND RADIOMETER Long_Name: SMAP L-Band Radiometer End_Group Group: Instrument_Associated_Sensors Short_Name: SMAP L-BAND RADAR End_Group Group: Associated_Platforms Short_Name: SMAP End_Group Group: Spectral_Frequency_Information Spectral_Frequency_Coverage_Range: 1.41 GHz End_Group Online_Resource: http://smap.jpl.nasa.gov/instrument/ Online_Resource: http://nasascience.nasa.gov/missions/smap Online_Resource: http://eospso.gsfc.nasa.gov/eos_homepage/mission_profiles/show_mission.php?id=72 Creation_Date: 2009-09-23 Group: Instrument_Logistics Instrument_Owner: USA/NASA End_Group End_Group" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 id "1655859" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_id 2e38423f-a5e6-411a-88d3-8fdc00aaf30a @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_id 4f81c61c-f100-4bc4-9664-d9b70d2f162f @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_id 6015ef7b-f3bd-49e1-9193-cc23db566b69 @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_id 944b7691-af37-4fb4-9393-c114e7997829 @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_label "Earth Remote Sensing Instruments" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_label "Imaging Spectrometers/Radiometers" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_label "Instruments" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_label "Passive Remote Sensing" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 path_label "Spectrometers/Radiometers" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 prefLabel "SMAP L-BAND RADIOMETER" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 reference "" @default.
- fee5e9e1-10f1-4f14-94bc-c287f8e2c209 tag "Instruments" @default.