CONAE orbit tested, verified, and implemented Roll, pitch, and yaw implemented Antenna pattern for Aquarius scale model implemented Rudimentary Thermal Model and Thermistors implemented Land Emissivity Model in progress There now exists fully functional (but not complete) and tested code for: Radiometer Level-1a to Level 1b Radiometer Level-1b to Level 2 Simplicity and readability is a major objective in writing source code 1. Well structured (no spaghetti code) 2. Thoroughly commented 3. Minimize lines of code 4. Have code directly relate to mathematics 5. Geolocation is all done in vector notation 6. Avoid too much modularization Initial Closure Test have been completed We are now running a complete end-to-end Aquarius on-orbit simulator Earth Scenes TB TA Counts L1A L1B L2B Earth Scenes Progress since last Algorithm Workshop
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CONAE orbit tested, verified, and implemented Roll, pitch, and yaw implemented
Progress since last Algorithm Workshop. CONAE orbit tested, verified, and implemented Roll, pitch, and yaw implemented Antenna pattern for Aquarius scale model implemented Rudimentary Thermal Model and Thermistors implemented Land Emissivity Model in progress - PowerPoint PPT Presentation
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CONAE orbit tested, verified, and implementedRoll, pitch, and yaw implemented
Antenna pattern for Aquarius scale model implemented
Rudimentary Thermal Model and Thermistors implemented
Land Emissivity Model in progress
There now exists fully functional (but not complete) and tested code for:Radiometer Level-1a to Level 1b Radiometer Level-1b to Level 2
Simplicity and readability is a major objective in writing source code1. Well structured (no spaghetti code)2. Thoroughly commented3. Minimize lines of code4. Have code directly relate to mathematics5. Geolocation is all done in vector notation6. Avoid too much modularization
Initial Closure Test have been completedWe are now running a complete end-to-end Aquarius on-orbit simulatorEarth Scenes TB TA Counts L1A L1B L2B Earth ScenesSimulator outputs radiometer and thermistor counts in telemetry block format
Progress since last Algorithm Workshop
Implement Ruf RFI flagging
Implement other QC flags
Further test. review, and finalize radiometer sensor model
Adapt geolocation to handle of orbit-maneuvers
Implement galactic radiation into simulation and L2b algorithm
Implement solar backscatter into L2b algorithm
For the next year, there will be continual updates and improvements
Things to Do(A partial list)
CONAE Orbit
• The simulator now uses the CONAE orbit
• Histogram shows some differences between JPL and CONAE mostly at the perigee. RMS difference in altitude within an orbit is 108m.
• Simulated Nadir Latitude, Longitude, and Altitude agree with CONAE to better than 250 meters
• Roll, Pitch, and Yaw are now simulated assuming geodetic mission
Scale Model Gain Pattern
• Includes– surface temperature and moisture from NCEP (simultaneous)– Surface type (bare, ice, grass, crop, tree (tropical, deciduous, conifer)) from
EUROCLIMAP monthly/annual climatology– Soil roughness effect– Vegetation effect– L-band dielectric model of Dobson et al. 1985
Land Emissivity Model
LNA Det
Amp V/F V out
+
T r Rec Noise
Temp
Z Zero
Offset
T o Ref Load
Temp
G = Gain Dicke Switch
+
L T 6 To
Computer
BPF
B = Bandwidth
Noise T
N
T i
+
Noise T
CND
+
L 6 T 6 L 5 T 5 L 4 T 4 L 3 T 3 L 2 T 2 L 1 T 1 Loss, Temp