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Radiometry Updates: Testing Sensor Alignment and Water Splash on HyperPro

This report summarizes testing activities including sensor alignment and water splash tests on different equipment. Results suggest slight improvements with sensor positioning. Recommendations for calibration issues on SAS and Pro are discussed. Extra figures illustrating the WISP setup are included.

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Radiometry Updates: Testing Sensor Alignment and Water Splash on HyperPro

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  1. Radiometry Updates 7/29

  2. Test 1: All Sensor Test • ‘Same’ dock location for WISP, SAS base, and buoyed HyperPro • SAS Ed sensor located on upper dock Test 2: Ed Sensor Test • Same dock location for all sensors Test 3: Water Splash Test on HyperPro • Ran HyperPro for 1-2 minutes normal • Ran HyperPro for 1-2 minutes after splashing water on the upwelling radiance sensor Dock Test 7/27

  3. WISP Test 1: Every 30 seconds for 5-6 minutes Good Agreement with Time (Some boat wakes and waves) ‘Kick’ in 750-800 Smaller

  4. Test 2: Ed Test 1: All Sensors • Good Agreement of Ed values with Time • Used Median Values To Compare with SAS/Pro

  5. Test 1: SAS Ed Sensor On Upper Dock Difference Can Be +10%

  6. Test 2: SAS Ed Sensor On Lower Dock Difference ½ As Big

  7. Test 3: Ed Pre-Splash Test (Some Waves)

  8. Test 1: Variability in Lw and Rrs

  9. Test 3: Variability in Lw and Rrs Slightly Better with Ed Sensor Closer

  10. Test 1: Variability in Lt and Lsky

  11. Test 3: HyperPro Splash Test

  12. Let’s Make It More Complicated-Immersion

  13. Let’s Make It More Complicated-ρsky=0.09

  14. Recommendations? • Keeping in mind that the SAS and/or Pro may have calibration issues, using WISP in open water doesn’t look promising ‘as is’* • Gimbal the WISP • Put a level bubble on the under side of the WISP • Add automatic sampler feature (every x seconds)

  15. EXTRA FIGURES:WISP

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