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PolyPen RP 400
植物葉片光譜儀
spectral reflectance on leaves
http://psi.cz/
 Photon Systems Instruments

用途:

  • PolyPen RP 400 利用氙氣燈(380-1050nm)為內部光源來測量葉片的反射光譜, 並以任何外部光源作 葉片的穿透與吸收測量.
  • 此外, PolyPen 加入常用的反射指數(e.g. NDVI, NDGI, PRI, Greeness Index, etc.)公式於軟體中.
  • 測量數據立即以圖型顯示或資料表於儀器螢幕上. 數據也存於記憶體中做後續 處理或傳至電腦.
  • PolyPen RP 400 是透過鋰充電電池運轉的獨立系統, 不需外部電腦.
  • 特色為創新的使用介面, 彩色觸控螢幕, 內建光源與葉片夾具.
  • 此夾具也提供參考標準板以供光源與感測器的校正.

Reference Standard:

  • 簡單快速校正內部光源與光譜感測器的方法.
  • 可更換的黑 白 背景轉換器位於葉片夾具底部
  • 選購 spectralon 參考標準板

特點

  • 測量葉片反射光譜的完整系統
  • 自動計算所有常用的反射指數
  • 客製指數計算為可能
  • 使用觸控螢幕可做可程式編輯
  • 內建光源
  • 葉片夾具做非破壞, 現場的測量
  • USB 連接埠
  • 不需電腦
  • 手持式, 輕型, 電池驅動並且價格實惠

Technical Specification:

  • Light Source:
    Xenon incandescent lamp 380-1050 nm
  • Spectral Response Range:
    380 nm - 790 nm
  • Spectral Response Half Width:
    8 nm
  • Spectral Straylight:
    -30 dB
  • Optical Aperture Diameter:
    5 mm
  • Scanning Speed:
    About 100 ms
  • Touch Screen:
    240 x 320 pixel; 65535 colors
  • Memory Capacity:
    32 Mbit (up to 4000 measurements)
  • System Data:
    16 bit AD conversion
  • Dynamic Range:
    High gain: 1:4300; Low gain: 1:13000
  • Communication:
    USB
  • Dimension:
    15 x 7.5 x 4 cm
  • Weight:
    300 g
  • Case:
    Splash-proof
  • Battery:
    Li-Ion; rechargeable via USB port of a PC
  • Battery Life:
    48 hours (continuous operation)
  • Operating Temperature:
    0 to +50 ºC
  • Storage Temperature:
    -20 to +70 ºC
  • Warranty:
    1 year parts and labor

List of Calculated Vegetation Indices

  • Complete system for measurement of spectral reflectance on leaves
  • Reflected light spectra captured and displayed
  • Based on reflected light, pre-programmed calculation of all commonly used reflectance indices is provided
  • Custom indices calculation possible
  • Programmable via intuitive touch-screen use
  • Integrated light source
  • Leaf clip sample holder for non-destructive measurements with two inter-changeable reference standards
  • USB connectivity
  • Integrated GPS module
  • No PC needed
  • Handheld, lightweight and battery-powered with affordable price
  • PolyPen RP 400
  • Photosynthesis research and education
  • Plant biology
  • Plant screening and field studies
  • Environmental monitoring & ecology
  • Agriculture & horticulture
  • PolyPen RP 400
  • Quick and simple method of calibrating the internal lamp and spectral detector
  • Exchangeable black-and-white background adapter conveniently located on the bottom part of the leaf clip
  • Additional Spectralon reference standard included in the device price
  • Spectralon standard is spectrally flat over UV-VIS-NIR spectrum and optically flat to +/- 1 % over the photopic region of the spectrum
  • Automatic calculation of all commonly used reflectance indices
  • Calculation of custom indices possible
  • Instant data graphs and data sheets
  • Export to a PC via USB communication
  • GPS mapping plug-in
  • Future firmware updates
  • Light Source:
    Xenon incandescent lamp 380-1050 nm
  • Spectral Response Range:
    380 nm - 790 nm
  • Spectral Response Half Width:
    8 nm
  • Spectral Straylight:
    -30 dB
  • Optical Aperture Diameter:
    5 mm
  • Scanning Speed:
    About 100 ms
  • Touch Screen:
    240 x 320 pixel; 65535 colors
  • Memory Capacity:
    32 Mbit (up to 4000 measurements)
  • System Data:
    16 bit AD conversion
  • Dynamic Range:
    High gain: 1:4300; Low gain: 1:13000
  • Communication:
    USB
  • Dimension:
    15 x 7.5 x 4 cm
  • Weight:
    300 g
  • Case:
    Splash-proof
  • Battery:
    Li-Ion; rechargeable via USB port of a PC
  • Battery Life:
    48 hours (continuous operation)
  • Operating Temperature:
    0 to +50 ºC
  • Storage Temperature:
    -20 to +70 ºC
  • Warranty:
    1 year parts and labor
  • Normalized Difference Vegetation Index (NDVI) 
    Reference: Rouse et al. (1974)
    Equation: NDVI = (RNIR - RRED ) / (RNIR + RRED )
  • Simple Ratio Index (SR)
    Reference: Jordan (1969); Rouse et al. (1974)
    Equation: SR = RNIR / RRED
  • Modified Chlorophyll Absorption in Reflectance Index (MCARI1)
    Reference: Haboudane et al. (2004) 
    Equation: MCARI1 = 1.2 * [2.5 * (R790- R670) - 1.3 * (R790- R550)]
  • Optimized Soil-Adjusted Vegetation Index (OSAVI)
    Reference: Rondeaux et al. (1996) )
    Equation: OSAVI = (1 + 0.16) * (R790- R670) / (R790- R670 + 0.16)
  • Greenness Index (G)
    Equation: G = R554 / R677
  • Modified Chlorophyll Absorption in Reflectance Index (MCARI)
    Reference: Daughtry et al. (2000)
    Equation: MCARI = [(R700- R670) - 0.2 * (R700- R550)] * (R700/ R670)
  • Transformed CAR Index (TCARI)
    Reference: Haboudane et al. (2002)
    Equation: TSARI = 3 * [(R700- R670) - 0.2 * (R700- R550) * (R700/ R670)]
  • Triangular Vegetation Index (TVI)
    Reference: Broge and Leblanc (2000)
    Equation: TVI = 0.5 * [120 * (R750- R550) - 200 * (R670- R550)]
  • Zarco-Tejada & Miller Index (ZMI)
    Reference: Zarco-Tejada et al. (2001)
    Equation: ZMI = R750 / R710
  • Simple Ratio Pigment Index (SRPI)
    Reference: Peñuelas et al. (1995)
    Equation: SRPI = R430 / R680
  • Normalized Phaeophytinization Index (NPQI)
    Reference: Barnes et al. (1992)
    Equation: NPQI = (R415- R435) / (R415+ R435)
  • Photochemical Reflectance Index (PRI)
    Reference: Gamon et al. (1992)
    Equation: PRI = (R531- R570) / (R531+ R570)
  • Normalized Pigment Chlorophyll Index (NPCI)
    Reference: Peñuelas et al. (1994)
    Equation: NPCI = (R680- R430) / (R680+ R430)
  • Carter Indices
    Reference: Carter (1994), Carter et al. (1996) 
    Equation: Ctr1 = R695 / R420; Ctr2 = R695 / R760
  • Lichtenthaler Indices
    Reference: Lichtenthaler et al. (1996) 
    Equation: Lic1 = (R790 - R680) / (R790 + R680); Lic2 = R440 / R690
  • Structure Intensive Pigment Index (SIPI)
    Reference: Peñuelas et al. (1995)
    Equation: SIPI = (R790- R450) / (R790+ R650)
  • Gitelson and Merzlyak Indices
    Reference: Gitelson & Merzlyak (1997)
    Equation: GM1 = R750/ R550; GM2 = R750/ R700)

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