KHz SLR Station Graz Graz kHz LIDAR Georg Kirchner, Franz Koidl, Daniel Kucharski Institute for Space Research SLR Station Graz / Austria Poznan, Oct

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  • kHz SLR Station GrazGrazkHz LIDARGeorg Kirchner, Franz Koidl, Daniel KucharskiInstitute for Space ResearchSLR Station Graz / AustriaPoznan, Oct. 2008

  • General Idea: How it works .... Herstmonceux published this idea in Canberra 2006; for 10 Hz SLR Graz now implemented a kHz LIDAR into the Graz kHz SLR station: Laser Pulses are transmitted with 2 kHz; Along each path, photons are backscattered (by clouds, layers ....) Photons are detected with a SPCM (Single Photon Counting Module) Epochs of these photons are filled into 100-ns-slots (15 m distance) For each shot, up to 4096 slots are filled with photon events (> 60 km) Up to 65000 shots can be accumulated / averaged for each slot Number of events in each slot, Epoch Time, Az/El of mount are stored

    Kuratoriums - Sitzung Graz, 2003-11-25

  • Graz kHz SLR LIDAR Each Counter: 16 Bit, up to 65 k events Integration time selectable for each cycle PC stores all counter values, Time, Az, El ...

    Kuratoriums - Sitzung Graz, 2003-11-25

  • No Clouds: No reflections ..If there are NO clouds or other reflecting things along the laser beam path:=> No reflections detected ....

    Kuratoriums - Sitzung Graz, 2003-11-25

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    1

    Photon Events in each Slot

    Distance [m]

    # of Events in Slot

    kHz LIDAR: 400 Shots; no clouds ...

    With Cloud

    150.95181916169.518191615677

    300.38038290323.80382903183

    450.34886152693.488615269255

    600.8773177418.77317741028

    750.45938967424.59389674244

    900.9471793169.47179316029

    1050.93144647729.31446477179

    1200.44962021384.49620213774

    1350.74780962157.47809621557

    1500.44736141764.47361417644

    1650.95634212759.56342127529

    1800.2445519822.44551981992

    1950.06323523320.632352331744

    2100.97371468379.73714683669

    2250.70336649917.0336649917

    2400.67543957236.75439572296

    2550.22100235342.21002353382

    2700.78210056777.8210056777

    2850.55641694065.56416940595

    3000.39469963243.94699632413

    3150.1112089781.11208977971

    3300.00151714510.01517145090

    3450.2018929022.01892901962

    3600.95214240579.52142405659

    3750.40828233534.08282335344

    3900.37544007283.754400728415

    4050.34896284633.48962846263

    4200.68385476396.83854763866

    4350.08792103940.87921039380

    4500.95874927149.58749271369

    4650.32651944023.26519440213

    4800.26872163652.68721636542

    4950.96579344219.65793442089

    5100.62129665686.2129665686

    5250.08669279810.86692798050

    5400.98563031939.8563031939

    5550.76924695087.69246950757

    5700.89507768258.95077682518

    5850.10453963451.04539634531

    6000.87698739568.76987395658

    6150.41886423594.18864235864

    6300.79973602867.99736028647

    6450.91748176459.17481764499

    6600.82941718318.29417183058

    6750.8166803888.16680387968

    6900.36173560263.61735602633

    7050.11762044691.17620446861

    7200.32337911553.233791155118

    7350.70930781517.0930781517

    7500.16673434281.66734342821

    7650.40453674854.04536748534

    7800.34743846963.47438469583

    7950.17036311081.70363110831

    8100.70868129897.08681298867

    8250.73347900977.3347900977

    8400.90719093299.0719093299

    8550.71303287497.13032874857

    8700.44216492274.4216492274

    8850.75595467247.55954672437

    9000.15146569881.51465698781

    9150.54749415935.47494159325

    9300.61860667626.18606676226

    9450.79812720497.98127204947

    9600.0143149170.14314917040

    9750.78238499017.82384990117

    9900.56150810085.6150810085

    10050.68021079136.802107912733

    10200.10523051461.05230514591

    10350.62395824296.2395824296

    10500.69701788326.97017883236

    10650.00310413310.03104133070

    10800.71487544827.14875448247

    10950.93488479269.34884792639

    11100.31674203833.16742038263

    11250.52561912385.25619123825

    11400.42473417094.24734170874

    11550.16568714051.65687140531

    11700.37918280833.79182808283

    11850.19174909441.91749094371

    12000.2016068042.016068042

    12150.83453724478.34537244668

    12300.5162023435.16202342965

    12450.10327918491.03279184941

    12600.0266665260.26666526030

    12750.34332708883.43327088843

    12900.51533774575.15337745665

    13050.5852055815.85205580975

    13200.25683472952.56834729522

    13350.17035388531.70353885321

    13500.99989400549.99894005389

    13650.43771393624.37713936164

    13800.98851709479.88517094699

    13950.0998653080.99865308020

    1410