IDRA Raw Data Delft University of Technology (DUT) Raw IDRA data, complex I/Q signals J. Figueras i Ventura, Design of a High Resolution X-band Doppler Polarimetric Radar, PhD Thesis, TU Delft, 2009. @ http://repository.tudelft.nl/view/ir/uuid%3Ad90b9ad6-237b-435d-9dc5-5660d9e7fbdd/ CF-1.4 CESAR observatory, the Netherlands Ground-based polarimetric weather radar. http://ftp.tudelft.nl/TUDelft/irctr-rse/idra/ IDRA Raw Data This file contains the raw data streams of the FW-CW X-band (central frequency 9.475 GHz) polarimetric weather radar IDRA located on the top of the 213m agl. meteorological observation tower at Cabauw, The Netherlands. The datastreams comprises the complex I/Q signals of the beat signal for the two co-polarised (linear horizontal and linear vertical polarisation) and one cross-polarised receiver channel. The file contains as well the corresponding processed weather radar observables. onGoing dataset http://data.3tu.nl/repository/collection:cabauw website 5f3bcaa2-a456-4a66-a67b-1eec928cae6d climatologyMeteorologyAtmosphere Radar, Precipitation 4.707 5.145 51.835 52.105 2008-06-26,onGoing 2009-10-19 publication This file contains the raw data streams (complex I/Q signals of the beat signal) of IDRA. 28992 EPSG CESAR data policy (www.cesar-database.nl) scientific Delft University of Technology (DUT) t.otto@tudelft.nl Principle Investigator Delft University of Technology (DUT) Principle Investigator t.otto@tudelft.nl http://rse.ewi.tudelft.nl/ 2010-05-27 creation eng ISO-19115 Nederlands profiel op ISO 19115 voor geografie, v1.2 1 scalar 2012-10-20T10:00:00Z 2012-10-20T10:01:00Z IDRA_dataset_description_document.pdf 1.0 netCDF,3.6.2 Otto T., DUT 2010-05-27 1 scalar CESAR observatory 51.97 4.926 -0.7 06348 Zijdeweg 1 3411 MH Lopik Utrecht the Netherlands 1 scalar time hours since 2012-10-20 00:00:00 T sample Samples of the beat signal collected at a sampling frequency of 2.5 MHz S time hours since 2012-10-20 00:00:00 T range non-fixed m Slant range (meter) to the leading edge of the range bins. The radial extension of the range bins is provided by the variable <range_resolution>. beat signal, I_hh counts Real part of the beat signal at co-polarised horizontal polarisation in analog-to-digital converter counts. beat signal, Q_hh counts Imaginary part of the beat signal at co-polarised horizontal polarisation in analog-to-digital converter counts. beat signal, I_vv counts Real part of the beat signal at co-polarised vertical polarisation in analog-to-digital converter counts. beat signal, Q_vv counts Imaginary part of the beat signal at co-polarised vertical polarisation in analog-to-digital converter counts. beat signal, I_vh counts Real part of the beat signal at cross-polarisation in analog-to-digital converter counts. beat signal, Q_vh counts Imaginary part of the beat signal at cross-polarisation in analog-to-digital converter counts. noise power, horizontal polarised receiver channel W Noise power (Watt) in the horizontal polarised receiver channel measured with the transmitter switched off. Measured at 2012-10-20T00:00:00Z. noise power, vertical polarised receiver channel W Noise power (Watt) in the vertical polarised receiver channel measured with the transmitter switched off. Measured at 2012-10-20T00:00:00Z. co-polarised equivalent reflectivity factor at horizontal polarisation dBZ Co-polarised equivalent reflectivity factor at horizontal polarisation in logarithmic units (dBZ, normalised to 1 mm6 m-3). -999.0 differential reflectivity dB Logarithmic ratio of the co-polarised equivalent reflectivity factor at horizontal polarisation and the co-polarised equivalent reflectivity factor at vertical polarisation. -999.0 linear depolarisation ratio dB Logarithmic ratio of the cross-polarised and the co-polarised channel for transmitted horizontal polarisation. -999.0 radial Doppler velocitiy for transmitted horizontal polarisation ms-1 Radial Doppler velocity estimated from the Doppler phase shift on a sweep to sweep basis. -999.0 spectrum width ms-1 Spectrum width for horizontal polarisation transmitted. -999.0 Differential phase between the co-polarised echoes at horizontal and vertical polarisation. rad Spectral estimation of the differential phase between the co-polarised echoes at horizontal and vertical polarisation. -999.0 azimuth, raw data rad The azimuth for the raw data (radian) is measured clockwise from the Geographic North Pole. azimuth, processed data rad The azimuth for the processed data (radian) is measured clockwise from the Geographic North Pole. range resolution m Radial extension (meter) of one range bin. central radiation wavelength m Central radiation wavelength (meter). frequency excursion s-1 Frequency excursion of the transmitted linear up-chirp. sweep time us Sweep time (microseconds) of the transmitted linear up-chirp. transmitted power W sample size Number of sweeps that are averaged for the calculation of one profile of the processed data and of the noise measurements. antenna beam-width rad Half-power beam-width of the transmit and receive antennas (radian). The beam-width determines the resolution in azimuth and elevation. elevation rad The elevation (radian) is measured from the horizon (0 rad) upwards.