FrancescoMontorsi ScientificResearch Files

 UWB DATABASE FOR LOS/NLOS ALGORITHM TESTING
 by Francesco Montorsi <francesco.montorsi@unimore.it>, Oct 20th, 2010 
 University of Modena and Reggio Emilia
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 LEGAL NOTES:
    Copyright (c) 2010, Francesco Montorsi
    All rights reserved.

    Redistribution and use in source and binary forms, with or without 
    modification, are permitted provided that the following conditions are 
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        * Redistributions of source code must retain the above copyright 
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright 
          notice, this list of conditions and the following disclaimer in 
          the documentation and/or other materials provided with the distribution
          
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
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    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
    POSSIBILITY OF SUCH DAMAGE.
    
 If you use the data of this database, please cite (one of) the following papers:
   Montorsi, F.; Pancaldi, F.; Vitetta, G.; "Statistical Characterization and Mitigation of NLOS Bias in UWB Localization Systems," Advances in Electronics and Telecommunications, pp. 11-17, Issue no 4, ISSN 2081-8580
   Montorsi, F.; Pancaldi, F.; Vitetta, G.; "Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems," Ultra-Wideband (ICUWB), 2011 IEEE International Conference on, pp. 86-90, 14-16 Sept. 2011

 For more info, feel free to contact me at francesco.montorsi@gmail.com
 For latest version refer to http://frm.users.sourceforge.net/publications.html

 
 
 TECHNICAL DETAILS:

 The database is saved in MATLAB's MAT binary format as 'database.mat'.
 The database was created from measurements done with two TimeDomain UWB PulsOn 220.
 The UWB PulsOn220 [1] device has the following features:
  • Center Frequency (radiated): appr. 4.7 GHz
  • Bandwidth (10 dB radiated): 3.2 GHz
  • Pulse Repetition Frequency: 9.6 MHz
  • EIRP: -12.8 dBm
  • Power Consumption: 5.7 Watts
  • Dimensions: 16.5 cm x 10.2 cm x 5.1 cm (housing w/o antenna)
  
 [1] PulsOn220 website: http://www.timedomain.com/datasheets/P220aSK.php.

 To load the database and plot some relevant data you can use the plot_database_data.m script.
 The MAT file contains the following structures:
 
 - torre_maina_LOS
 - torre_maina_NLOS
 - villa_rangoni_ground_floor_mixed_LOS_NLOS
 - villa_rangoni_first_floor_LOS
 - villa_rangoni_first_floor_NLOS

 and the vector:

 - uwb_pulse_template
 
 The structures contain the following fields:

 -> tx_pos: the position of the UWB transmitter node respect the coordinate system in [x y] form 

 -> available_node_indexes: the integer indexes of the measurement positions which can be used
                            to index the rx_pos, rx_range, rx_waveform, rx_waveform_adjusted_time
                            cell arrays

 -> rx_pos: cell array of the UWB receiver node positions in [x y] form

 -> rx_range: cell array containing the range measurements saved by the TimeDomain device using
              its internal TOA estimation algorithm (in meters)

 -> rx_waveform: cell array containing matrices organized with the waveforms saved by the TimeDomain 
                 receiver device on different rows; the number of rows varies between 1 and 25
                 and each row is a different realization of the link.
                 Each row contains 10ns of the waveform received _before_ an energy threshold is crossed
                 and 100ns after the threshold is crossed (They are always long 110ns.)
                 This means that the various waveforms for different links do NOT share a common time frame. 

 -> rx_waveform_adjusted_time: cell array containing the same waveforms of 'rx_waveform' with
                               the time origin adjusted (introducing zeroes) to respect the measured range rx_range.

 -> sampling_period: sampling period for the UWB samples of rx_waveform in seconds

 -> date_acquisition: date at which the acquisitions were taken

 -> place_acquisition: place where the acquisitions were taken

 -> env_acquisition_drawing_file: drawing containing the propagation environment for the current
                                  structure, which also shows the coordinate system.

 -> wall_thickness: thickness of the main wall introducing NLOS biases (in case there was a wall obstructing
                    the propagation of the direct path).