CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Validation of a Passive Bistatic Radar using Digital Satellite TV as a Source of Opportunity.

Estudiants que han llegit aquest projecte:

Director/a: BERENGUER I SAU, JORDI

Departament: TSC

Títol: Validation of a Passive Bistatic Radar using Digital Satellite TV as a Source of Opportunity.

Data inici oferta: 30-06-2017     Data finalització oferta: 28-02-2018


Estudis d'assignació del projecte:
    Tipus: Individual
     
    Lloc de realització: Fora UPC    
     
            Supervisor/a extern: Serni Ribó
            Institució/Empresa: Inst. de Ciències de l'Espai (ICE-CSIC)
            Titulació del Director/a: M.S. degree in telecommunications engine
     
    Paraules clau:
    Remote sensing, Passive Bistatic Radar, digital satellite television, Signals of Opportunity, Doppler measurements.
     
    Descripció del contingut i pla d'activitats:
    “Digital Satellite TV signals are
    illuminating the earth from multiple
    geostationary satellites" These
    signals can be used in a passive
    bistatic radar configuration for
    remote sensing of the sea-surface, as
    recently demonstrated by the Earth
    Observation research group at the
    Institute of Space Sciences. Detection
    of rain may also be possible.

    The tasks to be carried out are the
    following:

    • Planning and preparation of
    the set-up of the experiment to detect
    digital satellite TV signals reflected
    in rain clusters. For this task, the
    instruments existing and developed by
    the Earth Observation (ICE) research
    group will be used. The assembly of
    the receiving antennas will be made on
    the roof of the building of the
    Institute of Space Sciences. Signals
    will be acquired when there is a rain
    event and some tests of the
    configuration can be made with other
    targets such as cars, buildings,
    airplanes, etc.

    • Preparation of simulation
    software (MATLAB and/or C++) to
    process and analyse the received
    signals and to determine the potential
    of digital satellite TV signals in
    bistatic radar configuration for
    remote sensing of rain.

    • If rain events have occurred,
    the received signals will be processed
    and will be analysed if the rainfall
    has been detected.
     
    Overview (resum en anglès):
    The project is based on the proposal of a Passive Bistatic Radar that uses digital satellite television signals, transmitted from geostationary orbits, as sources of opportunity to detect distances and Doppler for different targets. Initially, the main objective of the project was the detection of rain, but due to the few precipitation events with strong intensity near the radar ground station, other detection experiments have been carried out. The setup of the ground station antennas, as well as the entire receiver instrument system, was mounted on the Institute of Space Sciences roof, from where there was access to multiple targets such as buildings, cars, trees, etc.

    The potential of digital satellite television signals and the configuration of passive bistatic radar has been studied, emphasizing in our radar system. The existing receiver instrument, called BIBA-SPIR (Bi-Band Software PARIS Interferometric Receiver), developed by the Earth Observation research group of the Institute of Space Sciences, has been used to record and sample direct and reflected signals of digital satellite television. Having a receiver antenna for each link, the UP antenna will receive the direct signal from the satellite and the DW antenna will receive the reflected signal.

    The central part of the project is based on the off-line software processing of signals received, using an open source library called \texttt{wavpy} in C++/Fortran90 and designed for the analysis and modeling of GNSS- R. Processing techniques such as DC calibration, filtering and cross correlations are applied to obtain result graphs such as clusters and Delay-Doppler maps. The main contribution during this project was based on creating the necessary code in order to create and define digital filters and to filter the received signals sampled by the BIBA-SPIR instrument. This code has been included in the aforementioned library. Also, a graphical user interface in Python has been created to provide the input and output parameters necessary for the correct operation of the main programs used to perform signal processing via software.

    The experimental results obtained support the validation of passive biestatic radar using digital satellite television signals to detect different targets and measure range and Doppler frequency.

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