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  • Radar is used to detect 'hard targets' such as aircraft, ships, surface vehicles and space objects. 

  • It is often able to determine target speed and direction, and sometimes size or composition.

  • Radar is also used to detect diffuse phenomena in the atmosphere and space such as wind, rain, ice or plasmas.

  • Ground penetrating radar (GPR) is able to detect objects, discontinuities or water/ice below ground.

  • Many parameters affect radar performance, such as;

    • target radar cross section (RCS) 
    • propagation losses due to distance, ground reflection, terrain/vegetation obstruction 
    • transmitting and receiving antenna gains, directivity
    • transmitter power
    • receiver sensitivity
    • background noise
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