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  • What is a synthetic aperture radar?

    A synthetic aperture radar (SAR) is a high-resolution imaging radar which can be used to obtain high-resolution radar images similar to optical photography under extreme low visibility weather conditions. It is suitable for all-day and all-weather detection regardless of light and climatic restrictions, and can even be used to obtain information hidden by the Earth’s surface or vegetation. Accordingly, it has extensive prospects in civil applications such as agriculture, forestry, water, geology and natural disasters.
  • What are the applications of SAR in deformation monitoring? What are the main monitoring indicators? What do the core indicators mean?

    SAR is capable of extracting micro deformation and displacement information in large-scale observations. It is mainly applied in the real-time monitoring of surface displacement. Due to its all-day, all-weather and large-scale applications, and high precision, real-time automatic monitoring, it is extensively used for deformation monitoring in geological disasters, open-pit mines, water conservancy dams and road slopes.
    The main monitoring indicators are surface coordinates and the corresponding deformation value. The deformation value here refers to deformation (unit: mm) in the direction of the radar line of sight. Indicators involved in monitoring applications such as deformation rate, deformation acceleration and tangent angle can be calculated with the deformation value.
  • Which data format does the equipment provide? Which coordinate system is it suitable for?

    RacoSensor's deformation monitoring radar provides deformation data in .DAT format, including 2D coordinates and deformation value. It adopts a 2D coordinate system with the radar as the origin.
    The data collected by RacoSensor's deformation monitoring radar can be automatically transmitted into its intelligent monitoring and warning platform. In addition, the deformation data in the 2D radar coordinate system can be converted into data (.JSON format) in the WGS84 coordinate system, including longitude, latitude, deformation value, deformation acceleration and deformation rate.
  • What is a phased array (electronic scanning) radar?

    A phased array radar (PAR), also known as a phase-controlled electronic scanning array radar, is a radar composed of a large number of identical radiating elements. Each element is independently controlled by a wave controller in terms of phase and amplitude, thereby obtaining accurate and predictable receiving patterns and beam directions. The capabilities of PAR in converting beams quickly and accurately enable it to scan the entire airspace within 1 minute. PAR is a kind of advanced radar developed in the military field in recent years. Generally, electronic scanning is directly adopted in PAR instead of mechanical structures such as turntables or slide rails. In addition, PAR features higher speed, stability and reliability, and lighter weight. As such, it represents the development trend of slope radar.
RacoSensor has successively developed multiple series of radar products and their application systems for slope deformation monitoring and airport runway foreign object debris (FOD) detection.




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