Principles of Synthetic Array (Aperture) Radar

Principles of Synthetic Array (Aperture) Radar

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In this chapter, the authors examine the SAR principles more closely and become acquainted with the basic digital processing techniques. The authors see (1) how the equivalent of a long array antenna may be synthesized from returns gathered over a period of several seconds by a comparatively small real antenna, (2) how the array may be focused, (3) what determines the angular resolution of such an array, and (4) how the computing load can be reduced by processing the returns with doppler filtering techniques.

Chapter Contents:

  • Basic SAR Concept
  • Focused Array
  • Reducing the Computing Load: Doppler Processing

Inspec keywords: filtering theory; Doppler radar; radar signal processing; antenna arrays; synthetic aperture radar; radar antennas

Other keywords: angular resolution; digital processing techniques; synthetic aperture radar; long array antenna; Doppler filtering

Subjects: Radar equipment, systems and applications; Antenna arrays; Filtering methods in signal processing

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