In this chapter, the authors will consider what determines the amplitude of the ground return. The authors will then examine the doppler spectrum of each of the three categories of ground return, and the relationship of the composite spectrum to the doppler frequencies of target aircraft in representative situations. Finally, the authors will consider the problem of exceptionally strong sidelobe return reflected by certain objects on the ground.

Chapter Contents:

• What Determines the Amplitude of the Ground Return
• Mainlobe Return
• Sidelobe Clutter
• Altitude Return
• Relation of Clutter Spectrum to Target Frequencies
• Return from Objects on the Terrain

Inspec keywords: aircraft antennas; Doppler radar; radar clutter

Other keywords: strong sidelobe return; ground return amplitude; ground return spectra; target aircraft; Doppler spectrum; composite spectrum; ground return sources; representative situations; Doppler frequency

Subjects: Single antennas; Radar equipment, systems and applications