Range Observation Method Applied to Linear Frequency-Modulated Continuous-Wave Synthetic-Aperture Radars

Abstract

The sliding signal processing method interpreted as the range observation technique for syntheticaperture radar systems is discussed. The given method enables us to shift the observed ranges, thereby eliminating the maximum range restriction inherent to the standard de-ramping processing method. The operational capability of the method is demonstrated using radar images obtained from the single received implementation but exhibiting different detection ranges. It is revealed that the method under consideration is efficient upon reduction of nonlinear distortions caused by the nonideal operation of a voltage-controlled oscillator.