Abstract
Abstract : This report extends the study of radar measurements in 11 from a point scatterer to a distributed scatterer. The measurement is based on partial derivatives of the echo-signal phase. The study is aimed at developing an understanding of what kind of radar information can be measured from echo-signal and formulating glint errors caused by a distributed scatterer. The importance of the phase has been shown in signal and image processing. Basic radar measurements can also be obtained from the echo-signal phase 11,2,31. Unlike measuring of target information from a point scatterer, for a distributed scatterer we must take account of the measurement errors caused by the dimension and the orientation of a distributed scatterer. These are called glint errors. In this report, we describe how to measure radar information from the partial derivatives of the echo-signal phase with respect to frequency, time, and spatial position. We derive the expressions of range, range-rate, angle, and angle-rate glint errors for a distributed scatterer, and give an insight into these glint errors. Radar measurements, Distributed scatterer, Phase information, Glint error.
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