Bistatic synthetic aperture radar inversion with application in dynamic object imaging

An inversion method is presented for bistatic synthetic aperture radar imaging. The method is based on a Fourier analysis (Doppler processing) of the bistatic synthesized array's data followed by a phase modulation analysis of the Doppler data. The approach incorporates the phase information of the wavefront curvature in the transmitted waves as well as the resultant echoed signals. The Doppler data are shown to provide samples of the reflectivity function's spatial Fourier transform within a band that depends upon the bistatic angles and ranges. Associated resolution, reconstruction, and sampling constraints for the imaging problem are discussed. The bistatic SAR inversion is also utilized to formulate an inversion for multistatic measurements made along a physical linear array due to a single transmission to image a dynamic object. >

[1]  D. Munson,et al.  A tomographic formulation of spotlight-mode synthetic aperture radar , 1983, Proceedings of the IEEE.

[2]  Mehrdad Soumekh,et al.  Band-limited interpolation from unevenly spaced sampled data , 1988, IEEE Trans. Acoust. Speech Signal Process..

[3]  P. Morse,et al.  Methods of theoretical physics , 1955 .

[4]  Jack Walker,et al.  Range-Doppler Imaging of Rotating Objects , 1980, IEEE Transactions on Aerospace and Electronic Systems.

[5]  W. Brown,et al.  Range-Doppler Imaging with Motion through Resolution Cells , 1969, IEEE Transactions on Aerospace and Electronic Systems.

[6]  L. Felsen,et al.  Radiation and scattering of waves , 1972 .

[7]  E. N. Leith,et al.  On the application of coherent optical processing techniques to synthetic-aperture radar , 1966 .

[8]  M. Skolnik,et al.  Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

[9]  Mehrdad Soumekh,et al.  A system model and inversion for synthetic aperture radar imaging , 1990, International Conference on Acoustics, Speech, and Signal Processing.

[10]  R. Lewis.  Physical optics inverse diffraction , 1969 .

[11]  D. Munson,et al.  A tomographic formulation of bistatic synthetic aperture radar , 1989 .

[12]  Dale A. Ausherman,et al.  Developments in Radar Imaging , 1984, IEEE Transactions on Aerospace and Electronic Systems.

[13]  A. Macovski.  Ultrasonic imaging using arrays , 1979, Proceedings of the IEEE.

[14]  Mehrdad Soumekh,et al.  Echo imaging using physical and synthesized arrays , 1990 .