Radar Imaging and Holography

Chapter 5: Radar Systems for Rotating Target Imaging (A Holographic Approach)

Overview

The possibility of using the rotation of an object to resolve its scattering centres was, probably, first shown by W. M. Brown and R. J. Fredericks [21]. Independently, microwave video imaging of rotating objects was demonstrated theoretically and experimentally by other researchers [109].

An analysis of three approaches (in terms of the antenna, range-Doppler and cross-correlation theories) was made in [104] and [146] for the imaging of rotating targets. Here we discuss this problem in terms of a holographic approach.

[21]Brown, W. M., and Fredericks, R. J.: Range-Doppler imaging with motion through resolution cells , IEEE Transactions on Aerospace and Electronic Systems, 1969, AES-5 (1), pp. 98 102

[109]Popov, S. A., Rozanov, B. A., Zinoviev, J. S., and Pasmurov, A. Ya.: Basic principles of microwave holograms inverse synthesis . Proceedings of the eighthIIIAll-UnionSchoolonHolography, Leningrad, USSR, 1976, pp. 275 89 (in Russian)

[104]Pasmurov, A. Ya.: Aircraft radar imaging , Zarubezhnaya Radioelectronica, 1987, 12, pp. 3 30 (in Russian)

[146]Zinoviev, J.S., and Pasmurov, A.Ya.: Methods of inverse aperture synthesis for radar with narrow-band signals , Zarubezhnaya Radioelectronica, 1985, 3, pp. 27 39 (in Russian)

5.1 Inverse synthesis of 1D microwave Fourier holograms

We shall start with the basic principles of inverse synthesis of microwave holograms of an object rotating around the centre of mass. The analysis will be based on the holographic approach discussed in Sections 1.2 and 2.4.

Lens-free optical Fourier holography [131] implies that an optical hologram is recorded when the amplitude...

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