PROJECT TITLE :

Practical implementation of stripmap Doppler imaging

ABSTRACT:

Doppler imaging is a technique that can generate fine 2-dimensional (2D) imagery in the absence of large bandwidths. Radar imaging has traditionally consisted of combining wide bandwidth waveforms with aperture synthesis. Wide bandwidth waveforms give high resolution in down-vary (line-of-sight), whereas aperture synthesis permits high resolution within the orthogonal direction. But, in today's increasingly congested spectral environment, using wide bandwidths waveforms is changing into less and less enticing. Consequently, imaging techniques that require only narrow bandwidth waveforms supply terribly engaging and sensible blessings. An approach, examined here, is to use section beside aperture synthesis to attain high resolution in down-range while using narrowband waveforms. This methodology has the added benefit of using the identical collection geometry as ancient stripmap artificial aperture radar imaging. So Doppler imaging is compatible with use in spectrally congested environments where wide bandwidth waveforms may be prohibited. During this study, the basic Doppler imaging concept is explained, a easy framework for its operation is introduced and resolution limits are examined. Results are presented from both simulations and full-scale experiments, which demonstrate vary resolutions as fine as 23 cm using an eight.9 GHz CW waveform and a couple of m long artificial aperture.