Vol. 20, issue 02, article # 13

Khlusov V.A., Surkov A.S. Peculiarities in remote sensing of spatially distributed non-stationary objects using complex signals. // Atmospheric and oceanic optics. 2007. V. 20. No. 02. P. 166-170.
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Abstract:

We consider peculiar features of using compound signals in remote sensing of spatially distributed non-stationary objects (SDNO) like, for instance, meteorological objects or vortex inhomogeneities in the atmosphere. We also analyze the influence of the shape of the ambiguity function (AF) of a vector sounding signal on the accuracy of the estimate of the matrix response function (MRF) of a SDNO, which is its compact description, allowing joint representation of range distribution, velocities, and polarization parameters of elementary reflectors, a set of which forms the SDNO. It is shown that for correct MRF estimation signals are needed, ambiguity function of which has a needle shape. The results of simulation of an algorithm for MRF estimation in cases of using three types of signals: phase-code-modulated signal, chirp signals with the bandwidth duration product N = 104, and a simple signal with a unity bandwidth duration product.

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