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Communication Dans Un Congrès Année : 2010

Characterization of Doppler Effects in the Context of Over-the-Horizon Radar

Résumé

This paper addresses the problem of the characterization of Doppler effect of maneuvering targets in the context of over-the-horizon radar. The received signal has a complex Doppler structure which is composed of several arrivals, each corresponding to a particular path. In essence, it consists of several close time-frequency components with non-linear signatures in the time-frequency domain. The nonlinearities are the projections of the target's motion vectors on the propagation paths. Estimating the time-frequency contents of all paths reveals the Doppler effects characterizing the target's trajectory. Analysis of such signals in the presence of strong clutter requires effective non-stationary signal processing techniques. In this paper, we propose a new technique based on local analysis of the phase information using warped high-order ambiguity function. The results depict resolvable multipath estimates which are very close to the ground truth.
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Dates et versions

hal-00537388 , version 1 (18-11-2010)

Identifiants

  • HAL Id : hal-00537388 , version 1

Citer

Cornel Ioana, Moeness Null Amin, Fauzia Ahmad, Yimin Zhang. Characterization of Doppler Effects in the Context of Over-the-Horizon Radar. Radar 2010 - IEEE International Radar Conference, May 2010, Arlington, Virginie, United States. paper ID 9170. ⟨hal-00537388⟩
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